Small scale earthquake mechanisms induced by fluid injection at the enhanced geothermal system reservoir Soultz (Alsace) in 2003 using alternative source models

0433157 - GFÚ 2015 RIV CH eng J - Journal Article
Šílený, Jan - Jechumtálová, Zuzana - Dorbath, C.
Small scale earthquake mechanisms induced by fluid injection at the enhanced geothermal system reservoir Soultz (Alsace) in 2003 using alternative source models.
Pure and Applied Geophysics. Roč. 171, č. 10 (2014), s. 2783-2804. ISSN 0033-4553. E-ISSN 1420-9136
R&D Projects: GA ČR GAP210/10/1728; GA ČR GAP210/12/2235
Institutional support: RVO:67985530
Keywords : non-shear component * Soultz-sous-Forets Alsace * HDR site * seismic events
Subject RIV: DC - Siesmology, Volcanology, Earth Structure
Impact factor: 1.618, year: 2014

The geothermal reservoir at Soultz-sous-Forets is a valuable natural laboratory for understanding the mechanisms of microearthquakes generated during stimulations and circulation tests. An ongoing effort currently exists regarding the retrieval of mechanisms aimed to indicate the type of fracturing of the rock massif. As a default, a moment tensor description has been applied. Nevertheless, the retrieval of the mode of fracturing still remains ambiguous. Recent studies indicate a prevailing shear slip but, rarely, a non-shear pattern has also been observed. The moment tensor, used today as a universal tool for descriptions of the mechanism, captures general balanced dipole sources.The geothermal reservoir at Soultz-sous-Forets is a valuable natural laboratory for understanding the mechanisms of microearthquakes generated during stimulations and circulation tests. An ongoing effort currently exists regarding the retrieval of mechanisms aimed to indicate the type of fracturing of the rock massif. As a default, a moment tensor description has been applied.
Permanent Link: http://hdl.handle.net/11104/0237411