Pre-eruptive migration of earthquakes at the Piton de la Fournaise volcano (Reunion Island)

被引:128
作者
Battaglia, J
Ferrazzini, V
Staudacher, T
Aki, K
Cheminée, JL
机构
[1] Inst Phys Globe, Observ Volcanol Piton Fournaise, F-97418 La Plaine Des Cafres, France
[2] Inst Phys Globe, Observ Volcanol, F-75252 Paris, France
关键词
volcano seismicity; eruption; earthquake migration; Piton de la Fournaise;
D O I
10.1111/j.1365-246X.2005.02606.x
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
We present a study of the seismicity which preceded the 1998 March 9 eruption of the Piton de la Fournaise volcano. The eruption was preceded by a seismic crisis unusually long for this volcano which lasted for more than 35 hr and included about 3100 events with a maximum magnitude of 2.2. We located 583 volcano-tectonic (VT) events by manually picking their arrival times. The locations outline a monotonic upward migration of the hypocentres from about 5 km below sea level to the surface, leading to the onset of the eruption. This good correlation of the seismicity with eruptive activity suggests that the seismic migration was triggered by the ascent of magma toward the eruption site. The location of the earthquakes outlines an almost vertical conduit below the volcano providing new insights into the volcanic plumbing system.
引用
收藏
页码:549 / 558
页数:10
相关论文
共 43 条
[1]   Seismic monitoring and modeling of an active volcano for prediction [J].
Aki, K ;
Ferrazzini, V .
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH, 2000, 105 (B7) :16617-16640
[2]   The geochemical regimes of Piton de la Fournaise volcano (Reunion) during the last 530,000 years [J].
Albarede, F ;
Luais, B ;
Fitton, G ;
Semet, M ;
Kaminski, E ;
Upton, BGJ ;
Bachelery, P ;
Cheminee, JL .
JOURNAL OF PETROLOGY, 1997, 38 (02) :171-201
[3]   Temporal and spectral characteristics of seismicity observed at Popocatepetl volcano, central Mexico [J].
Arciniega-Ceballos, A ;
Valdes-Gonzalez, C ;
Dawson, P .
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 2000, 102 (3-4) :207-216
[4]   Soufriere Hills eruption, Montserrat, 1995-1997: Volcanic earthquake locations and fault plane solutions [J].
Aspinall, WP ;
Miller, AD ;
Lynch, LL ;
Latchman, JL ;
Stewart, RC ;
White, RA ;
Power, JA .
GEOPHYSICAL RESEARCH LETTERS, 1998, 25 (18) :3397-3400
[5]  
BACHELERY P, 1999, THESIS U REUNION ILE
[6]   Dynamic dyke propagation deduced from tilt variations preceding the March 9, 1998, eruption of the Piton de la Fournaise volcano [J].
Battaglia, J ;
Bachèlery, P .
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 2003, 120 (3-4) :289-310
[7]  
Battaglia J., 2001, THESIS U PARIS 7 PAR, V7
[8]   SEISMIC ACTIVITY ASSOCIATED WITH THE SEPTEMBER 1977 DEFLATION OF THE KRAFLA CENTRAL VOLCANO IN NORTHEASTERN ICELAND [J].
BRANDSDOTTIR, B ;
EINARSSON, P .
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 1979, 6 (3-4) :197-212
[9]   Long-period volcano seismicity: Its source and use in eruption forecasting [J].
Chouet, BA .
NATURE, 1996, 380 (6572) :309-316
[10]  
EINARSSON P, 1980, J GEOPHYS-Z GEOPHYS, V47, P160