Seafloor features steered tsunamis.Tsunamis circled the globe after a magnitude 9.3 earthquake struck the Indian Ocean Indian Ocean, third largest ocean, c.28,350,000 sq mi (73,427,000 sq km), extending from S Asia to Antarctica and from E Africa to SE Australia; it is c.4,000 mi (6,400 km) wide at the equator. It constitutes about 20% of the world's total ocean area. last Dec. 26 (see p. 136). However, those waves didn't spread evenly, says Vasily Titov of the National Oceanic and Atmospheric Administration Noun 1. National Oceanic and Atmospheric Administration - an agency in the Department of Commerce that maps the oceans and conserves their living resources; predicts changes to the earth's environment; provides weather reports and forecasts floods and hurricanes and in Seattle. computer models suggest that the largest waves (orange zones) initially moved perpendicular to the rupturing fault (black boxes in inset). Then, the deep-reaching waves were guided by midocean ridges, Titov and his colleagues report in an upcoming Science. Tide data show that tsunami heights in Nova Scotia Nova Scotia (nō`və skō`shə) [Lat.,=new Scotland], province (2001 pop. 908,007), 21,425 sq mi (55,491 sq km), E Canada. Geography , Mexico, Peru, and Chile--all more than 20,000 kilometers from the earthquake's epicenter-topped 50 centimeters, even though the wave height at Cocos Island
Cocos Island (Spanish: Isla del Coco) is an island located off the shore of Costa Rica. , just 1,700 km south of the epicenter, measured only 30 cm. |
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