DOI: 10.1007/s00531-013-0958-5
论文题名: SO2 degassing from Turrialba Volcano linked to seismic signatures during the period 2008–2012
作者: Conde V. ; Bredemeyer S. ; Duarte E. ; Pacheco J.F. ; Miranda S. ; Galle B. ; Hansteen T.H.
刊名: International Journal of Earth Sciences
出版年: 2014
卷: 103, 期: 7 起始页码: 1983
结束页码: 1998
语种: 英语
英文关键词: DOAS
; RSAM
; Seismic events
; Sulphur dioxide
Scopus关键词: acid rain
; atmospheric plume
; degassing
; flux measurement
; seismicity
; sulfur dioxide
; volcanic eruption
; volcanic gas
; Cartago
; Costa Rica
; Turrialba
英文摘要: In 1996, after 150 years of relative calm, Turrialba Volcano was reawakening. A visible plume and serious damage to surrounding vegetation due to acid rain are the most obvious signals. As part of the Network for Observation of Volcanic and Atmospheric Change project, four gas-monitoring stations were initially installed on the west flank of the volcano with the purpose of measuring sulphur dioxide emissions during this period of increased activity using the scanning-differential optical absorption spectroscopy technique. We present here the results of semicontinuous gas flux measurements over a period of 5 years (from 2008 to 2012), providing a novel data set that documents a relatively rapid increase in SO2 fluxes from around 350 t day−1 to around 4,000 t day−1 leading up to an eruptive period, followed by a gradual return to the former baseline values. Gas flux data were also compared with seismic data for selected periods of interest, providing insights into the link between degassing and seismicity. The most important result from this comparison is the identification of an inflexion point in the gas emissions followed by a clearly increasing trend in seismic activity, distinguishable 6 months prior to a phreatic eruptive event that occurred on 5 January 2010. This signal can be interpreted as a possible indicator of future eruptive events. Monitoring of SO2 thus complements seismic monitoring as a forecasting tool for eruptive events. Such monitoring is critical considering the proximity of Turrialba to the Central Valley, an area inhabited by more than 50 % of Costa Rica’s population. © 2013, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84908565876&doi=10.1007%2fs00531-013-0958-5&partnerID=40&md5=c6a25b94cbd43a5232f6d2935d0dc68b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70448
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: Department of Earth and Space Sciences, Chalmers University of Technology, Hörsalsvägen 11, Göteborg, Sweden; SFB 574 and GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstr. 1-3, Kiel, Germany; Observatorio Vulcanológico y Sismológico de Costa Rica (OVSICORI-UNA), Apdo 2346-3000, Heredia, Costa Rica; GEOMAR Helmholtz Centre for Ocean Research Kiel, Wischhofstr. 1-3, Kiel, Germany
Recommended Citation:
Conde V.,Bredemeyer S.,Duarte E.,et al. SO2 degassing from Turrialba Volcano linked to seismic signatures during the period 2008–2012[J]. International Journal of Earth Sciences,2014-01-01,103(7)