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This document defines and provides details about various natural disasters: earthquakes are caused by slippage of tectonic plates and release energy through waves; landslides involve ground movements like rock falls and slope failures; floods are overflowing of water that submerges normally dry land; volcanoes are openings in the Earth's crust that allow lava and gases to escape; the 2011 Japanese tsunami was the largest and most catastrophic, resulting in over 20,000 deaths and thousands more missing or injured. It defines a tsunami as a series of waves caused by large bodies of water being displaced. The effects of the 2011 Japanese tsunami included over 300,000 people still in temporary housing and most nuclear power plants being closed.
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NATURAL CALAMITIES
This document defines and provides brief descriptions of major natural disasters:
- Tsunami, flood, drought, storm, and earthquake are listed as major natural disasters.
- A flood is defined as an overflow of water that submerges land, usually caused by river, lake, or ocean overflow.
- An earthquake is defined as the shaking of the Earth's surface from a sudden release of energy, creating seismic waves that can destroy cities.
- A tsunami is defined as a series of waves caused by large volumes of water displacement, often from earthquakes or volcanic eruptions.
Natural Calamities
The document defines and describes four natural calamities: earthquake, tornado, tsunami, and flood. Earthquakes are sudden violent ground shaking caused by crustal or volcanic movements. Tornadoes are destructive rotating funnel clouds under large storms. Tsunamis are large sea waves caused by earthquakes or other disturbances. Floods occur when rivers receive excess water from rain or disasters, causing overflow onto surrounding land.
Disasters(by aagman saini)
Natural disasters include earthquakes, volcanic eruptions, cyclones, floods, droughts, tornadoes, and tsunamis. They are caused by shifts in the Earth's crust or severe weather events and can seriously disrupt communities. While often natural in origin, human activities may exacerbate some disasters by increasing their frequency or severity. Understanding the causes of different disasters may help mitigate their harmful impacts.
Manoj
The document discusses tsunamis, which are large sea waves caused by earthquakes, volcanic eruptions, landslides, or cosmic impacts. Tsunamis are among the most destructive natural disasters and can cause massive loss of life and property damage. The deadliest tsunami on record was the 2004 Christmas tsunami in the Indian Ocean, which killed an estimated 300,000 to 350,000 people after a 9.2 magnitude earthquake generated a series of large waves. Proper planning through early warning systems and evacuation of coastal areas can help reduce loss of life from future tsunamis.
Natural disasters
This document defines and describes several types of natural disasters:
Volcanic eruptions occur when pressure forces magma up through a volcano's conduit. Earthquakes are caused by the sudden movement of tectonic plates. Floods happen when heavy rainfall or melting snow causes water levels in rivers and lakes to rise over land. The document also discusses avalanches, droughts, forest fires, hurricanes, lightning strikes, and tsunamis, explaining the causes and impacts of each type of natural disaster.
Tsunami
Tsunami are series of large water waves caused by the displacement of water in oceans or large lakes, often triggered by earthquakes. They occur when the seafloor abruptly deforms and displaces the overlying water. Tsunami damage coastal areas through immense walls of fast moving water that smash into land, and by draining off the land while carrying large debris. Tsunami waves have both positive and negative peaks, so the first wave making landfall can either be a massive breaking wave or sudden flooding from the ridge, or a dramatic drawback of the shoreline if the trough arrives first.
natural disaster
A flood is a natural disaster where an area of dry land is suddenly submerged under water. It can be caused by heavy rain, dam breaking, overflowing rivers, or melting ice or snow. Prevention methods include retaining walls, town planning, vegetation, and education. An earthquake is a sudden shaking of the earth's crust due to the release of stress along geological faults or volcanic activity. A cyclone is an area of circular wind with low pressure at the center called the eye. Volcanoes form when hot magma escapes from below a planet's surface. Volcanic eruptions are studied in volcanology and measured using the volcanic explosivity index.
Natural Disasters by Roshan Adhithya
This document provides information about different types of natural disasters including earthquakes, floods, volcanic eruptions, cyclones, and tornados. Pictures are included to illustrate each type of disaster. It discusses the causes and impacts of each disaster type, such as building collapse, fires, and damage to infrastructure from earthquakes or volcanic ash. Statistics are given showing most natural catastrophes in 2012 were weather related, with over $170 billion in total costs. The document concludes with potential ways to prevent impacts of natural disasters like famine.
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NATURAL CALAMITIES
This document defines and provides brief descriptions of major natural disasters:
- Tsunami, flood, drought, storm, and earthquake are listed as major natural disasters.
- A flood is defined as an overflow of water that submerges land, usually caused by river, lake, or ocean overflow.
- An earthquake is defined as the shaking of the Earth's surface from a sudden release of energy, creating seismic waves that can destroy cities.
- A tsunami is defined as a series of waves caused by large volumes of water displacement, often from earthquakes or volcanic eruptions.
Natural Calamities
The document defines and describes four natural calamities: earthquake, tornado, tsunami, and flood. Earthquakes are sudden violent ground shaking caused by crustal or volcanic movements. Tornadoes are destructive rotating funnel clouds under large storms. Tsunamis are large sea waves caused by earthquakes or other disturbances. Floods occur when rivers receive excess water from rain or disasters, causing overflow onto surrounding land.
Disasters(by aagman saini)
Natural disasters include earthquakes, volcanic eruptions, cyclones, floods, droughts, tornadoes, and tsunamis. They are caused by shifts in the Earth's crust or severe weather events and can seriously disrupt communities. While often natural in origin, human activities may exacerbate some disasters by increasing their frequency or severity. Understanding the causes of different disasters may help mitigate their harmful impacts.
Manoj
The document discusses tsunamis, which are large sea waves caused by earthquakes, volcanic eruptions, landslides, or cosmic impacts. Tsunamis are among the most destructive natural disasters and can cause massive loss of life and property damage. The deadliest tsunami on record was the 2004 Christmas tsunami in the Indian Ocean, which killed an estimated 300,000 to 350,000 people after a 9.2 magnitude earthquake generated a series of large waves. Proper planning through early warning systems and evacuation of coastal areas can help reduce loss of life from future tsunamis.
Natural disasters
This document defines and describes several types of natural disasters:
Volcanic eruptions occur when pressure forces magma up through a volcano's conduit. Earthquakes are caused by the sudden movement of tectonic plates. Floods happen when heavy rainfall or melting snow causes water levels in rivers and lakes to rise over land. The document also discusses avalanches, droughts, forest fires, hurricanes, lightning strikes, and tsunamis, explaining the causes and impacts of each type of natural disaster.
Tsunami
Tsunami are series of large water waves caused by the displacement of water in oceans or large lakes, often triggered by earthquakes. They occur when the seafloor abruptly deforms and displaces the overlying water. Tsunami damage coastal areas through immense walls of fast moving water that smash into land, and by draining off the land while carrying large debris. Tsunami waves have both positive and negative peaks, so the first wave making landfall can either be a massive breaking wave or sudden flooding from the ridge, or a dramatic drawback of the shoreline if the trough arrives first.
natural disaster
A flood is a natural disaster where an area of dry land is suddenly submerged under water. It can be caused by heavy rain, dam breaking, overflowing rivers, or melting ice or snow. Prevention methods include retaining walls, town planning, vegetation, and education. An earthquake is a sudden shaking of the earth's crust due to the release of stress along geological faults or volcanic activity. A cyclone is an area of circular wind with low pressure at the center called the eye. Volcanoes form when hot magma escapes from below a planet's surface. Volcanic eruptions are studied in volcanology and measured using the volcanic explosivity index.
Natural Disasters by Roshan Adhithya
This document provides information about different types of natural disasters including earthquakes, floods, volcanic eruptions, cyclones, and tornados. Pictures are included to illustrate each type of disaster. It discusses the causes and impacts of each disaster type, such as building collapse, fires, and damage to infrastructure from earthquakes or volcanic ash. Statistics are given showing most natural catastrophes in 2012 were weather related, with over $170 billion in total costs. The document concludes with potential ways to prevent impacts of natural disasters like famine.
Tsunami
Tsunamis are a series of waves caused by the displacement of a large volume of water, generally in an ocean or large lake. They are generated by earthquakes, volcanic eruptions, landslides, glacier calvings, meteorite impacts, or underwater explosions including nuclear tests. The principal generation mechanism of a tsunami is the displacement of a substantial volume of water due to earthquakes, landslides, volcanic eruptions, glacier calvings, or rarely, meteorites and nuclear tests. The 2011 earthquake and tsunami in Japan was a magnitude 9.0 quake that created a tsunami up to 40 meters high, warning countries near the Pacific Ocean of one of the most deadly tsunamis
Science tsunami
A tsunami is a series of waves caused by the displacement of a large volume of water, generally in an ocean or large lake. Earthquakes, volcanic eruptions, underwater explosions, landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami. When an earthquake moves the seafloor upward, it also pushes the water upward forming tsunami waves that grow higher as they reach shallower waters. In 2011, a magnitude 9 earthquake in Japan unleashed a tsunami that caused a nuclear disaster and displaced over 230,000 people, many of whom were still living in temporary housing four years later.
Natural disasters Group 6
This document defines and describes different types of natural disasters including floods, tsunamis, storms, limnic eruptions, and cyclones. Floods are defined as overflow of water that submerges dry land. Tsunamis resemble rapidly rising tides rather than waves and arrive in wave trains. A limnic eruption occurs when carbon dioxide erupts from deep lake water, endangering wildlife. Cyclones are storm systems with low pressure and thunderstorms that produce strong winds and rain by feeding on heat from rising moist air.
Natural disasters Group3
This document summarizes different types of natural disasters connected to water: storms, floods, tsunamis, and heavy rainfall. Storms are strong gusty winds over bodies of water. Floods occur when water overflows river or lake banks or from heavy rainfall, including areal, riverine, and coastal flooding. Tsunamis are series of waves caused by displacement of water, often due to earthquakes. Heavy rainfall consists of water droplets that have condensed from vapor and fall due to gravity, impacting at increasing speeds with larger droplet sizes. All of these natural disasters can cause loss of life or property damage.
Disaster management
Environmental science& Engg:
Hazard
Any phenomenon that has the potential to cause disruption or damage to people and their environment.
For example, an earthquake can cause a tsunami.
Disaster
Natural disasters are slightly different. They are the effects of natural hazards on humanity.
For example, the tsunami in Indonesia caused a great amount of loss of property and more importantly lives.
Natural disasters Group4
Natural disasters connected with water can include tsunamis, storms, and floods. A tsunami is a series of waves caused by the displacement of a large volume of water, often triggered by earthquakes, volcanic eruptions, or landslides under the sea. Storms generally lead to severe weather like heavy rain, flooding, lightning, or strong winds that can damage property. A flood is an overflow of water that covers land not usually submerged, which can occur when a river, lake, or rainwater rises and spills outside of normal boundaries.
Natural disasters Group6
This document discusses various natural disasters connected to water. It defines floods as an overflow of water that submerges land, usually due to excessive water in a river, lake, or from heavy rainfall. Drought is defined as an extended period without sufficient water supply. Earthquakes result from a sudden release of energy in the Earth's crust that causes seismic waves. Volcanic eruptions occur when a volcano actively releases lava and gases. Tsunamis are large ocean waves caused by earthquakes, landslides, or volcanic eruptions displacing water. Hurricanes are large storm systems that form over warm ocean waters and bring strong winds and rain.
Natural Disasters
The document provides information about various natural disasters including earthquakes, tornadoes, landslides, volcanoes, floods, droughts, hurricanes, famines, tsunamis, forest fires and cyclones. It defines each disaster and provides some key details and examples of significant events for some of the disasters.
natural disters
A tornado is a violently rotating column of air that extends from a thunderstorm to the ground. They form where warm moist air meets cold dry air and can reach wind speeds over 300 mph. Most tornadoes last less than 10 minutes and cause extreme damage due to their high winds.
Signs From Earth
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides reacting with water molecules in the atmosphere to produce acids that can harm plants, animals, and infrastructure through wet deposition. Hurricanes and tornadoes are powerful storm systems - hurricanes form over warm ocean waters and have strong winds while tornadoes are rotating columns of air between the ground and storm clouds. Tsunamis are large sea waves caused by displacement of water in the oceans, usually triggered by earthquakes or volcanic eruptions under the sea. Drought occurs when a region experiences a prolonged shortage of water, while earthquakes are caused by a sudden release of energy in the Earth's crust that generates seismic waves. Global warming is raising temperatures and causing
Natural disasters Group2
Floods occur when bodies of water overflow their normal boundaries due to excessive water accumulation. Hailstorms form when rain drops become ice before hitting the ground, and heavy hailstorms can damage agriculture. Strong winds over bodies of water produce storms and dangerous waves. Tsunamis are caused by underwater earthquakes and have much longer wavelengths than ordinary waves, enabling them to destroy coastal areas. Acid rain forms from air pollution and causes acidification of land and water. Landslides are sudden movements of soil and rock masses often triggered by heavy rainfall or thawing that threaten natural and valley slopes. Fog reduces visibility dangerously by suspending water or ice crystals in the air. Ocean currents are directed sea water movements produced
Natural disasters Group1
The document discusses several types of natural disasters including avalanches, floods, tsunamis, storms, and limnic eruptions. Avalanches pose a constant danger of killing many people and animals. Floods from heavy rain or storm surge endanger both populations and infrastructure in urban areas. Tsunamis occur when an enormous wave of water floods inland areas. Storms bring strong winds and huge waves out at sea. Limnic eruptions are rare events where dissolved carbon dioxide erupts from deep lake water, suffocating wildlife, livestock, and humans near the lake.
Natural disasters Group5
Natural disasters connected with water can include floods, limnic eruptions, tsunamis, and storms. A flood occurs when an overflow of water submerges land, usually caused by heavy rain or melting snow that causes a river or lake to overflow. A limnic eruption happens when gases like carbon dioxide erupt from deep lake water, endangering wildlife and humans. Tsunamis are large sea waves caused by earthquakes or landslides under the sea. Storms are disturbed weather conditions involving strong winds, rain, snow, or other precipitation.
Natural disaster ppt hc
Natural disasters such as floods, hurricanes, tornadoes, volcanic eruptions, earthquakes and tsunamis are major adverse events caused by natural processes that can result in loss of life, property damage or economic impacts depending on the resilience of the affected population. While an event may not cause widespread damage in an unpopulated area, the same event can have disastrous consequences if it occurs in a vulnerable area, as seen with the 2015 Nepal earthquake that caused lasting damage requiring years of repairs. Earthquakes are caused by the sudden release of energy in the Earth's crust that creates seismic waves, which can be powerful enough to destroy cities. Floods occur when water submerges land that is usually dry, such as from overflowing
exogenous hazards
Cyclones are large-scale rotating air masses that form around low-pressure centers. They are characterized by inward spiraling winds and can cause heavy rainfall, strong winds, landfalls, and tornadoes. There are several types of cyclones including tropical cyclones that form over oceans in summer, hurricanes and typhoons being tropical cyclones, and polar cyclones that occur in polar regions in winter. Tropical cyclones are categorized from 1 to 5 based on their intensity and wind speeds.
Natural disaster
1) A natural disaster is defined as a natural hazard that causes significant financial and human losses through its impact on the environment. Examples include floods, earthquakes, tsunamis, and epidemics.
2) Natural disasters occur when natural hazards intersect with vulnerabilities in human systems. Major causes are seismic activity, soil erosion, and the greenhouse effect.
3) Natural disasters can be categorized as either hydrometeorological, involving atmospheric/hydrological phenomena like floods and storms, or geological, involving earthquakes, tsunamis and landslides.
Environmental Hazards
This document discusses environmental hazards such as earthquakes and volcanoes. It defines earthquakes as sudden movements caused by faults or volcanic activity. Earthquake waves are categorized into body waves (P and S waves) and surface waves (Love and Rayleigh waves). Volcanoes form when magma rises from the earth's crust and erupts. Volcanic eruptions can be effusive or explosive depending on gas and viscosity levels. Monitoring seismic activity, ground deformation, and gas outputs provides signs of impending volcanic eruptions. Volcanic flows also pose hazards, though spraying water can help slow them.
Natural Disasters
This document discusses different types of natural disasters:
1) Earthquakes are caused by slippage within geological faults and release energy in the Earth's crust, creating seismic waves.
2) Volcanic eruptions can cause harm through explosions, lava flows that destroy buildings and plants, and ash clouds that cause roof collapses.
3) Tsunamis are a series of large waves caused by displacement of water in oceans or lakes, often due to undersea earthquakes or landslides.
Presentation4 by Roshan Adhithya
This document defines and provides examples of different types of natural phenomena including:
- Geological phenomena such as mineralogic and lithologic phenomena that are explained by geology.
- Meteorological phenomena such as weather events involving temperature, pressure, and moisture that are studied at various scales.
- Oceanographic phenomena under the sea like tsunamis and ocean currents.
- Specific atmospheric optical phenomena like lenticular clouds and circumhorizontal arcs formed by ice crystals in cirrus clouds.
Natural Disasters Lecture 1 (Introduction)
This document provides an introduction to natural disasters by defining key terms like hazard, disaster, catastrophe, and natural. It then lists common natural disasters and explains how one event can trigger another. The document discusses measuring the magnitude of disasters, how frequently they occur, and the relationship between magnitude and frequency. It also addresses how population growth, urbanization, mitigation efforts, historical patterns, warning systems, risk maps, engineering, and preparedness can influence the impacts of natural disasters.
Introduction to Natural Disasters
A natural disaster is defined as a major adverse event resulting from natural processes of the Earth; examples include droughts, earthquakes, floods, landslides, monsoons, tornadoes, volcanic eruptions, tsunamis, hurricanes, and typhoons. The document provides descriptions of each type of natural disaster and directs the reader to an interactive notebook activity exploring causes and effects of natural disasters through a video and news article analysis.
Natural disaster powerpoint
Natural disasters can severely injure or kill people and cause immense property damage. In 2010, natural disasters killed 295,000 people and cost insurers $218 billion globally. The 2011 Tsunami and earthquake in Japan killed over 10,000 people, while Hurricane Katrina in 2005 alone caused $81 billion in property damage to New Orleans, flooding 80% of the city under 15 feet of water and reducing the city's population. While natural disasters cannot be prevented, organizations help with relief efforts, rebuilding, and preparing for aftermaths that can include landslides and fires.
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Tsunamis are a series of waves caused by the displacement of a large volume of water, generally in an ocean or large lake. They are generated by earthquakes, volcanic eruptions, landslides, glacier calvings, meteorite impacts, or underwater explosions including nuclear tests. The principal generation mechanism of a tsunami is the displacement of a substantial volume of water due to earthquakes, landslides, volcanic eruptions, glacier calvings, or rarely, meteorites and nuclear tests. The 2011 earthquake and tsunami in Japan was a magnitude 9.0 quake that created a tsunami up to 40 meters high, warning countries near the Pacific Ocean of one of the most deadly tsunamis
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A tsunami is a series of waves caused by the displacement of a large volume of water, generally in an ocean or large lake. Earthquakes, volcanic eruptions, underwater explosions, landslides, glacier calvings, meteorite impacts and other disturbances above or below water all have the potential to generate a tsunami. When an earthquake moves the seafloor upward, it also pushes the water upward forming tsunami waves that grow higher as they reach shallower waters. In 2011, a magnitude 9 earthquake in Japan unleashed a tsunami that caused a nuclear disaster and displaced over 230,000 people, many of whom were still living in temporary housing four years later.
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This document defines and describes different types of natural disasters including floods, tsunamis, storms, limnic eruptions, and cyclones. Floods are defined as overflow of water that submerges dry land. Tsunamis resemble rapidly rising tides rather than waves and arrive in wave trains. A limnic eruption occurs when carbon dioxide erupts from deep lake water, endangering wildlife. Cyclones are storm systems with low pressure and thunderstorms that produce strong winds and rain by feeding on heat from rising moist air.
Natural disasters Group3
This document summarizes different types of natural disasters connected to water: storms, floods, tsunamis, and heavy rainfall. Storms are strong gusty winds over bodies of water. Floods occur when water overflows river or lake banks or from heavy rainfall, including areal, riverine, and coastal flooding. Tsunamis are series of waves caused by displacement of water, often due to earthquakes. Heavy rainfall consists of water droplets that have condensed from vapor and fall due to gravity, impacting at increasing speeds with larger droplet sizes. All of these natural disasters can cause loss of life or property damage.
Disaster management
Environmental science& Engg:
Hazard
Any phenomenon that has the potential to cause disruption or damage to people and their environment.
For example, an earthquake can cause a tsunami.
Disaster
Natural disasters are slightly different. They are the effects of natural hazards on humanity.
For example, the tsunami in Indonesia caused a great amount of loss of property and more importantly lives.
Natural disasters Group4
Natural disasters connected with water can include tsunamis, storms, and floods. A tsunami is a series of waves caused by the displacement of a large volume of water, often triggered by earthquakes, volcanic eruptions, or landslides under the sea. Storms generally lead to severe weather like heavy rain, flooding, lightning, or strong winds that can damage property. A flood is an overflow of water that covers land not usually submerged, which can occur when a river, lake, or rainwater rises and spills outside of normal boundaries.
Natural disasters Group6
This document discusses various natural disasters connected to water. It defines floods as an overflow of water that submerges land, usually due to excessive water in a river, lake, or from heavy rainfall. Drought is defined as an extended period without sufficient water supply. Earthquakes result from a sudden release of energy in the Earth's crust that causes seismic waves. Volcanic eruptions occur when a volcano actively releases lava and gases. Tsunamis are large ocean waves caused by earthquakes, landslides, or volcanic eruptions displacing water. Hurricanes are large storm systems that form over warm ocean waters and bring strong winds and rain.
Natural Disasters
The document provides information about various natural disasters including earthquakes, tornadoes, landslides, volcanoes, floods, droughts, hurricanes, famines, tsunamis, forest fires and cyclones. It defines each disaster and provides some key details and examples of significant events for some of the disasters.
natural disters
A tornado is a violently rotating column of air that extends from a thunderstorm to the ground. They form where warm moist air meets cold dry air and can reach wind speeds over 300 mph. Most tornadoes last less than 10 minutes and cause extreme damage due to their high winds.
Signs From Earth
Acid rain is caused by emissions of sulfur dioxide and nitrogen oxides reacting with water molecules in the atmosphere to produce acids that can harm plants, animals, and infrastructure through wet deposition. Hurricanes and tornadoes are powerful storm systems - hurricanes form over warm ocean waters and have strong winds while tornadoes are rotating columns of air between the ground and storm clouds. Tsunamis are large sea waves caused by displacement of water in the oceans, usually triggered by earthquakes or volcanic eruptions under the sea. Drought occurs when a region experiences a prolonged shortage of water, while earthquakes are caused by a sudden release of energy in the Earth's crust that generates seismic waves. Global warming is raising temperatures and causing
Natural disasters Group2
Floods occur when bodies of water overflow their normal boundaries due to excessive water accumulation. Hailstorms form when rain drops become ice before hitting the ground, and heavy hailstorms can damage agriculture. Strong winds over bodies of water produce storms and dangerous waves. Tsunamis are caused by underwater earthquakes and have much longer wavelengths than ordinary waves, enabling them to destroy coastal areas. Acid rain forms from air pollution and causes acidification of land and water. Landslides are sudden movements of soil and rock masses often triggered by heavy rainfall or thawing that threaten natural and valley slopes. Fog reduces visibility dangerously by suspending water or ice crystals in the air. Ocean currents are directed sea water movements produced
Natural disasters Group1
The document discusses several types of natural disasters including avalanches, floods, tsunamis, storms, and limnic eruptions. Avalanches pose a constant danger of killing many people and animals. Floods from heavy rain or storm surge endanger both populations and infrastructure in urban areas. Tsunamis occur when an enormous wave of water floods inland areas. Storms bring strong winds and huge waves out at sea. Limnic eruptions are rare events where dissolved carbon dioxide erupts from deep lake water, suffocating wildlife, livestock, and humans near the lake.
Natural disasters Group5
Natural disasters connected with water can include floods, limnic eruptions, tsunamis, and storms. A flood occurs when an overflow of water submerges land, usually caused by heavy rain or melting snow that causes a river or lake to overflow. A limnic eruption happens when gases like carbon dioxide erupt from deep lake water, endangering wildlife and humans. Tsunamis are large sea waves caused by earthquakes or landslides under the sea. Storms are disturbed weather conditions involving strong winds, rain, snow, or other precipitation.
Natural disaster ppt hc
Natural disasters such as floods, hurricanes, tornadoes, volcanic eruptions, earthquakes and tsunamis are major adverse events caused by natural processes that can result in loss of life, property damage or economic impacts depending on the resilience of the affected population. While an event may not cause widespread damage in an unpopulated area, the same event can have disastrous consequences if it occurs in a vulnerable area, as seen with the 2015 Nepal earthquake that caused lasting damage requiring years of repairs. Earthquakes are caused by the sudden release of energy in the Earth's crust that creates seismic waves, which can be powerful enough to destroy cities. Floods occur when water submerges land that is usually dry, such as from overflowing
exogenous hazards
Cyclones are large-scale rotating air masses that form around low-pressure centers. They are characterized by inward spiraling winds and can cause heavy rainfall, strong winds, landfalls, and tornadoes. There are several types of cyclones including tropical cyclones that form over oceans in summer, hurricanes and typhoons being tropical cyclones, and polar cyclones that occur in polar regions in winter. Tropical cyclones are categorized from 1 to 5 based on their intensity and wind speeds.
Natural disaster
1) A natural disaster is defined as a natural hazard that causes significant financial and human losses through its impact on the environment. Examples include floods, earthquakes, tsunamis, and epidemics.
2) Natural disasters occur when natural hazards intersect with vulnerabilities in human systems. Major causes are seismic activity, soil erosion, and the greenhouse effect.
3) Natural disasters can be categorized as either hydrometeorological, involving atmospheric/hydrological phenomena like floods and storms, or geological, involving earthquakes, tsunamis and landslides.
Environmental Hazards
This document discusses environmental hazards such as earthquakes and volcanoes. It defines earthquakes as sudden movements caused by faults or volcanic activity. Earthquake waves are categorized into body waves (P and S waves) and surface waves (Love and Rayleigh waves). Volcanoes form when magma rises from the earth's crust and erupts. Volcanic eruptions can be effusive or explosive depending on gas and viscosity levels. Monitoring seismic activity, ground deformation, and gas outputs provides signs of impending volcanic eruptions. Volcanic flows also pose hazards, though spraying water can help slow them.
Natural Disasters
This document discusses different types of natural disasters:
1) Earthquakes are caused by slippage within geological faults and release energy in the Earth's crust, creating seismic waves.
2) Volcanic eruptions can cause harm through explosions, lava flows that destroy buildings and plants, and ash clouds that cause roof collapses.
3) Tsunamis are a series of large waves caused by displacement of water in oceans or lakes, often due to undersea earthquakes or landslides.
Presentation4 by Roshan Adhithya
This document defines and provides examples of different types of natural phenomena including:
- Geological phenomena such as mineralogic and lithologic phenomena that are explained by geology.
- Meteorological phenomena such as weather events involving temperature, pressure, and moisture that are studied at various scales.
- Oceanographic phenomena under the sea like tsunamis and ocean currents.
- Specific atmospheric optical phenomena like lenticular clouds and circumhorizontal arcs formed by ice crystals in cirrus clouds.
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This document provides an introduction to natural disasters by defining key terms like hazard, disaster, catastrophe, and natural. It then lists common natural disasters and explains how one event can trigger another. The document discusses measuring the magnitude of disasters, how frequently they occur, and the relationship between magnitude and frequency. It also addresses how population growth, urbanization, mitigation efforts, historical patterns, warning systems, risk maps, engineering, and preparedness can influence the impacts of natural disasters.
Introduction to Natural Disasters
A natural disaster is defined as a major adverse event resulting from natural processes of the Earth; examples include droughts, earthquakes, floods, landslides, monsoons, tornadoes, volcanic eruptions, tsunamis, hurricanes, and typhoons. The document provides descriptions of each type of natural disaster and directs the reader to an interactive notebook activity exploring causes and effects of natural disasters through a video and news article analysis.
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Natural disasters can severely injure or kill people and cause immense property damage. In 2010, natural disasters killed 295,000 people and cost insurers $218 billion globally. The 2011 Tsunami and earthquake in Japan killed over 10,000 people, while Hurricane Katrina in 2005 alone caused $81 billion in property damage to New Orleans, flooding 80% of the city under 15 feet of water and reducing the city's population. While natural disasters cannot be prevented, organizations help with relief efforts, rebuilding, and preparing for aftermaths that can include landslides and fires.
Natural Disasters Topic 2 (Geological Systems)
The document summarizes key concepts in geology including the tectonic and hydrologic systems that shape the Earth's surface. It describes plate tectonics and mantle convection that drive the tectonic system, and the water and atmospheric processes that drive the hydrologic system through weathering and erosion. It also compares the geological features and evolution of the terrestrial planets and moons based on differences in size, composition and distance from the Sun.
Natural Disasters Topic 5a (Volcanic Eruptions)
This document provides an overview of minerals and igneous rocks. It defines minerals as crystalline solids with a specific internal structure and consistent elemental composition. Minerals have requirements of crystallinity and composition. Igneous rocks form from the cooling of magma and lava and are classified based on their mineral composition (felsic, mafic, intermediate, ultramafic) and texture (phaneritic, aphanitic, glassy). Common igneous rock types include granite, rhyolite, gabbro, and pegmatite.
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This document provides an overview of earthquakes, including what they are, the different types of seismic waves, where earthquakes occur along plate boundaries, and the different types of fault movements. It also discusses methods for measuring earthquakes, some of the largest earthquakes in history, earthquake hazards like ground shaking and liquefaction, and strategies for mitigating earthquake damage.
Natural Disasters Topic 3 (Plate Tectonics)
This document provides an overview of plate tectonic theory and the evidence that supports it. It discusses early ideas including continental drift theory and how the development of seafloor spreading theory addressed continental drift's lack of a driving mechanism. It then summarizes key evidence for seafloor spreading including the global system of mid-ocean ridges, patterns of magnetic reversals in ocean crust, and the age progression of ocean floors. This led to the modern theory of plate tectonics unifying continental drift and seafloor spreading.
Introduction to natural disasters
This document provides an introduction to natural disasters. It defines natural disasters as naturally occurring hazards including geophysical, hydrological, climatological, meteorological and biological events. Examples are given of each type. The document discusses why a course on natural disasters is useful, covering relevant scientific fields and how disasters affect both nature and humanity. Statistics are presented on economic losses and loss of life from disasters globally between 1970-2013. Ecological damage from various disasters is depicted. The document specifically discusses natural disaster risk in Hong Kong, noting it is ranked the highest risk city in Asia and 3rd globally. Common Hong Kong disasters of storms, floods and wildfires are identified, and contingency planning resources are referenced.
Natural Disasters
This document discusses natural disasters, including what defines a natural disaster versus a natural hazard. It then lists and provides brief descriptions of common natural disasters such as earthquakes, avalanches, landslides, floods, tsunamis, blizzards, droughts, and wildfires. For earthquakes specifically, it outlines what to do before, during, and after an earthquake occurs. It also notes that earthquakes are among the most likely natural disasters to occur in Chile and lists some active volcanoes in the country.
Natural disasters vocabulary
1. The document provides vocabulary activities related to natural disasters, including choosing words to describe pictures, matching disasters to descriptions, and filling in blanks with correct disaster-related words.
2. Activities include identifying words that don't belong in lists, changing bold words to correct options, and matching terms like volcanic, forest, and ocean to consequences, weather, and erosion.
3. Disasters discussed include droughts, earthquakes, floods, fires, tsunamis, tornadoes, thunderstorms, and snowstorms.
Natural disasters' Impacts & Prevention
A natural disaster is a major event caused by natural hazards that affects the environment and leads to financial, environmental, and human losses. Common natural disasters include floods, tsunamis, tornadoes, hurricanes, cyclones, volcanic eruptions, earthquakes, heatwaves, droughts, wildfires, landslides, blizzards, ice storms, and avalanches. Earthquakes, floods, and volcanic eruptions are among the natural disasters that cause the most deaths. Natural disasters can have significant individual, community, economic, and environmental impacts. While not all natural disasters can be prevented, understanding ecology and taking strategies from nature can help lessen their effects.
PPT on 10th disaster management
1) A disaster is a natural or man-made hazard that causes substantial damage, loss of life, or environmental change. Tsunamis are a specific type of natural disaster caused by large displacements of water.
2) Tsunami waves can reach over 100 feet tall and travel at speeds up to 500-800 km/hr. The 2004 Indian Ocean tsunami caused over 283,000 deaths across 11 countries.
3) Warning signs of an approaching tsunami include rapid sea level changes and strong earthquakes. Construction practices like building on high ground and using drainage systems can help reduce tsunami damage.
Disaster ppt
Disaster management involves preparing for, responding to, and recovering from disasters. A disaster is defined as any event that causes damage, loss of life, or deterioration of health beyond the capacity of local communities. Disaster nursing focuses on meeting physical and emotional needs resulting from disasters. Disasters can be natural or man-made, and affect communities in different ways depending on factors like speed of onset and duration. The phases of disaster management include preparedness, response, rehabilitation, and mitigation. Nurses play an important role in all phases through activities like community assessment, triage, disease surveillance, and psychological support.
Natural disasters
Disasters can be natural or man-made. Natural disasters include cyclones, earthquakes, tornados, volcanic eruptions, tsunamis, floods, wildfires, droughts, avalanches, and landslides. Man-made disasters involve human elements like negligence, intent, or technological failures and include nuclear bombings, acts of terrorism, and oil spills. The document then provides examples and details of some specific major natural and man-made disasters that have occurred throughout history.
Disaster management ppt
Disaster management involves dealing with and avoiding both natural and man-made disasters through preparedness, response, recovery, and mitigation efforts. It aims to reduce vulnerabilities and impacts through organized and sustained actions to analyze and manage hazards and the underlying risks. Key aspects of disaster management include preparedness before a disaster through activities like risk assessment, warning systems, and stockpiling resources; immediate response efforts during an event; and long-term rehabilitation and reconstruction work after an event to support regrowth. Effective disaster management requires coordination and planning across different levels of government, organizations, and communities.
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TSUNAMI NATURES FURY
Tsunami is a Japanese word meaning harbor wave. Tsunamis are series of large waves generated by earthquakes, landslides, volcanic eruptions, or other disturbances that displace large volumes of water. The first recorded tsunami was in 1480 BC in the Mediterranean. Tsunamis cause devastating damage when they reach coastal areas due to their ability to flood large areas inland with fast-moving water. Proper warning systems and evacuation of coastal areas can help reduce loss of life from tsunamis.
Tsunami a natural disaster
A tsunami is a series of enormous ocean waves generated by earthquakes, landslides, volcanic eruptions, or meteor impacts that displace large volumes of water and cause catastrophic damage when they reach land. Tsunamis are very difficult to detect when they approach coastal areas out in the open ocean, and can travel at over 500 mph. Areas near fault lines in the Pacific Ocean called "seismic zones" are particularly at high risk of experiencing tsunamis. On December 26, 2004, a 9.3 magnitude earthquake in the Indian Ocean triggered a devastating tsunami that killed over 230,000 people across 14 countries, with deaths reported as far away as Africa.
Tsunami
The document discusses tsunamis, their causes, effects, and history. Tsunamis are caused by underwater earthquakes, volcanic eruptions, landslides, or meteor impacts displacing large volumes of water. They have struck coastlines throughout history, including the 2004 Indian Ocean tsunami that killed over 118,000 people across several countries. Early warning systems and evacuation to higher ground can help reduce loss of life from future tsunamis.
Tsunami
The document provides information about tsunamis presented by Harsh in standard VIII A. It defines tsunamis as a series of large ocean waves caused by earthquakes under the sea. The largest tsunami was in Lituya Bay, Alaska in 1958. Earthquakes are the main cause of tsunamis as the movement of tectonic plates under the sea can sometimes cause huge displacements of water. Proper warning systems and evacuation procedures help minimize loss of life from tsunamis.
Tsunami
A tsunami is a series of waves generated by an underwater displacement of water, usually caused by earthquakes. Tsunamis are not single waves but rather a "wave train" consisting of multiple waves. They can be very destructive when reaching land, causing flooding and crushing coastal structures with fast-moving water. Proper warning systems and evacuation of low-lying areas can help reduce loss of life from these devastating natural disasters.
Natural disasters
Natural disasters are major adverse events caused by natural processes like earthquakes, floods, volcanic eruptions, and hurricanes. They often result in loss of life, property damage, and economic losses depending on a population's resilience. Common natural disasters include tsunamis caused by earthquakes under the sea, tornadoes which are violent rotating columns of air, volcanic eruptions which produce lava and ash, earthquakes caused by faults in the earth's crust, and floods from overflowing water. Forest fires, landslides, avalanches, and cyclones are also types of natural disasters, while epidemics can spread disease among human populations on a large scale.
Geohazards
Geohazards are natural hazards caused by geological processes of the Earth, such as earthquakes, volcanoes, floods, landslides, and tsunamis. These events can cause significant loss of life and property damage when they occur. Some geohazards like volcanoes and cyclones may be predicted by monitoring warning signs like changes in gases, small earthquakes, and swelling of the volcano. Major earthquakes typically occur along fault lines and are followed by aftershocks. Volcanic eruptions pose hazards from pyroclastic flows, lahars, and tsunamis they can trigger. Landslides involve the breakdown and downhill movement of rock and debris. Tsunamis are gravity waves
Tsunami
Tsunami is a Japanese word Tsu means ‘harbour’ and nami means ‘wave’.
They are called tidal waves but they have actually nothing to do with the tides. However their appearance from shore is similar to rapidly rising or falling tides.
Tsunami is a series of wave created when water is moved very quickly.
Tsunami is gravity wave system, triggered by vertical disturbances in ocean. They are long waves sometime with hundreds of miles b/w their crests, just like the concentric waves generated by an object dropped into a pool.
First tsunami was recorded in 1480 B.C. in eastern Mediterranean, when the Minoan civilization was wiped out.
A large tsunami accompanied by the earthquake of Lisbon in 1755.
The Kutch earthquake of June 16, 1819 generated strong tsunami which submerged the coastal areas and damage to ships and country made boats of fishermen.
North and South American records have dated such
events back to 1788 for Alaska and 1562 for Chile. Records of Hawaiian tsunami go back to 1821.
Tsunami hits the Mona Passage off Puerto Rico in 1918, grand banks of Canada in 1929.
Disaster management
This document discusses different types of natural disasters such as floods, tsunamis, earthquakes, volcanic eruptions, and thunderstorms. It provides definitions and examples of each type of disaster. Earthquakes are described as causing shaking and ground displacement due to slippage within geological faults. Tsunamis are defined as a series of waves caused by displacement of water, often due to earthquakes or volcanic eruptions, which can have waves up to 30 meters high. Flooding is defined as an overflow of water that submerges normally dry land.
Цунамі
A tsunami is a series of waves generated by large displacements of water, often caused by earthquakes, volcanic eruptions, landslides or other disturbances. Tsunami waves have extremely long wavelengths of up to hundreds of kilometers and grow dramatically in height and destructive power when reaching shallow coastal waters. Notable historic tsunamis include the 2004 Indian Ocean tsunami that killed over 230,000 people across 14 countries making it one of the deadliest natural disasters in modern times. Current research focuses on better understanding why some quakes trigger tsunamis while others don't and improving tsunami forecasting across ocean basins.
Tsunami a natural disater
The document discusses tsunamis, including their causes, characteristics, and historical examples. It provides details on underwater earthquakes triggering tsunamis and describes tsunamis as consisting of multiple waves rather than a single wave. Examples of destructive tsunamis throughout history are given for various regions.
TSUNAMI
The document discusses various types of tsunamis including those caused by landslides, meteorological conditions, and human activities. It provides examples of destructive meteotsunamis and discusses attempts to artificially trigger tsunamis through explosions. The characteristics of tsunamis are explained, noting that while waves have short wavelengths in deep ocean, they have much longer wavelengths and travel very quickly. The document also discusses drawback effects, forecasting tsunami probability, anatomy of tsunamis, facts about tsunamis, and preparation and safety during and after tsunamis.
Natural disasters
Natural disasters such as hurricanes, earthquakes, and volcanic eruptions can cause widespread damage and loss of life. The most destructive hurricanes include Hurricane Andrew in 1992. Major earthquakes like the 1976 Tangshan earthquake and the 2004 Indian Ocean earthquake killed hundreds of thousands. Volcanic eruptions like Mount St. Helena in 1980 and Krakatoa in 1883 caused devastation. Floods along rivers like the Huang He in China and tsunamis triggered by earthquakes, such as the devastating 2004 Indian Ocean tsunami, are also serious natural hazards.
The power of mother nature
This document discusses several natural disasters including earthquakes, avalanches, tsunamis, volcanoes, and tornadoes. It provides details on the causes and effects of each disaster. For earthquakes, it notes they are mostly caused by faults rupturing and details the relative energy levels of different magnitude quakes. For tsunamis, it explains they are caused by displacement of large water volumes, and discusses the devastating 2004 Indian Ocean and 2011 Japan tsunamis. It also summarizes information on avalanches occurring from increased snow loads, and describes volcanoes as ruptures allowing underground gases and lava to escape.
naturaldisasters2-121125072902-phpapp01.pptx
This document discusses different types of natural disasters including cyclones, earthquakes, tornados, volcanic eruptions, tsunamis, floods, wildfires, and landslides. It provides key details about each type of disaster such as defining cyclones as areas of closed circular fluid motion and earthquakes as the sudden release of energy from the earth's crust. Examples of some major disasters are given like the 1960 Chile earthquake measuring 9.5 magnitude and the 1887 Yellow River flood in China killing around 900,000 people.
Tsunami
A series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater explosions (including detonations, landslides, glacier calvings, meteorite impacts and other disturbances) above or below water all have the potential to generate a tsunami. Unlike normal ocean waves, which are generated by wind, or tides, which are generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water by a large event.
Tsunami
Tsunamis are not single waves, but rather "wave trains" consisting of multiple waves that pound the shoreline repeatedly. They are generated when earthquakes or landslides cause the seafloor to abruptly deform and vertically displace the overlying water. As the tsunami wave travels from deep to shallow water, its wavelength decreases rapidly, causing the water to pile up into tremendous crests in a process called "shoaling". Most tsunamis are caused by earthquakes in subduction zones, where an oceanic plate is being forced down into the mantle by plate tectonic forces, causing the plates to become stuck and energy to accumulate over long periods of time. Tsunamis most frequently occur in the
Tsunami Description
Tsunamis are not single waves, but rather "wave trains" consisting of multiple waves that pound the shoreline repeatedly. They are generated when earthquakes or landslides cause the seafloor to abruptly deform and vertically displace the overlying water. As the tsunami wave travels from deep to shallow water, its wavelength decreases rapidly, causing the water to pile up into tremendous crests in a process called "shoaling". Most tsunamis are caused by earthquakes in subduction zones, where an oceanic plate is being forced down into the mantle by plate tectonic forces, causing the plates to become stuck and stored seismic energy to build over long periods of time. Tsunamis most frequently occur
Fikri dinulmaula presentation1
Tsunamis are series of massive waves generated by earthquakes, landslides, or volcanic eruptions that displace large volumes of water. Most tsunamis are caused by earthquakes in subduction zones where tectonic plates converge, causing accumulated energy to suddenly release. As the plates stick together over decades, stress builds until the plates slip in an instant, shoving water upwards and generating tsunami waves. Tsunamis can travel across entire ocean basins, causing widespread damage when the waves finally crash into distant coastlines. While most frequent in the Pacific Ocean, tsunamis can occur anywhere large bodies of water exist, such as inland lakes generated by landslides, making them a global threat.
Fikri dinulmaula presentation1
Tsunamis are series of massive waves generated by earthquakes, landslides, or volcanic eruptions that occur undersea or by meteorite impacts. They are caused most often by earthquakes in subduction zones where tectonic plates converge. As the plates push against each other and strain builds, it is suddenly released in an earthquake, displacing water and generating tsunami waves. Areas near subduction zones like Japan are most at risk. When tsunamis reach land, they cause catastrophic damage through massive flooding. Understanding their causes can help identify locations that may experience future tsunamis.
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- 1. IT’S A DISASTER! BY: Laia Camarasa – Diana Núñez
- 2. Vocabulary. ● Earthquake -> An earthquake is caused by a sudden slip on a fault. The tectonic plates are always slowly moving. An earthquake releases energy in waves that travel through the earth's crust.
- 3. Landslide - > is a geological phenomenon which includes a wide range of ground movements, such as rock falls, failure of slopes and deep shallow debris flows.
- 4. A flood -> is a natural event that can have far reaching effects on people and the environment. is an overflow of water that submerges land which is usually dry.
- 5. Volcano -> is an opening, or rupture, in the surface or crust of the Earth , which allows hot lava, volcanic ash and gases to escape from the magma below the surface.
- 6. Tsunami in Japan japan tsunami was the largest and most catastrophic of the moment. There have been 20,896 dead, 3,084 missing and 6,025 injured
- 7. What is a tsunami? ● A tsunami from Japan, is a series of water waves caused by the displacement of a large volume of a body of water.
- 8. Effect of the tsunami ● On March 11, 2011 with memorial ceremonies, speeches and promises. More than 300,000 people are still in temporary housing and nearly all the country’s nuclear power plants are closed.