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Samples of Hot Dry Rock Soultz injection microearthquakes - mechanism using alternative source models
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SYSNO ASEP 0386914 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Samples of Hot Dry Rock Soultz injection microearthquakes - mechanism using alternative source models Tvůrce(i) Jechumtálová, Zuzana (GFU-E) ORCID, RID
Šílený, Jan (GFU-E) ORCID, RIDZdroj.dok. 74th EAGE conference & exhibition incorporating SPE EUROPEC 2012. - Houten : EAGE, 2012 - ISBN 978-90-73834-27-9 Rozsah stran d022/1-d022/5 Poč.str. 5 s. Forma vydání Nosič - C Akce EAGE Conference & exhibition incorporationg SPE EUROPEC 2010 /74./ Datum konání 04.06.2012-07.06.2012 Místo konání Copenhagen Země DK - Dánsko Typ akce EUR Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova geothermal reservoir ; induced microearthquakes ; comparison of MT and STI models Vědní obor RIV DC - Seismologie, vulkanologie a struktura Země CEP GAP210/10/1728 GA ČR - Grantová agentura ČR Institucionální podpora GFU-E - RVO:67985530 Anotace The geothermal reservoir at Soultz-sous-Forets is a valuable natural laboratory for understanding the mechanisms of the microearthquakes generated during stimulations and circulation tests. There is an ongoing effort towards the retrieval of the mechanisms though the indication of the type of fracturing of the rock massif still remains ambiguous. Recent studies indicate prevailingly shear slip but rarely there is also observed a non-shear pattern. Moment tensor - used today as a universal tool for description of the mechanism - captures general balanced dipole sources. However, for practice it may be too general as it may include also non-physical sources. Opening new fractures can be described in the first approximation by a tensile crack, optionally combined with a shear slip. We call this alternative model a shear-tensile/implosion source model. From the bulk of the seismicity recorded during stimulation in 2003, we concentrted on the first phase of the injection when only a single borehole in the site was stimulated. Pracoviště Geofyzikální ústav Kontakt Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028 Rok sběru 2013
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