Ruppert, NA, Rollins, C, Zhang, A et al. (4 more authors) (2018) Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake. Geophysical Research Letters, 45 (15). pp. 7533-7541. ISSN 0094-8276
Abstract
We combine aftershock relocations, source mechanisms, teleseismic P wave backprojection, and Global Positioning System data inversion to constrain complex faulting geometry of the 2018 MW 7.9 offshore Kodiak earthquake. Relocated aftershocks delineate several N‐S trends including a prominent 110‐km‐long segment, as well as broad NE‐SW trends. Global Positioning System modeling and backprojection indicate that the NE‐SW trending left‐lateral strike‐slip segments released most energy dominating far‐field crustal deformation and radiated wavefield. Backprojection infers fast E‐to‐W rupture propagations superimposed on a slower S‐to‐N migration. We propose a five‐segment model of the rupture that was partially driven by dynamic triggering.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | ©2018. American Geophysical Union. All Rights Reserved. This is the published version of a paper published in Geophysical Research Letters. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | offshore Kodiak earthquake; GPS analysis; teleseismic backprojection; triggered rupture; complex faulting |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Environment (Leeds) > School of Earth and Environment (Leeds) > Inst of Geophysics and Tectonics (IGT) (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Jan 2020 10:15 |
Last Modified: | 06 Jan 2020 10:15 |
Status: | Published |
Publisher: | American Geophysical Union |
Identification Number: | 10.1029/2018GL078931 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:155115 |