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3D distribution of P-wave velocity and attenuation in antigorite serpentinite
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SYSNO ASEP 0481259 Document Type C - Proceedings Paper (int. conf.) R&D Document Type The record was not marked in the RIV Title 3D distribution of P-wave velocity and attenuation in antigorite serpentinite Author(s) Svitek, Tomáš (GLU-S) SAI, RID
Lokajíček, Tomáš (GLU-S) RID, SAI, ORCID
Petružálek, Matěj (GLU-S) RID, SAI, ORCID
Vavryčuk, Václav (GFU-E) ORCID, RIDArticle number 17-829 Source Title 51st US Rock Mechanics/Geomechanics Symposium. - s. l. : American Rock Mechanics Association, 2017 - ISBN N Number of pages 7 s. Publication form Print - P Action US Rock Mechanics/Geomechanics Symposium /51./ Event date 25.06.2017 - 28.06.2017 VEvent location San Francisco Country US - United States Event type WRD Language eng - English Country US - United States Keywords serpentinite ; P-wawe velocity ; anisotropy Subject RIV DB - Geology ; Mineralogy R&D Projects GA13-13967S GA ČR - Czech Science Foundation (CSF) GA16-03950S GA ČR - Czech Science Foundation (CSF) Institutional support GLU-S - RVO:67985831 ; GFU-E - RVO:67985530 Annotation Seismic velocity and attenuation anisotropy is an important property of many crustal and mantle rocks. The velocity anisotropy characterizes a directionally dependent propagation velocity of seismic waves, whereas attenuation anisotropy controls directionally dependent dissipation of seismic energy. We present a detailed study on the pressure dependence of P-wave velocities and amplitudes on a spherical sample of antigorite serpentinite from Val Malenco, Northern Italy. Measurements were done at room temperature and hydrostatic pressures up to 400 MPa in a pressure vessel with oil as a pressure medium. The transducer/sample assembly allows simultaneous velocity and amplitude measurements on the spherical sample in 132 independent directions. Three significant directions of the foliated sample were selected to study changes of the directional dependence (anisotropy) of velocity, amplitude and Q-factor with increasing pressure. Remarkable differences are observed in the changes of velocity and attenuation anisotropy as pressure is increased. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Tel.: 226 800 273 Year of Publishing 2018
Number of the records: 1