Real time monitoring of vertical ground deformations during eruptions at Piton de la Fournaise
| Autor: | J.-L. Cheminee, Philippe Kowalski, Philippe Taochy, Patrick Bachèlery, Jean-Paul Toutain, P.A. Blum, H. Delorme, Laurent Fontaine |
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| Přispěvatelé: | Observatoire Volcanologique du Piton de la Fournaise (OVPF), Institut de Physique du Globe de Paris, Université de La Réunion (UR), Institut de Physique du Globe de Paris (IPGP), Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de La Réunion (UR)-Université Paris Diderot - Paris 7 (UPD7)-IPG PARIS-Institut national des sciences de l'Univers (INSU - CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 1992 |
| Předmět: |
Dike
geography geography.geographical_feature_category Summit 010504 meteorology & atmospheric sciences Tiltmeter 010502 geochemistry & geophysics Geodesy 01 natural sciences Intrusion Geophysics Tilt (optics) Volcano 13. Climate action Observatory [SDU.STU.VO]Sciences of the Universe [physics]/Earth Sciences/Volcanology General Earth and Planetary Sciences Geology Seismology 0105 earth and related environmental sciences |
| Zdroj: | Geophysical Research Letters Geophysical Research Letters, American Geophysical Union, 1992, 19 (6), pp.553-556 |
| ISSN: | 0094-8276 1944-8007 |
| Popis: | International audience; Tilt changes related to a summit dike eraplacement at Piton de !a Fournaise volcano have been recorded by a 4 continuously recording electronic tiltmeters network during the April 18, 1990 eruption. The real-time processing of these data at the Observatory allows to calculate during the emplacement the relative position of the inflation center from the tilt vectors supplied by the nearby stations. Two main steps have been identified-an initial subvertical intrusion step, followed by a lateral dike migration from the summit cone. This monitoring allows to calculate a high average intrusion velocity of about 0.2 re. see-1 which can related to the highly fracturated pattern of the summit area. |
| Databáze: | OpenAIRE |
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