| DOI: | 10.1016/j.gloplacha.2014.07.018
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| 论文题名: | Monitoring the evolution of Deception Island volcano from magnetic anomaly data (South Shetland Islands, Antarctica) |
| 作者: | Catalán M.; Martos Y.M.; Galindo-Zaldívar J.; Funaki M.
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| ISSN: | 0921-8395
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| 出版年: | 2014
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| 卷: | 123 | | 起始页码: | 199
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| 结束页码: | 212
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| 语种: | 英语
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| 英文关键词: | Antarctica
; Magnetic anomalies
; Secular variation
; Volcano monitoring
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| Scopus关键词: | Earthquakes
; Geological surveys
; Magnetism
; Seismology
; Surveys
; Volcanoes
; Antarctica
; Geophysical surveys
; Magnetic alteration
; Magnetic anomalies
; Secular variation
; South Shetland Islands
; Volcanic environment
; Volcano monitoring
; Magnetic levitation vehicles
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| 英文摘要: | Deception Island is a young and active volcano located in the south-western part of Bransfield back-arc basin. During the last twenty years the Royal Observatory of the Spanish Navy has carried out geophysical surveys in the area. In addition, an unmanned aerial vehicle flight was conducted in 2011 at 800 m height on the northern half of Deception Island. Analysing and comparing magnetic grids obtained in different periods and tie point readings allow us to detect temporal changes and isolate signals of volcanic origin. Magnetic survey cruises performed in Deception Island's inner bay (1988, 1999 and 2008), and the study of its outer area's magnetic anomaly changes, point to a period of high variations concentrated between December 1989 and December 1999 that may be related to the two main recent periods of seismic activity (1992 and January 1999). From December 1999 to December 2008, there were no significant changes in seismic activity; nevertheless, our data show some magnetic alterations, which might signal the slow progress of a volcanic environment towards equilibrium. Interpreting these magnetic changes called for the construction of several forward models. Additionally, we put forth this kind of study as a suitable, economical and easy method for monitoring an active volcanic system whenever it is possible to measure the magnetic field with accurate positioning, and if the external field components are removed correctly. © 2014 Elsevier B.V. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921306616&doi=10.1016%2fj.gloplacha.2014.07.018&partnerID=40&md5=0b78a1129e87d5c98f9b50950b661946
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/11301
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| Appears in Collections: | 全球变化的国际研究计划
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作者单位: | Real Instituto y Observatorio de la Armada, San Fernando, Cádiz, Spain
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| Recommended Citation: | |
Catalán M.,Martos Y.M.,Galindo-Zaldívar J.,et al. Monitoring the evolution of Deception Island volcano from magnetic anomaly data (South Shetland Islands, Antarctica)[J],2014-01-01,123.
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