USGS Dr. Dave Applegate says the Japan earthquake ruptured a 180 mile long by 50 mile wide section of the Earth's crust. Scientists from the United States Geological Service answered questions from the public this afternoon, with some startling revelations made. * The first tsunami wave in Samoa was reportedly one foot tall, but the seventh wave was much larger, indicating coastal areas shoudl remain on tsunami advisory well after the first wave hits, even if that wave appears small. * 100+ aftershocks have rated 5.0 magnitude or more in Japan since the initial shake. * Earth's axis has reportedly shifted ten inches as a result of the quake, and Japan's coast is said to have permanently shifted 2.4 metres. * The quake was 900 times stronger than the quake that hammered San Francisco in 1989. * Aftershocks from the Peru earthquake of almost a year ago are still felt to this day. * Honshu earthquake occurred on ocean floor of the Pacific plate, bumping 250 miles of coastline. * Shaking was felt as far away as China. * The Honshu quake was not as large as the 1964 Alaska earthquake, but was comparable to the recent Chile earthquake. * Tsunami waves that hit California earlier today washed three onlookers out to sea. Two have been recovered. * St Louis, Missouri media outlets report that city has moved an inch as a result of the quake. * Waves from the ensuing tsunami reached 32 feet high. View video: Ruptured Japan. View video: Japan declares state of atomic power emergency. Japan declares a state of atomic power emergency and races to evacuate residents near reactors while Tokyo braces for aftershocks. View video: Buildings crumble in Japan quake. As people flee the trembling buildings amateur video shows debris crashing onto roads. View video: The path of the tsunami. NOAA - National Oceanic and Atmospheric Administration animation of where the tsunami went/is going. View video: Japan devastated after massive quake. Japan's most powerful earthquake on record floods large swathes of land, and sparks scores of fires across the country. View video: Huge refinery fire after quake hits. An oil refinery near Japan's capital Tokyo goes up in flames after the country was hit by the biggest quake since records began. View video:Tsunami waves close in on Japan. Triggered by a magnitude 8.9 quake early Friday morning tsunami waves are sweeping away homes and cars in northeastern Japan. View video:U.S. oceanographer talks about tsunamis. Nathan Becker, an oceanographer at the U.S. Pacific Tsunami Warning Center, said the height of the waves could increase as they hit the coastline. View video:Devastating quake hits Japan.A huge 8.9 magnitude quake hits Japan causing a ten meter high tsunami along parts of the country's coastline.Japan earthquake factbox: Entire Japan coast shifted 2.4 metres, earth axis moves ten inches
Staff of the National System of Territorial Studies (SNET) points at a screen showing the areas that can affected by a possible tsunami during a news conference in San Salvador March 11, 2011. The Civil Protection Directorate of El Salvador ordered the suspension of classes in the coastal areas and urged people to take precautions and stay away from these areas due to a possible tsunami. The biggest earthquake to hit Japan since records began 140 years ago struck the northeast coast on Friday, triggering a 10-metre tsunami that swept away everything in its path, including houses, ships, cars and farm buildings on fire.
Photograph by: Luis Galdamez, REUTERS
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