Počet záznamů: 1

Source mechanisms in the intense seismicity induced by fluids injection at the Soultz HDR site, Alsace, in 2003

  1. 1.
    0351656 - GFU-E 2011 RIV NL eng C - Konferenční příspěvek (zahraniční konf.)
    Horálek, Josef - Jechumtálová, Zuzana - Dorbath, L. - Šílený, Jan
    Source mechanisms in the intense seismicity induced by fluids injection at the Soultz HDR site, Alsace, in 2003.
    Barcelona '10. Conference Proceedings & Exhibitors' Catalogue. Houten: EAGE, 2010, s. 1679-1683. ISBN 978-90-73781-86-3.
    [EAGE Conference & exhibition incorporationg SPE EUROPEC 2010 /72./. Barcelona (ES), 14.06.2010-17.06.2010]
    Grant CEP: GA AV ČR IAA300120911; GA ČR GAP210/10/1728
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: source mechanisms * moment tensor * Soultz-sous-Forets site
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země

    We have inverted the peak amplitudes of direct P waves of 45 micro earthquakes with magnitudes of between M=1,4 and 2,9 which occurred during the 2003 massive fluid injection in the borehole of the Soultz site. The full moment tensor expression of the mechanism was applied. Surprisingly, the mechanisms of all are dominantly pure shears. The T-axes are fairly stable, being concentrated subhorizontally roughly in the EW direction. On the contrary, the P-axes are all-constrained varying in the NS direction from nearly vertical to nearly horizontal, which points to heterogeneous stress in the Soultz injected volume. This is in agreement with the stress pattern from in-situ measurements.
    Trvalý link: http://hdl.handle.net/11104/0191362