气候变化领域集成服务门户(CCPortal): Modeling the Contribution of Poroelastic Deformation to Postseismic Geodetic Signals

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DOI	10.1029/2020GL086945
	Modeling the Contribution of Poroelastic Deformation to Postseismic Geodetic Signals
	McCormack K.; Hesse M.A.; Dixon T.; Malservisi R.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:8
英文摘要	To constrain the poroelastic component of postseismic deformation, we model the subsurface hydrologic response to the Mw 7.6 subduction zone earthquake that occurred on the plate interface beneath the Nicoya peninsula in Costa Rica on 5 September 2012. The model shows that poroelastic relaxation occurs on multiple time scales and the associated deformation can be up to 2 cm for the trench-perpendicular component. By modeling the time-dependent deformation associated with poroelastic relaxation, we can begin to remove its contribution from the observed geodetic signal. Inversions for after slip that ignore poroelastic deformation have errors of 10–20% overall and up to 50% locally. Poroelastic effects can both mute and amplify the inferred afterslip. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Geodesy; Hydrologic response; Multiple time scale; Plate interfaces; Poroelastic; Poroelastic deformation; Postseismic deformation; Subduction-zone earthquakes; Time-dependent deformation; Deformation; aftershock; deformation mechanism; earthquake magnitude; geodetic datum; poroelasticity; seismic data; slip; subduction zone; Costa Rica; Nicoya Peninsula
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170431
作者单位	Department of Geological Sciences, University of Texas at Austin, Austin, TX, United States; Oden Institute for Computational Engineering and Science, University of Texas at AustinTX, United States; School of Geosciences, University of South Florida, Tampa, FL, United States
推荐引用方式 GB/T 7714	McCormack K.,Hesse M.A.,Dixon T.,et al. Modeling the Contribution of Poroelastic Deformation to Postseismic Geodetic Signals[J],2020,47(8).
APA	McCormack K.,Hesse M.A.,Dixon T.,&Malservisi R..(2020).Modeling the Contribution of Poroelastic Deformation to Postseismic Geodetic Signals.Geophysical Research Letters,47(8).
MLA	McCormack K.,et al."Modeling the Contribution of Poroelastic Deformation to Postseismic Geodetic Signals".Geophysical Research Letters 47.8(2020).