| LIU Shengfa,SHI Xuefa,LIU Yanguang,WU Yonghua,YANG Gang. 2011. Environmental record from the mud area on the inner continental shelf of the East China Sea since the midHolocene. Acta Oceanologica Sinica, (4):43－52 |
| Environmental record from the mud area on the inner continental shelf of the East China Sea since the midHolocene |
| Environmental record from the mud area on the inner continental shelf of the East China Sea since the midHolocene |
| Received:September 01, 2010 Revised:March 08, 2011 |
| DOI：10.1007/s13131-011-0132-5 |
| Key words:Holocene East China Sea mud area major element palaeoclimate East Asia monsoon |
| 中文关键词: Holocene East China Sea mud area major element palaeoclimate East Asia monsoon |
| 基金项目:Coastal Investigation and Research Project of China under contract Nos 908-01-CJ12 and 908-ZC-I-05; Marine Public Welfare Research Project under contract No. 200805063; China Postdoctoral Science Foundation under contract No. 20100481304. |
| Author Name | Affiliation | E-mail | | LIU Shengfa | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Sedimentology and Environmental Geology, State Oceanic Administration, Qingdao 266061, China | | | SHI Xuefa | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Sedimentology and Environmental Geology, State Oceanic Administration, Qingdao 266061, China | xfshi@fio.org.cn | | LIU Yanguang | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Sedimentology and Environmental Geology, State Oceanic Administration, Qingdao 266061, China | | | WU Yonghua | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Sedimentology and Environmental Geology, State Oceanic Administration, Qingdao 266061, China | | | YANG Gang | First Institute of Oceanography, State Oceanic Administration, Qingdao 266061, China
Key Laboratory of Marine Sedimentology and Environmental Geology, State Oceanic Administration, Qingdao 266061, China | |
|
| Hits: 1116 |
| Download times: 811 |
| Abstract: |
| Paleoclimate record was revealed in Core MZ01 covering the mid-Holocene in age, located in the mud area of the inner continental shelf of the East China Sea. The ancient environment featured low-energy shallow sea shelf deposition formed mainly by coastal currents. The results show that temporal variation in geochemistry corresponds with the climate changes inferred from historical record. Relatively low MgO/Al2O3, CaO/K2O and high Al2O3/Na2O, K2O/Na2O, MnO/CaO values reflected a warm and humid climate in general, and vice versa. Therefore, these chemical indices could be applied to identify the variation of palaeoclimate in eastern China. The authors reconstructed the history of mid-Holocene climatic variation of the inner continental shelf of the East China Sea. From 8 300 a BP to 4 200 a BP, the climate was moderately warm and humid. From 4 200 a BP to 2 000 a BP, the climate turned cool and dry, and the regional climate frequently fluctuated in alternation of cool-dry periods (3 700 a BP, 2 850 a BP and 2 400 a BP) and warm-wet periods (3 250 a BP and 2 650 a BP). After 2 000 a BP, the climate of the study area gradually turned warm again, while the Little Ice Age, a cold event centered at around 250 a BP was indicated by those geochemical indices as mentioned above. |
| 中文摘要: |
| Paleoclimate record was revealed in Core MZ01 covering the mid-Holocene in age, located in the mud area of the inner continental shelf of the East China Sea. The ancient environment featured low-energy shallow sea shelf deposition formed mainly by coastal currents. The results show that temporal variation in geochemistry corresponds with the climate changes inferred from historical record. Relatively low MgO/Al2O3, CaO/K2O and high Al2O3/Na2O, K2O/Na2O, MnO/CaO values reflected a warm and humid climate in general, and vice versa. Therefore, these chemical indices could be applied to identify the variation of palaeoclimate in eastern China. The authors reconstructed the history of mid-Holocene climatic variation of the inner continental shelf of the East China Sea. From 8 300 a BP to 4 200 a BP, the climate was moderately warm and humid. From 4 200 a BP to 2 000 a BP, the climate turned cool and dry, and the regional climate frequently fluctuated in alternation of cool-dry periods (3 700 a BP, 2 850 a BP and 2 400 a BP) and warm-wet periods (3 250 a BP and 2 650 a BP). After 2 000 a BP, the climate of the study area gradually turned warm again, while the Little Ice Age, a cold event centered at around 250 a BP was indicated by those geochemical indices as mentioned above. |
|
HTML
View Full Text
View/Add Comment Download reader |
| Close |
|
|
|
