First results of the CRLN seismic network in the western Corinth Rift: evidence for old-fault reactivation

Autor: Hélène Lyon-Caen, K. Makropoulos, Panayotis Papadimitriou, Pascal Bernard, F. Pacchiani, G. Patau, Anne Deschamps
Přispěvatelé: Géoazur (GEOAZUR 6526), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2004
Předmět:
Zdroj: Comptes Rendus Géoscience
Comptes Rendus Géoscience, Elsevier, 2004, 336 (4-5), pp.343-351. ⟨10.1016/j.crte.2003.12.004⟩
Comptes Rendus Géoscience, 2004, 336 (4-5), pp.343-351. ⟨10.1016/j.crte.2003.12.004⟩
DOI: 10.1016/j.crte.2003.12.004⟩
Popis: The 12 stations Corinth Rift Laboratory Seismological Network (CRLNET) aims at monitoring the seismicity (Ml>1) in the CRL area and at constraining the geometry of active structures at depth. Two years of microseismicity (2000–2001) recorded by the CRLNET in the Aigion area shows: (1) background seismicity inside the Corinth rift at depth of 4.5–11 km, deepening towards the north and no activity in the upper 4 km of the crust – this seismicity is not clearly related to major faults observed at the surface –; (2) a swarm, 6 km south of the city of Aigion, associated with the Mw=4.2, 8 April 2001 earthquake. This earthquake occurred at 6 km depth, on a SW–NE oriented fault dipping 40° to the northwest and corresponds to normal faulting with a right lateral component of slip. It likely occurred on an old structure reactivated in the present stress field. To cite this article: H. Lyon-Caen et al., C. R. Geoscience 336 (2004).
Databáze: OpenAIRE