Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma
273 samples from Ocean Drilling Program (ODP) Site 1146 in the northern South China Sea (SCS) were analyzed for grain-size distributions using grain-size class vs. standard deviation method and end-member modeling algorithm (EMMA) in order to investigate the evolution of the East Asian mon-soon sinc...
Published in: | Science in China Series D: Earth Sciences |
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Online Access: | http://ir.qdio.ac.cn/handle/337002/5073 https://doi.org/10.1007/s11430-007-0082-0 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/5072 2024-09-15T18:31:08+00:00 Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma Wan ShiMing Li AnChun Stuut, Jan-Berend W. Xu FangJian 2007-10-01 http://ir.qdio.ac.cn/handle/337002/5073 https://doi.org/10.1007/s11430-007-0082-0 英语 eng SCIENCE IN CHINA SERIES D-EARTH SCIENCES Wan ShiMing; Li AnChun; Stuut, Jan-Berend W.; Xu FangJian.Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma,SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(10):1536-1547 http://ir.qdio.ac.cn/handle/337002/5073 doi:10.1007/s11430-007-0082-0 Grain Size Eolian Dust East Asian Monsoon South China Sea Odp Leg 184 Geosciences Multidisciplinary Article 期刊论文 2007 ftchinacasciocas https://doi.org/10.1007/s11430-007-0082-0 2024-08-09T03:18:11Z 273 samples from Ocean Drilling Program (ODP) Site 1146 in the northern South China Sea (SCS) were analyzed for grain-size distributions using grain-size class vs. standard deviation method and end-member modeling algorithm (EMMA) in order to investigate the evolution of the East Asian mon-soon since about 20 Ma. 10-19 mu m/1.3-2.4 mu m, the ratio of two grain-size populations with the highest variability through time was used to indicate East Asian winter monsoon intensity relative to summer monsoon. The mass accumulation rate of the coarsest end member EM1 (eolian), resulting from EMMA, can be used as a proxy of winter monsoon strength and Asian inland aridity, and the ratio of EM1/(EM2+EM3) as a proxy of winter monsoon intensity relative to summer monsoon. The combined proxies show that a profound enhancement of East Asian winter monsoon strength and winter monsoon intensity relative to summer monsoon occurred at about 8 Ma, and it is possible that the summer monsoon simultaneously intensified with winter monsoon at 3 Ma. Our results are well consistent with the previous studies in loess, eolian deposion in the Pacifc, radiolarians and planktonic foraminifera in the SCS. The phased uplift of the Himalaya-Tibetan Plateau may have played a significant role in strengthening the Asian monsoon at 8 Ma and 3 Ma. 273 samples from Ocean Drilling Program (ODP) Site 1146 in the northern South China Sea (SCS) were analyzed for grain-size distributions using grain-size class vs. standard deviation method and end-member modeling algorithm (EMMA) in order to investigate the evolution of the East Asian mon-soon since about 20 Ma. 10-19 mu m/1.3-2.4 mu m, the ratio of two grain-size populations with the highest variability through time was used to indicate East Asian winter monsoon intensity relative to summer monsoon. The mass accumulation rate of the coarsest end member EM1 (eolian), resulting from EMMA, can be used as a proxy of winter monsoon strength and Asian inland aridity, and the ratio of EM1/(EM2+EM3) as a proxy ... Article in Journal/Newspaper Planktonic foraminifera Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Science in China Series D: Earth Sciences 50 10 1536 1547 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Grain Size Eolian Dust East Asian Monsoon South China Sea Odp Leg 184 Geosciences Multidisciplinary |
spellingShingle |
Grain Size Eolian Dust East Asian Monsoon South China Sea Odp Leg 184 Geosciences Multidisciplinary Wan ShiMing Li AnChun Stuut, Jan-Berend W. Xu FangJian Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma |
topic_facet |
Grain Size Eolian Dust East Asian Monsoon South China Sea Odp Leg 184 Geosciences Multidisciplinary |
description |
273 samples from Ocean Drilling Program (ODP) Site 1146 in the northern South China Sea (SCS) were analyzed for grain-size distributions using grain-size class vs. standard deviation method and end-member modeling algorithm (EMMA) in order to investigate the evolution of the East Asian mon-soon since about 20 Ma. 10-19 mu m/1.3-2.4 mu m, the ratio of two grain-size populations with the highest variability through time was used to indicate East Asian winter monsoon intensity relative to summer monsoon. The mass accumulation rate of the coarsest end member EM1 (eolian), resulting from EMMA, can be used as a proxy of winter monsoon strength and Asian inland aridity, and the ratio of EM1/(EM2+EM3) as a proxy of winter monsoon intensity relative to summer monsoon. The combined proxies show that a profound enhancement of East Asian winter monsoon strength and winter monsoon intensity relative to summer monsoon occurred at about 8 Ma, and it is possible that the summer monsoon simultaneously intensified with winter monsoon at 3 Ma. Our results are well consistent with the previous studies in loess, eolian deposion in the Pacifc, radiolarians and planktonic foraminifera in the SCS. The phased uplift of the Himalaya-Tibetan Plateau may have played a significant role in strengthening the Asian monsoon at 8 Ma and 3 Ma. 273 samples from Ocean Drilling Program (ODP) Site 1146 in the northern South China Sea (SCS) were analyzed for grain-size distributions using grain-size class vs. standard deviation method and end-member modeling algorithm (EMMA) in order to investigate the evolution of the East Asian mon-soon since about 20 Ma. 10-19 mu m/1.3-2.4 mu m, the ratio of two grain-size populations with the highest variability through time was used to indicate East Asian winter monsoon intensity relative to summer monsoon. The mass accumulation rate of the coarsest end member EM1 (eolian), resulting from EMMA, can be used as a proxy of winter monsoon strength and Asian inland aridity, and the ratio of EM1/(EM2+EM3) as a proxy ... |
format |
Article in Journal/Newspaper |
author |
Wan ShiMing Li AnChun Stuut, Jan-Berend W. Xu FangJian |
author_facet |
Wan ShiMing Li AnChun Stuut, Jan-Berend W. Xu FangJian |
author_sort |
Wan ShiMing |
title |
Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma |
title_short |
Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma |
title_full |
Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma |
title_fullStr |
Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma |
title_full_unstemmed |
Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma |
title_sort |
grain-size records at odp site 1146 from the northern south china sea: implications on the east asian monsoon evolution since 20 ma |
publishDate |
2007 |
url |
http://ir.qdio.ac.cn/handle/337002/5073 https://doi.org/10.1007/s11430-007-0082-0 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
SCIENCE IN CHINA SERIES D-EARTH SCIENCES Wan ShiMing; Li AnChun; Stuut, Jan-Berend W.; Xu FangJian.Grain-size records at ODP site 1146 from the northern South China sea: Implications on the east Asian monsoon evolution since 20 Ma,SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2007,50(10):1536-1547 http://ir.qdio.ac.cn/handle/337002/5073 doi:10.1007/s11430-007-0082-0 |
op_doi |
https://doi.org/10.1007/s11430-007-0082-0 |
container_title |
Science in China Series D: Earth Sciences |
container_volume |
50 |
container_issue |
10 |
container_start_page |
1536 |
op_container_end_page |
1547 |
_version_ |
1810472746096787456 |