Recovery of secular deformation field of Mojave Shear Zone in Southern   California from historical terrestrial and GPS measurements

doi:10.1002/2015JB011941

CORC > 北京大学 > 地球与空间科学学院

	Recovery of secular deformation field of Mojave Shear Zone in Southern California from historical terrestrial and GPS measurements
	Liu, Shaozhuo ; Shen, Zheng-Kang ; Buergmann, Roland
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2015
关键词	Mojave East California Shear Zone secular deformation Landers and Hector Mine earthquakes postseismic deformation GPS triangulation trilateration SAN-ANDREAS FAULT 1999 HECTOR MINE TRANSIENT STRAIN ACCUMULATION EASTERN CALIFORNIA POSTSEISMIC DEFORMATION LANDERS EARTHQUAKE SLIP RATES OWENS-VALLEY LOWER CRUST BIG BEND
DOI	10.1002/2015JB011941
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.; National Natural Science Foundation of China [41090294]; NSF I/RD grant [EAR-1323052]; SCI(E); ARTICLE; zshen@ucla.edu; 5; 3965-3990; 120
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/420290]
专题	地球与空间科学学院
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]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2015.
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.
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 (2015).