Prepared By
Md. Arifuzzaman Arif,
MSc in Disaster Management,
Department of Geography and Environment,
University of Dhaka.
BSc in Forestry & Wood Technology Discipline,
Khulna University.
Lightning is an electrical discharge caused by imbalances between Storm clouds and the ground or within the clouds themselves. (Definition, Types, Causes, Distribution, Prediction)
https://www.cda.org.bd
The document discusses the process of lightning initiation and discharge. It explains that lightning occurs when positively and negatively charged regions in clouds or between clouds and the ground equalize. The document outlines the step-by-step process where water droplets accumulate in clouds, separating charges and creating an electric field. This electric field produces plasma that provides a path for the lightning bolt to discharge. Different types of lightning are also described such as intra-cloud, cloud-to-ground, and cloud-to-cloud lightning.
Thunder and Lightning CAI,PPT-Alphonsa Joseph, Social ScienceAchu Jose
The document provides directions for a computer-assisted lesson on thunder and lightning. It outlines the following:
- The lesson will cover the topic of thunder and lightning through relevant slides and pictures.
- Learners can navigate slides using their mouse and click on textboxes for responses.
- The direction provided by the computer should be followed.
- Brain teasers and relaxers are included to develop concepts and allow for self-checking with explanations.
- At the end, a "Test Your Knowledge" session allows learners to recap the lesson.
Floods are a common natural disaster in India that occur annually, causing widespread damage to lives and property. Some key points about floods and their management in India include:
- The major flood-prone states are Uttar Pradesh, Bihar, Assam, and West Bengal.
- Floods are caused by heavy rainfall, river overflow, coastal flooding, and sometimes dam/reservoir failures. They impact lives, infrastructure, agriculture, and the economy.
- Flood management involves forecasting, structural measures like dams and levees, and non-structural plans to minimize damage and warn communities. Zoning also directs development away from high risk flood areas.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over low pressure systems and can exist on scales from mesocyclones to extra tropical cyclones. Cyclones develop in tropical regions like northern Australia and Southeast Asia between the months of summer, requiring sea surface temperatures of at least 26°C. Cyclones are responsible for loss of life and property damage within 100km of their centers, mainly through strong winds, heavy rainfall, storm surges and tornadoes.
Lightning is a natural electrical discharge between clouds, the air or the ground. It occurs in three phases: 1) a negative charge descends from the cloud, 2) the positive charge from the ground meets it, and 3) a strong electric spark generates and travels toward the cloud. Lightning can travel at speeds of 60,000 m/sec and contain 30-50 lakhs volts of electricity. It strikes tall objects like trees and buildings due to their proximity to storm clouds. Lightning strikes can damage structures, injure or kill people and animals, and cause fires. Safety measures during storms include sheltering inside, staying away from water and each other, and not using electronic devices.
This document discusses drought, including its causes, types, regions affected, and methods of protection and relief. A drought is defined as an extended period of deficient water supply, either from surface or underground sources. It can last months or years and is caused by consistently low precipitation. Droughts can have significant environmental, economic, social and health impacts. Types of drought include meteorological, hydrological and agricultural droughts. Regions commonly affected include parts of India and Brazil. Protection and relief efforts include dams, cloud seeding, desalination, land use practices, water restrictions, rainwater harvesting and water recycling.
Bangladesh is prone to cyclones due to its geographic location in the Bay of Bengal. Cyclones develop over the warm waters of the Bay, gaining energy, before tracking westward towards Bangladesh. The country's low-lying delta lands provide no protection from high winds and storm surges. Some of the deadliest cyclones in history have impacted Bangladesh, such as the devastating 1970 Bhola cyclone that killed 300,000 people. Common impacts of major cyclones include heavy rainfall, flooding, and high winds that can lead to widespread damage. Climate change is also expected to increase the risks from cyclones and sea level rise in Bangladesh in the future.
Lightning is an electrical discharge caused by imbalances between Storm clouds and the ground or within the clouds themselves. (Definition, Types, Causes, Distribution, Prediction)
https://www.cda.org.bd
The document discusses the process of lightning initiation and discharge. It explains that lightning occurs when positively and negatively charged regions in clouds or between clouds and the ground equalize. The document outlines the step-by-step process where water droplets accumulate in clouds, separating charges and creating an electric field. This electric field produces plasma that provides a path for the lightning bolt to discharge. Different types of lightning are also described such as intra-cloud, cloud-to-ground, and cloud-to-cloud lightning.
Thunder and Lightning CAI,PPT-Alphonsa Joseph, Social ScienceAchu Jose
The document provides directions for a computer-assisted lesson on thunder and lightning. It outlines the following:
- The lesson will cover the topic of thunder and lightning through relevant slides and pictures.
- Learners can navigate slides using their mouse and click on textboxes for responses.
- The direction provided by the computer should be followed.
- Brain teasers and relaxers are included to develop concepts and allow for self-checking with explanations.
- At the end, a "Test Your Knowledge" session allows learners to recap the lesson.
Floods are a common natural disaster in India that occur annually, causing widespread damage to lives and property. Some key points about floods and their management in India include:
- The major flood-prone states are Uttar Pradesh, Bihar, Assam, and West Bengal.
- Floods are caused by heavy rainfall, river overflow, coastal flooding, and sometimes dam/reservoir failures. They impact lives, infrastructure, agriculture, and the economy.
- Flood management involves forecasting, structural measures like dams and levees, and non-structural plans to minimize damage and warn communities. Zoning also directs development away from high risk flood areas.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over low pressure systems and can exist on scales from mesocyclones to extra tropical cyclones. Cyclones develop in tropical regions like northern Australia and Southeast Asia between the months of summer, requiring sea surface temperatures of at least 26°C. Cyclones are responsible for loss of life and property damage within 100km of their centers, mainly through strong winds, heavy rainfall, storm surges and tornadoes.
Lightning is a natural electrical discharge between clouds, the air or the ground. It occurs in three phases: 1) a negative charge descends from the cloud, 2) the positive charge from the ground meets it, and 3) a strong electric spark generates and travels toward the cloud. Lightning can travel at speeds of 60,000 m/sec and contain 30-50 lakhs volts of electricity. It strikes tall objects like trees and buildings due to their proximity to storm clouds. Lightning strikes can damage structures, injure or kill people and animals, and cause fires. Safety measures during storms include sheltering inside, staying away from water and each other, and not using electronic devices.
This document discusses drought, including its causes, types, regions affected, and methods of protection and relief. A drought is defined as an extended period of deficient water supply, either from surface or underground sources. It can last months or years and is caused by consistently low precipitation. Droughts can have significant environmental, economic, social and health impacts. Types of drought include meteorological, hydrological and agricultural droughts. Regions commonly affected include parts of India and Brazil. Protection and relief efforts include dams, cloud seeding, desalination, land use practices, water restrictions, rainwater harvesting and water recycling.
Bangladesh is prone to cyclones due to its geographic location in the Bay of Bengal. Cyclones develop over the warm waters of the Bay, gaining energy, before tracking westward towards Bangladesh. The country's low-lying delta lands provide no protection from high winds and storm surges. Some of the deadliest cyclones in history have impacted Bangladesh, such as the devastating 1970 Bhola cyclone that killed 300,000 people. Common impacts of major cyclones include heavy rainfall, flooding, and high winds that can lead to widespread damage. Climate change is also expected to increase the risks from cyclones and sea level rise in Bangladesh in the future.
This document discusses types of drought and drought management in rangelands. It describes three types of drought: meteorological, agricultural, and hydrological. Meteorological drought is defined by a lack of precipitation. Agricultural drought impacts soil moisture and crops/animals. Hydrological drought decreases water levels in rivers, lakes, and groundwater. The document outlines causes of drought and its effects on rangelands, including lack of forage/water and increased wildfires. It recommends management strategies like providing supplemental feed, vaccinating animals grazing toxic plants, reducing herd size, and temporarily moving animals to less drought-stricken areas.
Irrigation system of Pakistan proved at top level of countries in the world but still it need deep concern regarding to control flood water. Due to heavy rainfall in September 2011, floods are come in left bank of drain and it has many impacts on the various cities and villages of sindh were observed, at least 360 people were killed, some 5.35 Million people and 1.2 Million homes affected as well 1.7 Million Acres of arable land inundated. Social life was fully disturbed as economy was destroyed due to damage of crop, people were also suffering from drinking water which was not purely provided and due to this dirty water many of the diseases were appeared like direa, malaria and tified. In this research we measure the losses during heavy rain fall 2011 in Nawabshah, Sh Benazeerabad regarding to impact on our social lives and then its precautions in future planning. Data was collected from social survey in premises of city, different departments including NGO’s and Governmental Departments and also solutions on immediate basis are discussed.
The document discusses flood management in India. It begins by outlining the rationale for effective flood management strategies given the impacts of flooding. It then covers various topics related to flood management including the types and causes of floods in India, flood risk management strategies, and the evolution of flood risk management approaches. Key flood-prone river basins in India are also identified.
The document summarizes information about droughts, including:
- Defining drought as prolonged dry weather that damages land.
- Droughts are caused by a lack of rainfall, especially in hot summer months.
- Drought mitigation includes irrigation and crop rotation to reduce impacts.
- Effects of drought include damaged farms and crops, reduced food production, and human deaths from things like heatstroke.
- Prevention methods incorporate conserving water, harvesting rainwater, protecting forests and groundwater, and limiting water usage.
Thunderstorms require moisture, an air lifting mechanism, and instability to form. They have three stages: cumulus, mature, and dissipating. During the mature stage, rising warm air and falling cold air cause static electricity to build up, resulting in lightning. Lightning is a high-voltage electrical discharge between clouds, air, or clouds and the ground. It can heat the nearby air to 50,000 degrees Celsius and travel at 300,000 m/s. Indoors, one should avoid contact with electrical equipment or plumbing, while outdoors the safest shelters are enclosed buildings or hard-top vehicles.
Floods are a major problem in India, affecting over 40 million hectares of land annually. The majority of rainfall is concentrated over 4 months of monsoon season, causing flooding in major river basins such as the Ganges and Brahmaputra. States like Bihar, Uttar Pradesh, West Bengal, Assam and Orissa are most at risk. Proper drainage systems and preparedness measures such as emergency supplies kits can help mitigate flood damage.
Thunderstorms are formed by cumulonimbus clouds and are characterized by lightning and thunder. They develop when certain atmospheric conditions are met, such as unstable lapse rates and sufficient water vapor. Thunderstorms can be triggered by different mechanisms like surface heating, frontal lifting, orographic lifting, and convergence. There are different types of thunderstorms including single cell, multicell, and supercells. Thunderstorms pose various hazards to aviation like turbulence, icing, hail, wind shear, lightning, tornadoes, and microbursts. Pilots can detect and avoid thunderstorms using weather radar and visual sighting, and recommended distances of avoidance depend on aircraft altitude.
Drought is defined as a prolonged period of abnormally low rainfall that negatively impacts living conditions and agriculture. It is difficult to determine the exact onset and end of a drought. Drought can be caused by improper rainfall distribution over time and space, as well as an imbalance between precipitation and water usage. There are different types of drought including meteorological, hydrological, agricultural, and socio-economic droughts that have increasingly severe impacts on weather, water resources, crop yields, and the economy. While drought is a natural phenomenon, its effects are exacerbated in developing countries by issues like overpopulation, deforestation, and unsustainable water usage.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over warm ocean waters and rely on favorable wind patterns. The main effects of cyclones include heavy rain, strong winds, storm surges, and tornadoes. Their intensity and location determine the level of destruction. Tornadoes are violently rotating columns of air that extend from the ground to a thunderstorm cloud. They can reach over 300 mph but usually last only a few minutes on the ground. The 1999 Odisha cyclone was the strongest ever recorded in the North Indian Ocean, with winds of 160 mph at its peak. It caused over 10,000 deaths and catastrophic damage in India.
Lightning is a huge electric spark caused by the accumulation of charges in clouds. In ancient times, people did not understand lightning and thought it was the wrath of the gods. In 1752, Benjamin Franklin showed that lightning and small sparks are the same phenomenon, but it took 2000 years for this realization. The process of transferring charge from a charged object to the earth is called earthing, which protects buildings from electrical shocks. Lightning occurs when negative and positive charges meet in clouds and streaks of bright light and sound are produced. During thunderstorms, it is important to find safe shelter inside a building or vehicle.
Lightning is an atmospheric discharge that typically occurs during thunderstorms. Benjamin Franklin famously conducted the kite experiment, which showed that lightning is a form of static electricity. A lightning strike generates a huge electric charge and can cause fires, destruction of property, burning of trees, and injury or death to people and animals. Lightning conductors are installed on tall buildings to protect them from lightning strikes. Safety measures during lightning include taking shelter indoors or in a car, avoiding trees and open areas, staying away from groups of people, and not using electrical devices.
Lightning is a large-scale electrical discharge that occurs during thunderstorms. It is caused by the buildup of positive and negative charges within a thunderstorm. When the buildup becomes large enough, a lightning bolt occurs as the charges suddenly equalize. There are several types of lightning including sheet lightning, cloud-to-ground lightning, and heat lightning. Thunder is the sound caused by the rapid heating and expansion of the air along the lightning channel.
Forest fires are the most common disaster in forests. During dry summer months with no rain, forests become littered with dry leaves and twigs that can easily catch fire from the smallest spark. Forest fires cause imbalances in nature by reducing plant and animal life, endangering biodiversity. Traditional fire prevention methods have not been effective, so it is essential to increase public awareness, especially among those living near forests, on the threats of forest fires.
The document discusses flood management in India. It outlines the significance of flood management, describing various types of floods and their causes. It notes that India is highly vulnerable to floods, which can have devastating effects. The document then covers India's flood management plan, including forecasting, mitigation efforts, and case studies. Structural measures like dams and non-structural measures like insurance and education are discussed.
Hudhud originated as a low pressure system in the Andaman Sea on October 6, 2014 that intensified into a tropical cyclone as it moved into the Bay of Bengal. It reached peak intensity as a Category 3 cyclone with maximum sustained winds of 185 km/h before making landfall near Visakhapatnam, India on October 12. The storm caused extensive damage through strong winds up to 260 km/h, heavy rains, and coastal flooding. It resulted in 81 deaths total and over $3 billion in economic losses, primarily through damage to infrastructure, homes, and forestry. Lessons from Hudhud emphasize the importance of accurate forecasting, preparedness through cyclone shelters and disaster management planning
Cyclones are rotating storms that form over warm tropical oceans and are characterized by high winds swirling about a central area of low pressure. They are known by different names in different regions. A tropical cyclone is defined as a circular storm with winds exceeding 64 knots. Cyclones can be predicted days in advance using meteorological records, and hazard maps can illustrate vulnerable areas. Risk reduction measures for cyclones include coastal belt plantation, land use control, engineered structures, flood management, and improving vegetation cover.
Cyclones are intense low pressure areas characterized by very strong circulating winds. They form over warm ocean waters and move with the prevailing winds. When a cyclone makes landfall, it can cause widespread damage from heavy winds, storm surges, and flooding. Proper preparedness and mitigation measures such as constructing cyclone resilient infrastructure, issuing early warnings, and evacuating people to shelters can help reduce loss of life and damage from cyclones.
A disaster is a sudden, calamitous event that seriously disrupts the functioning of a community or society and causes human, material, and economic or environmental losses that exceed the community’s or society’s ability to cope using its own resources. Most disasters are caused by natural termed as natural disasters but sometimes they have human origins and they are called as man-made disasters
1) Lightning occurs more frequently during the inter-monsoon periods of March-April and October-November due to high temperatures, low winds, and high water vapor forming thunderstorm clouds.
2) In cumulonimbus clouds, positively charged regions form in the upper parts of clouds while negatively charged regions form in the lower parts. When the charge difference becomes too great, lightning occurs as a discharge between the regions.
3) There are three main types of lightning: cloud-to-cloud, cloud-to-air, and cloud-to-ground, with the latter posing the greatest risk to humans and structures on the ground.
This document discusses types of drought and drought management in rangelands. It describes three types of drought: meteorological, agricultural, and hydrological. Meteorological drought is defined by a lack of precipitation. Agricultural drought impacts soil moisture and crops/animals. Hydrological drought decreases water levels in rivers, lakes, and groundwater. The document outlines causes of drought and its effects on rangelands, including lack of forage/water and increased wildfires. It recommends management strategies like providing supplemental feed, vaccinating animals grazing toxic plants, reducing herd size, and temporarily moving animals to less drought-stricken areas.
Irrigation system of Pakistan proved at top level of countries in the world but still it need deep concern regarding to control flood water. Due to heavy rainfall in September 2011, floods are come in left bank of drain and it has many impacts on the various cities and villages of sindh were observed, at least 360 people were killed, some 5.35 Million people and 1.2 Million homes affected as well 1.7 Million Acres of arable land inundated. Social life was fully disturbed as economy was destroyed due to damage of crop, people were also suffering from drinking water which was not purely provided and due to this dirty water many of the diseases were appeared like direa, malaria and tified. In this research we measure the losses during heavy rain fall 2011 in Nawabshah, Sh Benazeerabad regarding to impact on our social lives and then its precautions in future planning. Data was collected from social survey in premises of city, different departments including NGO’s and Governmental Departments and also solutions on immediate basis are discussed.
The document discusses flood management in India. It begins by outlining the rationale for effective flood management strategies given the impacts of flooding. It then covers various topics related to flood management including the types and causes of floods in India, flood risk management strategies, and the evolution of flood risk management approaches. Key flood-prone river basins in India are also identified.
The document summarizes information about droughts, including:
- Defining drought as prolonged dry weather that damages land.
- Droughts are caused by a lack of rainfall, especially in hot summer months.
- Drought mitigation includes irrigation and crop rotation to reduce impacts.
- Effects of drought include damaged farms and crops, reduced food production, and human deaths from things like heatstroke.
- Prevention methods incorporate conserving water, harvesting rainwater, protecting forests and groundwater, and limiting water usage.
Thunderstorms require moisture, an air lifting mechanism, and instability to form. They have three stages: cumulus, mature, and dissipating. During the mature stage, rising warm air and falling cold air cause static electricity to build up, resulting in lightning. Lightning is a high-voltage electrical discharge between clouds, air, or clouds and the ground. It can heat the nearby air to 50,000 degrees Celsius and travel at 300,000 m/s. Indoors, one should avoid contact with electrical equipment or plumbing, while outdoors the safest shelters are enclosed buildings or hard-top vehicles.
Floods are a major problem in India, affecting over 40 million hectares of land annually. The majority of rainfall is concentrated over 4 months of monsoon season, causing flooding in major river basins such as the Ganges and Brahmaputra. States like Bihar, Uttar Pradesh, West Bengal, Assam and Orissa are most at risk. Proper drainage systems and preparedness measures such as emergency supplies kits can help mitigate flood damage.
Thunderstorms are formed by cumulonimbus clouds and are characterized by lightning and thunder. They develop when certain atmospheric conditions are met, such as unstable lapse rates and sufficient water vapor. Thunderstorms can be triggered by different mechanisms like surface heating, frontal lifting, orographic lifting, and convergence. There are different types of thunderstorms including single cell, multicell, and supercells. Thunderstorms pose various hazards to aviation like turbulence, icing, hail, wind shear, lightning, tornadoes, and microbursts. Pilots can detect and avoid thunderstorms using weather radar and visual sighting, and recommended distances of avoidance depend on aircraft altitude.
Drought is defined as a prolonged period of abnormally low rainfall that negatively impacts living conditions and agriculture. It is difficult to determine the exact onset and end of a drought. Drought can be caused by improper rainfall distribution over time and space, as well as an imbalance between precipitation and water usage. There are different types of drought including meteorological, hydrological, agricultural, and socio-economic droughts that have increasingly severe impacts on weather, water resources, crop yields, and the economy. While drought is a natural phenomenon, its effects are exacerbated in developing countries by issues like overpopulation, deforestation, and unsustainable water usage.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over warm ocean waters and rely on favorable wind patterns. The main effects of cyclones include heavy rain, strong winds, storm surges, and tornadoes. Their intensity and location determine the level of destruction. Tornadoes are violently rotating columns of air that extend from the ground to a thunderstorm cloud. They can reach over 300 mph but usually last only a few minutes on the ground. The 1999 Odisha cyclone was the strongest ever recorded in the North Indian Ocean, with winds of 160 mph at its peak. It caused over 10,000 deaths and catastrophic damage in India.
Lightning is a huge electric spark caused by the accumulation of charges in clouds. In ancient times, people did not understand lightning and thought it was the wrath of the gods. In 1752, Benjamin Franklin showed that lightning and small sparks are the same phenomenon, but it took 2000 years for this realization. The process of transferring charge from a charged object to the earth is called earthing, which protects buildings from electrical shocks. Lightning occurs when negative and positive charges meet in clouds and streaks of bright light and sound are produced. During thunderstorms, it is important to find safe shelter inside a building or vehicle.
Lightning is an atmospheric discharge that typically occurs during thunderstorms. Benjamin Franklin famously conducted the kite experiment, which showed that lightning is a form of static electricity. A lightning strike generates a huge electric charge and can cause fires, destruction of property, burning of trees, and injury or death to people and animals. Lightning conductors are installed on tall buildings to protect them from lightning strikes. Safety measures during lightning include taking shelter indoors or in a car, avoiding trees and open areas, staying away from groups of people, and not using electrical devices.
Lightning is a large-scale electrical discharge that occurs during thunderstorms. It is caused by the buildup of positive and negative charges within a thunderstorm. When the buildup becomes large enough, a lightning bolt occurs as the charges suddenly equalize. There are several types of lightning including sheet lightning, cloud-to-ground lightning, and heat lightning. Thunder is the sound caused by the rapid heating and expansion of the air along the lightning channel.
Forest fires are the most common disaster in forests. During dry summer months with no rain, forests become littered with dry leaves and twigs that can easily catch fire from the smallest spark. Forest fires cause imbalances in nature by reducing plant and animal life, endangering biodiversity. Traditional fire prevention methods have not been effective, so it is essential to increase public awareness, especially among those living near forests, on the threats of forest fires.
The document discusses flood management in India. It outlines the significance of flood management, describing various types of floods and their causes. It notes that India is highly vulnerable to floods, which can have devastating effects. The document then covers India's flood management plan, including forecasting, mitigation efforts, and case studies. Structural measures like dams and non-structural measures like insurance and education are discussed.
Hudhud originated as a low pressure system in the Andaman Sea on October 6, 2014 that intensified into a tropical cyclone as it moved into the Bay of Bengal. It reached peak intensity as a Category 3 cyclone with maximum sustained winds of 185 km/h before making landfall near Visakhapatnam, India on October 12. The storm caused extensive damage through strong winds up to 260 km/h, heavy rains, and coastal flooding. It resulted in 81 deaths total and over $3 billion in economic losses, primarily through damage to infrastructure, homes, and forestry. Lessons from Hudhud emphasize the importance of accurate forecasting, preparedness through cyclone shelters and disaster management planning
Cyclones are rotating storms that form over warm tropical oceans and are characterized by high winds swirling about a central area of low pressure. They are known by different names in different regions. A tropical cyclone is defined as a circular storm with winds exceeding 64 knots. Cyclones can be predicted days in advance using meteorological records, and hazard maps can illustrate vulnerable areas. Risk reduction measures for cyclones include coastal belt plantation, land use control, engineered structures, flood management, and improving vegetation cover.
Cyclones are intense low pressure areas characterized by very strong circulating winds. They form over warm ocean waters and move with the prevailing winds. When a cyclone makes landfall, it can cause widespread damage from heavy winds, storm surges, and flooding. Proper preparedness and mitigation measures such as constructing cyclone resilient infrastructure, issuing early warnings, and evacuating people to shelters can help reduce loss of life and damage from cyclones.
A disaster is a sudden, calamitous event that seriously disrupts the functioning of a community or society and causes human, material, and economic or environmental losses that exceed the community’s or society’s ability to cope using its own resources. Most disasters are caused by natural termed as natural disasters but sometimes they have human origins and they are called as man-made disasters
1) Lightning occurs more frequently during the inter-monsoon periods of March-April and October-November due to high temperatures, low winds, and high water vapor forming thunderstorm clouds.
2) In cumulonimbus clouds, positively charged regions form in the upper parts of clouds while negatively charged regions form in the lower parts. When the charge difference becomes too great, lightning occurs as a discharge between the regions.
3) There are three main types of lightning: cloud-to-cloud, cloud-to-air, and cloud-to-ground, with the latter posing the greatest risk to humans and structures on the ground.
Thunder and lightning cai,ppt-alphonsa joseph, social scienceAchu Jose
The document provides directions for a computer-assisted lesson on thunder and lightning. It instructs students to follow the on-screen directions, which include viewing slides and pictures about thunderstorm ingredients and the life cycle of a thunderstorm. Students are asked to identify elements in pictures and respond to textboxes. Brain teasers and relaxers are included to develop concepts and allow self-checking. The lesson concludes with a test of knowledge about what was learned.
The document summarizes lightning phenomenon and describes various types of lightning strikes and their effects. It discusses lightning protection methods for structures. Key points:
1. Lightning is a sudden discharge between clouds or between clouds and the ground. It can cause significant damage to structures and injury.
2. There are different types of ground lightning strikes depending on the direction of charge. The most common is negative cloud-to-ground lightning.
3. Effects of lightning include thermal, acoustic, luminous, electrodynamic, and indirect effects from surges. Protection methods aim to safely conduct lightning currents to ground.
Information on fatalities in Bangladesh as a result of lightning flashes has been extracted from a database on disastrous weather events of the Department of Disaster Management Bangladesh, records dating from 1990 to mid-2017 indicated that about 3056 persons have been killed by Lightning strikes in Bangladesh. The maximum number of Lightning fatalities is observed in the district of Chapai Nawabgonj is 140 which rate of fatalities is 3.57 per million per year. And for Sunamganj is 132 which rate of fatalities is 2.24 per million per year. The spatial variation shows that Lightning are higher over North side for Bangladesh. A significant number of males (74%) have been killed by Lightning flashes compared to females (9%), and children (17%) in Bangladesh, which is most likely due to the larger proportion of males working and moving outdoors in lonely conditions. The overall fatality rate is about 1.09 % per million populations per year in Bangladesh. The lightning fatalities are significantly more common in the pre monsoon season. Therefore, this study provides useful information on the risky lightning time in Bangladesh to indicate a public awareness and lightning safety.
The document discusses thunderstorm safety tips. It explains that thunderstorms occur when warm and cool air collide, producing lightning. Lightning strikes can carry 25,000 amps of electricity. The document recommends preparing for storms by checking weather reports and unplugging electronics. During a storm, it advises taking shelter indoors away from windows or outdoors in low-lying, open areas. It also provides tips for what to do if someone is struck by lightning.
Lightning threat and protection from lightning information and product by jm...Mahesh Chandra Manav
Claim not Blame any Body
Now Rain is Above to Start and Many Cities of India Witness Lightning which may Cause Death and Loss of Assets (Electrical Equipment's, Data Communication, Control and Instrumentation and Home Gadget.
Only we can save Human Lives and Assets while Adopting Protection use of Earthing ,Lightning and Surge Protection.
JMV LPS Ltd will ensure to offer Awareness, Design (Earthing and Lightning) Installation Advise for Surge Protection.
We require All States Authority Mandatory Documents Release with advisory to Implement also Guidance to Insurance and Bank with Electrical Safety Assessment do not pass any Loan or do Insurance.
Awareness programme to Common People how to protect them self from Electrical Shocks and when Lighting Strikes.
Safety of Human Lives are prime responsibility and if any Authority or Owner of Premises found Guilty when Accident occur should be book by LAW(Including Contraction and Implementing Agencies)
We all has to pay cost for Safety and use Product and Follow Documents Strictly.
being a responsible Citizen discharge of duty for Society Should not only load is account of State and Central Govt.
We have also perform by our Self.
JAGO India JAGO Apni Responsibility se Na Bhago.
we will do right and now allow other's to do Wrong.
Lightning is usually associated with thunderstorm and regarded as the most under-recognized weather hazard, often commanding little attention from the public and the media.
The document provides information on lightning strikes and basic first aid recommendations. It outlines preventative measures one can take during a lightning storm, including seeking shelter in dense forests or low-lying areas and staying away from lone objects. The document recommends turning off electronic devices and removing metallic objects during a storm. It advises laying down with your head pointed towards potential flashes and protecting your ears if struck by lightning to aid resuscitation efforts and treat resulting injuries like burns.
This document outlines a lightning safety policy for outdoor events. It designates the event manager as the contact authorized to delay or postpone activities due to lightning. It recommends ceasing activities when lightning is detected within 6 miles, as indicated by a 30 second flash-to-bang count. When lightning is detected, an air horn will sound and teams will take shelter in designated safe structures like buildings until 30 minutes after the last lightning strike.
The document provides information on lightning safety. It discusses unsafe and safe areas during lightning, lightning myths and facts, first aid for lightning strikes, and tips for outdoor lightning safety. Statistics show that most lightning victims survive but 25% die, and certain groups like young men engaged in outdoor activities are at higher risk of lightning strikes.
Lightning strikes kill about 58 people in the U.S. each year, making it one of the top weather killers despite being underrated. Lightning results from a buildup of positive and negative charges within a thunderstorm cloud and between the cloud and ground. When the charge difference becomes large enough, a conductive path forms from the cloud to the ground through which current surges, creating a visible lightning flash. The safest place during a thunderstorm is inside a substantial structure without plumbing or electronics.
Lightning Safety Awareness by Osman GoniOsman Goni
This presentation on lightning safety awareness covers the topics-
Facts and Figures of lightning
Understanding Thunder-storm and Lightning
Lightning Safety Outdoors
Lightning Safety Indoors
Lightning Safety & Sport Activities
Medical Effects on Lightning Victims
Initiatives on Lightning Safety to Government and BDRCS
Plan and Protect yourself from Lightning Strikes
Lightning Safety Awareness Session by Osman GoniOsman Goni
Lightning Safety Awareness and Protective Measures in Bangladesh. This presentation covers the topics
Facts and Figures of lightning
Understanding Thunder-storm and Lightning
Lightning Safety Outdoors
Lightning Safety Indoors
Lightning Safety & Sport Activities
Medical Effects on Lightning Victims
Initiatives on Lightning Safety to Government and BDRCS
Plan and Protect yourself from Lightning Strikes
Tornado: Local Disaster but National ConcernSajid Karim
The presentation focuses on the following objectives-
Within the global characteristics, to understand what is tornado and how it is formed?
What are the impacts of tornado?
What are the disaster risk of tornado in Bangladesh?
What is the existing disaster management structure to address tornado?
What are the challenges for Bangladesh and how to overcome those?
Thunderstorms are storms that produce lightning and thunder. They form from single or clusters of cumulonimbus clouds and can affect small or large areas. There are different types of thunderstorms including air-mass and severe thunderstorms. Thunderstorms go through various stages of development from cumulus to mature to dissipating. Microbursts are strong localized downdrafts under thunderstorms that can cause damage. Lightning forms due to separation of charges within thunderclouds and can be dangerous, so safety precautions should be taken during storms.
1) The document analyzes the effect of lightning strikes and thunder on television signal transmission in Nigeria.
2) Data collected from the Nigerian Television Authority in 2013-2014 showed that heavy lightning at the beginning and end of the rainy season caused image fading, breaking of images, and sometimes caused transmitters to go offline.
3) Lightning strikes damaged transmitters by affecting parts like exciters, power units, and modulators. This kept stations offline for weeks for repairs.
4) The author concludes that Nigeria's communication commission should ensure television stations are digitalized and have powerful lightning arresters installed to reduce the effects of lightning on transmissions.
VULNERABILITY ASSESSMENT AND DAMAGE MITIGATION FOR RCC BUILDINGS DUE TO NON S...Johana Sharmin
This presentation was prepared to portray vulnerability assessment and damage mitigation for RCC buildings due to Non-Seismic Hazards in Bangladesh for the internal meeting of DDC office in Dhaka, Bangladesh. This is entirely based on the PWD-JICA manual for CNCRP project. In this presentation, we emphasized wind load and flood water calculation, their impact on our regular RCC building, and mitigation measures. The excel files are not included for the confidentiality purpose. This presentation helped our colleagues who were not interested in reading the manuals. I felt joyful and curious while I worked in this presentation with my colleague.
This document discusses disaster readiness and risk reduction related to hydrometeorological hazards such as tropical cyclones and storm surges. It provides information on tropical cyclone structure and formation, classifications of tropical cyclones, effects of tropical cyclones including strong winds, storm surge, and heavy rain. It also discusses mitigation strategies for reducing the destructive effects of tropical cyclones such as determining prone areas, land use planning, effective warning systems, and forecasting. Additionally, it covers storm surge risks in the Philippines and mitigation through prediction, mapping, and barriers. The document is an educational presentation on hydrometeorological hazards for a science course.
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
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Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
ENVIRONMENT~ Renewable Energy Sources and their future prospects.tiwarimanvi3129
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
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The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Recycling and Disposal on SWM Raymond Einyu pptxRayLetai1
Increasing urbanization, rural–urban migration, rising standards of living, and rapid development associated with population growth have resulted in increased solid waste generation by industrial, domestic and other activities in Nairobi City. It has been noted in other contexts too that increasing population, changing consumption patterns, economic development, changing income, urbanization and industrialization all contribute to the increased generation of waste.
With the increasing urban population in Kenya, which is estimated to be growing at a rate higher than that of the country’s general population, waste generation and management is already a major challenge. The industrialization and urbanization process in the country, dominated by one major city – Nairobi, which has around four times the population of the next largest urban centre (Mombasa) – has witnessed an exponential increase in the generation of solid waste. It is projected that by 2030, about 50 per cent of the Kenyan population will be urban.
Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
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Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Epcon is One of the World's leading Manufacturing Companies.EpconLP
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
Epcon is One of the World's leading Manufacturing Companies.
Lightning in Bangladesh
1. Prepared By
Md. Arifuzzaman Arif
MSc in Disaster Management
Department of Geography and Environment
University of Dhaka
BSc in Forestry & Wood Technology Discipline
Khulna University
Lightning in Bangladesh
3. What is Lightning?
The occurrence of a natural electrical discharge of very
short duration and high voltage between a cloud and the
ground or within a cloud, accompanied by a bright flash.
Every day 8 million lightning are taking place
somewhere on the earth.
In Bangladesh, Lightning is declared as natural
disaster in 17 May, 2016
4. Lightning Facts
▸ Heat exceeds 50,000 degrees F (3 times
hotter than the surface of the sun)
Lightning strikes earth a 100 times each second
Duration of one stroke of lightning, 1/5th of second.
Lightning can travel at speeds of 60,000 m/sec.
Lightning strokes ranges from 100 m – 8 km length.
Lightning containing an average charge of 30 to 50 lakhs
volts
5. Simply, lightning is the meeting of
negative charges with positive charges
negative charges
positive charges
6. For many years, people used to believe
that lightning is a holy event which is
related to gods that punish those people
who disobey them.
Franklin is the first one who proved that
the lightning is an electric spark
Historical Background
9. Mechanism of Lightning
The lightning occurs in phases
The scientists discovered that the lightning occurs in
two main phases which are the crossing phase and the
returning phase, and they captured photos for these two
phases and said with certainty that the lightning
descends from the cloud and returns again!!
10. Mechanism of Lightning
The first phase
A negative charge descends
from the cloud toward the
ground in part of a second.
The second phase
The positive charge on
the ground meets with
that negative charge.
11. Mechanism of Lightning
The third phase
As a result, a strong electric
spark generates and goes
toward the cloud.
The fourth phase
The returned electric charge and
that is the lightning beam, all of
these four phases happens in 25
Millisecond.
12. Where Does Lightning Strike First
Tall objects such as trees and
skyscrapers are commonly struck
by lightning.
Mountains also make good targets.
The reasons for this is their tops are
closer to the base of the storm cloud.
However, this does not always
mean tall objects will be struck.it all
depends on where the charges
accumulate. Lightning can strike the
ground in open field even if the tree
line is close by.
14. Types of loss resulting from different
types of damage
15. Damage due to lightning
Lightning striking a structure can result in damage to the structure
itself and to its occupants and contents, including failure of
equipment and especially of electrical and electronic systems.
The damages and failures may also extend to the surrounding of
the structure and may even involve the local environment. The
scale of this extension depends on the characteristics of the
structure and on the characteristics of lightning.
A typical lightning stroke is a dramatically powerful natural event
capable of damaging even intentionally protected structures.
It injuries or sometimes even kills animals and people instantly.
16. Damage due to lightning
It can cause fire and shatter
buildings resulting in lot of
destruction and damage.
It can burn trees and also
causes forest fire
23. Safety Measures
Take shelter in a building or car
Do not lie flat on ground
Stay about 15 feet
away from each other
Stay away from all types of water
bodies because water is an
excellent conductor of electricity
24. Safety Measures
Do not take baths and showers
during storms, as water is an
excellent conductor of electricity.
It is safer to use mobile phones and cordless
phones during lightning
25. First aid for Lightning Victims
Administer first aid as
quick as possible
If unconscious: Check
breathing and pulse
Person has a pulse, but
not breathing: Begin
CPR
Check for other
injuries
Most die from heart
attacks/stop breathing
If not CPR qualified:
Call EMS immediately
Keep them calm
Stay with them until
help arrives
26. Lightning Protection System
A lightning conductor is
fixed on the top of tall
buildings to protect them
from damage due to the
lightning
27. Lightning Protection System
The ground wires are placed above the line conductors at such positions
that practically all lightning strokes are intercepted by them (i.e. ground
wires). The ground wires are grounded at each tower or pole through as
low resistance as possible.
Overhead Ground Wires
28. Lightning Protection System
A lightning arrester or a surge diverter is a protective device which
conducts the high voltage surges on the power system to the ground
lightning arrester or Surge diverter
Provide protection for indirect strokes
29. Lightning Protection System
The Earthing Screen
It consists of a network of copper conductors (generally called shield or screen)
mounted all over the electrical equipment in the sub-station or power station.
The shield is properly connected to earth on at least two points through a low
impedance.
On the occurrence of direct stroke on the station, screen provides a low
resistance path by which lightning surges are conducted to ground.
The limitation of
this method is that
it does not provide
protection against
the travelling waves
which may reach
the equipment in
the station.
30. Recommendations
No place outside is safe when thunderstorms are in the area.
If anyone hear thunder, lightning is close enough to strike him or
her.
If anyone hear thunder, immediately move to safe shelter.
Stay in safe shelter at least 30 min after hear the last sound of
thunder.
Planting tall tree such as palm trees in the villages and sub urban
areas.
Creating awareness on the lightning safety by organizing
trainings, seminars etc. in the union level.
Lightning safety guidelines should be included in the children’s
curriculum starting from the primary schools.
Lightning safety measure should be published in the television
radios and dramas.
31. Conclusion
Lightning is common meteorological hazard in Bangladesh
and it is dangerous natural force. Many lightning victims are
caught outside during a storm because they did not act
promptly to get to a safe place. Proper planning and safe
practices can easily increase lightning safety when working
outdoors.
32. Bangladesh disaster-related statistics 2015: Climate change and natural
disaster perspectives.BBS, Statistics and Informatics Division, Ministry of
planning Bangladesh.
BBS,2012: Housing and population census 2011. BBS, Statistics and
Informatics Division, Ministry of planning Bangladesh.
Emergency operation Center-Department of Disaster Management
Bangladesh
Chowdhury M.A.M., and U.K. De,1995: Pre monsoon thunderstorm activities
over Bangladesh from 1983 to 1992.
Martin A Uman, All About Lightning, Courier Dover Publications, 1987.
G V Cooray, Vernon Cooray, The Lightning Flash, IET, 2003.
Richard Kithil, Fundamentals of Lightning Protection, National Lightning
Safety Institute.
Hugh Christian, Steven Goodman, Observing Lightning from Space,
www.nasa.gov, 1998.
The Lightning Process: Keeping in Step, www.noaa.gov, March 9, 2004.
Steve Price, Patrick Barry, Tony Phillips, Where Lightning Strikes,
www.nasa.gov, Dec. 5, 2001.
References
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www.csgnetwork.com/timemath.html
www.home.earthlink.net/~jimlux/lfacts.htm
lightning glossary, www.lightningeliminators.com
Leslie Mullen, Three bolts from the blue, www.nasa.gov, June 8, 1999.
http://earthobservatory.nasa.gov/Newsroom/view.php?id=2095
Lightning and Thunder, www.fma-research.com
References