作者简介:贺娟(1980-),女,陕西延安人,讲师,主要从事有机地球化学、古海洋、古环境研究.E-mail:hj08@tongji.edu.cn
收稿日期: 2017-09-06
修回日期: 2017-10-25
网络出版日期: 2018-01-10
基金资助
国家自然科学基金项目“长江口外藻类生物标志化合物氢同位素与海洋盐度关系的研究”(编号:41776049)和“运用叶蜡脂肪酸C-14研究粤西近岸沉积物的来源与运移过程”(编号:41676030)资助
版权
Changes of Paleo-precipitation on the Sunda Shelf Since the Last Glacial Maximum Revealed by Hydrogen and Oxygen Isotopes
First author:He Juan (1980-), female, Yan’an City, Shaanxi Province, Lecturer. Research areas include organic geochemistry, paleoceanography, palaeoenvironment.E-mail:hj08@tongji.edu.cn
Received date: 2017-09-06
Revised date: 2017-10-25
Online published: 2018-01-10
Supported by
Project supported by the National Natural Science Foundation of China “Explore the correlation of hydrogen isotope of alga biomarkers with sea surface salinity off the Yangtze Estuary” (No.41776049) and “Apply the C-14 of leaf wax fatty acid to research the source and migration process of western Guangdong coastal sediments” (No.41676030)
Copyright
贺娟 . 氢氧同位素记录揭示的巽他陆架末次冰期以来古降水量变化[J]. 地球科学进展, 2017 , 32(11) : 1137 -1146 . DOI: 10.11867/j.issn.1001-8166.2017.11.1137
The Sunda Shelf, owing to its unique geographical location and roles, has attracted much attention on its changes during the glacial cycle. At present, there is a consensus about the change of temperature in the region, but the reconstruction of paleo precipitation has been disputed. The hydrogen and oxygen isotope records since the last glacial in the Sunda Shelf were collected, combining with other paleo climate record, we roughly divided the precipitation records in the region into the Northern and Southern areas. During the glacial, the precipitation changed little and climate remained moist in the northern area, while precipitation decreased greatly,and the climate became dry in the southern. Difference in the precipitation isotopes between the northern and southern areas might be related to the different controlling factors of the precipitation isotopes in the two areas and large-scale atmospheric circulation in the region. Limited by the collected hydrogen and oxygen records, the precise mechanism of division in regional hydrological changes of the region still needs more work to confirm.
Key words： The Sunda Shelf; Paleo precipitation; Hydrogen; Oxygen isotope records.
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