Publication Date:
2011-05-21
Description:
Geophysical observations from the 2011 moment magnitude (M(w)) 9.0 Tohoku-Oki, Japan earthquake allow exploration of a rare large event along a subduction megathrust. Models for this event indicate that the distribution of coseismic fault slip exceeded 50 meters in places. Sources of high-frequency seismic waves delineate the edges of the deepest portions of coseismic slip and do not simply correlate with the locations of peak slip. Relative to the M(w) 8.8 2010 Maule, Chile earthquake, the Tohoku-Oki earthquake was deficient in high-frequency seismic radiation--a difference that we attribute to its relatively shallow depth. Estimates of total fault slip and surface secular strain accumulation on millennial time scales suggest the need to consider the potential for a future large earthquake just south of this event.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Simons, Mark -- Minson, Sarah E -- Sladen, Anthony -- Ortega, Francisco -- Jiang, Junle -- Owen, Susan E -- Meng, Lingsen -- Ampuero, Jean-Paul -- Wei, Shengji -- Chu, Risheng -- Helmberger, Donald V -- Kanamori, Hiroo -- Hetland, Eric -- Moore, Angelyn W -- Webb, Frank H -- New York, N.Y. -- Science. 2011 Jun 17;332(6036):1421-5. doi: 10.1126/science.1206731. Epub 2011 May 19.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA. simons@caltech.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21596953" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
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Medicine
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Natural Sciences in General
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Physics
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