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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.
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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.
Natural disaster
Natural disasters are major changes that can damage the earth's land and threaten human and animal lives. They include earthquakes caused by shifting tectonic plates that release shock waves, prolonged droughts like the one in Africa in 1968 that lasted 5 years, powerful cyclones with swirling winds that can destroy infrastructure, flooding from heavy rain or snowmelt that causes rivers to overflow their banks, and wildfires ignited by lightning or humans that can spread quickly with wind.
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.
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.
GEOGRAPHY IGCSE: EARTHQUAKES
1. An earthquake occurs when built-up tension along fault lines in the Earth's crust is suddenly released, causing the ground to shake.
2. The effects of an earthquake depend on several factors, including its magnitude on the Richter scale, distance from the epicenter, and the level of development in the affected area.
3. The 1995 Kobe earthquake in Japan caused over 30,000 injuries, left over 300,000 homeless as buildings collapsed, and led to long-term economic and social impacts as the city was rebuilt.
Tsunami
This document discusses tsunamis, which are giant waves caused by earthquakes or volcanic eruptions under the sea. Tsunamis can cause massive damage and loss of life by destroying homes and infrastructure. While impossible to prevent, their effects can be minimized through preparation measures like building in safe areas, establishing evacuation routes, and early warning systems. The document outlines dos and don'ts for before, during, and after a tsunami and emphasizes the importance of quickly evacuating coastal areas if a tsunami is detected or warned.
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.
Chapter 4 (earthquake hazards)
Disaster Readiness and Risk Reduction
Chapter 4(Earthquake Hazards)
1. Ground or Surface Rupture
2. Liquefaction
3. Earthquake-Induced Subsidence and Lateral Spreading
4. Earthquake-Induced Landslide
Recommended
Powerpoint
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.
Natural disaster
Natural disasters are major changes that can damage the earth's land and threaten human and animal lives. They include earthquakes caused by shifting tectonic plates that release shock waves, prolonged droughts like the one in Africa in 1968 that lasted 5 years, powerful cyclones with swirling winds that can destroy infrastructure, flooding from heavy rain or snowmelt that causes rivers to overflow their banks, and wildfires ignited by lightning or humans that can spread quickly with wind.
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.
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.
GEOGRAPHY IGCSE: EARTHQUAKES
1. An earthquake occurs when built-up tension along fault lines in the Earth's crust is suddenly released, causing the ground to shake.
2. The effects of an earthquake depend on several factors, including its magnitude on the Richter scale, distance from the epicenter, and the level of development in the affected area.
3. The 1995 Kobe earthquake in Japan caused over 30,000 injuries, left over 300,000 homeless as buildings collapsed, and led to long-term economic and social impacts as the city was rebuilt.
Tsunami
This document discusses tsunamis, which are giant waves caused by earthquakes or volcanic eruptions under the sea. Tsunamis can cause massive damage and loss of life by destroying homes and infrastructure. While impossible to prevent, their effects can be minimized through preparation measures like building in safe areas, establishing evacuation routes, and early warning systems. The document outlines dos and don'ts for before, during, and after a tsunami and emphasizes the importance of quickly evacuating coastal areas if a tsunami is detected or warned.
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.
Chapter 4 (earthquake hazards)
Disaster Readiness and Risk Reduction
Chapter 4(Earthquake Hazards)
1. Ground or Surface Rupture
2. Liquefaction
3. Earthquake-Induced Subsidence and Lateral Spreading
4. Earthquake-Induced Landslide
The Disasters of World: Natural Disasters
The document summarizes several types of natural disasters including floods, tornadoes, hurricanes, volcanic eruptions, and earthquakes. For each type of disaster, it describes what they are, provides examples of types, and lists some of the deadliest events by death toll and location including the China floods of 1931 which killed between 2.5-3.7 million people.
Tsunamis presentation
An earthquake at the edge of a tectonic plate can displace large amounts of water and generate a tsunami. When the ocean floor suddenly rises or drops, it throws the water above it into large waves that travel towards the shore. Most tsunamis occur in the Pacific Ocean, called the "Ring of Fire", where there is frequent seismic and volcanic activity. The Japanese word "tsunami" means "harbor wave" and describes the huge waves that can overwhelm coastal areas, as seen in the devastating 2004 Indian Ocean tsunami that killed over 280,000 people.
Earthquake in Bangladesh
Geologically active faults within 50 to 500km distance from Dhaka. Dhaka is among the 20 major world cities that are the greatest risk from earthquakes. Some of these earthquakes especially the 1762, 1812, 1865, 1885 and 1897 happened in Dhaka. If 7-8 grade in Richter Scale earthquake happen in Dhaka 70-80 percent concrete structures would just collapse and 30,00,000 peoples will die.
Natural disasters
Natural disasters such as cyclones, earthquakes, tornadoes, volcanic eruptions, tsunamis, floods, landslides, droughts, waterspouts and wildfires are some of the most damaging hazards that can occur. Cyclones have strong rotating winds and develop over warm ocean waters, while earthquakes are caused by the sudden release of energy in the Earth's crust. Tornadoes are violently rotating columns of air that can reach wind speeds over 300 mph. Volcanic eruptions violently eject lava, ash and gases from volcanic vents. Tsunamis are large sea waves caused by underwater seismic events that can flood coastal areas.
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.
Natural disasters
This document defines and describes natural disasters including tsunamis. It states that a tsunami is a series of water waves caused by the displacement of a large volume of water, usually in an ocean. Tsunamis are most commonly caused by earthquakes, volcanic eruptions, underwater explosions, and meteorite impacts. While tsunamis have a long wavelength and period in deep water, making them difficult to detect, they can travel very quickly across oceans at over 600 mph, taking only a few hours to cross an entire ocean.
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.
DRRR – Other Geological Hazards
Hello! I've created this PowerPoint presentation as a requisite in Disaster Readiness and Risk Reduction subject during SY 2019–2020.
Other Geological Hazards
- Bolide Impact
- Ground Subsidence
- Coastal Erosion
Should you need a .pptx file, kindly email me at rd.chrxlr@gmail.com.
Natural disasters
The document discusses different types of natural disasters including tornadoes, hurricanes, earthquakes, volcanoes, floods, tsunamis, winter storms, and wildfires. It provides details on the causes and effects of each type of disaster. Tornadoes are rotating funnel-shaped clouds that can produce winds over 300 mph and cause major damage. Hurricanes are massive storms with winds over 75 mph that form in the tropics and produce heavy rain, winds, waves, and tornadoes. Earthquakes result from movements of tectonic plates and cause widespread shaking, especially along fault lines.
Natural disaster[1]
Ancient civilizations attributed natural disasters like earthquakes, floods, and volcanic eruptions to anger or actions of gods. They developed complex mythologies to explain events they did not understand from a scientific perspective. While views have evolved, some still see disasters as divine punishment. Natural disasters occur due to natural geological and environmental processes rather than supernatural intervention. Our world is governed by scientific laws and disasters result from a lack of preparedness for extreme natural events, not supernatural causes.
Causes, Effects and Precautions against Earthquake
1. Earthquakes are caused by the movement of tectonic plates deep below the Earth's surface. As the plates shift and grind against each other, they release energy in the form of seismic waves.
2. Major earthquakes can cause widespread damage to infrastructure like buildings, bridges and dams, resulting in loss of life and property. They can also trigger secondary hazards such as landslides, tsunamis and fires.
3. Pakistan is prone to earthquakes, with major fault lines running along its western border. Some of the deadliest quakes in the country's history include the 2005 Kashmir earthquake that killed over 80,000 people and the 2013 Balochistan earthquake that killed 825.
Natural disasters
Natural disasters such as earthquakes, volcanoes, tidal waves, and drought can destroy life and property. Earthquakes are measured by their magnitude on the Richter scale or Modified Mercalli scale, with higher magnitudes causing more damage. Volcanoes form when magma rises up through ruptures in the earth's crust. Tidal waves, also known as tsunamis, are actually not tidal but are instead caused by displacement of water. Droughts are periods of below average precipitation that result in shortages of atmospheric, surface, or ground water supply.
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.
Earthquake 1
The document provides information about natural disasters, specifically earthquakes and tropical cyclones. It defines earthquakes and tropical cyclones, describes their causes and effects, and lists measures to minimize damage. For example, it explains that earthquakes are caused by plate tectonic movement and can cause infrastructure damage, while tropical cyclones derive energy from warm ocean waters and can bring strong winds and flooding to coastal areas.
Disaster management
• Natural Calamities like cyclones, flood, earthquake, volcanoes and landslides are normal natural events in the formation of earth, but they are disastrous when they strike human settlements.
• In India, natural disasters occur frequently . For example, about 260 million people are being affected by frequent floods which occur in eight major river valleys in 40 million ha..
• Drought affects nearly 86 million people 14 states including Tamilnadu.
• About ten million people are affected by cyclones in the entire 5700km long coastline of peninsular India in 9 states. This impact of earthquake is much more than the other disasters because about 400 million people in the seismic zones IV and V (55% of total area of India) are being greatly affected.
• About ten million people living along the entire sub Himalayan region and Western Ghats suffer a lot due to landslides. Since the disasters strike human settlements often in different parts of the world, they have to learn to minimize the effects of disasters.
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 disasters
A disaster is defined as a sudden event that severely disrupts a community's ability to function. Disasters can be caused by natural hazards like earthquakes, floods, hurricanes or drought. Natural disasters are classified as geophysical, hydrological, climatological, meteorological or biological based on their cause. Some key natural hazards covered are earthquakes, landslides, tsunamis, volcanic eruptions, avalanches, floods, extreme temperatures, drought, tropical storms and wildfires. Each hazard is described in terms of its causes, impacts and warning times. Mitigating and preparing for these various natural disasters poses challenges for emergency response.
Natural disasters-1226606059268844-9
This document discusses the top 11 natural disasters: landslides, floods, thunderstorms, tsunamis, volcanic eruptions, droughts, hurricanes, tornadoes, wildfires, earthquakes, and avalanches. It provides details on the causes and impacts of each type of disaster, with landslides defined as the movement of land down a slope by gravity, floods caused by excessive rainfall, and tsunamis generated by displacement of large bodies of water. The document aims to raise awareness of natural hazards and inform readers on disaster preparedness.
Natural disasters
The document defines and describes several natural disasters including earthquakes, tsunamis, hurricanes, tornadoes, floods, typhoons, avalanches, thunderstorms, and landslides. Earthquakes occur along fault lines when tectonic plates release stress, tsunamis are large waves caused by underwater disturbances, and hurricanes are tropical storms over 74 mph that typically occur in summer and autumn in the Atlantic.
geography earthquakes ppt
The document discusses earthquakes and tsunamis. It defines an earthquake as the shaking of the Earth caused by the sudden breaking and shifting of tectonic plates. Earthquakes occur when these plates in the Earth's surface break and shift, releasing energy through shockwaves. Undersea earthquakes can cause tsunamis by disturbing the ocean's surface. The document provides safety tips, advising people to take shelter under sturdy furniture during an earthquake and evacuate buildings afterwards. It also mentions the San Andreas Fault as an example of a slip fault where the rocks have moved horizontally, creating earthquakes.
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 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.
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The Disasters of World: Natural Disasters
The document summarizes several types of natural disasters including floods, tornadoes, hurricanes, volcanic eruptions, and earthquakes. For each type of disaster, it describes what they are, provides examples of types, and lists some of the deadliest events by death toll and location including the China floods of 1931 which killed between 2.5-3.7 million people.
Tsunamis presentation
An earthquake at the edge of a tectonic plate can displace large amounts of water and generate a tsunami. When the ocean floor suddenly rises or drops, it throws the water above it into large waves that travel towards the shore. Most tsunamis occur in the Pacific Ocean, called the "Ring of Fire", where there is frequent seismic and volcanic activity. The Japanese word "tsunami" means "harbor wave" and describes the huge waves that can overwhelm coastal areas, as seen in the devastating 2004 Indian Ocean tsunami that killed over 280,000 people.
Earthquake in Bangladesh
Geologically active faults within 50 to 500km distance from Dhaka. Dhaka is among the 20 major world cities that are the greatest risk from earthquakes. Some of these earthquakes especially the 1762, 1812, 1865, 1885 and 1897 happened in Dhaka. If 7-8 grade in Richter Scale earthquake happen in Dhaka 70-80 percent concrete structures would just collapse and 30,00,000 peoples will die.
Natural disasters
Natural disasters such as cyclones, earthquakes, tornadoes, volcanic eruptions, tsunamis, floods, landslides, droughts, waterspouts and wildfires are some of the most damaging hazards that can occur. Cyclones have strong rotating winds and develop over warm ocean waters, while earthquakes are caused by the sudden release of energy in the Earth's crust. Tornadoes are violently rotating columns of air that can reach wind speeds over 300 mph. Volcanic eruptions violently eject lava, ash and gases from volcanic vents. Tsunamis are large sea waves caused by underwater seismic events that can flood coastal areas.
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.
Natural disasters
This document defines and describes natural disasters including tsunamis. It states that a tsunami is a series of water waves caused by the displacement of a large volume of water, usually in an ocean. Tsunamis are most commonly caused by earthquakes, volcanic eruptions, underwater explosions, and meteorite impacts. While tsunamis have a long wavelength and period in deep water, making them difficult to detect, they can travel very quickly across oceans at over 600 mph, taking only a few hours to cross an entire ocean.
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.
DRRR – Other Geological Hazards
Hello! I've created this PowerPoint presentation as a requisite in Disaster Readiness and Risk Reduction subject during SY 2019–2020.
Other Geological Hazards
- Bolide Impact
- Ground Subsidence
- Coastal Erosion
Should you need a .pptx file, kindly email me at rd.chrxlr@gmail.com.
Natural disasters
The document discusses different types of natural disasters including tornadoes, hurricanes, earthquakes, volcanoes, floods, tsunamis, winter storms, and wildfires. It provides details on the causes and effects of each type of disaster. Tornadoes are rotating funnel-shaped clouds that can produce winds over 300 mph and cause major damage. Hurricanes are massive storms with winds over 75 mph that form in the tropics and produce heavy rain, winds, waves, and tornadoes. Earthquakes result from movements of tectonic plates and cause widespread shaking, especially along fault lines.
Natural disaster[1]
Ancient civilizations attributed natural disasters like earthquakes, floods, and volcanic eruptions to anger or actions of gods. They developed complex mythologies to explain events they did not understand from a scientific perspective. While views have evolved, some still see disasters as divine punishment. Natural disasters occur due to natural geological and environmental processes rather than supernatural intervention. Our world is governed by scientific laws and disasters result from a lack of preparedness for extreme natural events, not supernatural causes.
Causes, Effects and Precautions against Earthquake
1. Earthquakes are caused by the movement of tectonic plates deep below the Earth's surface. As the plates shift and grind against each other, they release energy in the form of seismic waves.
2. Major earthquakes can cause widespread damage to infrastructure like buildings, bridges and dams, resulting in loss of life and property. They can also trigger secondary hazards such as landslides, tsunamis and fires.
3. Pakistan is prone to earthquakes, with major fault lines running along its western border. Some of the deadliest quakes in the country's history include the 2005 Kashmir earthquake that killed over 80,000 people and the 2013 Balochistan earthquake that killed 825.
Natural disasters
Natural disasters such as earthquakes, volcanoes, tidal waves, and drought can destroy life and property. Earthquakes are measured by their magnitude on the Richter scale or Modified Mercalli scale, with higher magnitudes causing more damage. Volcanoes form when magma rises up through ruptures in the earth's crust. Tidal waves, also known as tsunamis, are actually not tidal but are instead caused by displacement of water. Droughts are periods of below average precipitation that result in shortages of atmospheric, surface, or ground water supply.
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.
Earthquake 1
The document provides information about natural disasters, specifically earthquakes and tropical cyclones. It defines earthquakes and tropical cyclones, describes their causes and effects, and lists measures to minimize damage. For example, it explains that earthquakes are caused by plate tectonic movement and can cause infrastructure damage, while tropical cyclones derive energy from warm ocean waters and can bring strong winds and flooding to coastal areas.
Disaster management
• Natural Calamities like cyclones, flood, earthquake, volcanoes and landslides are normal natural events in the formation of earth, but they are disastrous when they strike human settlements.
• In India, natural disasters occur frequently . For example, about 260 million people are being affected by frequent floods which occur in eight major river valleys in 40 million ha..
• Drought affects nearly 86 million people 14 states including Tamilnadu.
• About ten million people are affected by cyclones in the entire 5700km long coastline of peninsular India in 9 states. This impact of earthquake is much more than the other disasters because about 400 million people in the seismic zones IV and V (55% of total area of India) are being greatly affected.
• About ten million people living along the entire sub Himalayan region and Western Ghats suffer a lot due to landslides. Since the disasters strike human settlements often in different parts of the world, they have to learn to minimize the effects of disasters.
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 disasters
A disaster is defined as a sudden event that severely disrupts a community's ability to function. Disasters can be caused by natural hazards like earthquakes, floods, hurricanes or drought. Natural disasters are classified as geophysical, hydrological, climatological, meteorological or biological based on their cause. Some key natural hazards covered are earthquakes, landslides, tsunamis, volcanic eruptions, avalanches, floods, extreme temperatures, drought, tropical storms and wildfires. Each hazard is described in terms of its causes, impacts and warning times. Mitigating and preparing for these various natural disasters poses challenges for emergency response.
Natural disasters-1226606059268844-9
This document discusses the top 11 natural disasters: landslides, floods, thunderstorms, tsunamis, volcanic eruptions, droughts, hurricanes, tornadoes, wildfires, earthquakes, and avalanches. It provides details on the causes and impacts of each type of disaster, with landslides defined as the movement of land down a slope by gravity, floods caused by excessive rainfall, and tsunamis generated by displacement of large bodies of water. The document aims to raise awareness of natural hazards and inform readers on disaster preparedness.
Natural disasters
The document defines and describes several natural disasters including earthquakes, tsunamis, hurricanes, tornadoes, floods, typhoons, avalanches, thunderstorms, and landslides. Earthquakes occur along fault lines when tectonic plates release stress, tsunamis are large waves caused by underwater disturbances, and hurricanes are tropical storms over 74 mph that typically occur in summer and autumn in the Atlantic.
geography earthquakes ppt
The document discusses earthquakes and tsunamis. It defines an earthquake as the shaking of the Earth caused by the sudden breaking and shifting of tectonic plates. Earthquakes occur when these plates in the Earth's surface break and shift, releasing energy through shockwaves. Undersea earthquakes can cause tsunamis by disturbing the ocean's surface. The document provides safety tips, advising people to take shelter under sturdy furniture during an earthquake and evacuate buildings afterwards. It also mentions the San Andreas Fault as an example of a slip fault where the rocks have moved horizontally, creating earthquakes.
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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 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.
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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[1].ppt
The document provides information about tsunamis, including what causes them, how they behave in deep ocean versus shallow coastal waters, examples of destructive past tsunamis, and tips for preparing for tsunamis. It discusses how tsunamis are formed by earthquakes, landslides, volcanic eruptions and other events. It also explains that while tsunamis have long wavelengths and travel fast in deep ocean, they slow down and grow taller as they reach shallow coastal waters, potentially reaching over 100 feet high. Examples of destructive tsunamis discussed include those in Hawaii in 1975 and 1960, Alaska in 1964, Chile in 1960, and Peru in 1996.
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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.
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The document provides information about tsunamis, including what they are, how they are caused, common misconceptions, and details about some significant historical tsunamis. It also discusses recommendations for preparing for, responding to, and recovering from tsunamis based on guidance from organizations like the American Red Cross.
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.
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
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
The document provides information about tsunamis, including how they are formed by earthquakes, volcanic eruptions, or landslides under water. It discusses how tsunamis can affect people mentally, emotionally, and financially by destroying homes and infrastructure. The document outlines tsunami awareness steps before, during, and after a tsunami occurs, such as evacuating to higher ground if warned and helping others after the tsunami passes.
Tsunami
This document provides information about tsunamis through several examples of destructive tsunamis throughout history. It discusses what causes tsunamis, how they propagate and grow in shallow water, and their devastating effects on coastlines. Specific tsunamis summarized include the 1929 Grand Banks tsunami that killed 29 in Newfoundland, the 1946 Aleutian tsunami that caused over $165 million in damage and deaths in Hawaii, and the 1996 Peru tsunami that struck cities along 590 km of coastline.
taiwan independence
The document discusses evidence that mega-tsunamis from volcanic eruptions and flank collapses destroyed ancient civilizations over 50,000 years ago. Specifically, it notes that as the last glacial period ended around 12,000 years ago, stress imbalances triggered eruptions of stratovolcanoes located on shelves surrounding Asia. Landslides of these volcanoes would have generated mega-tsunamis over 100 meters high, capable of wiping out coastal settlements and islands across the northern hemisphere. The waters northeast of Taiwan in particular contain evidence of undersea volcanoes and faults that could have historically generated tsunamis impacting ancient civilizations.
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.
Tsunami
A tsunami is a series of large ocean waves caused by earthquakes, landslides, or volcanic eruptions under the sea. When these events displace large volumes of water rapidly, they generate tsunami waves that can travel vast distances across the ocean at speeds over 800 km/h. Though often small in deep water, tsunamis grow dramatically in height - up to 30 meters - as they reach shallow coastal waters, being able to destroy coastal villages and cities. The 2004 Indian Ocean tsunami was particularly devastating, killing over 150,000 people across 11 countries when earthquake forces built up over centuries were suddenly released on December 26th, unleashing killer waves across the Indian Ocean.
Tsunamis
This is information about tsunamis, and before and after photos of many islands. There is also stories of survivors in the slideshow as well! enjoy
Rapid Earth Changes
Natural disasters are changes to the Earth's surface that are so great they can damage land and threaten lives. They include volcanic eruptions, earthquakes, tsunamis, hurricanes, tornadoes, avalanches, floods, droughts, wildfires, dust storms, and sinkholes. The 2011 earthquake and tsunami in Japan killed over 20,000 people and caused $235 billion in damage, making it the costliest natural disaster in history. Volcanic eruptions and earthquakes can trigger tsunamis, which can have wave heights over 100 feet high.
Tsunami facts
A tsunami is a huge wave caused by pressure changes or seismic events under the ocean. Tsunamis can travel at over 500 mph and grow to over 100 feet tall, making them vastly more powerful than normal waves. The most devastating tsunami on record was the 2004 Indian Ocean tsunami, which killed over 283,000 people across 11 countries due to an earthquake with the energy of 23,000 atomic bombs. Signs of an impending tsunami include earthquakes and the sea rapidly pulling back from shore.
Types of natural disasters by Mr. .Allah Dad Khan Former Director General A...
The document provides an overview of different types of natural disasters including floods, earthquakes, droughts, volcanic eruptions, hurricanes, tornadoes, tsunamis, wildfires, and 1945 Pakistan tsunami. For each disaster type, the document discusses what causes the disaster and provides one or two examples of particularly severe events in history with details on damage and casualties. The goal of the document is to educate about various natural disasters and some of the worst cases that have significantly impacted human lives and property.
Quakes by Matthew Falzon, 3.05
Earthquakes are caused by the sudden movement of tectonic plates. Over time, strain builds up along plate boundaries until the accumulated energy is released, causing the plates to shift in an earthquake. While earthquakes can cause damage near fault lines, most of the energy released travels as seismic waves. In ancient times, earthquakes were attributed to gods like Neptune, who was thought to control both the sea and earth tremors. Underwater earthquakes, or seaquakes, can generate destructive tsunamis by displacing large volumes of water. Tsunamis are a series of enormous waves that travel very quickly but are relatively small in the open ocean.
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Manoj
- 2. • “TSUNAMI” is a Japanese word, which means “harbour wave”. • Tsunami is a series of large waves of extremely high wavelength and period which travells in all directions away from point of impact. • Tsunami is one of the most destructive natural disaster which cause loss of life and property on large extent. • Also after the water retreated, there was the elevated risk of disease created by contaminated water.
- 3. • First tsunami was recorded in 1480 B.C. in eastern Mediterranean,when the Minoan civilization was waped out. • A large tsunami accompanied by the earthquake of Lisbon in 1755. • 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.
- 4. • Hawaiian tsunami on 1 April 1946 destroyed the city of Hilo, killing 159 people. Other recent tsunami that have hit Hawaii are those of 1952,1957,1960,1964 and 1975 . • Total 65 destructive tsunamis struck Japan between 684 A.D to 1960. • On 16 August 1976, a large earthquake in the Moro Gulf in the Philippines generated a destructive local tsunami which killed over 8,000 persons. • Last one was Christmas tsunami in 2004.
- 5. Volcanic eruptionsVolcanic eruptions IcefallsIcefalls Heavy rainfallHeavy rainfall Seismic activitiesSeismic activities Submarine landslidesSubmarine landslides Cosmic impactsCosmic impacts
- 6. • Volcanic eruptions and icefalls create disturbance in water and generate tsunami. • Heavy rainfall cause overflow of water and generate tsunamis.
- 7. Seismic activity is most commonSeismic activity is most common for tsunamis.Both tectonic andfor tsunamis.Both tectonic and subduction earthquakes nearsubduction earthquakes near ocean create tsunamis.ocean create tsunamis. In tectonic earthquake, sea waterIn tectonic earthquake, sea water become deformed, forcingbecome deformed, forcing displacement of water.displacement of water. In subeducationIn subeducation earthquake,tectonic plates slipearthquake,tectonic plates slip under each other,create massiveunder each other,create massive disturbance and causedisturbance and cause displacement of water.displacement of water.
- 8. Submarine landslides caused bySubmarine landslides caused by earthquakes and implosion of underwaterearthquakes and implosion of underwater explosion.The falling sediment and rock inexplosion.The falling sediment and rock in these landslides can also trigger massivethese landslides can also trigger massive water movement,results in tsunamis.water movement,results in tsunamis.
- 9. These are the least frequent cause of tsunamis.This is similar to throwing rock into a pond,except on a large scale. When rock hit water it creates ripples of water moving away from point of impact,in case of cosmic impact,it craetes tsunamis.
- 10. CHRISTMAS TSUNAMI The deadliest tsunamis in recorded history was the Christmas tsunamis of 2004 in the Indian Ocean. On December 24, 2004, a massive 9.2 earthquake occurred which created a deadly series of tsunamis . The death toll was estimated to be in the neighborhood of 3,00,000 to 3,50,000. The Christmas tsunami was so powerful it actually sped up the rotation of the Earth reducing the length of its sidereal day. The earthquake that spawned it also caused the Earth to vibrate all over by as much as 1 cm.
- 11. • Loss of life and property can be reduced by proper planning. • Tsunami warnings can be made to aware peoples. • Stay away from all low lying coastal areas. • Never go down to the shore to watch tsunami. • Stay out of low lying danger areas until an “all-clear” is isued by competent authority.
- 12. THANK YOU