Crustal Deformation Monitoring of Active Volcanic Rift Segments in the Reykjanes Peninsula, Iceland

HR: 10:20h
AN: G52A-01 [Abstracts]
TI: Crustal Deformation Monitoring of Active Volcanic Rift Segments in the Reykjanes Peninsula, Iceland
AU: * Durand, S
EM: stephane.durand@esgt.cnam.fr
AF: Ecole Supérieure des Géomètres et Topographes, 1 boulevard Pythagore, Le Mans, 72000 France
AU: Nicolas, J
EM: joelle.nicolas@esgt.cnam.fr
AF: Ecole Supérieure des Géomètres et Topographes, 1 boulevard Pythagore, Le Mans, 72000 France
AU: Cravoisier, S
EM: SOPHIE.CRAVOISIER_AUGE.ETU@univ-lemans.fr
AF: Laboratoire de Géodynamique des Rifts et des Marges Passives, Département de géologie UFR Sciences et Techniques Av. Olivier Messiaen, Le Mans, 72085 France
AB: Since several years, the ESGT reseach team is involved in crustal deformation studies. Since 2005, the laboratory is involved in a combined geodetic/seismologic study in the Reykjanes Peninsula, Iceland, in association with the LGRMP (Laboratoire de GＰdynamique des Rifts et des Marges Passives, Le Mans, France), the EOST (Ecole et Observatoire des Sciences de la Terre, Strasbourg, France), the IMO (Icelandic Meteorological Office, Iceland), and the NORDVULK (Nordic Volcanological Center, Iceland). The objectives are to characterize and to modelize on several time scales the fault segment activity an active volcanic rift. From April to August 2005, a first combined geodetic and seismologic campaign took place in order to show the relation between the volcanologic, the micro-seismologic activities and the crustal deformation of the rift segments. In addition to ~20 seismographs, five small geodetic networks (200 x 200 m) were set up along the rift and observed with tacheometers each week. In this contribution, we focus on the geodetic part of the campaign. We first present the geodetic networks and the reference frame setting used. Then, we descibe the processing strategy, show first results of the observed crustal deformations, and time series analysis.
DE: 1200 GEODESY AND GRAVITY
DE: 8004 Dynamics and mechanics of faulting (8118)
DE: 8419 Volcano monitoring (7280)
DE: 8494 Instruments and techniques
SC: Geodesy [G]
MN: Fall Meeting 2005