Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation
During the last glacial termination, a warming trend was generally interrupted by rapid millennium-scale cold reversals, such as the Greenland (Isotope) Stadial 1 (GS-1) and GS-2a events. To understand how glaciers on the Tibetan Plateau (TP) responded to these rapid climate events, this study const...
Published in: | Quaternary Research |
---|---|
Main Authors: | , , , , , , , |
Format: | Report |
Language: | English |
Published: |
CAMBRIDGE UNIV PRESS
2020
|
Subjects: | |
Online Access: | http://ir.ieecas.cn/handle/361006/13969 https://doi.org/10.1017/qua.2020.7 |
id |
ftchinacascieeca:oai:ir.ieecas.cn:361006/13969 |
---|---|
record_format |
openpolar |
spelling |
ftchinacascieeca:oai:ir.ieecas.cn:361006/13969 2023-06-11T04:12:14+02:00 Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation Xu, Xiangke Yao, Tandong Xu, Baiqing Yi, Chaolu Sun, Yong Zeng, Xuezhen Dong, Guocheng Pan, Baolin 2020-05-01 http://ir.ieecas.cn/handle/361006/13969 https://doi.org/10.1017/qua.2020.7 英语 eng CAMBRIDGE UNIV PRESS QUATERNARY RESEARCH http://ir.ieecas.cn/handle/361006/13969 doi:10.1017/qua.2020.7 Last glacial termination Glacial event Cosmogenic Be-10 dating Millennium-scale climate events Pagele valley NUCLIDE PRODUCTION-RATES INDIAN-SUMMER MONSOON CLIMATE-CHANGE EXPOSURE AGES QUATERNARY GLACIATION BE-10 MAXIMUM PRECIPITATION MOUNTAINS RECORD Physical Geography Geology Geography Physical Geosciences Multidisciplinary 期刊论文 2020 ftchinacascieeca https://doi.org/10.1017/qua.2020.7 2023-05-08T13:24:31Z During the last glacial termination, a warming trend was generally interrupted by rapid millennium-scale cold reversals, such as the Greenland (Isotope) Stadial 1 (GS-1) and GS-2a events. To understand how glaciers on the Tibetan Plateau (TP) responded to these rapid climate events, this study constrained the timing and extent of three glacial events during the late-glacial period. Specifically, using a cosmogenic Be-10 exposure dating method, we dated three prominent glacial moraines (PM1, PM2, PM3) back to 15,850 +/- 980, 14,140 +/- 880, and 12,430 +/- 790 yr in the Pagele valley, southern TP, corresponding to GS-2a, Greenland Interstadial 1 (GI-1), and GS-1, respectively. By simulating glacial extents forced by different climate scenarios, the study constrained the temperature decreases relative to present to be 2.6 degrees C-2.9 degrees C, similar to 1.6 degrees C, and 1.4 degrees C-1.5 degrees C during the GS-2a, GI-1, and GS-1 periods in the region, with precipitation values of 60%-80%, similar to 100%, and 80%-90% of present value, respectively. Considering information from oceanic and atmospheric circulation, the study suggested that on the TP, the glacial events during the last glacial termination were well connected with the millennium-scale climate events in the North Atlantic region through the westerlies, while the Indian summer monsoon played a positive role in sustaining the glaciers under the warming climate trend. Report Greenland North Atlantic Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Greenland Indian Quaternary Research 95 129 141 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Last glacial termination Glacial event Cosmogenic Be-10 dating Millennium-scale climate events Pagele valley NUCLIDE PRODUCTION-RATES INDIAN-SUMMER MONSOON CLIMATE-CHANGE EXPOSURE AGES QUATERNARY GLACIATION BE-10 MAXIMUM PRECIPITATION MOUNTAINS RECORD Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Last glacial termination Glacial event Cosmogenic Be-10 dating Millennium-scale climate events Pagele valley NUCLIDE PRODUCTION-RATES INDIAN-SUMMER MONSOON CLIMATE-CHANGE EXPOSURE AGES QUATERNARY GLACIATION BE-10 MAXIMUM PRECIPITATION MOUNTAINS RECORD Physical Geography Geology Geography Physical Geosciences Multidisciplinary Xu, Xiangke Yao, Tandong Xu, Baiqing Yi, Chaolu Sun, Yong Zeng, Xuezhen Dong, Guocheng Pan, Baolin Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation |
topic_facet |
Last glacial termination Glacial event Cosmogenic Be-10 dating Millennium-scale climate events Pagele valley NUCLIDE PRODUCTION-RATES INDIAN-SUMMER MONSOON CLIMATE-CHANGE EXPOSURE AGES QUATERNARY GLACIATION BE-10 MAXIMUM PRECIPITATION MOUNTAINS RECORD Physical Geography Geology Geography Physical Geosciences Multidisciplinary |
description |
During the last glacial termination, a warming trend was generally interrupted by rapid millennium-scale cold reversals, such as the Greenland (Isotope) Stadial 1 (GS-1) and GS-2a events. To understand how glaciers on the Tibetan Plateau (TP) responded to these rapid climate events, this study constrained the timing and extent of three glacial events during the late-glacial period. Specifically, using a cosmogenic Be-10 exposure dating method, we dated three prominent glacial moraines (PM1, PM2, PM3) back to 15,850 +/- 980, 14,140 +/- 880, and 12,430 +/- 790 yr in the Pagele valley, southern TP, corresponding to GS-2a, Greenland Interstadial 1 (GI-1), and GS-1, respectively. By simulating glacial extents forced by different climate scenarios, the study constrained the temperature decreases relative to present to be 2.6 degrees C-2.9 degrees C, similar to 1.6 degrees C, and 1.4 degrees C-1.5 degrees C during the GS-2a, GI-1, and GS-1 periods in the region, with precipitation values of 60%-80%, similar to 100%, and 80%-90% of present value, respectively. Considering information from oceanic and atmospheric circulation, the study suggested that on the TP, the glacial events during the last glacial termination were well connected with the millennium-scale climate events in the North Atlantic region through the westerlies, while the Indian summer monsoon played a positive role in sustaining the glaciers under the warming climate trend. |
format |
Report |
author |
Xu, Xiangke Yao, Tandong Xu, Baiqing Yi, Chaolu Sun, Yong Zeng, Xuezhen Dong, Guocheng Pan, Baolin |
author_facet |
Xu, Xiangke Yao, Tandong Xu, Baiqing Yi, Chaolu Sun, Yong Zeng, Xuezhen Dong, Guocheng Pan, Baolin |
author_sort |
Xu, Xiangke |
title |
Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation |
title_short |
Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation |
title_full |
Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation |
title_fullStr |
Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation |
title_full_unstemmed |
Glacial events during the last glacial termination in the Pagele valley, Qiongmu Gangri peak, southern Tibetan Plateau, and their links to oceanic and atmospheric circulation |
title_sort |
glacial events during the last glacial termination in the pagele valley, qiongmu gangri peak, southern tibetan plateau, and their links to oceanic and atmospheric circulation |
publisher |
CAMBRIDGE UNIV PRESS |
publishDate |
2020 |
url |
http://ir.ieecas.cn/handle/361006/13969 https://doi.org/10.1017/qua.2020.7 |
geographic |
Greenland Indian |
geographic_facet |
Greenland Indian |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_relation |
QUATERNARY RESEARCH http://ir.ieecas.cn/handle/361006/13969 doi:10.1017/qua.2020.7 |
op_doi |
https://doi.org/10.1017/qua.2020.7 |
container_title |
Quaternary Research |
container_volume |
95 |
container_start_page |
129 |
op_container_end_page |
141 |
_version_ |
1768387940539432960 |