SI-Hex: a new catalogue of instrumental seismicity for metropolitan France

• DOI: 10.2113/gssgfbull.186.1.3
• Publication Date: 2015-01-09T20:56:58Z
• Authors: Michel Cara; Yves Cansi; Antoine Schlupp; Pierre Arroucau; Nicole Béthoux; Eric Beucler; Stéphane Bruno; Marie Calvet; Sébastien Chevrot; Alexandra Deboissy; Bertrand Delouis; Marylin Denieul; Anne Deschamps; Cécile Doubre; Julien Fréchet; Stéphanie Godey; Olivia Golle; Marc Grunberg; Jocelyn Guilbert; Méric Haugmard; Liliane Jenatton; Sophie Lambotte; Delphine Leobal; Christophe Maron; Véronique Mendel; Sophie Merrer; Marie Macquet; Arnaud Mignan; Antoine Mocquet; Marc Nicolas; Julie Perrot; Bertrand Potin; Olivier Sanchez; Jean-Paul Santoire; Olivier Sèbe; Matthieu Sylvander; François Thouvenot; Jérôme Van Der Woerd; Katia Van Der Woerd
• Keywords: Massif

Abstract The aim of the SI-Hex project (acronym for « Sismicité Instrumentale de l’Hexagone ») is to provide a catalogue seismicity metropolitan France and French marine economic zone period 1962–2009 by taking into account contributions various seismological networks observatories from its neighbouring countries. has been launched jointly Bureau Central Sismologique Français (CNRS-University/BCSF) Laboratoire Détection et Géophysique (CEA-DAM/LDG). One main motivations end user with best possible information on location magnitude each earthquake. So far, due procedures in use observatories, different locations magnitudes earthquakes located were presenting large discrepancies. In 2014 version catalogue, 1D localizations hypocentres performed unique computational scheme covering whole constitute backbone (SI-Hex solutions). When available, they are replaced more precise made at LDG or, recent times, regional within: 1) Alps, 2) southernmost Alps Mediterranean domain including Corsica, 3) Pyrenees, 4) Armorican massif. Moment Mw systematically reported catalogue. They computed coda-wave analysis records most Mw>3.4 events, converted local ML smaller events. Finally, special attention paid question discrimination between natural artificial seismic events order produce direct hazard seismotectonic investigations. accessible web site www.franceseisme.fr contains 38,027 earthquake hypocentres, together their moment Mw.