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Attributes of Rotational Component of Mining Induced Seismic Events
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SYSNO ASEP 0430256 Document Type A - Abstract R&D Document Type Není vybrán druh dokumentu Title Attributes of Rotational Component of Mining Induced Seismic Events Author(s) Kaláb, Zdeněk (UGN-S) RID
Lednická, Markéta (UGN-S) RID, ORCID
Knejzlík, Jaromír (UGN-S)
Lyubushin, A. A. (RU)Number of authors 4 Source Title 5th International Colloquium on Geomechanics and Geophysics. GECO 2014, 5. - Ostrava : Ústav geoniky AV ČR, 2014 / Koníček P. ; Souček K. ; Heroldová N. - ISBN 978-80-86407-49-4
S. 15-16Number of pages 2 s. Publication form Print - P Action 5th International Colloquium on Geomechanics and Geophysics Event date 24.06.2014-27.06.2014 VEvent location Ostravice, Karolínka Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords mining induced seismicity ; rotational component ; coherence spectrum Subject RIV DC - Siesmology, Volcanology, Earth Structure Institutional support UGN-S - RVO:68145535 Annotation It is necessary for full description of the ground vibration, in addition to three translational components and strain, to consider also three rotational components [e.g., 1, 6]. Traditionally, only the translational components of the earthquake ground vibration and structural response have been recorded. Classical Russian pendulum seismometer S-5-S was modified for recording of the rotational components of ground motion [3]. This seismometer was used for mining induced seismic events monitoring in the Karviná region. Together, classical translation vibrations were recorded [2]. Measurement in near-source area is necessary because rotational components are quickly attenuated. Our first records of rotational component were obtained during the experimental seismic monitoring in 2010 and 2011 that confirmed rotational component existence also for the mining induced seismic events. The values of ground rotational motion (Rot) around the vertical axis recorded in the seismic station at Doubrava village (Karviná region) exceeded value of 1 mrad.s-1. Numerical study of measured rotational component attributes is presented in this paper. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2015
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