Earthquake in a Maze: Compressional Rupture Branching During the 2012 <i>M</i> <sub>w</sub> 8.6 Sumatra Earthquake
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- L. Meng
- Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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- J.-P. Ampuero
- Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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- J. Stock
- Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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- Z. Duputel
- Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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- Y. Luo
- Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
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- V. C. Tsai
- Seismological Laboratory, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.
書誌事項
- 公開日
- 2012-08-10
- DOI
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- 10.1126/science.1224030
- 公開者
- American Association for the Advancement of Science (AAAS)
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説明
<jats:title>Earthquake in a Maze</jats:title> <jats:p> The 11 April 2012 magnitude 8.6 earthquake offshore of Sumatra was the largest measured earthquake along a strike-slip boundary that modern seismological instruments have ever recorded. Despite its size and proximity to a large population, there was no subsequent tsunami and there were no reported fatalities. <jats:bold> Meng <jats:italic>et al.</jats:italic> </jats:bold> (p. <jats:related-article xmlns:xlink="http://www.w3.org/1999/xlink" ext-link-type="doi" page="724" related-article-type="in-this-issue" vol="337" xlink:href="10.1126/science.1224030">724</jats:related-article> , published online 19 July) used teleseismic data from seismological networks in Japan and Europe to image the source of high-frequency radiation generated by the earthquake to understand the mechanics of this unique event. The resultant back projections showed that the earthquake slowly ruptured along a complex series of faults. The deeper-than-usual rupture path and large stress drop are both features that may not be unique to this earthquake, suggesting that regions in a similar tectonic environment may have the potential for more complex—or larger—intraplate earthquakes than might have been expected. </jats:p>
収録刊行物
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- Science
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Science 337 (6095), 724-726, 2012-08-10
American Association for the Advancement of Science (AAAS)
