| Experts: Seabed off Miyagi sank before March 11 | |
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| Tweet Topic Started: June 8 2011, 02:05 AM (475 Views) | |
| Audi-Tek | June 8 2011, 02:05 AM Post #1 |
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Experts: Seabed off Miyagi sank before March 11 Researchers have found that the seabed off Japan's northeastern coast had been gradually sinking days before the March 11th earthquake. A team from Tohoku University analyzed data taken at 2 monitoring sites 80 kilometers off the Oshika Peninsula in Miyagi Prefecture. In late May, the team recovered monitoring devices from the seafloor at a depth of 1,200 meters. The data shows that the sea bottom subsided 15 centimeters in a magnitude 7.3 quake on March 9th and one meter in a magnitude 9.0 quake on March 11th. The data also indicates that the seabed had been sinking at a rate of several centimeters per day between the 2 tremors. The researchers say the finding may help them to unravel the mechanism of an imminent gigantic earthquake. The team leader, Associate Professor Ryota Hino, says they have captured a phenomenon that precedes a major earthquake. He says they hope to use this information to improve the predictions of major quakes. Wednesday, June 08, 2011 |
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2:24 AM Jul 11