# data[].attributes.body
1st Video

There was a 9.0 earthquake in 2011

In casa numa people had to evacuate and got surrounded

The largest quake made more than 25000 people die

A passing ship only raises a height of 2 feet

Japan may be the most siemologil country in the world

Tsunamis are some really cool but terrifying events

2nd Video

If there is a tremor and you are on the beach then you need to run away

Do not touch power lines

Do not get your children

If leaving your home, turn off all appliances

If your at home you only have a few minutes to escape

3rd Video

Small tsunamis can do damage as well

When there is a sudden rise on the waves of the water

Go far away from the water

Try to run inland or away from any area where there is a chance of there being a tsunami you know gods

Run if there is a sudden tremor in the ground that you can feel

Run if there is a sudden boom in the sudden distance, you should run

If there is any chance there is any of those signs

tsunami is a japanese word meaning harbour (tsu) wave (nami)

A tsunami is not just one wave but a series of waves

When tsunamis are near the coast, they slow down but increase in height

You should get off the beach and run inland or to a safe place

Tsunamis are More common in the pacific

# data[].attributes.body
A Tsunami is a series of ocean waves caused by underwater earthquakes, landslides, or volcanic eruptions.  Rarely, a Tsunami can be generated by a giant meteor.
A Tsunami can travel at a speeds of about 500 miles or 805 kilometers an hour, almost as fast as a jet plane.
In 2004,the indian ocean Tsunami was caused by an earthquake with the energy of 23,000 atomic bombs.  After the earthquake, killer waves radiating from the epicenter slammed into the coastline of 11 countries.  The final death toll was 283,00.Scientist believe that an asteroid struck the indian ocean about 4,800 years ago.The Tsunami the resulted is theorized to have been approximately 600 feet (180 m) high.
Of the three major oceans, only the Pacific Ocean has an integrated multinational tsunami warning system. There was no tsunami warning system in the Indian Ocean in 2004, though experts had previously recommended one be installed.Because of its long history of devastating tsunamis, Japan had the most advanced tsunami warning system in the world prior to the 2011 tsunami, which consisted of more than 1,500 seismometers and more than 500 water-level gauges.

# data[].attributes.body
Before a tsunami there is an earthquake that may or may not be felt.  During a tsunami,  the weather can be anything such as rainy, sunny, or cloudy.  After a tsunami, most things on ground level will be soaked and there might be some flooded buildings or flooded spots in the street.

# data[].attributes.body
Deep Ocean Tsunami Detection Buoys are used to confirm tsunami waves from oceanic earthquakes.  They observe and record the sea level, sometimes predicting tsunamis in real time. They have anchors attached to the ocean floor that record pressure changes in the ocean that are transmitted to satellites in weather laboratories.

# data[].attributes.attachment_link.readable_text
What is a deep-ocean tsunami detection buoy?

Deep-ocean tsunami detection buoys are one of two types of instrument used by the Bureau of Meteorology (Bureau) to confirm the existence of tsunami waves generated by undersea earthquakes. These buoys observe and record changes in sea level out in the deep ocean. This enhances the capability for early detection and real-time reporting of tsunamis before they reach land.

How does a deep-ocean tsunami detection buoy work?

A typical tsunami buoy system comprises two components; the pressure sensor anchored to the sea floor and the surface buoy. The sensor on the sea floor measures the change in height of the water column above by measuring associated changes in the water pressure. This water column height is communicated to the surface buoy by acoustic telemetry and then relayed via satellite to the tsunami warning centre.

The system has two modes - 'standard' and 'event'. The system generally operates in 'standard' mode, where it routinely collects sea level information and reports via satellite at relatively low frequency transmission intervals (i.e. every 15 minutes). This helps to conserve battery life and hence extend the deployment life. The tsunami buoy is triggered into 'event' mode when the pressure sensor first detects the faster moving seismic wave moving through the sea floor. It then commences reporting sea level information at one minute intervals to enable rapid verification of the possible existence of a tsunami. The system returns to standard mode after 4 hours if no further seismic events are detected.

Data from Australia's tsunami detection buoys are made freely available to the international community and the tsunami warning centres of other countries in real-time using the World Meteorological Organization's dedicated Global Telecommunication System (WMO GTS).

How is the location for deployment of a tsunami buoy determined?

The best location for deployment of a tsunami buoy is determined by careful consideration of a number of factors. The tsunami buoy needs to be far enough away from any potential earthquake epicentre to ensure there is no interference between the earthquake signal at the buoy and the sea-level signal from the tsunami. On the other hand, the tsunami buoy needs to be close enough to the epicentre to enable timely detection of any tsunami and maximise the lead time of tsunami forecasts for coastal areas. In addition, tsunami buoys must ideally be placed in water deeper than 3000m to ensure the observed signal is not contaminated by other types of waves that have shallower effects (e.g. surface wind-waves). International maritime boundaries must also be considered when deploying tsunami buoy systems.

Where are Australia's tsunami buoys being deployed?

Australia is potentially vulnerable to tsunami generated by undersea earthquakes along subduction zones (where the earth's tectonic plates are moving under each other) to the northwest, northeast, east and southeast of Australia. Deep-ocean tsunami detection buoys (and coastal sea level stations) are used to monitor the oceans in each of these regions. There are also spare buoys on hand to ensure maintenance regimes and emergency replacements can be carried out if necessary.

Australia's first tsunami detection buoy was deployed on 15 April 2007 in the South East Tasman Sea, some 1200 km from Tasmania. The deployment was carried out in collaboration with NOAA. This buoy captures critical tsunami data from the oceans near the Puysegur fault line southwest of New Zealand. A few more tsunami buoys have since been deployed strategically to protect Australia from tsunami threat due to earthquake sources to the northwest, northeast and southeast of the Australian mainland.

How do these buoys contribute to tsunami warnings in Australia?

Due to the complexity and uncertainty as to whether an undersea earthquake has the potential to generate a tsunami, the observation of sea levels is a critical factor in verifying whether a tsunami has actually been generated. The use of actual sea level observations, as compared with reliance on seismic observations alone, therefore helps to significantly reduce the risk of false tsunami warnings being issued. All Australian-owned buoys, as well as deep-ocean buoys operated by other countries in the Australian region, provide critical data to Australia's tsunami warning system.

The buoys are just one part of Australia's sea-level observing system, which also includes a number of new and long standing coastal sea level stations that now have the ability to report sea level variations in real-time to monitor for tsunamis. Combined, these technologies provide a constant stream of sea level data for the Joint Australian Tsunami Warning Centre (JATWC) operated by the Bureau of Meteorology and Geoscience Australia, enhancing tsunami warnings for the Australian public.

What is the in-water life of a tsunami detection buoy?

The life cycle of a deployed tsunami buoy is approximately 2 to 4 years. The Bureau's maintenance regime involves the replacement of the surface buoy and the sea-floor pressure sensor every one to two years. The devices retrieved during regular maintenance are refurbished and made ready for the next redeployment.

Interesting Facts

Deep-ocean tsunami detection buoy technology was initially developed in the United States of America by the Pacific Marine Environmental Laboratory (PMEL) of the National Oceanic and Atmospheric Administration (NOAA) as "DART™" (Deep-ocean Assessment and Reporting of Tsunami) buoys.

The latest DART™ II systems contain two independent and redundant communications systems as back-up.

These systems are capable of measuring sea-level changes of less than a millimetre in the deep ocean.

Two-way communication between the tsunami buoy and the tsunami warning centre means that the buoy can be controlled remotely. This two-way communication allows for troubleshooting of the system and also allows people to put the systems into 'event' mode in case of a possible tsunami or for research purposes.

# data[].attributes.attachment_link.description
Deep-ocean tsunami detection buoys are one of two types of instrument used by the Bureau of Meteorology (Bureau) to confirm the existence of tsunami waves generated by undersea earthquakes. These buoys observe and record changes in sea level out in the deep ocean.

# data[].attributes.body
Most Tsunamis occur in the Pacific Ring of Fire.  Tsunamis can be predicted with a recorder anchored to the ocean that is attached to a Deep Ocean Tsunami Detection Buoy that transmits any pressure changes in the ocean to satellites which scientists observe.

# data[].attributes.body
If you are at ground level during a tsunami, get to the highest and sturdiest point possible.  If you are at home,  before you go,  turn off any appliances.  If you are on a beach during a tsunami warning, do not wait for the waves to come. Immediately move to a higher and sturdier point.  If you are on a boat in the ocean during a tsunami, do not try to dock your boat at a harbor or dock.  The waves could slam your boat into the dock and cause damage to both.  As long as you are in the deep ocean (>100) when a tsunami is coming, you should stay there and wait for the tsunami to pass you.

# data[].attributes.body
Small tsunamis can do damage as well.  Tsunami is a japanese word meaning harbour (tsu) wave (nami).When tsunamis are near the coast, they slow down but increase in height. About 80% of the tsunamis occur in the Pacific Ocean’s Ring of Fire.Tsunamis can travel as fast as 5000 miles per hour, without being noticed and can cross the entire ocean in less than a day.The places with the greatest risk of tsunami are Washington, Oregon, Hawaii, Alaska and California.the indian ocean   tsunami that took place in December 2004 was estimated to have energy of 23,000 atom bombs. It killed around 283,000 people.People who live in coastal areas, upon experiencing extremely strong earthquakes should be aware that a tsunami is likely to occur.A mega tsunami has very huge waves and has occurred in Alaska in 1958. Surprisingly only two people died.Scientists predict that the next mega tsunami will occur Canary island and will cause damage upto American coastal cities like Boston Miami and new York with waves as high as 100 feet.