Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean
Warming of high northern latitudes in the Pliocene (5.33–2.58 Myr ago) has been linked to the closure of the Central American Seaway and intensification of North Atlantic Deep Water. Subsequent cooling in the late Pliocene may be related to the effects of freshwater input from the Arctic Ocean via t...
Published in: | Nature Communications |
---|---|
Main Authors: | , , , , , , , , |
Format: | Text |
Language: | English |
Published: |
Nature Pub. Group
2015
|
Subjects: | |
Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491831/ http://www.ncbi.nlm.nih.gov/pubmed/26119338 https://doi.org/10.1038/ncomms8587 |
id |
ftpubmed:oai:pubmedcentral.nih.gov:4491831 |
---|---|
record_format |
openpolar |
spelling |
ftpubmed:oai:pubmedcentral.nih.gov:4491831 2023-05-15T14:42:11+02:00 Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean Horikawa, Keiji Martin, Ellen E. Basak, Chandranath Onodera, Jonaotaro Seki, Osamu Sakamoto, Tatsuhiko Ikehara, Minoru Sakai, Saburo Kawamura, Kimitaka 2015-06-29 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491831/ http://www.ncbi.nlm.nih.gov/pubmed/26119338 https://doi.org/10.1038/ncomms8587 en eng Nature Pub. Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491831/ http://www.ncbi.nlm.nih.gov/pubmed/26119338 http://dx.doi.org/10.1038/ncomms8587 Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2015 ftpubmed https://doi.org/10.1038/ncomms8587 2015-07-12T00:06:32Z Warming of high northern latitudes in the Pliocene (5.33–2.58 Myr ago) has been linked to the closure of the Central American Seaway and intensification of North Atlantic Deep Water. Subsequent cooling in the late Pliocene may be related to the effects of freshwater input from the Arctic Ocean via the Bering Strait, disrupting North Atlantic Deep Water formation and enhancing sea ice formation. However, the timing of Arctic freshening has not been defined. Here we present neodymium and lead isotope records of detrital sediment from the Bering Sea for the past 4.3 million years. Isotopic data suggest the presence of Alaskan glaciers as far back as 4.2 Myr ago, while diatom and C37:4 alkenone records show a long-term trend towards colder and fresher water in the Bering Sea beginning with the M2 glaciation (3.3 Myr ago). We argue that the introduction of low-salinity Bering Sea water to the Arctic Ocean by 3.3 Myr ago preconditioned the climate system for global cooling. Text Arctic Arctic Ocean Bering Sea Bering Strait North Atlantic Deep Water North Atlantic Sea ice PubMed Central (PMC) Arctic Arctic Ocean Bering Sea Bering Strait Nature Communications 6 1 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Article |
spellingShingle |
Article Horikawa, Keiji Martin, Ellen E. Basak, Chandranath Onodera, Jonaotaro Seki, Osamu Sakamoto, Tatsuhiko Ikehara, Minoru Sakai, Saburo Kawamura, Kimitaka Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean |
topic_facet |
Article |
description |
Warming of high northern latitudes in the Pliocene (5.33–2.58 Myr ago) has been linked to the closure of the Central American Seaway and intensification of North Atlantic Deep Water. Subsequent cooling in the late Pliocene may be related to the effects of freshwater input from the Arctic Ocean via the Bering Strait, disrupting North Atlantic Deep Water formation and enhancing sea ice formation. However, the timing of Arctic freshening has not been defined. Here we present neodymium and lead isotope records of detrital sediment from the Bering Sea for the past 4.3 million years. Isotopic data suggest the presence of Alaskan glaciers as far back as 4.2 Myr ago, while diatom and C37:4 alkenone records show a long-term trend towards colder and fresher water in the Bering Sea beginning with the M2 glaciation (3.3 Myr ago). We argue that the introduction of low-salinity Bering Sea water to the Arctic Ocean by 3.3 Myr ago preconditioned the climate system for global cooling. |
format |
Text |
author |
Horikawa, Keiji Martin, Ellen E. Basak, Chandranath Onodera, Jonaotaro Seki, Osamu Sakamoto, Tatsuhiko Ikehara, Minoru Sakai, Saburo Kawamura, Kimitaka |
author_facet |
Horikawa, Keiji Martin, Ellen E. Basak, Chandranath Onodera, Jonaotaro Seki, Osamu Sakamoto, Tatsuhiko Ikehara, Minoru Sakai, Saburo Kawamura, Kimitaka |
author_sort |
Horikawa, Keiji |
title |
Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean |
title_short |
Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean |
title_full |
Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean |
title_fullStr |
Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean |
title_full_unstemmed |
Pliocene cooling enhanced by flow of low-salinity Bering Sea water to the Arctic Ocean |
title_sort |
pliocene cooling enhanced by flow of low-salinity bering sea water to the arctic ocean |
publisher |
Nature Pub. Group |
publishDate |
2015 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491831/ http://www.ncbi.nlm.nih.gov/pubmed/26119338 https://doi.org/10.1038/ncomms8587 |
geographic |
Arctic Arctic Ocean Bering Sea Bering Strait |
geographic_facet |
Arctic Arctic Ocean Bering Sea Bering Strait |
genre |
Arctic Arctic Ocean Bering Sea Bering Strait North Atlantic Deep Water North Atlantic Sea ice |
genre_facet |
Arctic Arctic Ocean Bering Sea Bering Strait North Atlantic Deep Water North Atlantic Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491831/ http://www.ncbi.nlm.nih.gov/pubmed/26119338 http://dx.doi.org/10.1038/ncomms8587 |
op_rights |
Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/ncomms8587 |
container_title |
Nature Communications |
container_volume |
6 |
container_issue |
1 |
_version_ |
1766313887201755136 |