Understanding how this catastrophe unfolded requires a look at the geological forces that set the chain of events in motion long before the first wave crashed ashore. In some locations, the waves slowed to the point where the massive amount of water behind them continued to surge forward, causing the wave to rise vertically.
Why the 2004 Tsunami Was So Devastating: The Science of Destruction
Shoaling and Runup: The Deadly Transformation The true destructive power of the tsunami was unleashed when the waves approached the coastline. Upon reaching the shore, the waves did not simply retreat back into the ocean after the first impact.
However, as these waves traveled across the Indian Ocean at speeds exceeding 800 kilometers per hour, they carried an enormous amount of kinetic energy. Unlike typical strike-slip earthquakes that slide horizontally, this event involved a violent vertical displacement of the seafloor, pushing a massive column of water upward.
Why the 2004 Tsunami Was So Devastating: The Science of Destruction
Plate Tectonics and Energy Release The Earth's lithosphere is broken into tectonic plates that float on the semi-fluid asthenosphere below. This initial displacement generates a series of waves that radiate outward in a circular pattern from the epicenter, which was located approximately 160 kilometers west of Sumatra.
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