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TitreReal-time seismic monitoring in Haiti and some applications
AuteurBent, A L; Cassidy, J; Prépetit, C; Lamontagne, M; Ulysse, S
SourceSeismological Research Letters vol. 89, no. 2A, 2018 p. 407-415, https://doi.org/10.1785/0220170176
Année2018
Séries alt.Ressources naturelles Canada, Contribution externe 20170181
ÉditeurSeismological Society of America
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1785/0220170176
Mediapapier; en ligne; numérique
Formatspdf
Lat/Long OENS -74.5000 -72.0000 19.0000 17.5000
Sujetssecousses séismiques; études séismiques; réseau de mesure; tectonique; Santé et sécurité
Illustrationslocation maps; seismograms; plots; photographs; tables
ProgrammeRisques géologique du tremblement de terre, Géoscience pour la sécurité publique
Diffusé2018 02 14
Résumé(disponible en anglais seulement)
In the aftermath of the magnitude 7.0 earthquake that devastated much of southern Haiti on 12 January 2010, the Geological Survey of Canada (GSC) along with the U.S. Geological Survey (USGS) and Géoazur installed seismograph and strong-motion stations in Haiti. Prior to the earthquake, there had been almost no instrumental monitoring of Haiti's earthquakes. The three GSC stations consisting of collocated weak- and strong-motion instruments comprised the first real-time seismic network in Haiti. These stations were initially used primarily for aftershock monitoring but also contributed data to subsequent research projects as well as to the Caribbean Tsunami Warning System. They are still operational albeit with varying degrees of reliability. In this article, we discuss the station deployment, data access, and some of the science outputs from their data. In particular, aftershock locations, site response, velocity models, and attenuation are discussed. Combined with the data from the other deployments, they contributed to a much better understanding of the seismicity and seismotectonics of Haiti. Finally, in the years subsequent to 2010, Haiti has established its own network consisting of two seismograph and five accelerograph stations with real-time data availability and three additional non-real-time strong-motion stations all of which, combined with the establishment of the Unité Technique de Sismologie, have led to improved seismic monitoring.
Résumé(Résumé en langage clair et simple, non publié)
Avant l'apparition du tremblement de terre catastrophe de magnitude 7.0 en Haïti en 2010, il y avait eu peu ou pas de surveillance sismique du pays. Au lendemain du tremblement de terre de 2010, RNCan a installé trois stations de sismographe en Haïti collocées avec des instruments à movement fort. Ces stations, qui fonctionnent encore, comprennent le premier réseau sismographe en temps réel en Haïti. Le document traite du déploiement des stations, des etudes de répliques en utilisant les données de ces stations ainsi que leurs conditions de site et la structure de la Terre sous celles-ci. Des améliorations ultérieures apportées au surveillance sismique en Haïti sont également discutées.
GEOSCAN ID305892