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DOI | 10.1029/2018GL080580 |
Volcanic, Coseismic, and Seasonal Changes Detected at White Island (Whakaari) Volcano, New Zealand, Using Seismic Ambient Noise | |
Yates, A. S.1; Savage, M. K.1; Jolly, A. D.2; Caudron, C.3,4; Hamling, I. J.2 | |
2019-01-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:1页码:99-108 |
文章类型 | Article |
语种 | 英语 |
国家 | New Zealand; Belgium; France |
英文摘要 | Ambient noise interferometry is becoming increasingly popular for studying seismic velocity changes. Such changes contain information on the structural and mechanical properties of Earth systems. Application to monitoring, however, is complicated by the large number of processes capable of inducing crustal velocity changes. We demonstrate this at White Island volcano over a 10-year period containing multiple well-documented eruptions. Using individual seismic stations, we detect velocity perturbations that we ascribe to volcanic activity, large earthquakes, and seasonality. Distant seismic stations capture widespread nonvolcanic changes that are also present at the volcano. Comparison between velocity changes recorded by distant and local stations then allows us to distinguish volcanic phenomena from seasonality. Through this, we resolve distinct features in ambient noise-derived velocity changes that relate to volcanic unrest and a phreatic eruption, illustrating the strength of the approach. Plain Language Summary Detecting small changes in physical properties at volcanoes is important toward effectively forecasting volcanic eruptions. One approach is to monitor the speed of seismic waves at the Earth's surface, which are sensitive to changes in the rock they pass through. At volcanoes, such changes may manifest through subsurface pressure increases preceding eruptions. Correctly interpreting these changes, however, is complicated. Many other, nonvolcanic, processes are also capable of producing similar wave speed perturbations. At White Island volcano, New Zealand, we detect changes associated with volcanic activity, large earthquakes, and weather-related processes using seismometers located on the volcano. We demonstrate that volcanic and nonvolcanic features can be distinguished by comparing changes recorded at the volcano with those recorded at large distances, where volcanic changes are not expected to be observed. Through this, we resolve distinct differences that can be related to volcanic activity, illustrating the strength of this approach. |
英文关键词 | ambient noise volcanoes velocity changes seismic interferometry |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000456938600012 |
WOS关键词 | VELOCITY CHANGES ; ERUPTIONS ; STRESS ; FAULT ; EARTHQUAKES ; ANISOTROPY ; RESOLUTION ; PARKFIELD ; ACCURACY ; TREMOR |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27334 |
专题 | 气候变化 |
作者单位 | 1.Victoria Univ Wellington, Sch Geog Environm & Earth Sci, Wellington, New Zealand; 2.GNS Sci, Avalon, New Zealand; 3.Univ Ghent, Dept Geol, Campus Sterre, Ghent, Belgium; 4.Univ Savoie, ISTerre, IRD, CNRS, Le Bourget Du Lac, France |
推荐引用方式 GB/T 7714 | Yates, A. S.,Savage, M. K.,Jolly, A. D.,et al. Volcanic, Coseismic, and Seasonal Changes Detected at White Island (Whakaari) Volcano, New Zealand, Using Seismic Ambient Noise[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(1):99-108. |
APA | Yates, A. S.,Savage, M. K.,Jolly, A. D.,Caudron, C.,&Hamling, I. J..(2019).Volcanic, Coseismic, and Seasonal Changes Detected at White Island (Whakaari) Volcano, New Zealand, Using Seismic Ambient Noise.GEOPHYSICAL RESEARCH LETTERS,46(1),99-108. |
MLA | Yates, A. S.,et al."Volcanic, Coseismic, and Seasonal Changes Detected at White Island (Whakaari) Volcano, New Zealand, Using Seismic Ambient Noise".GEOPHYSICAL RESEARCH LETTERS 46.1(2019):99-108. |
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