Late Holocene paleoseismology of Shuyak Island, Alaska.
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 th...
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Online Access: | http://dro.dur.ac.uk/26643/ http://dro.dur.ac.uk/26643/1/26643.pdf https://doi.org/10.1016/j.quascirev.2018.10.028 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:26643 2023-05-15T17:04:36+02:00 Late Holocene paleoseismology of Shuyak Island, Alaska. Shennan, Ian Brader, Martin D. Barlow, Natasha L.M. Davies, Frank P. Longley, Chris Tunstall, Neil 2018-12-01 application/pdf http://dro.dur.ac.uk/26643/ http://dro.dur.ac.uk/26643/1/26643.pdf https://doi.org/10.1016/j.quascirev.2018.10.028 unknown Elsevier dro:26643 issn:0277-3791 doi:10.1016/j.quascirev.2018.10.028 http://dro.dur.ac.uk/26643/ https://doi.org/10.1016/j.quascirev.2018.10.028 http://dro.dur.ac.uk/26643/1/26643.pdf © 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/). CC-BY Quaternary science reviews, 2018, Vol.201, pp.380-395 [Peer Reviewed Journal] Article PeerReviewed 2018 ftunivdurham https://doi.org/10.1016/j.quascirev.2018.10.028 2020-06-04T22:25:09Z 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. Article in Journal/Newspaper Kodiak Alaska Durham University: Durham Research Online Quaternary Science Reviews 201 380 395 |
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Open Polar |
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Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Shennan, Ian Brader, Martin D. Barlow, Natasha L.M. Davies, Frank P. Longley, Chris Tunstall, Neil |
spellingShingle |
Shennan, Ian Brader, Martin D. Barlow, Natasha L.M. Davies, Frank P. Longley, Chris Tunstall, Neil Late Holocene paleoseismology of Shuyak Island, Alaska. |
author_facet |
Shennan, Ian Brader, Martin D. Barlow, Natasha L.M. Davies, Frank P. Longley, Chris Tunstall, Neil |
author_sort |
Shennan, Ian |
title |
Late Holocene paleoseismology of Shuyak Island, Alaska. |
title_short |
Late Holocene paleoseismology of Shuyak Island, Alaska. |
title_full |
Late Holocene paleoseismology of Shuyak Island, Alaska. |
title_fullStr |
Late Holocene paleoseismology of Shuyak Island, Alaska. |
title_full_unstemmed |
Late Holocene paleoseismology of Shuyak Island, Alaska. |
title_sort |
late holocene paleoseismology of shuyak island, alaska. |
publisher |
Elsevier |
publishDate |
2018 |
url |
http://dro.dur.ac.uk/26643/ http://dro.dur.ac.uk/26643/1/26643.pdf https://doi.org/10.1016/j.quascirev.2018.10.028 |
genre |
Kodiak Alaska |
genre_facet |
Kodiak Alaska |
op_source |
Quaternary science reviews, 2018, Vol.201, pp.380-395 [Peer Reviewed Journal] |
op_relation |
dro:26643 issn:0277-3791 doi:10.1016/j.quascirev.2018.10.028 http://dro.dur.ac.uk/26643/ https://doi.org/10.1016/j.quascirev.2018.10.028 http://dro.dur.ac.uk/26643/1/26643.pdf |
op_rights |
© 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/). |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1016/j.quascirev.2018.10.028 |
container_title |
Quaternary Science Reviews |
container_volume |
201 |
container_start_page |
380 |
op_container_end_page |
395 |
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1766058890796990464 |