Abrupt climatic events during the last glacial-interglacial transition in Alaska
Evidence is mounting that abrupt climatic shifts occurred during the last glacial-interglacial transition (LGIT) in the North Atlantic and other regions. However, few high-resolution climatic records of the LGIT exist from the high latitudes of the North Pacific rim. We analyzed lake sediments from...
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ftnortharizonaun:oai:openknowledge.nau.edu:728 2023-05-15T16:28:50+02:00 Abrupt climatic events during the last glacial-interglacial transition in Alaska Hu, Feng Sheng Nelson, David M. Clarke, Gina H. Ruhland, Kathleen M. Huang, Yongsong Kaufman, Darrell S. Smol, John P. 2006 text http://openknowledge.nau.edu/728/ http://openknowledge.nau.edu/728/1/Hu_FS_etal_2006_Abrupt_climatic_events_last_glacial-interglacial_transition.pdf https://doi.org/10.1029/2006GL027261 en eng http://openknowledge.nau.edu/728/1/Hu_FS_etal_2006_Abrupt_climatic_events_last_glacial-interglacial_transition.pdf Hu, Feng Sheng and Nelson, David M. and Clarke, Gina H. and Ruhland, Kathleen M. and Huang, Yongsong and Kaufman, Darrell S. and Smol, John P. (2006) Abrupt climatic events during the last glacial-interglacial transition in Alaska. Geophysical Research Letters, 33. L18708. ISSN 1944-8007 QC Physics QE Geology Article PeerReviewed 2006 ftnortharizonaun https://doi.org/10.1029/2006GL027261 2020-12-11T11:43:45Z Evidence is mounting that abrupt climatic shifts occurred during the last glacial-interglacial transition (LGIT) in the North Atlantic and other regions. However, few high-resolution climatic records of the LGIT exist from the high latitudes of the North Pacific rim. We analyzed lake sediments from southwestern Alaska for biogenic silica, organic carbon, organic nitrogen, diatom assemblages, and compound-specific hydrogen isotopes. Results reveal climatic changes coincident with the Younger Dryas, Intra-Allerod Cold Period, and Pre-Boreal Oscillation. However, major discrepancies exist in the paleoclimate patterns of the Bolling-Allerod interstadial between our data and the GISP2 18O record from Greenland, and causes are uncertain. These data suggest that the North Pacific and North Atlantic experienced similar reversals during climatic warming of the LGIT but that the Bolling-Allerod cooling trend in the GISP2 18O record is probably not a hemispheric or global pattern. Article in Journal/Newspaper Greenland North Atlantic Alaska OpenKnowledge@NAU (Northern Arizona University, Flagstaff) Greenland Pacific Geophysical Research Letters 33 18 n/a n/a |
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Open Polar |
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OpenKnowledge@NAU (Northern Arizona University, Flagstaff) |
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ftnortharizonaun |
language |
English |
topic |
QC Physics QE Geology |
spellingShingle |
QC Physics QE Geology Hu, Feng Sheng Nelson, David M. Clarke, Gina H. Ruhland, Kathleen M. Huang, Yongsong Kaufman, Darrell S. Smol, John P. Abrupt climatic events during the last glacial-interglacial transition in Alaska |
topic_facet |
QC Physics QE Geology |
description |
Evidence is mounting that abrupt climatic shifts occurred during the last glacial-interglacial transition (LGIT) in the North Atlantic and other regions. However, few high-resolution climatic records of the LGIT exist from the high latitudes of the North Pacific rim. We analyzed lake sediments from southwestern Alaska for biogenic silica, organic carbon, organic nitrogen, diatom assemblages, and compound-specific hydrogen isotopes. Results reveal climatic changes coincident with the Younger Dryas, Intra-Allerod Cold Period, and Pre-Boreal Oscillation. However, major discrepancies exist in the paleoclimate patterns of the Bolling-Allerod interstadial between our data and the GISP2 18O record from Greenland, and causes are uncertain. These data suggest that the North Pacific and North Atlantic experienced similar reversals during climatic warming of the LGIT but that the Bolling-Allerod cooling trend in the GISP2 18O record is probably not a hemispheric or global pattern. |
format |
Article in Journal/Newspaper |
author |
Hu, Feng Sheng Nelson, David M. Clarke, Gina H. Ruhland, Kathleen M. Huang, Yongsong Kaufman, Darrell S. Smol, John P. |
author_facet |
Hu, Feng Sheng Nelson, David M. Clarke, Gina H. Ruhland, Kathleen M. Huang, Yongsong Kaufman, Darrell S. Smol, John P. |
author_sort |
Hu, Feng Sheng |
title |
Abrupt climatic events during the last glacial-interglacial transition in Alaska |
title_short |
Abrupt climatic events during the last glacial-interglacial transition in Alaska |
title_full |
Abrupt climatic events during the last glacial-interglacial transition in Alaska |
title_fullStr |
Abrupt climatic events during the last glacial-interglacial transition in Alaska |
title_full_unstemmed |
Abrupt climatic events during the last glacial-interglacial transition in Alaska |
title_sort |
abrupt climatic events during the last glacial-interglacial transition in alaska |
publishDate |
2006 |
url |
http://openknowledge.nau.edu/728/ http://openknowledge.nau.edu/728/1/Hu_FS_etal_2006_Abrupt_climatic_events_last_glacial-interglacial_transition.pdf https://doi.org/10.1029/2006GL027261 |
geographic |
Greenland Pacific |
geographic_facet |
Greenland Pacific |
genre |
Greenland North Atlantic Alaska |
genre_facet |
Greenland North Atlantic Alaska |
op_relation |
http://openknowledge.nau.edu/728/1/Hu_FS_etal_2006_Abrupt_climatic_events_last_glacial-interglacial_transition.pdf Hu, Feng Sheng and Nelson, David M. and Clarke, Gina H. and Ruhland, Kathleen M. and Huang, Yongsong and Kaufman, Darrell S. and Smol, John P. (2006) Abrupt climatic events during the last glacial-interglacial transition in Alaska. Geophysical Research Letters, 33. L18708. ISSN 1944-8007 |
op_doi |
https://doi.org/10.1029/2006GL027261 |
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Geophysical Research Letters |
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33 |
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18 |
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1766018511885303808 |