Imprimer

GEOSCOPE - Martin VALLEE

Type

TS-ANO2

Coordination

IPGP Marc CHAUSSIDON vallee@ipgp.fr

Partenaires

EOST Frédéric MASSON dimitri.zigone@unistra.fr

Description

The GEOSCOPE observatory is a global seismological network created in 1982 to respond to the challenge of instrumenting isolated sites all around the world. It currently runs 34 seismic stations, all of which are now equipped to provide (near) real-time data. GEOSCOPE's missions are to provide validated, high quality broadband seismic data to the French and international seismological communities. The GEOSCOPE observatory is primarily dedicated to research and its data are used for studies of Earth structure and dynamics, seismic sources, time dependent seismology and environmental seismology. GEOSCOPE also provides real-time data to earthquake detection and tsunami warning centers worldwide. About 1300 articles based on GEOSCOPE observatory data have been collected since 1982, and around 40 publications per year explicitly cite the use of GEOSCOPE data. Our project in the short and long term is to maintain this quality of the observations and to increase slightly the number of stations. For example, in 2016 and 2017, we installed a new station in Wallis and Futuna (FUTU), re-installed two broadband sensors in a very good site of Western China (WUS), and fully re-installed the site of FOMA in Madagascar. Evolution of the analyses in seismology in the last years has followed two important directions: (1) using increasing amounts of data, both in space in time (for example for noise analyses) and (2) being more and more reactive to the earthquakes; and in both cases with a special interest for the places where high-quality station distribution is sparse. GEOSCOPE network, thanks to its station distribution covering places where almost no other instrument exists (for example South Indian Ocean), with most stations having recorded continuously for more than 20 years, and with all the data now transmitted in real time, is a very important component of our ability to monitor the global Earth dynamics.

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Dernière validation de la BDD : jeudi 5 mai 2022