HR: 0800h
AN: G21C-0665    [Abstracts]
TI: An Introduction to the Tibet cGPS pilot project: TigiCAS
AU: * Zhang, Z
EM: zhangzhihui1983@sohu.com
AF: Institute of Tibetan Plateau Research,CAS, 18 Shuang Qing Rd, Beijing, 100085, China
AU: Liu, J
EM: liu-zeng@itpcas.ac.cn
AF: Institute of Tibetan Plateau Research,CAS, 18 Shuang Qing Rd, Beijing, 100085, China
AU: Galetzka, J
EM: galetzka@mac.com
AF: Department of Geological and Planetary Sciences, 1200 E. California Blvd, Pasadena, 91125, United States
AU: Avouac, J
EM: avouac@gps.caltech.edu
AF: Department of Geological and Planetary Sciences, 1200 E. California Blvd, Pasadena, 91125, United States
AU: Tapponnier, P
EM: tappon@ipgp.jussieu.fr
AF: Institut de Physique du Globe, 4 place Jussieu, Paris, 75005, France
AU: Zeng, L
EM: lzeng@ccsd.cn
AF: Institute of Geology, Chinese Academy of Geological Sciences, 26 Bai Wan Zhuang Rd, Beijing, 100037, China
AU: Gan, W
EM: wjgan@gps.gov.cn
AF: Institute of Geology, China Earthquake Administration, Qijiahuozi St. Chaoyang District, Beijing, 100029, China
AU: Gan, W
EM: wjgan@gps.gov.cn
AF: National Earthquake Infrastructure Service, China Earthquake Administration, 63 Fuxiong Rd, Beijing, 100036, China
AU: Shen, Z
EM: zshen@ies.ac.cn
AF: Institute of Geology, China Earthquake Administration, Qijiahuozi St. Chaoyang District, Beijing, 100029, China
AU: Wang, M
EM: mwang@gps.gov.cn
AF: Institute of Earthquake Sciences, China Earthquake Administration, 63 Fuxing Rd, Beijing, 100036, China
AB: The convergence between India and Eurasia is the¡¡prototype of continental collision in action. Compared¡¡to geological history and fault kinematics studies, the present-day, regional pattern of strain-partitioning¡¡is still inadequately known. Among limited geodetic¡¡efforts in the past decade or two, most have been focused¡¡on refining measurements of the current crustal¡¡shortening rate across the Himalaya. The vast region¡¡immediately to the north is sparsely instrumented, with only one continuous GPS station (Lhasa) within¡¡the plateau proper. Campaign stations are few and¡¡ill-positioned, mostly along major roads, providing¡¡poor constraints on present-day slip-rates on individual¡¡active faults. The extant GPS network configuration is thus still insufficient to discriminate between block vs continuum deformation. In November 2006, the¡¡Chinese Academy of Sciences led a pilot program and¡¡installed 6 continuous GPS stations in southern Tibet, crossing the NS-trending normal fault systems and¡¡complementing the Nepal cGPS profiles. We present¡¡here the new sites, preliminary data processing results, and the spatial relationship with ongoing or planned¡¡continuous GPS sites from a couple of other projects. Together with such projects, TigiCAS will provide¡¡a substantial increase in geodetic data in the¡¡Himalayan-Tibet convergent belt in the next few¡¡years, and lead to a better understanding of¡¡contemporary deformation of the region.
DE: 1209 Tectonic deformation (6924)
DE: 1240 Satellite geodesy: results (6929, 7215, 7230, 7240)
DE: 8104 Continental margins: convergent
SC: Geodesy [G]
MN: 2007 Fall Meeting