| Extended Nucleation of the 1999 Mw 7.6 Izmit Earthquake. | |
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MedLine Citation:
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PMID: 21330536 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Laboratory and theoretical studies suggest that earthquakes are preceded by a phase of developing slip instability in which the fault slips slowly before accelerating to dynamic rupture. We report here that one of the best-recorded large earthquakes to date, the 1999 moment magnitude (M(w)) 7.6 Izmit (Turkey) earthquake, was preceded by a seismic signal of long duration that originated from the hypocenter. The signal consisted of a succession of repetitive seismic bursts, accelerating with time, and increased low-frequency seismic noise. These observations show that the earthquake was preceded for 44 minutes by a phase of slow slip occurring at the base of the brittle crust. This slip accelerated slowly initially, and then rapidly accelerated in the 2 minutes preceding the earthquake. |
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Authors:
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Michel Bouchon; Hayrullah Karabulut; Mustafa Aktar; Serdar Ozalaybey; Jean Schmittbuhl; Marie-Paule Bouin |
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Publication Detail:
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Type: JOURNAL ARTICLE |
Journal Detail:
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Title: Science (New York, N.Y.) Volume: 331 ISSN: 1095-9203 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404511 Medline TA: Science Country: - |
Other Details:
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Languages: ENG Pagination: 877-880 Citation Subset: - |
Affiliation:
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Centre National de la Recherche Scientifique and Université Joseph Fourier, Grenoble, ISTerre, BP 53, 38041 Grenoble, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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