INDEPTH Wide-Angle Reflection Observation of P-Wave-to-S-Wave Conversion from Crustal Bright Spots in Tibet

Science
Y MakovskyF Meng

Abstract

Three-component wide-angle seismic data acquired in southern Tibet during Project INDEPTH show strong P-to-S converted reflections from reflectors that are aligned at a depth of approximately 15 kilometers beneath the northern Yadong-Gulu rift. These converted reflections are locally higher in amplitude than the corresponding P-wave reflections. Modeling of reflection mode conversion as a function of incidence angle indicates that this condition obtains for a reflector that is a solid over fluid interface; it is not typical of a solid-solid interface. The likely candidates for a fluid trapped within the crystalline crust of southern Tibet are granitic magma and water (brine).

References


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Citations

Feb 21, 2009·Science·Cheng CenJeremy Levy
Jun 10, 1997·Proceedings of the National Academy of Sciences of the United States of America·Y T Yu, J A Steitz
Feb 21, 1998·Proceedings of the National Academy of Sciences of the United States of America·M LongW Gilbert
Jul 8, 2009·Bulletin of Environmental Contamination and Toxicology·Qinghai Guo, Yanxin Wang
Aug 31, 2018·Nature Communications·Jinyu ChenGuillaume Richard
Aug 22, 1997·The Journal of Biological Chemistry·D G RyanW T Wolodko

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