Cirques of the central Tibetan Plateau: Morphology and controlling factors
Cirque morphology represents the characteristics of palaeoglaciations and palaeoclimate. This study mapped and analysed 70 cirques in the central Tibetan Plateau (TP) with dominant continental climate. The results show that from northwest to southeast, cirque dimensions (i.e., length, width, and are...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
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Online Access: | http://ir.ieecas.cn/handle/361006/17244 http://ir.ieecas.cn/handle/361006/17245 https://doi.org/10.1016/j.palaeo.2021.110656 |
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ftchinacascieeca:oai:ir.ieecas.cn:361006/17245 2023-06-11T04:11:57+02:00 Cirques of the central Tibetan Plateau: Morphology and controlling factors Zhang, Qian Dong, Wenhan Dou, Jiahui Dong, Guocheng Zech, Roland 2021-11-15 http://ir.ieecas.cn/handle/361006/17244 http://ir.ieecas.cn/handle/361006/17245 https://doi.org/10.1016/j.palaeo.2021.110656 英语 eng ELSEVIER PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.ieecas.cn/handle/361006/17244 http://ir.ieecas.cn/handle/361006/17245 doi:10.1016/j.palaeo.2021.110656 Cirque Palaeoclimate Palaeoglaciation Central Tibetan Plateau GLACIAL CIRQUES SPATIAL-DISTRIBUTION ICELAND IMPLICATIONS MOUNTAIN-GLACIATION CASCADE RANGE BUZZSAW CLIMATE MORPHOMETRY EROSION LINE Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary 期刊论文 2021 ftchinacascieeca https://doi.org/10.1016/j.palaeo.2021.110656 2023-05-08T13:25:29Z Cirque morphology represents the characteristics of palaeoglaciations and palaeoclimate. This study mapped and analysed 70 cirques in the central Tibetan Plateau (TP) with dominant continental climate. The results show that from northwest to southeast, cirque dimensions (i.e., length, width, and area) increase, while cirque floor altitudes decrease. A likely reason is the high precipitation rate caused by the Indian summer monsoon in the southeastern part. The diversity of cirque aspect values indicates weak or inconsistent prevailing winds during cirque development. Cirques enlarge with altitude, which might imply that cirques at high altitudes developed early and thus increased in size. Cirque aspect diversity increases with altitude from 5100 to 5600 m above sea level (asl), which indicates the capacity of high altitudes to support cirques at less favourable slopes. If altitude increases above 5600 m asl, the diversity of cirque aspect first increases and then decreases, which may be because of local topography. Mountain orientation and lithology had an effect on cirque aspect/size. Cirque numbers and sizes were compared between western, central, and eastern sectors of the Gangdise Mountains in the southern TP with those in the central TP. This comparison showed that a strengthening Indian summer monsoon can raise the value of `cirque density' (i.e., cirque number per unit area), promote glacier development into valley-type, and limit cirque enlargement. Report glacier Iceland Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) Indian Palaeogeography, Palaeoclimatology, Palaeoecology 582 110656 |
institution |
Open Polar |
collection |
Institute of Earth Environment: IEECAS OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchinacascieeca |
language |
English |
topic |
Cirque Palaeoclimate Palaeoglaciation Central Tibetan Plateau GLACIAL CIRQUES SPATIAL-DISTRIBUTION ICELAND IMPLICATIONS MOUNTAIN-GLACIATION CASCADE RANGE BUZZSAW CLIMATE MORPHOMETRY EROSION LINE Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Cirque Palaeoclimate Palaeoglaciation Central Tibetan Plateau GLACIAL CIRQUES SPATIAL-DISTRIBUTION ICELAND IMPLICATIONS MOUNTAIN-GLACIATION CASCADE RANGE BUZZSAW CLIMATE MORPHOMETRY EROSION LINE Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary Zhang, Qian Dong, Wenhan Dou, Jiahui Dong, Guocheng Zech, Roland Cirques of the central Tibetan Plateau: Morphology and controlling factors |
topic_facet |
Cirque Palaeoclimate Palaeoglaciation Central Tibetan Plateau GLACIAL CIRQUES SPATIAL-DISTRIBUTION ICELAND IMPLICATIONS MOUNTAIN-GLACIATION CASCADE RANGE BUZZSAW CLIMATE MORPHOMETRY EROSION LINE Physical Geography Geology Paleontology Geography Physical Geosciences Multidisciplinary |
description |
Cirque morphology represents the characteristics of palaeoglaciations and palaeoclimate. This study mapped and analysed 70 cirques in the central Tibetan Plateau (TP) with dominant continental climate. The results show that from northwest to southeast, cirque dimensions (i.e., length, width, and area) increase, while cirque floor altitudes decrease. A likely reason is the high precipitation rate caused by the Indian summer monsoon in the southeastern part. The diversity of cirque aspect values indicates weak or inconsistent prevailing winds during cirque development. Cirques enlarge with altitude, which might imply that cirques at high altitudes developed early and thus increased in size. Cirque aspect diversity increases with altitude from 5100 to 5600 m above sea level (asl), which indicates the capacity of high altitudes to support cirques at less favourable slopes. If altitude increases above 5600 m asl, the diversity of cirque aspect first increases and then decreases, which may be because of local topography. Mountain orientation and lithology had an effect on cirque aspect/size. Cirque numbers and sizes were compared between western, central, and eastern sectors of the Gangdise Mountains in the southern TP with those in the central TP. This comparison showed that a strengthening Indian summer monsoon can raise the value of `cirque density' (i.e., cirque number per unit area), promote glacier development into valley-type, and limit cirque enlargement. |
format |
Report |
author |
Zhang, Qian Dong, Wenhan Dou, Jiahui Dong, Guocheng Zech, Roland |
author_facet |
Zhang, Qian Dong, Wenhan Dou, Jiahui Dong, Guocheng Zech, Roland |
author_sort |
Zhang, Qian |
title |
Cirques of the central Tibetan Plateau: Morphology and controlling factors |
title_short |
Cirques of the central Tibetan Plateau: Morphology and controlling factors |
title_full |
Cirques of the central Tibetan Plateau: Morphology and controlling factors |
title_fullStr |
Cirques of the central Tibetan Plateau: Morphology and controlling factors |
title_full_unstemmed |
Cirques of the central Tibetan Plateau: Morphology and controlling factors |
title_sort |
cirques of the central tibetan plateau: morphology and controlling factors |
publisher |
ELSEVIER |
publishDate |
2021 |
url |
http://ir.ieecas.cn/handle/361006/17244 http://ir.ieecas.cn/handle/361006/17245 https://doi.org/10.1016/j.palaeo.2021.110656 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
glacier Iceland |
genre_facet |
glacier Iceland |
op_relation |
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://ir.ieecas.cn/handle/361006/17244 http://ir.ieecas.cn/handle/361006/17245 doi:10.1016/j.palaeo.2021.110656 |
op_doi |
https://doi.org/10.1016/j.palaeo.2021.110656 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
582 |
container_start_page |
110656 |
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1768387413092073472 |