Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation
The common methods used for grain-size analysis have their own deficiencies and limitations in terms of explaining the genesis of grain-size components. In this study, the end-member modeling analysis method is applied to multi-mode grain-size distributions of core sediment from Anguli-nuur lake to...
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ftmdpi:oai:mdpi.com:/2073-4433/13/11/1826/ 2023-08-20T04:08:26+02:00 Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation Junfeng Li Xingqi Liu Xin Mao Huiqing Yang agris 2022-11-02 application/pdf https://doi.org/10.3390/atmos13111826 EN eng Multidisciplinary Digital Publishing Institute Climatology https://dx.doi.org/10.3390/atmos13111826 https://creativecommons.org/licenses/by/4.0/ Atmosphere; Volume 13; Issue 11; Pages: 1826 grain-size distribution last deglaciation northern China Anguli-nuur lake Asian monsoon Text 2022 ftmdpi https://doi.org/10.3390/atmos13111826 2023-08-01T07:10:06Z The common methods used for grain-size analysis have their own deficiencies and limitations in terms of explaining the genesis of grain-size components. In this study, the end-member modeling analysis method is applied to multi-mode grain-size distributions of core sediment from Anguli-nuur lake to help to understand the sediment provenance, transport processes and sedimentary environment. Four optimal end-members are unmixed, and three transport-deposition processes are revealed, including the runoff, wave and aeolian processes. The humidity index synthesized by the runoff and aeolian end-members in the core sediment is used to reconstruct the humidity variability in the East Asian monsoonal domain since the last deglaciation. Our record shows that the patterns of humidity variability are coincidentally linked with the monsoonal precipitation index from the same core and stalagmite record in southern China. The Holocene optimum is identified in early and middle Holocene. In addition, a series of millennial- and multi-centennial-scale dry events documented in our record are well correlated with the ice-rafted debris events in the North Atlantic. The results reveal that the grain-size record from Anguli-nuur lake is sensitive in response to moisture variability in northern China. Text North Atlantic MDPI Open Access Publishing Atmosphere 13 11 1826 |
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Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
grain-size distribution last deglaciation northern China Anguli-nuur lake Asian monsoon |
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grain-size distribution last deglaciation northern China Anguli-nuur lake Asian monsoon Junfeng Li Xingqi Liu Xin Mao Huiqing Yang Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation |
topic_facet |
grain-size distribution last deglaciation northern China Anguli-nuur lake Asian monsoon |
description |
The common methods used for grain-size analysis have their own deficiencies and limitations in terms of explaining the genesis of grain-size components. In this study, the end-member modeling analysis method is applied to multi-mode grain-size distributions of core sediment from Anguli-nuur lake to help to understand the sediment provenance, transport processes and sedimentary environment. Four optimal end-members are unmixed, and three transport-deposition processes are revealed, including the runoff, wave and aeolian processes. The humidity index synthesized by the runoff and aeolian end-members in the core sediment is used to reconstruct the humidity variability in the East Asian monsoonal domain since the last deglaciation. Our record shows that the patterns of humidity variability are coincidentally linked with the monsoonal precipitation index from the same core and stalagmite record in southern China. The Holocene optimum is identified in early and middle Holocene. In addition, a series of millennial- and multi-centennial-scale dry events documented in our record are well correlated with the ice-rafted debris events in the North Atlantic. The results reveal that the grain-size record from Anguli-nuur lake is sensitive in response to moisture variability in northern China. |
format |
Text |
author |
Junfeng Li Xingqi Liu Xin Mao Huiqing Yang |
author_facet |
Junfeng Li Xingqi Liu Xin Mao Huiqing Yang |
author_sort |
Junfeng Li |
title |
Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation |
title_short |
Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation |
title_full |
Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation |
title_fullStr |
Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation |
title_full_unstemmed |
Grain-Size End-Members of Anguli-Nuur Lake Core Sediments: Evidence for Moisture Variability in Northern China since the Last Deglaciation |
title_sort |
grain-size end-members of anguli-nuur lake core sediments: evidence for moisture variability in northern china since the last deglaciation |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2022 |
url |
https://doi.org/10.3390/atmos13111826 |
op_coverage |
agris |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Atmosphere; Volume 13; Issue 11; Pages: 1826 |
op_relation |
Climatology https://dx.doi.org/10.3390/atmos13111826 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/atmos13111826 |
container_title |
Atmosphere |
container_volume |
13 |
container_issue |
11 |
container_start_page |
1826 |
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1774720685470384128 |