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National Geographic magazine has many images of the wreckage caused by tsunamis around the world. Its tsunami photo gallery includes photographs of the disasters in Sri Lanka, Chile and the Indian Ocean. More »

www.reference.com Science Earth Science Tsunamis

The height of a tsunami is determined by the depth of water at the point where it starts. Tsunami wave heights of up to 50 feet have been recorded, according to Wikipedia. More »

www.reference.com Science Earth Science Tsunamis

Tsunamis are measured by their runup,which is the difference between an observed sea level and the distance the tsunami waters reach on shore. This is generally measured once the danger has passed, so debris and destruct... More »

www.reference.com Science Earth Science Tsunamis
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Tsunamis most frequently occur in countries bordering the Pacific Ocean around the Pacific Rim. This area also covers the region referred to as the Ring of Fire, a place known for severe tectonic-plate shifts. The earthq... More »

www.reference.com Science Earth Science Tsunamis

Tsunamis usually occur when earthquakes take place underneath the ocean at tectonic plate boundaries, or when volcanic eruptions or landslides take place in the ocean. Underwater earthquakes cause the ocean floor to fall... More »

www.reference.com Science Earth Science Tsunamis

Tsunamis start from any large, sudden displacement of water. This includes earthquakes, landslides, volcanic eruptions and the breaking of coastal ice, such as in glaciers or icebergs. Rarely, a large body from space, su... More »

www.reference.com Science Earth Science Tsunamis

Tsunamis happen when earthquakes, landslides or volcanic eruptions disturb the ocean floor. Most tsunamis occur when there are earthquakes at tectonic plate boundaries. When the ocean floor at the boundary rises or falls... More »

www.reference.com Science Earth Science Tsunamis