# data[].attributes.body
A tsunami’s trough, the low point beneath the wave’s crest, often reaches shore first. When it does, it produces a vacuum effect that sucks coastal water seaward and exposes harbor and sea floors. This retreating of sea water is an important warning sign of a tsunami, because the wave’s crest and its enormous volume of water typically hit shore five minutes or so later. Recognizing this phenomenon can save lives.

by:royven

# data[].attributes.body
A tsunami is a series of ocean waves caused by an underwater earthquake, landslide, or volcanic eruption. More rarely, a tsunami can be generated by a giant meteor impact with the ocean. These waves can reach heights of over 100 ft.

by:royven

# data[].attributes.body
A tsunami’s trough, the low point beneath the wave’s crest, often reaches shore first. When it does, it produces a vacuum effect that sucks coastal water seaward and exposes harbor and sea floors. This retreating of sea water is an important warning sign of a tsunami, because the wave’s crest and its enormous volume of water typically hit shore five minutes or so later. Recognizing this phenomenon can save lives.

by:royven

# data[].attributes.body
The best defense against any tsunami is early warning that allows people to seek higher ground. The Pacific Tsunami Warning System, a coalition of 26 nations headquartered in Hawaii, maintains a web of seismic equipment and water level gauges to identify tsunamis at sea. Similar systems are proposed to protect coastal areas worldwide.

by:royven

# data[].attributes.body
A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet (30.5 meters), onto land. These walls of water can cause widespread destruction when they crash ashore.

by:royven

# data[].attributes.body
There have been studies and at least one attempt to create tsunami waves as a weapon. In World War II, the New Zealand Military Forces initiated Project Seal, which attempted to create small tsunamis with explosives in the area of today's Shakespear Regional Park; the attempt failed.[46]

# data[].attributes.body
There have been studies and at least one attempt to create tsunami waves as a weapon. In World War II, the New Zealand Military Forces initiated Project Seal, which attempted to create small tsunamis with explosives in the area of today's Shakespear Regional Park; the attempt failed.[46]

From: Maegan

# data[].attributes.body
However, their effectiveness has been questioned, as tsunami often overtop the barriers. The 2011 Fukushima nuclear disaster was directly triggered by a tsunami that exceeded the height of the plant's sea wall.[43] The Okushiri, Hokkaidō tsunami which struck Okushiri Island ofHokkaidō within two to five minutes of the earthquake on July 12, 1993 created waves as much as 30 metres (100 ft) tall—as high as a 10-story building. The port town of Aonae was completely surrounded by a tsunami wall, but the waves washed right over the wall and destroyed all the wood-framed structures in the area. The wall may have succeeded in slowing down and moderating the height of the tsunami, but it did not prevent major destruction and loss of life.[44] Iwate Prefecture, which is an area at high risk from tsunami, had tsunami barriers walls totalling 25 kilometres (16 mi) long at coastal towns. The 2011 tsunami toppled more than 50% of the walls and caused many damages.[45]

From: Maegan

# data[].attributes.body
Japan, where tsunami science and response measures first began following a disaster in 1896, has produced ever-more elaborate countermeasures and response plans.[42] That country has built many tsunami walls of up to 12 metres (39 ft) high to protect populated coastal areas. Other localities have built floodgates of up to 15.5 metres (51 ft) high and channels to redirect the water from incoming tsunami.
From: Maegan

# data[].attributes.body
Japan, where tsunami science and response measures first began following a disaster in 1896, has produced ever-more elaborate countermeasures and response plans.[42] That country has built many tsunami walls of up to 12 metres (39 ft) high to protect populated coastal areas. Other localities have built floodgates of up to 15.5 metres (51 ft) high and channels to redirect the water from incoming tsunami.

# data[].attributes.body
In some tsunami-prone countries earthquake engineering measures have been taken to reduce the damage caused onshore.

From: Maegan

# data[].attributes.body
Kunihiko Shimazaki (University of Tokyo), a member of Earthquake Research committee of The Headquarters for Earthquake Research Promotion of Japanese government, mentioned the plan to public announcement of tsunami attack probability forecast at Japan National Press Club on 12 May 2011. The forecast includes tsunami height, attack area and occurrence probability within 100 years ahead. The forecast would integrate the scientific knowledge of recent interdisciplinarity and aftermath of the 2011 Tōhoku earthquake and tsunami. As the plan, announcement will be available from 2014.[39][40][41]

From: Maegan

# data[].attributes.body
Along the United States west coast, in addition to sirens, warnings are sent on television and radio via the National Weather Service, using theEmergency Alert System.

From:Maegan

# data[].attributes.body
Along the United States west coast, in addition to sirens, warnings are sent on television and radio via the National Weather Service, using theEmergency Alert System.

# data[].attributes.body
Some zoologists hypothesise that some animal species have an ability to sense subsonic Rayleigh waves from an earthquake or a tsunami. If correct, monitoring their behavior could provide advance warning of earthquakes, tsunami etc. However, the evidence is controversial and is not widely accepted. There are unsubstantiated claims about the Lisbon quake that some animals escaped to higher ground, while many other animals in the same areas drowned. The phenomenon was also noted by media sources in Sri Lanka in the 2004 Indian Ocean earthquake.[37][38]It is possible that certain animals (e.g., elephants) may have heard the sounds of the tsunami as it approached the coast. The elephants' reaction was to move away from the approaching noise. By contrast, some humans went to the shore to investigate and many drowned as a result.

From: Maegan

# data[].attributes.body
Computer models can predict tsunami arrival, usually within minutes of the arrival time.Based on these pressure readings and other seismic information and the seafloor's shape (bathymetry) and coastal topography, the models estimate the amplitude and surge height of the approaching tsunami. All Pacific Rim countries collaborate in the Tsunami Warning System and most regularly practice evacuation and other procedures. In Japan, such preparation is mandatory for government, local authorities, emergency services and the population.

From: Maegan

# data[].attributes.body
As a direct result of the Indian Ocean tsunami, a re-appraisal of the tsunami threat for all coastal areas is being undertaken by national governments and the United Nations Disaster Mitigation Committee. A tsunami warning system is being installed in the Indian Ocean.

From: Maegan

# data[].attributes.body
The Pacific Tsunami Warning System is based in Honolulu, Hawaiʻi. It monitors Pacific Ocean seismic activity. A sufficiently large earthquake magnitude and other information triggers a tsunami warning. While the subduction zones around the Pacific are seismically active, not all earthquakes generate tsunami. Computers assist in analysing the tsunami risk of every earthquake that occurs in the Pacific Ocean and the adjoining land masses.

From: Maegan

# data[].attributes.body
Regions with a high tsunami risk typically use tsunami warning systems to warn the population before the wave reaches land. On the west coast of the United States, which is prone to Pacific Ocean tsunami, warning signs indicate evacuation routes. In Japan, the community is well-educated about earthquakes and tsunamis, and along the Japanese shorelines the tsunami warning signs are reminders of the natural hazards together with a network of warning sirens, typically at the top of the cliff of surroundings hills.[36]

From: Maegan

# data[].attributes.body
A tsunami cannot be precisely predicted, even if the magnitude and location of an earthquake is known. Geologists, oceanographers, andseismologists analyse each earthquake and based on many factors may or may not issue a tsunami warning. However, there are some warning signs of an impending tsunami, and automated systems can provide warnings immediately after an earthquake in time to save lives. One of the most successful systems uses bottom pressure sensors, attached to buoys, which constantly monitor the pressure of the overlying water column.
From: Maegan

# data[].attributes.body
In the 2004 Indian Ocean tsunami drawback was not reported on the African coast or any other east-facing coasts that it reached. This was because the wave moved downwards on the eastern side of the fault line and upwards on the western side. The western pulse hit coastal Africa and other western areas.

From: Maegan

# data[].attributes.body
Drawbacks can serve as a brief warning. People who observe drawback (many survivors report an accompanying sucking sound), can survive only if they immediately run for high ground or seek the upper floors of nearby buildings. In 2004, ten-year old Tilly Smith ofSurrey, England, was on Maikhao beach in Phuket, Thailand with her parents and sister, and having learned about tsunamis recently in school, told her family that a tsunami might be imminent. Her parents warned others minutes before the wave arrived, saving dozens of lives. She credited her geography teacher, Andrew Kearney.

From: Maegan

# data[].attributes.body
A typical wave period for a damaging tsunami is about 12 minutes. This means that if the drawback phase is the first part of the wave to arrive, the sea will recede, with areas well below sea level exposed after 3 minutes. During the next 6 minutes the tsunami wave trough builds into a ridge, and during this time the sea is filled in and destruction occurs on land. During the next 6 minutes, the tsunami wave changes from a ridge to a trough, causing flood waters to drain and drawback to occur again. This may sweep victims and debris some distance from land. The process repeats as the next wave arrives.

From: Maegan

# data[].attributes.body
All waves have a positive and negative peak, i.e. a ridge and a trough. In the case of a propagating wave like a tsunami, either may be the first to arrive. If the first part to arrive at shore is the ridge, a massive breaking wave or sudden flooding will be the first effect noticed on land. However if the first part to arrive is a trough, a drawback will occur as the shoreline recedes dramatically, exposing normally submerged areas. Drawback can exceed hundreds of metres, and people unaware of the danger sometimes remain near the shore to satisfy their curiosity or to collect fish from the exposed seabed.

From: Maegan

# data[].attributes.body
About 80% of tsunamis occur in the Pacific Ocean, but they are possible wherever there are large bodies of water, including lakes. They are caused by earthquakes, landslides, volcanic explosions, glacier calvings, and bolides.

From: Maegan

# data[].attributes.body
When the tsunami's wave peak reaches the shore, the resulting temporary rise in sea level is termed run up. Run up is measured in metres above a reference sea level.[31] A large tsunami may feature multiple waves arriving over a period of hours, with significant time between the wave crests. The first wave to reach the shore may not have the highest run up.[32]

From: Maegan

# data[].attributes.body
As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its speed decreases below 80 kilometres per hour (50 mph). Its wavelength diminishes to less than 20 kilometres (12 mi) and its amplitude grows enormously. Since the wave still has the same very long period, the tsunami may take minutes to reach full height. Except for the very largest tsunamis, the approaching wave does not break, but rather appears like a fast-moving tidal bore.[31] Open bays and coastlines adjacent to very deep water may shape the tsunami further into a step-like wave with a steep-breaking front.

From: Maegan

# data[].attributes.body
The reason for the Japanese name "harbour wave" is that sometimes a village's fishermen would sail out, and encounter no unusual waves while out at sea fishing, and come back to land to find their village devastated by a huge wave.
From: Maegan

# data[].attributes.body
While everyday wind waves have a wavelength (from crest to crest) of about 100 metres (330 ft) and a height of roughly 2 metres (6.6 ft), a tsunami in the deep ocean has a much larger wavelength of up to 200 kilometres (120 mi). Such a wave travels at well over 800 kilometres per hour (500 mph), but owing to the enormous wavelength the wave oscillation at any given point takes 20 or 30 minutes to complete a cycle and has an amplitude of only about 1 metre (3.3 ft).[30] This makes tsunamis difficult to detect over deep water, where ships are unable to feel their passage.

From: Maegan

# data[].attributes.body
Tsunamis cause damage by two mechanisms: the smashing force of a wall of water travelling at high speed, and the destructive power of a large volume of water draining off the land and carrying a large amount of debris with it, even with waves that do not appear to be large.

# data[].attributes.body
In the case of deep tropical cyclones, this is due to very low atmospheric pressure and inward swirling winds causing an uplifted dome of water to form under and travel in tandem with the storm. When these water domes reach shore, they rear up in shallows and surge laterally like earthquake-generated tsunamis, typically arriving shortly after landfall of the storm's eye.[28][29]
From: Maegan

# data[].attributes.body
Some meteorological conditions, especially deep depressions such as tropical cyclones, can generate a type of storm surge called ameteotsunami which raises water heights above normal levels, often suddenly at the shoreline.[27]
From: Maegan

# data[].attributes.body
Scientists discovered that extremely large landslides from volcanic island collapses can generate megatsunamis that can cross oceans.
From: Maegan

# data[].attributes.body
Another landslide-tsunami event occurred in 1963 when a massive landslide from Monte Toc went into the Vajont Dam in Italy. The resulting wave overtopped the 262 m (860 ft) high dam by 250 metres (820 ft) and destroyed several towns. Around 2,000 people died.[25][26] Scientists named these waves megatsunami.
Devastation wrought by Hurricane Ike's meteotsunamic storm surge over the Bolivar Peninsula in 2008.
From: Maegan

# data[].attributes.body
In the 1950s, it was discovered that larger tsunamis than had previously been believed possible could be caused by giant submarine landslides. These rapidly displace large water volumes, as energy transfers to the water at a rate faster than the water can absorb. Their existence was confirmed in 1958, when a giant landslide in Lituya Bay, Alaska, caused the highest wave ever recorded, which had a height of 524 metres (over 1700 feet).[24] The wave didn't travel far, as it struck land almost immediately. Two people fishing in the bay were killed, but another boat amazingly managed to ride the wave.

From: Maegan

# data[].attributes.body
The 1960 Valdivia earthquake (M w 9.5) (19:11 hrs UTC), 1964 Alaska earthquake (M w 9.2), 2004 Indian Ocean earthquake (M w 9.2) (00:58:53 UTC) and 2011 Tōhoku earthquake (M w9.0) are recent examples of powerful megathrust earthquakes that generated tsunamis (known as teletsunamis) that can cross entire oceans. Smaller (M w 4.2) earthquakes in Japan can trigger tsunamis (called local and regional tsunamis) that can only devastate nearby coasts, but can do so in only a few minutes.
From: Maegan

# data[].attributes.body
The cause of the Storegga sediment failure is unknown. Possibilities include an overloading of the sediments, an earthquake or a release of gas hydrates (methane etc.).

From: Maegan

# data[].attributes.body
Examples of tsunami originating at locations away from convergent boundaries include Storegga about 8,000 years ago, Grand Banks 1929, Papua New Guinea 1998 (Tappin, 2001). The Grand Banks and Papua New Guinea tsunamis came from earthquakes which destabilised sediments, causing them to flow into the ocean and generate a tsunami. They dissipated before traveling transoceanic distances.

From: Maegan

# data[].attributes.body
On April 1, 1946, a magnitude-7.8 (Richter Scale) earthquake occurred near the Aleutian Islands, Alaska. It generated a tsunami which inundated Hilo on the island of Hawai'i with a 14-metre high (46 ft) surge. The area where the earthquake occurred is where the Pacific Ocean floor is subducting (or being pushed downwards) under Alaska.

From: Maegan

# data[].attributes.body
Tsunamis have a small amplitude (wave height) offshore, and a very long wavelength (often hundreds of kilometres long, whereas normal ocean waves have a wavelength of only 30 or 40 metres),[23] which is why they generally pass unnoticed at sea, forming only a slight swell usually about 300 millimetres (12 in) above the normal sea surface. They grow in height when they reach shallower water, in a wave shoaling process described below. A tsunami can occur in any tidal state and even at low tide can still inundate coastal areas.

From: Maegan

# data[].attributes.body
The principal generation mechanism (or cause) of a tsunami is the displacement of a substantial volume of water or perturbation of the sea.[19] This displacement of water is usually attributed to either earthquakes, landslides, volcanic eruptions, glacier calvings or more rarely by meteorites and nuclear tests.[20][21] The waves formed in this way are then sustained by gravity. Tides do not play any part in the generation of tsunamis.
From: Maegan

# data[].attributes.body
There are only a few other languages that have an equivalent native word. In Acehnese language, the words are ië beuna[11] or alôn buluëk[12] (depending on the dialect). In Tamil language, it is aazhi peralai. On Simeulue island, off the western coast of Sumatra inIndonesia, in Devayan language the word is smong, while in Sigulai language it is emong.[13] In Singkil (in Aceh province) and surrounding, the people name tsunami with word gloro.[14]

From: Maegan

# data[].attributes.body
Tsunami are sometimes referred to as tidal waves, which are unusually high sea waves that are triggered especially by earthquakes.[8] In recent years, this term has fallen out of favor, especially in the scientific community, because tsunami actually have nothing to do withtides. The once-popular term derives from their most common appearance, which is that of an extraordinarily high tidal bore. Tsunami and tides both produce waves of water that move inland, but in the case of tsunami the inland movement of water is much greater and lasts for a longer period, giving the impression of an incredibly high tide. Although the meanings of "tidal" include "resembling"[9] or "having the form or character of"[10] the tides, and the term tsunami is no more accurate because tsunami are not limited to harbours, use of the termtidal wave is discouraged by geologists and oceanographers.

From: Maegan

# data[].attributes.body
The term tsunami comes from the Japanese 津波, composed of the two kanji津 (tsu) meaning "harbour" and 波 (nami), meaning "wave". (For the plural, one can either follow ordinary English practice and add an s, or use an invariable plural as in the Japanese.[7])

From: Maegan

# data[].attributes.body
The 1960 Valdivia earthquake (M w 9.5) (19:11 hrs UTC), 1964 Alaska earthquake (M w 9.2), 2004 Indian Ocean earthquake (M w 9.2) (00:58:53 UTC) and 2011 Tōhoku earthquake (M w9.0) are recent examples of powerful megathrust earthquakes that generated tsunamis (known as teletsunamis) that can cross entire oceans. Smaller (M w 4.2) earthquakes in Japan can trigger tsunamis (called local and regional tsunamis) that can only devastate nearby coasts, but can do so in only a few minutes.

From:Maegan

# data[].attributes.body
The cause of the Storegga sediment failure is unknown. Possibilities include an overloading of the sediments, an earthquake or a release of gas hydrates (methane etc.).

From: Maegan

# data[].attributes.body
What causes tsunami?

# data[].attributes.body
ship sinking after getting hit by tsunami from rane

# data[].attributes.body
Tsunami waves do not resemble normal sea waves

by kirk

# data[].attributes.headline
A tsunami is a series of huge waves that can cause great devastation and loss of life when they strike a coast. 

# data[].attributes.subject
A tsunami is a series of huge waves that can cause great devastation and loss of life when they strike a coast. 

# data[].attributes.body
By:Kayne Low

# data[].attributes.body
Tsunamis generally consist of a series of waves with periods ranging from minutes to hours, arriving in a so-called "wave train"

Ying Jie

# data[].attributes.body
This is a picture of a tsunami.

From Ru Xuan

# data[].attributes.body
Examples of tsunami originating at locations away from convergent boundaries include Storegga about 8,000 years ago, Grand Banks 1929, Papua New Guinea 1998 (Tappin, 2001). The Grand Banks and Papua New Guinea tsunamis came from earthquakes which destabilised sediments, causing them to flow into the ocean and generate a tsunami. They dissipated before traveling transoceanic distances.

From: Maegan

# data[].attributes.body
T

energy use in the United States at 2005 levels of 1.08×10²⁰ J.
lucas yong

# data[].attributes.body
We've all seen the destruction that tsunamis can cause. It doesn't play around. But back in 1944, the US military wanted to play around with tsunamis in hope of creating a man made tsunami bomb—basically setting off 10 large blasts in the ocean to create a 33-foot tsunami that would pulverize and drown a city.

by jerryl

# data[].attributes.headline
Flooding caused by tsunami on the mainland can be more than a thousand feet. - 

# data[].attributes.subject
Flooding caused by tsunami on the mainland can be more than a thousand feet. - 

# data[].attributes.body
BY:EMILY

# data[].attributes.body
www.youtube.com/watch?v=1J8Feyr38Ss

# data[].attributes.body
The 2004 Indian Ocean earthquake came just three days after a magnitude 8.1 earthquake in an uninhabited region west of New Zealand's subantarctic Auckland Islands, and north of Australia's Macquarie Island. This is unusual, since earthquakes of magnitude 8 or more occur only about once per year on average.[22] Some seismologists have speculated about a connection between these two earthquakes, saying that the former one might have been a catalyst to the Indian Ocean earthquake, as the two earthquakes happened on opposite sides of the Indo-Australian Plate. However, the U.S. Geological Survey sees no evidence of a causal relationship in this incident. Coincidentally, the earthquake struck almost exactly one year (to the hour) after a 6.6 magnitude earthquake killed an estimated 30,000 people in the city of Bam in Iran on 26 December 2003

lucas

# data[].attributes.body
Tsunamis have a small amplitude (wave height) offshore, and a very long wavelength (often hundreds of kilometres long, whereas normal ocean waves have a wavelength of only 30 or 40 metres),[23] which is why they generally pass unnoticed at sea, forming only a slight swell usually about 300 millimetres (12 in) above the normal sea surface. They grow in height when they reach shallower water, in a wave shoaling process described below. A tsunami can occur in any tidal state and even at low tide can still inundate coastal areas.

From: Maegan

# data[].attributes.body
Numerous aftershocks were reported off the Andaman Islands, the Nicobar Islands and the region of the original epicentre in the hours and days that followed. The magnitude 8.7 2005 Sumatra earthquake, which originated off the coast of the Sumatran island of Nias, is not considered an aftershock, despite its proximity to the epicenter, and was most likely triggered by stress changes associated with the 2004 event.[20] This earthquake was so large that it produced its own aftershocks (some registering a magnitude of as great as 6.1) and presently ranks as the 7th largest earthquake on record since 1900. Other aftershocks of up to magnitude 6.6 continued to shake the region daily for up to three or four months.[21] As well as continuing aftershocks, the energy released by the original earthquake continued to make its presence felt well after the event. A week after the earthquake, its reverberations could still be measured, providing valuable scientific data about the Earth's interior.
lucas

# data[].attributes.headline
A tsunami is a series of waves, usually referred to as a wave train. 

# data[].attributes.subject
A tsunami is a series of waves, usually referred to as a wave train. 

# data[].attributes.body
BY:EMILY

# data[].attributes.body
Im trying to show you a video

# data[].attributes.body
A giant landslide in Lituya Bay,Alaska,caused the highest wave ever recorded,which had a height of 524 metres (over 1700 feet)

From Keira

# data[].attributes.body
from rane

# data[].attributes.body
Tsunamis have a small amplitude (wave height) offshore, and a very long wavelength (often hundreds of kilometres long, whereas normal ocean waves have a wavelength of only 30 or 40 metres),[23] which is why they generally pass unnoticed at sea, forming only a slight swell usually about 300 millimetres (12 in) above the normal sea surface. They grow in height when they reach shallower water, in a wave shoaling process described below. A tsunami can occur in any tidal state and even at low tide can still inundate coastal areas.

From:Maegan

# data[].attributes.body
Tsunamis generally consist of a series of waves with periods ranging from minutes to hours, arriving in a so-called "wave train".[4] Wave heights of tens of metres can be generated by large events. Although the impact of tsunamis is limited to coastal areas, their destructive power can be enormous and they can affect entire ocean basins; the 2004 Indian Ocean tsunami was among the deadliest natural disasters in human history with at least 290,000 people killed or missing in 14 countries bordering the Indian Ocean.

Rachel Yap

# data[].attributes.headline
A mega tsunami has very huge waves and has occurred in Alaska in 1958. Surprisingly only two people died - 

# data[].attributes.subject
A mega tsunami has very huge waves and has occurred in Alaska in 1958. Surprisingly only two people died - 

# data[].attributes.body
BY:EMIY

# data[].attributes.body
Tsunami can be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Tectonic earthquakes are a particular kind of earthquake that are associated with the Earth's crustal deformation; when these earthquakes occur beneath the sea, the water above the deformed area is displaced from its equilibrium position.[22]More specifically, a tsunami can be generated when thrust faults associated with convergent or destructive plate boundaries move abruptly, resulting in water displacement, owing to the vertical component of movement involved. Movement on normal faults will also cause displacement of the seabed, but the size of the largest of such events is normally too small to give rise to a significant tsunami.

From: Maegan

# data[].attributes.headline
As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its speed decreases below 80 kilometres per hour (50 mph). Its wavelength diminishes to less than 20 kilometres (12 mi) and its amplitude grows enormously. Since the wave still has the same very long period, the tsunami may take minutes to reach full height. Except for the very largest tsunamis, the approaching wave does not break, but rather appears like a fast-moving tidal bore. Open bays and coastlines adjacent to very deep water may shape the tsunami further into a step-like wave with a steep-breaking front.

# data[].attributes.subject
As the tsunami approaches the coast and the waters become shallow, wave shoaling compresses the wave and its speed decreases below 80 kilometres per hour (50 mph). Its wavelength diminishes to less than 20 kilometres (12 mi) and its amplitude grows enormously. Since the wave still has the same very long period, the tsunami may take minutes to reach full height. Except for the very largest tsunamis, the approaching wave does not break, but rather appears like a fast-moving tidal bore. Open bays and coastlines adjacent to very deep water may shape the tsunami further into a step-like wave with a steep-breaking front.

# data[].attributes.body
By:Kayne Low

# data[].attributes.body
During the Persian siege of the sea town Potidaea, Greece, in 479 BC,[2] the Greek historian Herodotus reports how the Persian attackers who tried to exploit an unusual retreat of the water were suddenly surprised by "a great flood-tide, higher, as the people of the place say, than any one of the many that had been before". Herodotus attributes the cause of the sudden flood to the wrath of Poseidon.[3]
By Xuan Ying

# data[].attributes.body
Numerous aftershocks were reported off the Andaman Islands, the Nicobar Islands and the region of the original epicentre in the hours and days that followed. The magnitude 8.7 2005 Sumatra earthquake, which originated off the coast of the Sumatran island of Nias, is not considered an aftershock, despite its proximity to the epicenter, and was most likely triggered by stress changes associated with the 2004 event.[20] This earthquake was so large that it produced its own aftershocks (some registering a magnitude of as great as 6.1) and presently ranks as the 7th largest earthquake on record since 1900. Other aftershocks of up to magnitude 6.6 continued to shake the region daily for up to three or four months.[21] As well as continuing aftershocks, the energy released by the original earthquake continued to make its presence felt well after the event. A week after the earthquake, its reverberations could still be measured, providing valuable scientific data about the Earth's interior.

# data[].attributes.body
In March 2011, the Tohoku earthquake off the eastern coast of Japan caused a tsunami that was a major factor in the death of over 15000 people.

From Ru Xuan

# data[].attributes.body
In fact, one small Indian village saw little damage because the tsunami broke against a forest of over 80,000 trees that had been planted along the shoreline just two years earlier in an attempt to set a Guinness World Record.

# data[].attributes.body
While Japan may have the longest recorded history of tsunamis, the sheer destruction caused by the 2004 Indian Ocean earthquake and tsunami event mark it as the most devastating of its kind in modern times, killing around 230,000 people. The Sumatran region is not unused to tsunamis either, with earthquakes of varying magnitudes regularly occurring off the coast of the island.[18]

From: Maegan

# data[].attributes.body
Because of seismic and volcanic activity tectonic plate boundaries along the Pacific Ring of Fire, tsunamis occur most frequently in the Pacific Ocean, but are worldwide natural phenomena. They are possible wherever large bodies of water are found, including inland lakes, where they can be caused by landslides and glacier calving. Very small tsunamis, non-destructive and undetectable without specialized equipment, occur frequently as a result of minor earthquakes and other events.
By Xuan Ying

# data[].attributes.body
80% of tsunamis in the world ocours in the Pacific Ring of fire

By Nigel Ong Seng Hee

# data[].attributes.headline
In the last 2,000 years, 50, 000 people have died due to a tsunami in the Pacific Ocean. - 

# data[].attributes.subject
In the last 2,000 years, 50, 000 people have died due to a tsunami in the Pacific Ocean. - 

# data[].attributes.body
BY:EMILY

# data[].attributes.body
The Roman historian Ammianus Marcellinus (Res Gestae 26.10.15-19) described the typical sequence of a tsunami, including an incipient earthquake, the sudden retreat of the sea and a following gigantic wave, after the 365 AD tsunami devastated Alexandria.[16][17]

From: Maegan

# data[].attributes.headline
In the 1950s, it was discovered that larger tsunamis than had previously been believed possible could be caused by giant submarine landslides. These rapidly displace large water volumes, as energy transfers to the water at a rate faster than the water can absorb. Their existence was confirmed in 1958, when a giant landslide in Lituya Bay, Alaska, caused the highest wave ever recorded, which had a height of 524 metres (over 1700 feet). The wave didn't travel far, as it struck land almost immediately. Two people fishing in the bay were killed, but another boat amazingly managed to ride the wave.

# data[].attributes.subject
In the 1950s, it was discovered that larger tsunamis than had previously been believed possible could be caused by giant submarine landslides. These rapidly displace large water volumes, as energy transfers to the water at a rate faster than the water can absorb. Their existence was confirmed in 1958, when a giant landslide in Lituya Bay, Alaska, caused the highest wave ever recorded, which had a height of 524 metres (over 1700 feet). The wave didn't travel far, as it struck land almost immediately. Two people fishing in the bay were killed, but another boat amazingly managed to ride the wave.

# data[].attributes.body
By:kayne Low

# data[].attributes.body
As early as 426 BC, the Greek historian Thucydides inquired in his book History of the Peloponnesian War (3.89.1–6) about the causes of tsunamis. He argued rightly that it could only be explained as a consequence of ocean earthquakes, and could see no other possible causes for the phenomenon.[1]
By Xuan Ying

# data[].attributes.body
tsunami is created from a underwater earthquake. Alot of people were killed in the tsunami .There is not much food for the survivor that survive the tsunami.Houses are and shops are destroyed by tsunami .lots of people died in tsunami it is a bad news for people that expriance tsunami

# data[].attributes.body
Tsunami can be predicted in the early days people say that cats,dogs,chicken and other animals are able to predict Tusunami

# data[].attributes.body
ll

# data[].attributes.body
"The cause, in my opinion, of this phenomenon must be sought in the earthquake. At the point where its shock has been the most violent the sea is driven back, and suddenly recoiling with redoubled force, causes the inundation. Without an earthquake I do not see how such an accident could happen."[15]

From: Maegan

# data[].attributes.body
Even if the survivors survive the tsunami,did they have proper living?By Clarence

# data[].attributes.headline
Scientists predict that the next mega tsunami will occur Canary island and will cause damage up to American coastal cities like Boston Miami and new York with waves as high as 100 feet. -

# data[].attributes.subject
Scientists predict that the next mega tsunami will occur Canary island and will cause damage up to American coastal cities like Boston Miami and new York with waves as high as 100 feet. -

# data[].attributes.body
BY:EMILY

# data[].attributes.body
As early as 426 BC the Greek historian Thucydides inquired in his book History of the Peloponnesian War about the causes of tsunami, and was the first to argue that ocean earthquakes must be the cause.[5][6]

From:Maegan

# data[].attributes.body
Tsunami waves do not resemble normal sea waves, because their wavelength is far longer. Rather than appearing as a breaking wave, a tsunami may instead initially resemble a rapidly rising tide, and for this reason they are often referred to as tidal waves.

By Rachel Yap

# data[].attributes.body
Many survivors of the Boxing day tsunami talked of the sea retreating dramatically, leaving fish flipping around in the sand, just before the first huge wave came smashing in. Although it does not precede every tsunami, such a retreat is common - a result of sea water plunging into the huge pit the earthquake creates in the ocean floor. This is how people know tsunami is coming and so they survived.

From: Ee Shyan

# data[].attributes.body
wonder if ships sink in a tsunami?

# data[].attributes.body
What causes tsnamis?

# data[].attributes.body
This tsunami event is actually linked to the explosion of the Krakatau caldera volcano. Multiple waves as high as 37 m were propagated by the violent eruptions and demolished the towns of Anjer and Merak. The sea was reported to recede from the shore at Bombay, India and is said to have killed one person in Sri Lanka. This event killed around 40,000 people in total; however, as many as 2,000 deaths can be attributed directly to the volcanic eruptions, rather than the ensuing tsunami.
By Renee Lee

# data[].attributes.body
Tsunami are waves caused by sudden movement of the ocean due to earthquakes, landslides on the sea floor, land slumping into the ocean, large volcanic eruptions or meteorite impact in the ocean.

By Lim Jia Min

# data[].attributes.headline
Palm trees with strong trunks  are planted on shore as they are known to survive a tsunami. - See more at: http://www.conserve-energy-future.com/various-tsunami-facts.php#sthash.fQSQcp0q.dpuf

# data[].attributes.subject
Palm trees with strong trunks  are planted on shore as they are known to survive a tsunami. - See more at: http://www.conserve-energy-future.com/various-tsunami-facts.php#sthash.fQSQcp0q.dpuf

# data[].attributes.body
BY:EMILY

# data[].attributes.body
1. Hawaii is always at great risk for a tsunami – they get about 1 per year and a severe one every 7 years. The biggest tsunami that occurred Hawaii happened in 1946, the coast of Hilo Island was hit with 30 ft waves at 500 mph.

from Nicole

# data[].attributes.body
bEcArEfUl