HR: 0800h
AN: V11A-1399    [Abstracts]
TI: Multiple Geophysical Observations by a newly developed multi-component borehole instrument at the Continental Deep Drilling Site of the CCSD, Donghai, China
AU: * Xu, J
EM: xujiren@ccsd.org.cn
AF: Jiren Xu, Beiwanzhuang Road 26, Beijing, 100037 China
AU: Zhao, Z
EM: zhaozhixin@ccsd.org
AF: Zhixin Zhao, Beiwanzhuang Road 26, Beijing, 100037 China
AU: Ishii, H
AF: Hiroshi Ishii, 1-63 Yamanouchi, Akeyocho,, Mizunami, Gif 509-6132 Japan
AU: Yamauchi, T
AF: Tsuneo Yamauchi, Furo-cho, Chikusa-ku,, Nagoya, 464-8602 Japan
AB: Multiple Geophysical Observations by a newly developed multi-component borehole instrument at the Continental Deep Drilling Site of the CCSD, Donghai, China Jiren Xu1 (+86-10-68992879; xujiren@ccsd.org.cn) Zhixin Zhao1 (+86-10-68999734; zhaozhixin@ccsd.org.cn) Hiroshi Ishii2 (+81-0572-67-3105; ishii@tries.gr.jp Tsuneo Yamauchi3 (+81-052-789-3045; yamauchi@seis.nagoya-u.ac.jp) 1 Institute of Geology, Chinese Academy of Geological Sciences, China 2 Tono Research Institute of Earthquake Science (TRIES), Japan 3 Graduate School of Environmental Studies, Nagoya University, Japan The Chinese Continental Scientific Drilling (CCSD) site is located in the Donghai area of the Dabie-Sulu belt, which is the largest UHPM belt in the world. The drilling of the main borehole with 5000m will finish in next year. Three satellite boreholes, PP1, PP2 and PP3 were drilled and various surveys have been performed in the Donghai area about 6 years ago. We are going to install a newly developed Multi-component Instrument for borehole observations in main hole near the large Tanlu fault, and establish a long-term underground observation laboratory, which is the first noiseless one in China. The seismic activity and various geophysical fields, viz. strain, geomagnetism, geothermy, tilt, pore pressure etc. will be investigated. Data from the underground laboratory will be open to scientific, engineering and public services. We will measure the initial stress in various depths of the borehole by overcoring method using a new developed wireless intelligent type strainmeter of in-situ stress. Establishing a long-term noiseless underground observation laboratory at deep borehole and investigating crustal movement in East China are important for observing the physical conditions of the earth­_s interior and solving many social problems, such as resources, disasters and environment. Multiple geophysical observations and the study in deep borehole will speed up and develop the study on tectonics and geodynamics. The accomplishment of this project may enrich the knowledge on the geophysics and geology.
DE: 8102 Continental contractional orogenic belts
DE: 8164 Stresses--crust and lithosphere
DE: 7209 Earthquake dynamics and mechanics
SC: Volcanology, Geochemistry, Petrology [V]
MN: 2004 AGU Fall Meeting