Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China
Abstract The northeastern Qinghai‐Tibetan Plateau (QTP) of China is located at the triple junction of the Asian winter and summer monsoons and the westerlies, where paleoclimatic evolution has an important scientific significance for recognizing the spatial‐temporal pattern of Asian monsoons in the...
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crwiley:10.1111/1755-6724.14541 2024-04-21T08:05:06+00:00 Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China LIU, Bing ZHAO, Hui JIN, Heling CHEN, Fahu 2020 http://dx.doi.org/10.1111/1755-6724.14541 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1755-6724.14541 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14541 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14541 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Acta Geologica Sinica - English Edition volume 94, issue 3, page 668-681 ISSN 1000-9515 1755-6724 Geology journal-article 2020 crwiley https://doi.org/10.1111/1755-6724.14541 2024-03-26T09:15:49Z Abstract The northeastern Qinghai‐Tibetan Plateau (QTP) of China is located at the triple junction of the Asian winter and summer monsoons and the westerlies, where paleoclimatic evolution has an important scientific significance for recognizing the spatial‐temporal pattern of Asian monsoons in the past and predicting environmental change in the future. Nevertheless, the framework of the Holocene moisture variation and related mechanisms remain controversial, owing to complex hydroclimatic conditions triggered by the landform of the large mountain‐arid basin. Here, we employed geochemical proxies from typical aeolian sand‐palaeosol sequences in the Gonghe Basin, northeastern QTP, together with Optically Stimulated Luminescence (OSL) dating, to reconstruct the pattern of effective moisture variation and associated mechanisms in this region. Our results indicate that the regional effective moisture was at its lowest until 9–8 ka, and approached a maximum during 8–4/3 ka of the middle Holocene. Afterwards, the climate became relatively dry in general, but with a transient humid interval around 2–1 ka. Our geochemical evidence indicates that the dry early Holocene probably can be attributed to a strong winter monsoon forced by remnant ice sheet, combined with the high evaporation caused by solar insolation. Also, shifts of humid‐dry are closely linked to the Asian summer monsoonal strength and therefore the balance of evaporation‐precipitation in the middle and late Holocene. Thus, the pattern of the Holocene effective moisture variation is characterized as the ‘monsoon model’ in a closed intermontane arid and semi‐arid basin near the western Asian monsoonal limit. Article in Journal/Newspaper Ice Sheet Wiley Online Library Acta Geologica Sinica - English Edition 94 3 668 681 |
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English |
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Geology |
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Geology LIU, Bing ZHAO, Hui JIN, Heling CHEN, Fahu Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China |
topic_facet |
Geology |
description |
Abstract The northeastern Qinghai‐Tibetan Plateau (QTP) of China is located at the triple junction of the Asian winter and summer monsoons and the westerlies, where paleoclimatic evolution has an important scientific significance for recognizing the spatial‐temporal pattern of Asian monsoons in the past and predicting environmental change in the future. Nevertheless, the framework of the Holocene moisture variation and related mechanisms remain controversial, owing to complex hydroclimatic conditions triggered by the landform of the large mountain‐arid basin. Here, we employed geochemical proxies from typical aeolian sand‐palaeosol sequences in the Gonghe Basin, northeastern QTP, together with Optically Stimulated Luminescence (OSL) dating, to reconstruct the pattern of effective moisture variation and associated mechanisms in this region. Our results indicate that the regional effective moisture was at its lowest until 9–8 ka, and approached a maximum during 8–4/3 ka of the middle Holocene. Afterwards, the climate became relatively dry in general, but with a transient humid interval around 2–1 ka. Our geochemical evidence indicates that the dry early Holocene probably can be attributed to a strong winter monsoon forced by remnant ice sheet, combined with the high evaporation caused by solar insolation. Also, shifts of humid‐dry are closely linked to the Asian summer monsoonal strength and therefore the balance of evaporation‐precipitation in the middle and late Holocene. Thus, the pattern of the Holocene effective moisture variation is characterized as the ‘monsoon model’ in a closed intermontane arid and semi‐arid basin near the western Asian monsoonal limit. |
format |
Article in Journal/Newspaper |
author |
LIU, Bing ZHAO, Hui JIN, Heling CHEN, Fahu |
author_facet |
LIU, Bing ZHAO, Hui JIN, Heling CHEN, Fahu |
author_sort |
LIU, Bing |
title |
Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China |
title_short |
Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China |
title_full |
Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China |
title_fullStr |
Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China |
title_full_unstemmed |
Holocene Moisture Variation Recorded by Aeolian Sand‐Palaeosol Sequences of the Gonghe Basin, Northeastern Qinghai‐Tibetan Plateau, China |
title_sort |
holocene moisture variation recorded by aeolian sand‐palaeosol sequences of the gonghe basin, northeastern qinghai‐tibetan plateau, china |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/1755-6724.14541 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2F1755-6724.14541 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1755-6724.14541 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1755-6724.14541 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Acta Geologica Sinica - English Edition volume 94, issue 3, page 668-681 ISSN 1000-9515 1755-6724 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/1755-6724.14541 |
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Acta Geologica Sinica - English Edition |
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94 |
container_issue |
3 |
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668 |
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681 |
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1796944640255983616 |