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2004 Indian Ocean earthquake: The epicenter is off the northwestern coast of Sumatra, Indonesia. 9.2 This is the third largest earthquake in recorded history and generated massive tsunamis, which caused widespread devastation when they hit land, leaving an estimated 230,000 people dead in countries around the Bay of Bengal and the Indian Ocean.
Earthquakes occur when two plates suddenly slip past each other, setting off seismic waves that cause the planet's surface to shake, according to the USGS. What is an earthquake, scientifically ...
Megathrust earthquakes are almost exclusive to tectonic subduction zones and are often associated with the Pacific and Indian Oceans. [5] These subduction zones are also largely responsible for the volcanic activity associated with the Pacific Ring of Fire. [12] Since these earthquakes deform the ocean floor, they often generate strong tsunami ...
Marine geophysics is the scientific discipline that employs methods of geophysics to study the world's ocean basins and continental margins, particularly the solid earth beneath the ocean. It shares objectives with marine geology , which uses sedimentological , paleontological , and geochemical methods.
The people who recorded the incident in Japan couldn’t have known that the ground had shaken an ocean away, in the present-day United States. Today, the Cascadia Subduction Zone remains eerily ...
The magnitude of an earthquake isn't enough to determine how much death and destruction it will cause. Location, time of day, building codes and other factors make a big difference.
Earthquakes that caused the greatest loss of life, while powerful, were deadly because of their proximity to either heavily populated areas or the ocean, where earthquakes often create tsunamis that can devastate communities thousands of kilometers away. Regions most at risk for great loss of life include those where earthquakes are relatively ...
Movement of tectonic plates against each other sends seismic waves rippling across earth’s surface