Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/2015JB011941 |
Recovery of secular deformation field of Mojave Shear Zone in Southern California from historical terrestrial and GPS measurements | |
Liu, Shaozhuo1; Shen, Zheng-Kang2,3; Buergmann, Roland4 | |
通讯作者 | Shen, Zheng-Kang |
来源期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
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ISSN | 2169-9313 |
EISSN | 2169-9356 |
出版年 | 2015 |
卷号 | 120期号:5页码:3965-3990 |
英文摘要 | The 1992 M-w 7.3 Landers and 1999 M-w 7.1 Hector Mine earthquakes struck the Eastern California Shear Zone (ECSZ) in the Mojave Desert, Southern California. Coseismic and postseismic deformation from these events affect efforts to use Global Positioning System (GPS) observations collected since these events to establish a secular surface velocity field, especially in the near field of the coseismic ruptures. We devise block motion models constrained by both historical pre-Landers triangulation and trilateration observations and post-Landers GPS measurements to recover the secular deformation field and differentiate the postseismic transients in the Mojave region. Postseismic transients are found to remain in the Southern California Earthquake Center Crustal Motion Map Version 4, Plate Boundary Observatory, and Scripps Orbit and Permanent Array Center GPS velocity solutions in the form of 2-3mm/yr excess right-lateral shear across the Landers and Hector Mine coseismic ruptures. The cumulative deformation rate across the Mojave ECSZ is 13.2-14.4mm/yr, at least twice the geologic rate since the late Pleistocene (6.21.9mm/yr). Postseismic GPS time series based on our secular velocity field reveal enduring late-stage transient motions in the near field of the coseismic ruptures that provide new constraints on the rheological structure of the lower crust and upper mantle. |
英文关键词 | Mojave East California Shear Zone secular deformation Landers and Hector Mine earthquakes postseismic deformation GPS triangulation trilateration |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China ; USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000356454500058 |
WOS关键词 | SAN-ANDREAS FAULT ; 1999 HECTOR MINE ; TRANSIENT STRAIN ACCUMULATION ; EASTERN CALIFORNIA ; POSTSEISMIC DEFORMATION ; LANDERS EARTHQUAKE ; SLIP RATES ; OWENS-VALLEY ; LOWER CRUST ; BIG BEND |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
来源机构 | 北京大学 ; University of California, Berkeley ; University of California, Los Angeles |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/188723 |
作者单位 | 1.China Earthquake Adm, Inst Geol, State Key Lab Earthquake Dynam, Beijing, Peoples R China; 2.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA 90095 USA; 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China; 4.Univ Calif Berkeley, Dept Earth & Planetary Sci, Berkeley, CA 94720 USA |
推荐引用方式 GB/T 7714 | Liu, Shaozhuo,Shen, Zheng-Kang,Buergmann, Roland. Recovery of secular deformation field of Mojave Shear Zone in Southern California from historical terrestrial and GPS measurements[J]. 北京大学, University of California, Berkeley, University of California, Los Angeles,2015,120(5):3965-3990. |
APA | Liu, Shaozhuo,Shen, Zheng-Kang,&Buergmann, Roland.(2015).Recovery of secular deformation field of Mojave Shear Zone in Southern California from historical terrestrial and GPS measurements.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,120(5),3965-3990. |
MLA | Liu, Shaozhuo,et al."Recovery of secular deformation field of Mojave Shear Zone in Southern California from historical terrestrial and GPS measurements".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 120.5(2015):3965-3990. |
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