globalchange  > 科学计划与规划
DOI: 10.1002/2016GL069554
论文题名:
Three-dimensional attenuation model of Sierra Negra Volcano, Galápagos Archipelago
作者: Rodd R.L.; Lees J.M.; Tepp G.
刊名: Geophysical Research Letters
ISSN: 0094-9593
EISSN: 1944-9324
出版年: 2016
卷: 43, 期:12
起始页码: 6259
结束页码: 6266
语种: 英语
英文关键词: attenuation ; Galápagos ; seismic tomography ; Sierra Negra ; spectral decay ; volcano
Scopus关键词: Sea level ; Seismic waves ; Seismology ; attenuation ; Attenuation model ; P waves ; Seismic tomography ; Shallow magma system ; Sierra Negra ; Spectral decay ; Tomographic methods ; Volcanoes
英文摘要: The shallow magma system beneath Sierra Negra was imaged using attenuation tomographic methods. The t∗ spectral decay method for P wave phases was used to highlight regions of high Q-1 p which suggest the presence of magma melt. High-Q-1 p anomalies ranging from 0.005 to 0.04 are concentrated below the caldera from 0.5 to 10.5 km depths. Attenuation is sensitive to temperature and fluid presence; thus, this high attenuation is interpreted as possible zones of magma accumulation. An imaged shallow body is consistent with geodetic studies on caldera deformation that modeled a magma sill or flattopped diapir of unknown thickness at ∼1 km depth below sea level. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84983268884&doi=10.1002%2f2016GL069554&partnerID=40&md5=3348531ebec51a4a840d3a65b9b899b9
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10556
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Department of Geological Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States

Recommended Citation:
Rodd R.L.,Lees J.M.,Tepp G.. Three-dimensional attenuation model of Sierra Negra Volcano, Galápagos Archipelago[J]. Geophysical Research Letters,2016-01-01,43(12).
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