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dc.contributor.authorXu, Wenbin
dc.contributor.authorXie, Lei
dc.contributor.authorAoki, Yosuke
dc.contributor.authorRivalta, Eleonora
dc.contributor.authorJonsson, Sigurjon
dc.date.accessioned2020-06-29T06:36:44Z
dc.date.available2020-06-29T06:36:44Z
dc.date.issued2020-06-25
dc.date.submitted2020-02-11
dc.identifier.citationXu, 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, e2020JB019562. doi:10.1029/2020jb019562
dc.identifier.issn2169-9313
dc.identifier.doi10.1029/2020jb019562
dc.identifier.urihttp://hdl.handle.net/10754/663907
dc.description.abstractErta Ale volcano erupted on 16 Jan. 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 Jan. 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.
dc.publisherAmerican Geophysical Union (AGU)
dc.relation.urlhttp://doi.wiley.com/10.1029/2020JB019562
dc.rightsArchived with thanks to Journal of Geophysical Research: Solid Earth
dc.titleVolcano-wide deformation after the 2017 Erta Ale dike intrusion, Ethiopia, observed with radar interferometry
dc.typeArticle
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Geophysical Research: Solid Earth
dc.rights.embargodate2020-12-25
dc.eprint.versionPost-print
dc.contributor.institutionSchool of Geosciences and Info-Physics; Central South University; Changsha Hunan P.R. China
dc.contributor.institutionKey Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring (Central South University), Ministry of Education; Changsha Hunan P.R. China
dc.contributor.institutionDepartment of Land Surveying and Geo-Informatics; The Hong Kong Polytechnic University; Hong Kong, China
dc.contributor.institutionEarthquake Research Institute; University of Tokyo; Tokyo Japan
dc.contributor.institutionGFZ German Research Centre for Geosciences; Potsdam Germany
dc.identifier.pagese2020JB019562
kaust.personJonsson, Sigurjon
dc.date.accepted2020-06-24


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