Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL089419 |
Mechanical imaging of a volcano plumbing system from GNSS unsupervised modeling | |
Franç; ois Beauducel; Aline Peltier; Antoine Villié; Wiwit Suryanto | |
2020-08-21 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Identification of internal structures in an active volcano is mandatory to quantify the physical processes preceding eruptions. We propose a fully unsupervised Bayesian inversion method that uses the point compound dislocation model as a complex source of deformation, to dynamically identify the substructures activated during magma migration. We applied this method at Piton de la Fournaise. Using 7‐day moving trends of GNSS data preceding the June 2014 eruption, we compute a total of 15 inversion models of 2.5 million forward problems each, without a priori information. Obtained source shapes (dikes, prolate ellipsoids or pipes) show magma migration from 7‐8 km depth to the surface, drawing a mechanical ``tomography” of the magma pathway. Our results also suggest source geometries compatible with observed eruptive fissures and seismicity distribution. In case of finite magma volume involved in final dike injection, source volume estimates from this method allow forecasting volumes of erupted lava. |
领域 | 气候变化 |
URL | 查看原文 |
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/291139 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Franç,ois Beauducel,Aline Peltier,et al. Mechanical imaging of a volcano plumbing system from GNSS unsupervised modeling[J]. Geophysical Research Letters,2020. |
APA | Franç,ois Beauducel,Aline Peltier,Antoine Villié,&Wiwit Suryanto.(2020).Mechanical imaging of a volcano plumbing system from GNSS unsupervised modeling.Geophysical Research Letters. |
MLA | Franç,et al."Mechanical imaging of a volcano plumbing system from GNSS unsupervised modeling".Geophysical Research Letters (2020). |
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