Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China
Identifying Holocene Indian Summer Monsoon (ISM) variability and its possible mechanism is critical for predicting future environmental changes. In this study, we present a well-dated, ca. 9.4 kyr geochemical and grain size record derived from Lake Ximenglongtan, southwestern China. The record depic...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:683884 2023-05-15T17:33:48+02:00 Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China Ning, Dongliang Zhang, Enlou Sun, Weiwei Chang, Jie Shulmeister, James 2017-09-08 https://espace.library.uq.edu.au/view/UQ:683884 eng eng Elsevier doi:10.1016/j.palaeo.2017.09.008 issn:0031-0182 issn:1872-616X orcid:0000-0001-9684-6550 orcid:0000-0001-5863-9462 41572337 2016YFA0600502 Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography 1105 Ecology 1904 Earth-Surface Processes 1910 Oceanography 1911 Palaeontology Journal Article 2017 ftunivqespace https://doi.org/10.1016/j.palaeo.2017.09.008 2020-12-08T02:06:51Z Identifying Holocene Indian Summer Monsoon (ISM) variability and its possible mechanism is critical for predicting future environmental changes. In this study, we present a well-dated, ca. 9.4 kyr geochemical and grain size record derived from Lake Ximenglongtan, southwestern China. The record depicts the Holocene ISM evolution and multi-decadal to centennial abrupt precipitation change events superimposed on the long-term climate changes. The results indicate that precipitation was high during the first half of the Holocene from ca. 9.4 to 4.5 cal kyr B.P. but decreased over the later Holocene. On the multi-decadal to centennial time scale, our results show that a pronounced and prolonged drought event occurred between 7.6 and 7.0 cal kyr B.P. In addition, several other low precipitation events occurred at about 8.9, 6.3, 5.2, 4.2, 3.7, 2.5 and 1.7 cal kyr B.P., which correspond well with reported intervals of abrupt ISM weakening events. Our findings suggest that changes in solar activity may have primarily controlled the fluctuations of ISM intensity on the multi-decadal to centennial time-scale. Cooling of the North Atlantic climate and the interactions between tropical-ocean and atmosphere may have amplified the solar signal. Article in Journal/Newspaper North Atlantic The University of Queensland: UQ eSpace Indian Palaeogeography, Palaeoclimatology, Palaeoecology 487 260 269 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography 1105 Ecology 1904 Earth-Surface Processes 1910 Oceanography 1911 Palaeontology |
spellingShingle |
Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography 1105 Ecology 1904 Earth-Surface Processes 1910 Oceanography 1911 Palaeontology Ning, Dongliang Zhang, Enlou Sun, Weiwei Chang, Jie Shulmeister, James Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China |
topic_facet |
Earth-Surface Processes Palaeontology Ecology Evolution Behavior and Systematics Oceanography 1105 Ecology 1904 Earth-Surface Processes 1910 Oceanography 1911 Palaeontology |
description |
Identifying Holocene Indian Summer Monsoon (ISM) variability and its possible mechanism is critical for predicting future environmental changes. In this study, we present a well-dated, ca. 9.4 kyr geochemical and grain size record derived from Lake Ximenglongtan, southwestern China. The record depicts the Holocene ISM evolution and multi-decadal to centennial abrupt precipitation change events superimposed on the long-term climate changes. The results indicate that precipitation was high during the first half of the Holocene from ca. 9.4 to 4.5 cal kyr B.P. but decreased over the later Holocene. On the multi-decadal to centennial time scale, our results show that a pronounced and prolonged drought event occurred between 7.6 and 7.0 cal kyr B.P. In addition, several other low precipitation events occurred at about 8.9, 6.3, 5.2, 4.2, 3.7, 2.5 and 1.7 cal kyr B.P., which correspond well with reported intervals of abrupt ISM weakening events. Our findings suggest that changes in solar activity may have primarily controlled the fluctuations of ISM intensity on the multi-decadal to centennial time-scale. Cooling of the North Atlantic climate and the interactions between tropical-ocean and atmosphere may have amplified the solar signal. |
format |
Article in Journal/Newspaper |
author |
Ning, Dongliang Zhang, Enlou Sun, Weiwei Chang, Jie Shulmeister, James |
author_facet |
Ning, Dongliang Zhang, Enlou Sun, Weiwei Chang, Jie Shulmeister, James |
author_sort |
Ning, Dongliang |
title |
Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China |
title_short |
Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China |
title_full |
Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China |
title_fullStr |
Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China |
title_full_unstemmed |
Holocene Indian Summer Monsoon variation inferred from geochemical and grain size records from Lake Ximenglongtan, southwestern China |
title_sort |
holocene indian summer monsoon variation inferred from geochemical and grain size records from lake ximenglongtan, southwestern china |
publisher |
Elsevier |
publishDate |
2017 |
url |
https://espace.library.uq.edu.au/view/UQ:683884 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
doi:10.1016/j.palaeo.2017.09.008 issn:0031-0182 issn:1872-616X orcid:0000-0001-9684-6550 orcid:0000-0001-5863-9462 41572337 2016YFA0600502 |
op_doi |
https://doi.org/10.1016/j.palaeo.2017.09.008 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
487 |
container_start_page |
260 |
op_container_end_page |
269 |
_version_ |
1766132419036971008 |