Natural hazards tsunami
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Tsunamis are caused by displacement of the seafloor from earthquakes, landslides, volcanic eruptions, and other geological events. They travel very fast in deep ocean waters but slow down and grow in size as they reach shallow coastal waters. This can result in massive waves that cause extensive damage through hydrostatic, hydrodynamic, and shock impacts when they arrive at shore. Monitoring systems and mitigation measures like warning systems, sea walls, and evacuation planning can help reduce risks from tsunamis.
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Tsunami
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. They have a devastating impact on both human life and the environment. India has established a tsunami early warning system called the Indian Tsunami Early Warning System to detect tsunamis and provide timely warnings. The 2004 Indian Ocean tsunami killed over 7,000 people in Tamil Nadu, India and highlighted the need for an early warning system. Now India can detect large undersea earthquakes and provide a tsunami warning within 10-20 minutes.
Tsunami warning system
This document summarizes a presentation about tsunami warning systems. It defines what a tsunami is, noting that it is a large wave created by undersea disturbances that can cause massive destruction. It then explains that the 2004 Indian Ocean tsunami that killed 80,000 could have been less devastating if an effective warning system had been in place. Such a system uses detectors on the seafloor to detect disturbances, sends data to buoys at the surface which transmit to satellites and then ground stations, allowing for warnings. It also briefly describes how tsunamis propagate and grow in size as they reach shallow coastal waters.
Tsunami
A tsunami is generated by a sudden rise or fall of the earth's crust under or near the ocean, most commonly caused by earthquakes. As the tsunami wave enters shallow coastal waters, its speed decreases and height increases, posing a threat to coastal areas. Countries like Japan have implemented extensive tsunami warning systems using deep ocean sensors and satellites to detect tsunamis early and issue warnings to allow for evacuation. The devastating 2004 Indian Ocean tsunami was triggered by a massive undersea earthquake and resulted in waves that took different arrival times to hit various coastlines, demonstrating the long distances tsunamis can travel.
Supritha ppt
A tsunami is a series of waves caused by the displacement of a large volume of water, usually in an ocean. Earthquakes, volcanic eruptions, landslides, explosions, meteorite impacts and other disturbances above or below water can generate a tsunami. Unlike wind-driven waves, a tsunami is caused by the displacement of water. Most tsunamis are generated by earthquakes occurring in subduction zones along plate boundaries. Tsunamis have extremely long wavelengths, over 100 km, and travel at high speeds of 400 to 500 mph. Their long wavelengths allow tsunamis to travel great distances with little loss of energy, making them still destructive even after traveling thousands of miles.
Tsunami (natural disaster)
This document discusses natural disasters and tsunamis. It defines a natural disaster as events caused by natural phenomena like earthquakes, floods, and tsunamis that result in significant loss of life and property damage. A tsunami is described as a series of waves generated by large displacements of water, usually caused by earthquakes, volcanic eruptions, landslides or other geological events. The largest tsunami in history is noted as the 1958 Lituya Bay megatsunami in Alaska, where an earthquake caused a landslide that generated a wave estimated to be 525 meters high. Safety measures for tsunami alerts include evacuating low-lying coastal areas and being aware of changing sea levels.
Tsunami
1) Tsunamis are large, destructive waves caused by underwater earthquakes, volcanic eruptions, landslides or other disturbances that displace large volumes of water.
2) While difficult to detect in deep ocean waters, tsunamis slow down and increase in height as they reach shallow coastal waters, where they can cause catastrophic damage by rapidly flooding low-lying areas.
3) International warning systems use seismic and ocean monitoring technologies to detect tsunamis and issue alerts, but coastal evacuations must be rapid as some tsunamis can reach shore in just minutes.
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
Created by Sarah Eturma from University of Southeastern Philippines taking Bachelor of Science in Secondary Education Major in Biological Science.
Recommended
Tsunami
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. They have a devastating impact on both human life and the environment. India has established a tsunami early warning system called the Indian Tsunami Early Warning System to detect tsunamis and provide timely warnings. The 2004 Indian Ocean tsunami killed over 7,000 people in Tamil Nadu, India and highlighted the need for an early warning system. Now India can detect large undersea earthquakes and provide a tsunami warning within 10-20 minutes.
Tsunami warning system
This document summarizes a presentation about tsunami warning systems. It defines what a tsunami is, noting that it is a large wave created by undersea disturbances that can cause massive destruction. It then explains that the 2004 Indian Ocean tsunami that killed 80,000 could have been less devastating if an effective warning system had been in place. Such a system uses detectors on the seafloor to detect disturbances, sends data to buoys at the surface which transmit to satellites and then ground stations, allowing for warnings. It also briefly describes how tsunamis propagate and grow in size as they reach shallow coastal waters.
Tsunami
A tsunami is generated by a sudden rise or fall of the earth's crust under or near the ocean, most commonly caused by earthquakes. As the tsunami wave enters shallow coastal waters, its speed decreases and height increases, posing a threat to coastal areas. Countries like Japan have implemented extensive tsunami warning systems using deep ocean sensors and satellites to detect tsunamis early and issue warnings to allow for evacuation. The devastating 2004 Indian Ocean tsunami was triggered by a massive undersea earthquake and resulted in waves that took different arrival times to hit various coastlines, demonstrating the long distances tsunamis can travel.
Supritha ppt
A tsunami is a series of waves caused by the displacement of a large volume of water, usually in an ocean. Earthquakes, volcanic eruptions, landslides, explosions, meteorite impacts and other disturbances above or below water can generate a tsunami. Unlike wind-driven waves, a tsunami is caused by the displacement of water. Most tsunamis are generated by earthquakes occurring in subduction zones along plate boundaries. Tsunamis have extremely long wavelengths, over 100 km, and travel at high speeds of 400 to 500 mph. Their long wavelengths allow tsunamis to travel great distances with little loss of energy, making them still destructive even after traveling thousands of miles.
Tsunami (natural disaster)
This document discusses natural disasters and tsunamis. It defines a natural disaster as events caused by natural phenomena like earthquakes, floods, and tsunamis that result in significant loss of life and property damage. A tsunami is described as a series of waves generated by large displacements of water, usually caused by earthquakes, volcanic eruptions, landslides or other geological events. The largest tsunami in history is noted as the 1958 Lituya Bay megatsunami in Alaska, where an earthquake caused a landslide that generated a wave estimated to be 525 meters high. Safety measures for tsunami alerts include evacuating low-lying coastal areas and being aware of changing sea levels.
Tsunami
1) Tsunamis are large, destructive waves caused by underwater earthquakes, volcanic eruptions, landslides or other disturbances that displace large volumes of water.
2) While difficult to detect in deep ocean waters, tsunamis slow down and increase in height as they reach shallow coastal waters, where they can cause catastrophic damage by rapidly flooding low-lying areas.
3) International warning systems use seismic and ocean monitoring technologies to detect tsunamis and issue alerts, but coastal evacuations must be rapid as some tsunamis can reach shore in just minutes.
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
Created by Sarah Eturma from University of Southeastern Philippines taking Bachelor of Science in Secondary Education Major in Biological Science.
Earthquake
The document discusses earthquakes and seismic waves. It explains that the focus is the location inside the earth where an earthquake starts, while the epicenter is the point directly above the focus on the surface. The amount of damage depends on the depth of the focus - shallow foci cause more damage since the energy doesn't have to travel as far. There are three main types of seismic waves - P waves, S waves, and L waves. P waves arrive first, followed by S waves, and then L waves, which travel along the surface. Seismographs are used to record seismic waves and determine the magnitude, duration, and location of earthquakes.
EARTHQUAKE
Earthquakes are caused by the movement of tectonic plates underground. There are three types of waves produced by earthquakes: P-waves, which move through solid material; S-waves, which move perpendicular to the direction of the wave; and surface waves, which travel along the Earth's surface. Earthquakes are measured using seismographs, which record the direction and timing of the different waves, and scales like the Richter scale and Mercalli scale, which measure the intensity and effects of the earthquake. Major historical earthquakes include ones in Shansi, China in 1556 that killed 83,000 people and in Kolkata in 1737 that killed 300,000 people.
SCIENCE PPT
Tsunamis are large ocean waves generated by earthquakes, landslides, or volcanic eruptions that displace large volumes of water. They form when the seafloor is displaced vertically, either up or down. As a tsunami travels from deep to shallow water, its speed decreases and height increases, transforming from a small wave to a potentially destructive wall of water. Modern warning systems use seismic data and tide gauges to detect tsunamis and issue watches and warnings to help coastal communities evacuate threatened areas in time. Examples of destructive historic tsunamis are presented from Indonesia, Japan, Alaska, and California. Simulations and animations help illustrate tsunami generation and propagation.
Cyclone
Cyclones are intense low pressure areas characterized by very strong circulating winds. They develop over warm tropical oceans and are classified as extra-tropical or tropical depending on location. Tropical cyclones bring heavy rainfall, strong winds over 100 km/h, and storm surges which can flood coastal areas. India's east coast is most vulnerable as the Bay of Bengal sees several cyclones each year. Early warning systems and evacuation plans are needed to minimize loss of life and property when cyclones make landfall. Proper construction and site selection above flood levels can strengthen buildings to withstand cyclone winds and rains.
Earthquake -presentation.( Earthquake, Soil Liquification, T- Sunaami, Fire, ...
Earthquake -presentation.( Earthquake, Soil Liquification, T- Sunaami, Fire, ...kabdultayash@gmail.com
Abdul Tayash presented a seminar on earthquakes for the 5th semester civil engineering students at Govt Polytechnic Harapanahalli. The seminar covered the introduction to earthquakes, types of earthquakes and seismic waves, and effects of earthquakes such as soil liquefaction, landslides, fires, tsunamis, and floods. Abdul concluded that earthquakes are a natural destructive force that occur along plate boundaries, and while we can predict where they will happen, not when. Engineers work to design earthquake-resilient structures and retrofit older buildings.NATURAL DISASTER TSUNAMI AND ITS RISK REDUCTION MEASURES
1. The document discusses natural hazards, specifically focusing on tsunamis - their causes, characteristics, warning systems, and potential risk reduction measures.
2. Tsunamis are caused by earthquakes, volcanic eruptions, and landslides under the sea. They differ from ordinary waves by traveling much faster in deep waters.
3. International and regional warning systems use seismic data to detect tsunamis and issue warnings to communities, with regional systems providing alerts within 15 minutes.
Tsunami transcr
Tsunamis are caused by earthquakes under the sea which displace large quantities of water and create waves that can travel at 500 miles per hour. While small in deep waters, the waves grow dramatically in height to over 10 stories as they reach shallow coastal areas due to friction with the ocean floor. Tsunamis strike as a wall of water that floods over land, pulling back out to sea and dragging debris, with multiple waves arriving over an hour after the initial impact. The deadliest tsunami on record was in 2004 when an earthquake in Indonesia triggered waves that killed over 200,000 people across the Indian Ocean. Scientists monitor earthquakes globally to detect potential tsunamis and warn coastal areas to evacuate to higher
all about tsunami
this is one of my projects that I had made for my class X holiday homework, I hope this can help you gain some information about tsunamis and if you also want to make a project like this, I hope I have helped you. - mansvini
Tsunami nature’s fury
Tsunamis are caused by large displacements of water, often due to underwater earthquakes, volcanic eruptions, landslides or explosions. While tsunamis have small amplitudes offshore, their wavelengths are very long. As they approach shore and water depths decrease, their speeds slow down while amplitudes grow tremendously, sometimes taking the form of a step-like wave. Drawbacks occur when the first part of a tsunami to reach land is a trough rather than a crest, causing a dramatic water recession that can expose normally submerged areas. Brief drawbacks can serve as warnings to immediately evacuate. While tsunamis cannot be precisely predicted, automated monitoring systems provide warnings after earthquakes to save lives.
Earthquake
This document discusses earthquakes and seismic activity. It defines key terms like earthquake, seismic waves, focus, and epicenter. Earthquakes are caused by disequilibrium in the earth from factors like plate tectonics and volcanic activity. They are classified as natural or artificial based on their cause. Natural earthquakes result from processes inside the earth, while artificial earthquakes are human-induced. Earthquakes most commonly occur along plate boundaries and zones of geological faulting or folding. When an earthquake occurs, it generates primary, secondary, and surface seismic waves that propagate outward from the focus/epicenter.
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.
Tsunami
Earthquakes, landslides, volcanic eruptions and other disturbances can cause tsunamis by displacing large amounts of water. Tsunamis are a series of long sea waves that can travel across entire oceans within hours. Three-quarters of tsunamis occur in the Pacific Ocean due to high seismic activity along subduction zones that make up the Pacific Ring of Fire. When tsunamis reach land, they can devastate coastal areas by destroying homes and infrastructure and endangering human life. On average, two tsunamis occur globally each year, with about 80% originating in the Pacific Ocean.
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
Tsunami
A tsunami is a series of water waves caused by the displacement of a large volume of water in an ocean. Tsunamis form when an earthquake vertically displaces the seabed by several meters, moving hundreds of cubic kilometers of water. As large waves move through the deep ocean away from the earthquake's epicenter, they travel at great speeds but slow down and increase in height when reaching shallow coastal waters.
Tsunamis by ramee teklemichael
A tsunami is a series of waves caused by the displacement of water, usually in an ocean, which is often triggered by earthquakes, volcanic eruptions, and other underwater explosions. Tsunamis have small wave heights offshore but grow taller as they reach shallow coastal waters, posing a threat to areas near the shore. Notable deadly tsunamis include the 2004 Indian Ocean tsunami that killed over 130,000 people and the 2011 Japan tsunami that caused over 9,500 deaths.
Presentation1
Tsunami waves are actually "wave trains" consisting of multiple waves rather than single waves. Tsunamis are generated when the seafloor abruptly deforms and vertically displaces the overlying water, such as during tectonic earthquakes where the seafloor is deformed beneath the sea. As the displaced water mass acts under gravity to regain equilibrium, waves are formed. Even though tsunamis are generated in deep water, they are considered shallow-water waves that can cause tremendous crests as the wavelength decreases rapidly in shallow coastal waters during shoaling.
Waves notes
This document discusses different types of waves, including their causes, characteristics, and behaviors. It defines key wave terminology like crest, trough, wavelength, and period. Wave size is determined by wind strength, duration, and fetch. Deep water waves travel in orbits while shallow water waves feel the bottom and change shape as they reach shore. Breakers come in spilling, plunging, and surging types. Longshore currents move sand along beaches, while rip currents pull water back out to sea. Tsunamis and rogue waves present unique wave hazards.
9th Grade Chapter 4 Lesson 2
Ocean currents and waves are influenced by several factors. Countercurrents flow in the opposite direction of surface currents to fill voids where surface water has moved. Waves are formed based on wind speed, duration, and the expanse of open water. Wave size and type is also affected by these conditions, creating choppy, white-capped, or swelling waves. Upon reaching shallow water, waves can break and create surf that moves up the beach. Currents like undertow and rip currents also influence nearshore ocean water movement and transport water back out to sea. Tides are predictable ocean currents caused by the moon's gravity, resulting in high and low tides depending on its positioning.
Culture and Disasters
Culture plays an important role in how people perceive and respond to disasters. Cultural filters shape how information about risks and emergencies are interpreted and decoded. Technology can both reduce and increase vulnerability, depending on how it is perceived and utilized within a cultural context. Understanding a community's culture, including values, beliefs, and risk perceptions, is essential for effective disaster risk reduction efforts.
Evaluating the Process of Learning from Environmental Disasters
1) The document discusses the processes of learning lessons from past environmental disasters and reducing future disaster risk.
2) It notes that lessons are sometimes registered and archived but then forgotten or ignored, maintaining vulnerability, while other times lessons are utilized and adopted, helping to reduce disaster risk.
3) A key challenge discussed is why lessons are often not learned from past events, due to issues like cost considerations, political expediency, and cultural rejection of disaster risk reduction efforts.
Natural hazards earthquakes
Earthquakes are caused by tectonic plate movement and volcanic activity. Seismology studies seismic waves, which are used to locate earthquakes. Different types of seismic waves travel at different speeds. Earthquake damage depends on magnitude, duration, distance from epicenter, and building construction. Hospitals are at high risk of collapse in earthquakes due to loss of infrastructure. Improving hospital seismic safety and emergency preparedness can reduce earthquake impacts.
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Earthquake
The document discusses earthquakes and seismic waves. It explains that the focus is the location inside the earth where an earthquake starts, while the epicenter is the point directly above the focus on the surface. The amount of damage depends on the depth of the focus - shallow foci cause more damage since the energy doesn't have to travel as far. There are three main types of seismic waves - P waves, S waves, and L waves. P waves arrive first, followed by S waves, and then L waves, which travel along the surface. Seismographs are used to record seismic waves and determine the magnitude, duration, and location of earthquakes.
EARTHQUAKE
Earthquakes are caused by the movement of tectonic plates underground. There are three types of waves produced by earthquakes: P-waves, which move through solid material; S-waves, which move perpendicular to the direction of the wave; and surface waves, which travel along the Earth's surface. Earthquakes are measured using seismographs, which record the direction and timing of the different waves, and scales like the Richter scale and Mercalli scale, which measure the intensity and effects of the earthquake. Major historical earthquakes include ones in Shansi, China in 1556 that killed 83,000 people and in Kolkata in 1737 that killed 300,000 people.
SCIENCE PPT
Tsunamis are large ocean waves generated by earthquakes, landslides, or volcanic eruptions that displace large volumes of water. They form when the seafloor is displaced vertically, either up or down. As a tsunami travels from deep to shallow water, its speed decreases and height increases, transforming from a small wave to a potentially destructive wall of water. Modern warning systems use seismic data and tide gauges to detect tsunamis and issue watches and warnings to help coastal communities evacuate threatened areas in time. Examples of destructive historic tsunamis are presented from Indonesia, Japan, Alaska, and California. Simulations and animations help illustrate tsunami generation and propagation.
Cyclone
Cyclones are intense low pressure areas characterized by very strong circulating winds. They develop over warm tropical oceans and are classified as extra-tropical or tropical depending on location. Tropical cyclones bring heavy rainfall, strong winds over 100 km/h, and storm surges which can flood coastal areas. India's east coast is most vulnerable as the Bay of Bengal sees several cyclones each year. Early warning systems and evacuation plans are needed to minimize loss of life and property when cyclones make landfall. Proper construction and site selection above flood levels can strengthen buildings to withstand cyclone winds and rains.
Earthquake -presentation.( Earthquake, Soil Liquification, T- Sunaami, Fire, ...
Earthquake -presentation.( Earthquake, Soil Liquification, T- Sunaami, Fire, ...kabdultayash@gmail.com
Abdul Tayash presented a seminar on earthquakes for the 5th semester civil engineering students at Govt Polytechnic Harapanahalli. The seminar covered the introduction to earthquakes, types of earthquakes and seismic waves, and effects of earthquakes such as soil liquefaction, landslides, fires, tsunamis, and floods. Abdul concluded that earthquakes are a natural destructive force that occur along plate boundaries, and while we can predict where they will happen, not when. Engineers work to design earthquake-resilient structures and retrofit older buildings.NATURAL DISASTER TSUNAMI AND ITS RISK REDUCTION MEASURES
1. The document discusses natural hazards, specifically focusing on tsunamis - their causes, characteristics, warning systems, and potential risk reduction measures.
2. Tsunamis are caused by earthquakes, volcanic eruptions, and landslides under the sea. They differ from ordinary waves by traveling much faster in deep waters.
3. International and regional warning systems use seismic data to detect tsunamis and issue warnings to communities, with regional systems providing alerts within 15 minutes.
Tsunami transcr
Tsunamis are caused by earthquakes under the sea which displace large quantities of water and create waves that can travel at 500 miles per hour. While small in deep waters, the waves grow dramatically in height to over 10 stories as they reach shallow coastal areas due to friction with the ocean floor. Tsunamis strike as a wall of water that floods over land, pulling back out to sea and dragging debris, with multiple waves arriving over an hour after the initial impact. The deadliest tsunami on record was in 2004 when an earthquake in Indonesia triggered waves that killed over 200,000 people across the Indian Ocean. Scientists monitor earthquakes globally to detect potential tsunamis and warn coastal areas to evacuate to higher
all about tsunami
this is one of my projects that I had made for my class X holiday homework, I hope this can help you gain some information about tsunamis and if you also want to make a project like this, I hope I have helped you. - mansvini
Tsunami nature’s fury
Tsunamis are caused by large displacements of water, often due to underwater earthquakes, volcanic eruptions, landslides or explosions. While tsunamis have small amplitudes offshore, their wavelengths are very long. As they approach shore and water depths decrease, their speeds slow down while amplitudes grow tremendously, sometimes taking the form of a step-like wave. Drawbacks occur when the first part of a tsunami to reach land is a trough rather than a crest, causing a dramatic water recession that can expose normally submerged areas. Brief drawbacks can serve as warnings to immediately evacuate. While tsunamis cannot be precisely predicted, automated monitoring systems provide warnings after earthquakes to save lives.
Earthquake
This document discusses earthquakes and seismic activity. It defines key terms like earthquake, seismic waves, focus, and epicenter. Earthquakes are caused by disequilibrium in the earth from factors like plate tectonics and volcanic activity. They are classified as natural or artificial based on their cause. Natural earthquakes result from processes inside the earth, while artificial earthquakes are human-induced. Earthquakes most commonly occur along plate boundaries and zones of geological faulting or folding. When an earthquake occurs, it generates primary, secondary, and surface seismic waves that propagate outward from the focus/epicenter.
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.
Tsunami
Earthquakes, landslides, volcanic eruptions and other disturbances can cause tsunamis by displacing large amounts of water. Tsunamis are a series of long sea waves that can travel across entire oceans within hours. Three-quarters of tsunamis occur in the Pacific Ocean due to high seismic activity along subduction zones that make up the Pacific Ring of Fire. When tsunamis reach land, they can devastate coastal areas by destroying homes and infrastructure and endangering human life. On average, two tsunamis occur globally each year, with about 80% originating in the Pacific Ocean.
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
Tsunami
A tsunami is a series of water waves caused by the displacement of a large volume of water in an ocean. Tsunamis form when an earthquake vertically displaces the seabed by several meters, moving hundreds of cubic kilometers of water. As large waves move through the deep ocean away from the earthquake's epicenter, they travel at great speeds but slow down and increase in height when reaching shallow coastal waters.
Tsunamis by ramee teklemichael
A tsunami is a series of waves caused by the displacement of water, usually in an ocean, which is often triggered by earthquakes, volcanic eruptions, and other underwater explosions. Tsunamis have small wave heights offshore but grow taller as they reach shallow coastal waters, posing a threat to areas near the shore. Notable deadly tsunamis include the 2004 Indian Ocean tsunami that killed over 130,000 people and the 2011 Japan tsunami that caused over 9,500 deaths.
Presentation1
Tsunami waves are actually "wave trains" consisting of multiple waves rather than single waves. Tsunamis are generated when the seafloor abruptly deforms and vertically displaces the overlying water, such as during tectonic earthquakes where the seafloor is deformed beneath the sea. As the displaced water mass acts under gravity to regain equilibrium, waves are formed. Even though tsunamis are generated in deep water, they are considered shallow-water waves that can cause tremendous crests as the wavelength decreases rapidly in shallow coastal waters during shoaling.
Waves notes
This document discusses different types of waves, including their causes, characteristics, and behaviors. It defines key wave terminology like crest, trough, wavelength, and period. Wave size is determined by wind strength, duration, and fetch. Deep water waves travel in orbits while shallow water waves feel the bottom and change shape as they reach shore. Breakers come in spilling, plunging, and surging types. Longshore currents move sand along beaches, while rip currents pull water back out to sea. Tsunamis and rogue waves present unique wave hazards.
9th Grade Chapter 4 Lesson 2
Ocean currents and waves are influenced by several factors. Countercurrents flow in the opposite direction of surface currents to fill voids where surface water has moved. Waves are formed based on wind speed, duration, and the expanse of open water. Wave size and type is also affected by these conditions, creating choppy, white-capped, or swelling waves. Upon reaching shallow water, waves can break and create surf that moves up the beach. Currents like undertow and rip currents also influence nearshore ocean water movement and transport water back out to sea. Tides are predictable ocean currents caused by the moon's gravity, resulting in high and low tides depending on its positioning.
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Earthquake -presentation.( Earthquake, Soil Liquification, T- Sunaami, Fire, ...
Earthquake -presentation.( Earthquake, Soil Liquification, T- Sunaami, Fire, ...
NATURAL DISASTER TSUNAMI AND ITS RISK REDUCTION MEASURES
NATURAL DISASTER TSUNAMI AND ITS RISK REDUCTION MEASURES
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Culture and Disasters
Culture plays an important role in how people perceive and respond to disasters. Cultural filters shape how information about risks and emergencies are interpreted and decoded. Technology can both reduce and increase vulnerability, depending on how it is perceived and utilized within a cultural context. Understanding a community's culture, including values, beliefs, and risk perceptions, is essential for effective disaster risk reduction efforts.
Evaluating the Process of Learning from Environmental Disasters
1) The document discusses the processes of learning lessons from past environmental disasters and reducing future disaster risk.
2) It notes that lessons are sometimes registered and archived but then forgotten or ignored, maintaining vulnerability, while other times lessons are utilized and adopted, helping to reduce disaster risk.
3) A key challenge discussed is why lessons are often not learned from past events, due to issues like cost considerations, political expediency, and cultural rejection of disaster risk reduction efforts.
Natural hazards earthquakes
Earthquakes are caused by tectonic plate movement and volcanic activity. Seismology studies seismic waves, which are used to locate earthquakes. Different types of seismic waves travel at different speeds. Earthquake damage depends on magnitude, duration, distance from epicenter, and building construction. Hospitals are at high risk of collapse in earthquakes due to loss of infrastructure. Improving hospital seismic safety and emergency preparedness can reduce earthquake impacts.
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Evaluating the Process of Learning from Environmental Disasters
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Similar to Natural hazards tsunami
project on Tsunami
This project report summarizes information about tsunamis. It defines a tsunami as a series of waves caused by the displacement of a large volume of water, generally in an ocean. Tsunamis are most commonly caused by earthquakes, but can also be triggered by volcanic eruptions, landslides, meteorite impacts, and nuclear explosions. The report describes different types of tsunamis based on their distance from the triggering event, and discusses tsunami warning systems, characteristics of tsunamis, historical tsunamis, and ways to prevent damage from tsunamis.
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.
Tsunami warning system
The document describes a tsunami warning system, explaining that tsunamis are large ocean waves usually caused by undersea earthquakes, volcanic eruptions, or landslides. The system uses seismometers to detect earthquakes, tide gauges to measure changes in sea level, and NOAA and DART stations that can detect tsunamis, allowing warnings to be issued to protect coastal areas from potential damage from an approaching tsunami.
Earthquake and earthquake resistant design
This document discusses earthquake-resistant design of structures. It begins with an overview of earthquakes, including their characterization, causes, waves, and effects. It then covers earthquake-resistant design principles, retrofitting existing structures, and analysis of structural response. Key points include:
- Earthquakes are caused by tectonic plate movements or other surface events like volcanic eruptions. They generate P, S, and L waves that damage structures.
- Structures should be designed to resist earthquake forces through seismic bands, interlocking walls, and other techniques. Retrofitting improves existing structures.
- Analysis considers single-degree-of-freedom and multi-degree-of-freedom structural models subjected
Tsunami Notes
Tsunamis are large destructive waves caused by geological events such as earthquakes, volcanoes, or landslides that displace large volumes of water. They are most commonly triggered by earthquakes of magnitude 7.0 or higher where the epicenter is located near or below the ocean. When the ocean floor is suddenly displaced by one of these events, it generates a series of long wavelength waves that propagate outward from the source. As these waves enter shallower coastal waters, their speed decreases and wavelength and height increase, sometimes resulting in a massive flooding wave that can cause devastating damage when it reaches land.
Tsunami
Tsunamis are large ocean waves generated by earthquakes, landslides, or volcanic eruptions. When the 2004 Indian Ocean earthquake occurred, it generated a devastating tsunami that killed over 160,000 people across several Asian and African countries. The disaster could have been mitigated if an early warning system had been in place for the Indian Ocean similar to the one that exists in the Pacific. International efforts are now underway to develop an early warning system for the Indian Ocean and other regions to help prevent future loss of life from tsunamis.
Feature article inter sci waves
According to a report by the Pacific Institute, sea level rise of 1-1.4 meters by 2100 could cause $100 billion in property damage along California's coast, flooding areas where over 450,000 people live. Waves play a major role in coastal erosion, which is exacerbated by sea level rise and threatens over 30 million Californians. Oceanographer Tim Janssen studies wave modeling to better understand wave behavior and its effects on coastal erosion, though predictions are challenging given the complex physics involved. Improving such predictions will help inform policies around protecting California's coastlines from damage and flooding due to sea level rise and erosion.
Physics of tsunami
The document discusses the physics behind tsunamis, beginning with the causes of earthquakes. It describes plate tectonics and how the movement of tectonic plates can cause earthquakes. It then explains how earthquakes at sea can generate tsunamis by rapidly displacing large amounts of water. The document outlines how tsunami waves travel long distances at high speeds with little loss of energy. Finally, it discusses the impacts of the 2004 Indian Ocean tsunami, including physical changes to coastlines and islands as well as human impacts.
GEOHAZARDS07 - Tsunami.pdf
This document summarizes information about tsunamis from multiple sources. It discusses how the 2004 Sumatra earthquake generated a tsunami that killed over 280,000 people due to the lack of an early warning system in the Indian Ocean. It then provides definitions and characteristics of tsunamis, explaining how their long wavelengths allow them to travel vast distances with little energy loss. As they reach shallow coastal waters, their speed decreases while height increases due to shoaling. Tsunamis can be generated by earthquakes, volcanic eruptions, landslides, explosions, and meteorite impacts, with most caused by displacement of the seafloor during subduction zone earthquakes. Examples of deadly tsunamis from Alaska and
Tsunami.ppt
This document discusses tsunamis, including what causes them, how they travel, and their impacts. Some key points:
- Tsunamis are seismic sea waves caused by earthquakes, volcanic eruptions, landslides, or meteor impacts that displace large volumes of water.
- They can travel at high speeds of 400-500 mph in deep ocean water but slow down and grow taller in shallower coastal areas, causing flooding and damage on land.
- Their long wavelengths mean they lose little energy even over long distances, allowing tsunamis generated in one area to impact landmasses many hours or days away.
- Tsunami warning centers monitor seismic activity and tide gaug
tsunami
This document discusses tsunamis, including what causes them, how they travel, and their impacts. Some key points:
- Tsunamis are seismic sea waves caused by earthquakes, volcanic eruptions, landslides, or meteor impacts that displace large volumes of water.
- They can travel at high speeds of 400-500 mph in deep ocean water but slow down and grow taller in shallower coastal areas, causing flooding and damage on land.
- Their long wavelengths mean they lose little energy even over long distances, allowing tsunamis generated in one area to impact landmasses many hours or days away.
- Tsunami warning centers monitor seismic activity and tide gaug
Tsunami
A tsunami is a large sea wave generated by earthquakes, landslides, or volcanic eruptions that displace large volumes of water. When this activity displaces the sea floor, it generates waves that can travel across oceans at high speeds. Though imperceptible in deep waters, tsunamis grow in height and power as they reach shallower coastal waters, posing a threat to coastal regions. Monitoring systems use sensors and satellites to detect tsunamis and issue warnings to protect coastal communities.
Tsunami
long-wavelength wave of water that is generated by sudden displacement of the seafloor or disruption of any body of standing wat
Tsunami
This is a PowerPoint Presentation based strictly on Tsunami.
Here one can find the following details about Tsunami:
Definition of Tsunami
Major Causes of Tsunami
Pictures Related to Tsunami
Analytical and Statistical information
And other more useful details .
So Hope you like it
Thankyou
Tsunami
Tsunamis are a series of huge waves caused by undersea disturbances like earthquakes or volcanic eruptions. They are generated by the sudden displacement of water and can cause devastating damage when they reach land. The 2004 Indian Ocean tsunami was triggered by a massive 9.0 magnitude earthquake off the coast of Sumatra, Indonesia. It affected over 12 countries across South and Southeast Asia, causing over 160,000 deaths and widespread destruction of property. The tsunami highlighted the massive scale of relief efforts needed in the aftermath of such a disaster.
Tsunami risk reduction strategies
The Science Applications for Risk Reduction Tsunami Scenario. Perspectives on what can be done to become tsuanmi disaster resilient. Presentation courtesy of Dr Walter Hays, Global Alliance for Disaster Reduction
tsunami warning system (synofsis)
The document discusses tsunami warning systems. It provides details on:
1) How tsunami warning systems detect tsunamis using networks of seismic stations, sea level monitoring stations like tide gauges and DART buoys, and issue warnings.
2) The two main types of warning systems - international systems that cover ocean basins and national systems that provide very quick, localized warnings.
3) How seismic data, tide gauge data and DART buoy data are used to detect tsunamis, characterize earthquake sources, monitor tsunami progress, and issue or cancel warnings.
Earthquake hazards
The document summarizes key aspects of tsunamis:
- As a tsunami wave enters shallow water, the bottom of the wave drags along the ocean floor while the top still moves fast, causing the wave to crest and break on shore.
- Tsunami run-up is measured by how high above sea level the water reaches inland. Multiple waves typically arrive about half an hour apart, not just one large wave.
- Tsunamis can cause damage by carrying debris inland that drags more material back out to sea when the water recedes, sometimes over a kilometer from shore.
Iotsunami
This document summarizes concepts related to the 2004 Indian Ocean earthquake and tsunami. It describes how earth's plates move and interact at boundaries, generating earthquakes and tsunamis. It discusses how the India plate is moving north and colliding with Eurasia, causing earthquakes along the Sumatra subduction zone. The 2004 quake had a magnitude of 9.3, rupturing 1200 km of the fault and generating a massive tsunami that caused widespread damage across the Indian Ocean.
Tsunami
The document discusses tsunamis, including their causes, characteristics, and damage potential. Tsunamis are caused by underwater events that displace large volumes of water, such as earthquakes, landslides, volcanic eruptions, and asteroid impacts. They have long wavelengths, travel at high speeds in deep water, and slow down and grow taller as they reach shallow coastal areas. Notable tsunamis include the 2004 Sumatra event that killed over 200,000 people and the devastating 2011 Tohoku tsunami in Japan triggered by a 9.0 magnitude earthquake.
Similar to Natural hazards tsunami (20)
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Natural hazards tsunami
- 1. Tsunami Prof. David Alexander Global Risk Forum Davos
- 2. Tsunami - seismic sea waves tsu'nami - "port waves"
- 8. epicentre under the sea or on coast
- 11. movement in deep water
- 12. movement in shallow water
- 15. speed: that of a criusing Boeing 747
- 16. therefore, in the open ocean tsunamistravel rapidly and are invisible.
- 19. the waves become small at greatdistances from the point of generation.
- 21. Simulation of a tsunami generated in Prince William Sound, Alaska: situation after 1/2, 1, 2 and 4 hours of travel (vertical exaggeration: x 3 million)
- 25. the refraction of the waves in shallowwater: speed reduced, wave height increased (up to 40 metres).
- 26. Refraction of tsunami waves around the island of Hawaii Altezza delle onde alla costa
- 27. 2000: small tsunami of volcanic origin on island of Stromboli
- 28. The magnitude of the tsunami is calculated with this formula:- M = 3,32 log H or M = log2H whereHis the amplitude of the largest wave
- 29. Seiches: regular long-period oscillations of a large, enclosed body of water (lakes, bays, straits, lagoons, etc.)
- 32. Hydrostatic, hydrodynamic and shock effects on Hawaii Island
- 33. Tsunami damage at Seward, Alaska, 1964
- 34. Tipical damage to coastal buildings, Indonesia, 1994
- 36. up to 5 metres wave height
- 37. Mindanao Island particularly vulnerable
- 39. Banda Aceh, Indonesia, before and after
- 40. Baia di Khao Lak, Thailand, before and after
- 41. the increment in mortality diminishes with increasing tsunami magnitude Mean annual potential mortality Nonlinear relationships between tsunami magnitude, or return period, and mean annual mortality. Max, wave height (m) Annual mortality Recurrence interval (years)
- 44. Travel times in the Pacific basin for a tsunami generated in the Hawaiian Islands
- 49. physical defences on coasts (sea walls)
- 51. Kowloon Tong, Hong Kong: barriers against tsunamis and storm surges caused by typhoons
- 52. Public tsunami evacuation map in Padang western Sumatra, Indonesia
- 55. Maps by Stefano Tinti (Univ. of Bologna) of the tsunami risk on Italian coastlines.