Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake

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‐...

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Bibliographic Details
Main Authors: Ruppert, NA, Rollins, C, Zhang, A, Meng, L, Holtkamp, SG, West, ME, Freymueller, JT
Format: Article in Journal/Newspaper
Language:English
Published: American Geophysical Union 2018
Subjects:
Kodiak
Alaska
Online Access:https://eprints.whiterose.ac.uk/155115/
https://eprints.whiterose.ac.uk/155115/1/2018GL078931.pdf
id ftleedsuniv:oai:eprints.whiterose.ac.uk:155115
record_format openpolar
spelling ftleedsuniv:oai:eprints.whiterose.ac.uk:155115 2023-05-15T17:04:36+02:00 Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake Ruppert, NA Rollins, C Zhang, A Meng, L Holtkamp, SG West, ME Freymueller, JT 2018-08-16 text https://eprints.whiterose.ac.uk/155115/ https://eprints.whiterose.ac.uk/155115/1/2018GL078931.pdf en eng American Geophysical Union https://eprints.whiterose.ac.uk/155115/1/2018GL078931.pdf 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 Article NonPeerReviewed 2018 ftleedsuniv 2023-01-30T22:25:32Z 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. Article in Journal/Newspaper Kodiak Alaska White Rose Research Online (Universities of Leeds, Sheffield & York)
institution Open Polar
collection White Rose Research Online (Universities of Leeds, Sheffield & York)
op_collection_id ftleedsuniv
language English
description 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.
format Article in Journal/Newspaper
author Ruppert, NA
Rollins, C
Zhang, A
Meng, L
Holtkamp, SG
West, ME
Freymueller, JT
spellingShingle Ruppert, NA
Rollins, C
Zhang, A
Meng, L
Holtkamp, SG
West, ME
Freymueller, JT
Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake
author_facet Ruppert, NA
Rollins, C
Zhang, A
Meng, L
Holtkamp, SG
West, ME
Freymueller, JT
author_sort Ruppert, NA
title Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake
title_short Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake
title_full Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake
title_fullStr Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake
title_full_unstemmed Complex Faulting and Triggered Rupture During the 2018 MW 7.9 Offshore Kodiak, Alaska, Earthquake
title_sort complex faulting and triggered rupture during the 2018 mw 7.9 offshore kodiak, alaska, earthquake
publisher American Geophysical Union
publishDate 2018
url https://eprints.whiterose.ac.uk/155115/
https://eprints.whiterose.ac.uk/155115/1/2018GL078931.pdf
genre Kodiak
Alaska
genre_facet Kodiak
Alaska
op_relation https://eprints.whiterose.ac.uk/155115/1/2018GL078931.pdf
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
_version_ 1766058909424943104

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