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Advances in Geosciences An open-access journal for refereed proceedings and special publications
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Volume 40
Adv. Geosci., 40, 43–50, 2015
https://doi.org/10.5194/adgeo-40-43-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Adv. Geosci., 40, 43–50, 2015
https://doi.org/10.5194/adgeo-40-43-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

  10 Apr 2015

10 Apr 2015

Significant technical advances in broadband seismic stations in the Lesser Antilles

A. Anglade1, A. Lemarchand3, J.-M. Saurel2, V. Clouard2, M.-P. Bouin3,1, J.-B. De Chabalier3,1, S. Tait3, C. Brunet3, A. Nercessian3, F. Beauducel3, R. Robertson4, L. Lynch4, M. Higgins4, and J. Latchman4 A. Anglade et al.
  • 1Observatoire Volcanologique et Sismologique de Guadeloupe (OVSG/IPGP), Le Houëlmont 97113 Gourbeyre, Guadeloupe, French West Indies
  • 2Observatoire Volcanologique et Sismologique de Martinique (OVSM/IPGP), Morne des Cadets, 97250 Fonds Saint Denis, Martinique, French West Indies
  • 3Institut de Physique du Globe de Paris (IPGP), Paris, France
  • 4Seismic Research Centre (SRC/UWI), St. Augustine, Trinidad and Tobago, West Indies

Abstract. In the last few years, French West Indies observatories from the Institut de Physique du Globe de Paris (IPGP), in collaboration with The UWI Seismic Research Centre (SRC, University of West Indies), have modernized the Lesser Antilles Arc seismic and deformation monitoring network. 15 new, permanent stations have been installed that strengthen and expand its detection capabilities. The global network of the IPGP-SRC consortium is now composed of 20 modernized stations, all equipped with broadband seismometers, strong motion sensors, Global Positioning System (GPS) sensors and satellite communication for real-time data transfer. To enhance the sensitivity and reduce ambient noise, special efforts were made to improve the design of the seismic vault and the original Stuttgart shielding of the broadband seismometers (240 and 120s corner period). Tests were conducted for several months, involving different types of countermeasures, to achieve the highest performance level of the seismometers. GPS data, realtime and validated seismic data (only broadband) are now available from the IPGP data centre (http://centrededonnees.ipgp.fr/index.php?&lang=EN). This upgraded network feeds the Caribbean Tsunami Warning System supported by UNESCO and establishes a monitoring tool that produces high quality data for studying subduction and volcanic processes in the Lesser Antilles arc.

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Modernization of an arc scale seismic network in the Lesser Antilles.
Modernization of an arc scale seismic network in the Lesser Antilles.
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