Professor Ian Shennan ian.shennan@durham.ac.uk
Emeritus Professor
Professor Ian Shennan ian.shennan@durham.ac.uk
Emeritus Professor
Dr Martin Brader m.d.brader@durham.ac.uk
PGR Student Doctor of Philosophy
Natasha L.M. Barlow
Frank P. Davies
Chris Longley
Neil Tunstall neil.tunstall@durham.ac.uk
Senior Geotechnical Experimental Officer
We report stratigraphic evidence of land-level changes along the eastern portion of the Alaska-Aleutian megathrust. Four marshes on Shuyak Island record variable amounts of coseismic deformation during four pre-20th century earthquakes. We combine these data with paleoseismic evidence from across the Kodiak, Kenai and Prince William Sound segments of the megathrust. These indicate that in the last 2000 years, AD 1964 was the only one to rupture all three segments simultaneously and generate a Mw 9.2 earthquake. The Kodiak segment ruptured independently on four further occasions with magnitudes > Mw 8.0; in AD 1788 and c.400 (440–320) BP, and independently but around the times of great earthquakes in the Prince William Sound segment c.850 and c.1500 BP.
Shennan, I., Brader, M. D., Barlow, N. L., Davies, F. P., Longley, C., & Tunstall, N. (2018). Late Holocene paleoseismology of Shuyak Island, Alaska. Quaternary Science Reviews, 201, 380-395. https://doi.org/10.1016/j.quascirev.2018.10.028
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 19, 2018 |
Online Publication Date | Oct 29, 2018 |
Publication Date | Dec 1, 2018 |
Deposit Date | Oct 12, 2018 |
Publicly Available Date | Oct 30, 2018 |
Journal | Quaternary Science Reviews |
Print ISSN | 0277-3791 |
Electronic ISSN | 1873-457X |
Publisher | Elsevier |
Peer Reviewed | Peer Reviewed |
Volume | 201 |
Pages | 380-395 |
DOI | https://doi.org/10.1016/j.quascirev.2018.10.028 |
Public URL | https://durham-repository.worktribe.com/output/1316666 |
Published Journal Article
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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/
Copyright Statement
© 2018 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license
(http://creativecommons.org/licenses/by/4.0/).
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