DOI: 10.1007/s00531-012-0840-x
Scopus记录号: 2-s2.0-84908565290
论文题名: Comparison of seismic activity for Llaima and Villarrica volcanoes prior to and after the Maule 2010 earthquake
作者: Mora-Stock C. ; Thorwart M. ; Wunderlich T. ; Bredemeyer S. ; Hansteen T.H. ; Rabbel W.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 103, 期: 7 起始页码: 2015
结束页码: 2028
语种: 英语
英文关键词: Chile
; Llaima volcano
; Maule earthquake
; Villarrica volcano
; Volcano seismicity
Scopus关键词: Chile earthquake 2010
; degassing
; earthquake catalogue
; seismicity
; seismotectonics
; volcanic earthquake
; volcanic eruption
; Araucania
; Llaima
; Southern Volcanic Zone
; Villarrica
英文摘要: Llaima and Villarrica are two of the most active volcanoes in the Chilean Southern Volcanic Zone and presently show contrasting types of activity. Llaima is a closed vent edifice with fumarolic activity, while Villarrica has an open vent with a lava lake, continuous degassing and tremor activity. This study is focused on characterizing the relationships between volcanic and seismic activity in the months before and after the 2010 M8.8 Maule earthquake, which was located in NNW direction from the volcanoes. Time series for tremors, long-period and volcano-tectonic events were obtained from the catalogue of the Volcanic Observatory of the Southern Andes (OVDAS) and from the SFB 574 temporary volcanic network. An increase in the amount of tremor activity, long-period events and degassing rates was observed at Villarrica weeks before the mainshock and continued at a high level also after it. This increase in activity is interpreted to be caused by enhanced magma influx at depth and may be unrelated to the Maule event. In Llaima, an increase in the volcano-tectonic activity was observed directly after the earthquake. The simultaneous post-earthquake activity at both volcanoes is consistent with a structural adjustment response. Since this enhanced activity lasted for more than a year, we suggest that it is related to a medium-term change in the static stress. Thus, the Maule earthquake may have affected both volcanoes, but did not trigger eruptions, from which we assume that none of the volcanoes were in a critical state. © 2012, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908565290&doi=10.1007%2fs00531-012-0840-x&partnerID=40&md5=3e3a5958437cee3be15f518aec8f67d4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70398
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Institut für Geowissenschaften, Christian-Albrechts-Universität, Otto-Hahn-Platz 1, Kiel, Germany; Helmholtz-Zentrum für Ozeanforschung Kiel (GEOMAR), Wischhofstr. 1-3, Kiel, Germany
Recommended Citation:
Mora-Stock C.,Thorwart M.,Wunderlich T.,et al. Comparison of seismic activity for Llaima and Villarrica volcanoes prior to and after the Maule 2010 earthquake[J]. International Journal of Earth Sciences,2014-01-01,103(7)