globalchange  > 过去全球变化的重建
DOI: 10.1016/j.palaeo.2017.07.026
论文题名:
Glacial to Holocene changes in sea surface temperature and seawater δ18O in the northern Indian Ocean
作者: Raza T.; Ahmad S.M.; Steinke S.; Raza W.; Lone M.A.; Beja S.K.; Suseela G.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2017
语种: 英语
英文关键词: Arabian Sea ; Bay of Bengal ; Mg/Ca ratio ; Planktic foraminifera
英文摘要: Sea surface temperature (SST) and seawater δ18Osw records were generated from sediment cores located in the southern Bay of Bengal (SBOB) and the northeastern Arabian Sea (NEAS) to understand glacial to Holocene changes in the hydrography of these regions. This was accomplished through the use of paired δ18O and Mg/Ca measurements in planktic foraminifera (Globigerinoides ruber) from two sediment cores; SK157-14 in the SBOB (lat. 5°11'N; long. 90°05'E; water-depth 3306m) and SK148-21 in the NEAS (lat. 21°29'N, long. 67°01'E; water-depth 1900m). The results suggest significant changes in SST and δ18Osw since last glacial period. The glacial SSTs in the SBOB and the NEAS were lower by ~2-2.5°C relative to the Holocene. The deglacial period in both cores is characterized by significant variations in SSTs and seawater δ18Osw. The Dansgaard-Oeschger (DO) cycles and Heinrich events are strongly expressed in SST and δ18Osw records of the SBOB core. These records support a strong control of atmospheric-oceanic changes in the northern high latitude on thermal state of the SBOB. The SST time series in both these regions indicates a sudden and abrupt increase in temperature at the end of last glacial maximum. The SST time series in the NEAS core SK 148-21 reveals an intensification of the northeast monsoon during the last glacial maximum. © 2017 Elsevier B.V.
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被引频次[WOS]:23   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/68157
Appears in Collections:过去全球变化的重建

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作者单位: CSIR, National Geophysical Research Institute, Uppal Road, Hyderabad 500 007, India; CSIR, National Institute of Oceanography, Dona Paula, Goa 403004, India; Department of Geological Oceanography, Xiamen University, Xiamen, China; High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei 10617, Taiwan, ROC; Center for Marine Environmental Sciences (MARUM), Bremen, Germany

Recommended Citation:
Raza T.,Ahmad S.M.,Steinke S.,et al. Glacial to Holocene changes in sea surface temperature and seawater δ18O in the northern Indian Ocean[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2017-01-01
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