| XU Yonghang,WANG Liang,LAI Zhikun,XU Xiaohui,WANG Feng,LIU Shengfa,SHI Xuefa,TROA Rainer Arief,ZURAIDA Rina,TRIARSO Eko,HENDRIZAN Marfasran. 2019. The biogenic silica variation and paleoproductivity evolution in the eastern Indian Ocean during the past 20 000 a. Acta Oceanologica Sinica, 38(1):78－84 |
| The biogenic silica variation and paleoproductivity evolution in the eastern Indian Ocean during the past 20 000 a |
| 东印度洋近20 ka以来的生物硅记录及其古生产力意义 |
| Received:October 27, 2017 |
| DOI：10.1007/s13131-019-1372-z |
| Key words:biogenic silica paleoproductivity Sunda Strait eastern India Ocean |
| 中文关键词: 生物硅 古生产力 巽他海峡 东印度洋 |
| 基金项目:The National Programme on Global Change and Air-sea Interaction under contract Nos GASI-GEOGE-06-03 and GASI-02-IND-CJ01; the China-Indonesia Joint Project under contract No. "BENTHIC"; the Third Institute of Oceanography, Ministry of Natural Resources Research Grant under contract No. 2015015. |
| Author Name | Affiliation | E-mail | | XU Yonghang | Laboratory of Ocean and Coast Geology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | xuyonghang@tio.org.cn | | WANG Liang | Laboratory of Ocean and Coast Geology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | LAI Zhikun | Laboratory of Ocean and Coast Geology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | XU Xiaohui | Laboratory of Ocean and Coast Geology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | WANG Feng | Laboratory of Ocean and Coast Geology, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China | | | LIU Shengfa | Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China | | | SHI Xuefa | Laboratory for Marine Geology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China | | | TROA Rainer Arief | Marine Research Center, Agency of Research and Human Resources for Marine and Fisheries, Jakarta 14420, Indonesia | | | ZURAIDA Rina | Marine Geological Institute, Agency for Research and Development for Energy and Mineral Resources, Bandung 40174, Indonesia | | | TRIARSO Eko | Marine Research Center, Agency of Research and Human Resources for Marine and Fisheries, Jakarta 14420, Indonesia | | | HENDRIZAN Marfasran | Research Center for Geotechnology, Indonesia Institute of Sciences, Bandung 40135, Indonesia | |
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| Abstract: |
| The biogenic silica of sediment samples from Core CJ01-185 which is collected from the eastern India Ocean off the Sunda Strait is analyzed to evaluate the impact of the opening of the Sunda Strait on a paleoproductivity evolution. The new results indicate that the biogenic silica mass values of Core CJ01-185 show the lowest 0.86% in the last glacial period, and reach its maxima of 1.89% in the late Holocene. Furthermore, the biogenic silica mass accumulation rate (MARBSi) values also vary with much higher during the late Holocene than during the last glaciation. The input of additional terrigenous materials from the Java Sea has enhanced the paleoproductivity and increased the biogenic silica mass and MARBSi values after the opening of the Sunda Strait. It is suggested that the paleoproductivity in the study area is mainly influenced by the southeast monsoon and upwelling before the opening of the Sunda Strait. However, the paleoproductivity is dominated by the terrigenous materials input other than by the southeast monsoon or upwelling in the Holocene. |
| 中文摘要: |
| 通过对东印度洋钻孔CJ01-185的生物硅来探讨东印度洋古生产力的变化和古气候演化的响应。CJ01-185钻孔的生物硅含量在末次冰期最低，为0.86%；而到了全新世晚期生物硅含量达到1.89%。全新世晚期生物硅的堆积速率明显大于末次冰期。随着全新世海平面的快速上升，巽他海峡贯通，来自爪哇海的陆源物质输入到东印度洋，导致全新世的生物硅含量和生物硅的堆积速率增加。研究表明：巽他海峡贯通前，研究区的古生产力主要受东南季风变化和上升流的活动影响；而巽他海峡贯通后，古生产力很明显受到陆源物质输入的控制，东南季风变化和上升流的影响较弱。 |
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