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Journal Article

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

Authors

Makovsky,  Yizhaq
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Klemperer,  Simon L.
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Ratschbacher,  Lothar
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Brown,  Larry D.
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Li,  Ming
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Zhao,  Wenjin
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

Meng,  Fanle
Publikationen aller GIPP-unterstützten Projekte, Deutsches GeoForschungsZentrum;

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Citation

Makovsky, Y., Klemperer, S. L., Ratschbacher, L., Brown, L. D., Li, M., Zhao, W., Meng, F. (1996): INDEPTH Wide-Angle Reflection Observation of P-Wave-to-S-Wave Conversion from Crustal Bright Spots in Tibet. - Science, 274, 5293, 1690-1691.
https://doi.org/10.1126/science.274.5293.1690


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_65476
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 ∼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).