Title: Dynamics of Parallel Strike-Slip Faults with Pore Fluid Pressure Change and Off-Fault Damage
Abstract: Research Article| March 25, 2014 Dynamics of Parallel Strike‐Slip Faults with Pore Fluid Pressure Change and Off‐Fault Damage Zaifeng Liu; Zaifeng Liu Center for Tectonophysics, Department of Geology and Geophysics, Texas A&M University, MS 3115, College Station, Texas 77843 Search for other works by this author on: GSW Google Scholar Benchun Duan Benchun Duan Center for Tectonophysics, Department of Geology and Geophysics, Texas A&M University, MS 3115, College Station, Texas 77843 Search for other works by this author on: GSW Google Scholar Author and Article Information Zaifeng Liu Center for Tectonophysics, Department of Geology and Geophysics, Texas A&M University, MS 3115, College Station, Texas 77843 Benchun Duan Center for Tectonophysics, Department of Geology and Geophysics, Texas A&M University, MS 3115, College Station, Texas 77843 Publisher: Seismological Society of America First Online: 14 Jul 2017 Online ISSN: 1943-3573 Print ISSN: 0037-1106 Bulletin of the Seismological Society of America (2014) 104 (2): 780–792. https://doi.org/10.1785/0120130112 Article history First Online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Zaifeng Liu, Benchun Duan; Dynamics of Parallel Strike‐Slip Faults with Pore Fluid Pressure Change and Off‐Fault Damage. Bulletin of the Seismological Society of America 2014;; 104 (2): 780–792. doi: https://doi.org/10.1785/0120130112 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract We use a 2D finite‐element program to investigate how effects of time‐dependent pore pressure and off‐fault damage in the form of plastic yielding could affect earthquake rupture on parallel strike‐slip faults with a stepover. From single‐fault tests, we find that the positive Coulomb stress (PCS) region at the end of the first fault controls the rupture initiation time and location on the second fault. Plastic deformation could significantly reduce the effective normal stress and adjust the shear stress in a specific direction, resulting in a narrowband with PCS in a dilatational stepover favoring the initiation of rupture. For a compressive stepover, the effect of plastic deformation is less obvious and the crescent‐shaped PCS region triggers rupture initiation on the second fault. The undrained pore pressure increases the effective normal stress in a dilatational stepover, which significantly reduces the jumping ability of rupture. When both undrained pore pressure and significant off‐fault damage are present, the effect of undrained pore pressure dominates in the dilatational stepover, whereas plastic deformation in the compressive stepover slightly reduces the maximum jumpable width. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2014
Publication Date: 2014-03-25
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 5
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