Geochemical characteristics from tests of four modern planktonic foraminiferal species in the Indonesian Throughflow region and their implications
Geochemical characteristics from tests of four modern planktonic foraminiferal species in the Indonesian Throughflow region and their implications
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印度尼西亚穿流区四种现代浮游有孔虫物种测试的地球化学特征及其意义
DOI：
10.1016/j.gsf.2018.01.011
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发表时间：
2019-03
影响因子：
8.9
通讯作者：
Jian Xu
中科院分区：
文献类型：
--
作者：
Peng Zhang;Rina Zuraida;Yair Rosenthal;Ann Holbourn;Wolfgang Kuhnt;Jian Xu
浮游有孔虫的测试地球化学是恢复过去海洋水文变化不可缺少的工具。尽管从其他地区建立的测试地球化学影响可以广泛应用，但调查特定地区的测试地球化学影响是必要的。本文研究了印尼川流区浮游有孔虫、球状有孔虫、斜纹有孔虫和新有孔虫4种浮游有孔虫的δ-18O和Mg/Ca的特征。将这些地球化学数据与现代水文剖面进行了比较，以评估它们之间的关系，并调查测试的地球化学参数在恢复国际热带海洋论坛区域过去的海洋学变化方面的潜在影响。这四个物种的钙化深度首先是根据测量的δ18O与根据现代温度和盐度计算的方解石δ18O之间的比较来估计的。结果表明，甘草属植物具有较强的药用价值。球囊状钙分别在0-50微米和20-75微米的混合层内发生钙化，而斜纹有孔虫和球状有孔虫则在75-125微米的温跃层内发生钙化。对过量的镁/钙(实测和预测的镁/钙之差)和盐度的综合研究表明，盐度对ITF地区这些有孔虫物种的测试镁/钙的影响可以忽略不计。测试的镁/钙衍生温度与来自国际热带气旋流动区域海洋的水柱上部200微米的温度剖面的比较也表明了这些物种的钙化深度，这与使用测试δ18O的上述估计很好地匹配。这进一步表明球囊在反映混合层深度的变化方面可能更敏感，突出了球囊之间镁/钙温差的潜在用途。和Sacculiferin重建ITF区混合层的深度。
Test geochemistry of planktonic foraminifera is an indispensable tool in reconstructing past ocean hydrological changes. It is essential to investigate region-specific implications of test geochemistry, although those established from other regions can be broadly applied. In this study, characteristics ofδ18O and Mg/Ca from tests of four planktonic foraminiferal species,Globigerinoides rubersensu stricto (s.s.),Globigerinoides sacculifer,Pulleniatina obliquiloculataandNeogloboquadrina dutertrei,from 60 core-top sediment samples retrieved from the Indonesian Throughflow (ITF) region were studied. These geochemical data were compared with modern hydrographic profiles in order to assess their relations and to investigate potential implications of test geochemical parameters in reconstructing past oceanographic change in the ITF region. Calcification depths of these four species were first estimated based on comparison between measured testδ18O and predicted calciteδ18O that was calculated from modern temperature and salinity. The results indicate thatG. rubers.s. andG. sacculifercalcify within the mixed-layer at 0–50 m and 20–75 m, respectively, whereasP. obliquiloculataandN. dutertreicalcify within the thermocline at around 75 to 125 m. A combined study of excess Mg/Ca (difference between measured and predicted Mg/Ca) and salinity suggests that salinity exerts a negligible impact on test Mg/Ca of these foraminiferal species in the ITF region. Comparison of test Mg/Ca-derived temperatures with temperature profiles of the upper 200 m of the water column from the seas of the ITF region also indicate calcification depths of these species, which match well with the above estimations using testδ18O. It further indicates thatG. sacculifermay be more sensitive in reflecting changes in the depth of the mixed-layer, highlighting a potential use of Mg/Ca temperature difference betweenG. rubers.s. andG. sacculiferin reconstructing the depth of the mixed-layer in the ITF region.
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影响因子：
--
作者：
Y. Rosenthal;G. P. Lohmann
通讯作者：
Y. Rosenthal;G. P. Lohmann
影响因子：
--
作者：
Jun Tian;Pinxian Wang;Ronghua Chen;Xinrong Cheng
通讯作者：
Jun Tian;Pinxian Wang;Ronghua Chen;Xinrong Cheng
影响因子：
4
作者：
Jan F. Schröder;A. Holbourn;W. Kuhnt;K. Küssner
通讯作者：
Jan F. Schröder;A. Holbourn;W. Kuhnt;K. Küssner
DOI：
10.1016/s0031-0182(03)00633-3
发表时间：
2003-12
期刊：
Palaeogeography, Palaeoclimatology, Palaeoecology
影响因子：
--
作者：
S. Mulitza;D. Boltovskoy;B. Donner;H. Meggers;A. Paul;G. Wefer
通讯作者：
S. Mulitza;D. Boltovskoy;B. Donner;H. Meggers;A. Paul;G. Wefer
影响因子：
64.8
作者：
Oppo, Delia W.;Rosenthal, Yair;Linsley, Braddock K.
通讯作者：
Linsley, Braddock K.