气候变化领域集成服务门户(CCPortal): Volcano-Wide Deformation After the 2017 Erta Ale Dike Intrusion, Ethiopia, Observed With Radar Interferometry

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DOI	10.1029/2020JB019562
	Volcano-Wide Deformation After the 2017 Erta Ale Dike Intrusion, Ethiopia, Observed With Radar Interferometry
	Xu W.; Xie L.; Aoki Y.; Rivalta E.; Jónsson S.
发表日期	2020
ISSN	21699313
卷号	125 期号:8
英文摘要	Erta Ale Volcano erupted on 16 January 2017 in a difficult-to-access terrain in the Erta Ale volcanic range in Ethiopia. Like many other rifting ridge volcanoes, little is known about the properties of the deep magma plumbing system. Here, we analyze interferometric synthetic aperture radar data from different satellites between late January 2017 and May 2019 to study the ground deformation after the start of the intrusion to infer the possible geometry and volume change of the magma reservoir that fed the eruption. We identified volcano-wide subsidence of up to 9 cm and horizontal contraction of up to ~5 cm that extend from Erta Ale to neighboring volcanoes. The modeling results suggest that an off-rift NE-SW elongated mid-crustal source is required to explain the observed volcano-wide deformation, but the depth is poorly constrained and the shape is complex. We suggest the presence of vertical interactions between stacked mid-crustal magma sources. Our study demonstrates that a considerable volume of melt could have been stored in mid-crustal magma reservoirs within the slow-spreading Erta Ale Ridge to facilitate recent volcanic activity. ©2020. The Authors.
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187717
作者单位	School of Geosciences and Info-Physics, Central South University, Changsha, China; Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring, Ministry of Education, Central South University, Changsha, China; Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Hong Kong; Earthquake Research Institute, University of Tokyo, Tokyo, Japan; GFZ German Research Centre for Geosciences, Potsdam, Germany; Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia
推荐引用方式 GB/T 7714	Xu W.,Xie L.,Aoki Y.,et al. Volcano-Wide Deformation After the 2017 Erta Ale Dike Intrusion, Ethiopia, Observed With Radar Interferometry[J],2020,125(8).
APA	Xu W.,Xie L.,Aoki Y.,Rivalta E.,&Jónsson S..(2020).Volcano-Wide Deformation After the 2017 Erta Ale Dike Intrusion, Ethiopia, Observed With Radar Interferometry.Journal of Geophysical Research: Solid Earth,125(8).
MLA	Xu W.,et al."Volcano-Wide Deformation After the 2017 Erta Ale Dike Intrusion, Ethiopia, Observed With Radar Interferometry".Journal of Geophysical Research: Solid Earth 125.8(2020).