| Earthquakes on dipping faults: the effects of broken symmetry | |
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MedLine Citation:
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PMID: 9582114 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Dynamic simulations of earthquakes on dipping faults show asymmetric near-source ground motion caused by the asymmetric geometry of such faults. The ground motion from a thrust or reverse fault is larger than that of a normal fault by a factor of 2 or more, given identical initial stress magnitudes. The motion of the hanging wall is larger than that of the footwall in both thrust (reverse) and normal earthquakes. The asymmetry between normal and thrust (reverse) faults results from time-dependent normal stress caused by the interaction of the earthquake-generated stress field with Earth's free surface. The asymmetry between hanging wall and footwall results from the asymmetric mass and geometry on the two sides of the fault. |
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Authors:
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Oglesby; Archuleta; Nielsen |
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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: 280 ISSN: 1095-9203 ISO Abbreviation: Science Publication Date: 1998 May |
Date Detail:
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Created Date: 1998-05-21 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: 1055-9 Citation Subset: - |
Affiliation:
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D. D. Oglesby and R. J. Archuleta, Institute for Crustal Studies and Department of Geological Sciences, University of California at Santa Barbara, Santa Barbara, CA 93106, USA. S. B. Nielsen, Institute for Crustal Studies and Materials Research Laborat. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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