On the average of about half-a-dozen times per century, a tsunami from one of these regions sweeps across the entire Pacific, is reflected from distant shores, and sets the entire ocean in motion for days. For example, the Chilean tsunami caused death and destruction throughout the Pacific. Hawaii, Samoa, and Easter Island all recorded runups exceeding 4 m; 61 people were killed in Hawaii. In Japan people died. Although not as frequent, destructive tsunamis have been also been generated in the Atlantic and the Indian Oceans, the Mediterranean Sea and even within smaller bodies of water, like the Sea of Marmara, in Turkey.
Reefs, bays, entrances to rivers, undersea features and the slope of the beach all help to modify the tsunami as it approaches shore. The first wave may not be the largest in the series of waves. One coastal area may see no damaging wave activity while another may receive large, violent, destructive waves.
What should I do in case of a tsunami? In the event that you do find yourself near the coast when an earthquake hits, be aware of the following guidelines:. What happened in American Samoa? On the morning of Tuesday, September 29, at am American Samoa was struck by a powerful earthquake. Registering a magnitude 8. The first wave struck the island only 15 minutes after the earthquake stopped, catching many islanders off-guard.
The narrowing of the harbor at this point makes it particularly vulnerable to tsunami damage, as water is funneled there. The first floor office included the visitor center with newly installed exhibits, cultural resources storage and the administrative and superintendent's offices. There was a dive locker and two containers in the parking area of Pago Plaza that stored the equipment needed to perform marine, terrestrial and maintenance duties.
Most work days begin at 7am, so the earthquake and tsunami caught most employees either at work or on their way. As employees ran up the mountain across the street from the headquarters, the first wave of water surged into the parking area destroying the fleet and storage facilities located there.
Please Contact Us. Toggle navigation JetStream. World's Deadliest Tsunamis B. C to A. All rights reserved. Tsunamis What Causes a Tsunami? Lightning Strikes A supercell thunderstorm strikes in South Dakota. Share Tweet Email.
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