气候变化领域集成服务门户(CCPortal): Three-Dimensional Structure, Ground Rupture Hazards, and Static Stress Models for Complex Nonplanar Thrust Faults in the Ventura Basin, Southern California

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DOI	10.1029/2020JB019539
	Three-Dimensional Structure, Ground Rupture Hazards, and Static Stress Models for Complex Nonplanar Thrust Faults in the Ventura Basin, Southern California
	Hughes A.; Bell R.E.; Mildon Z.K.; Rood D.H.; Whittaker A.C.; Rockwell T.K.; Levy Y.; DeVecchio D.E.; Marshall S.T.; Nicholson C.
发表日期	2020
ISSN	21699313
卷号	125 期号:7
英文摘要	To investigate the subsurface geometry of a recently discovered, seismically active fault in the Ventura basin, southern California, USA, we present a series of cross sections and a new three-dimensional fault model across the Southern San Cayetano fault (SSCF) based on integration of surface data with petroleum industry well log data. Additionally, the fault model for the SSCF, along with models of other regional faults extracted from the Southern California Earthquake Center three-dimensional Community Fault Model, are incorporated in static Coulomb stress modeling to investigate static Coulomb stress transfer between thrust faults with complex geometry and to further our understanding of stress transfer in the Ventura basin. The results of the subsurface well investigation provide evidence for a low-angle SSCF that dips ~15° north and connects with the western section of the San Cayetano fault around 1.5–3.5 km depth. We interpret the results of static Coulomb stress models to partly explain contrasting geomorphic expression between different sections of the San Cayetano fault and a potential mismatch in timings between large-magnitude uplift events suggested by paleoseismic studies on the Pitas Point, Ventura, and San Cayetano faults. In addition to new insights into the structure and potential rupture hazard of a recently discovered active reverse fault in a highly populated area of southern California, this study provides a simple method to model static Coulomb stress transfer on complex geometry faults in fold and thrust belts. ©2020. The Authors.
英文关键词	multifault ruptures; seismic hazard; Southern San Cayetano fault; static Coulomb stress transfer; thrust faults; Ventura basin
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187738
作者单位	Department of Earth Science and Engineering, Imperial College London, London, United Kingdom; Institut de Physique du Globe de Paris (CNRS UMR7154), Paris, France; School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, United Kingdom; Earth Research Institute, University of California, Santa Barbara, Santa Barbara, CA, United States; San Diego State University, San Diego, CA, United States; Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA, United States; School of Earth and Space Exploration, Arizona State University, Phoenix, AZ, United States; Department of Geological and Environmental Sciences, Appalachian State University, Boone, NC, United States; Marine Science Institute, University of California, Santa Barbara, Santa Barbara, CA, United States
推荐引用方式 GB/T 7714	Hughes A.,Bell R.E.,Mildon Z.K.,et al. Three-Dimensional Structure, Ground Rupture Hazards, and Static Stress Models for Complex Nonplanar Thrust Faults in the Ventura Basin, Southern California[J],2020,125(7).
APA	Hughes A..,Bell R.E..,Mildon Z.K..,Rood D.H..,Whittaker A.C..,...&Nicholson C..(2020).Three-Dimensional Structure, Ground Rupture Hazards, and Static Stress Models for Complex Nonplanar Thrust Faults in the Ventura Basin, Southern California.Journal of Geophysical Research: Solid Earth,125(7).
MLA	Hughes A.,et al."Three-Dimensional Structure, Ground Rupture Hazards, and Static Stress Models for Complex Nonplanar Thrust Faults in the Ventura Basin, Southern California".Journal of Geophysical Research: Solid Earth 125.7(2020).