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首页> 外文期刊>Paleoceanography >Sea surface temperatures of the western Arabian Sea during the last deglaciation
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Sea surface temperatures of the western Arabian Sea during the last deglaciation

机译：最后一次冰消期间阿拉伯西部海面的海表温度

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[1] In this study we present a sea surface temperature (SST) record from the western Arabian Sea for the last 20,000 years. We produced centennial-scale delta O-18 and Mg/Ca SST time series of core NIOP929 with focus on the glacial-interglacial transition. The western Arabian Sea is influenced by the seasonal NE and SW monsoon wind systems. Lowest SSTs occur during the SW monsoon season because of upwelling of cold water, and highest SSTs can be found in the low-productivity intermonsoon season. The Mg/Ca-based temperature record reflects the integrated SST of the SW and NE monsoon seasons. The results show a glacial-interglacial SST difference of similar to 2 degrees C, which is corroborated by findings from other Arabian Sea cores. At 19 ka B. P. a yet undescribed warm event of several hundred years duration is found, which is also reflected in the delta O-18 record. A second centennial-scale high SST/low delta O-18 event is observed at 17 ka B. P. This event forms the onset of the stepwise yet persistent trend toward Holocene temperatures. Highest Mg/Ca-derived SSTs in the NIOP929 record occurred between 13 and 10 ka B. P. Interglacial SST is similar to 24 degrees C, indicating influence of upwelling. The onset of Arabian Sea warming occurs when the North Atlantic is experiencing minimum temperatures. The rapid temperature variations at 19, 17, and 13 ka B. P. are difficult to explain with monsoon changes alone and are most likely also linked to regional hydrographic changes, such as trade wind induced variations in warm water advection.
机译：[1]在这项研究中，我们提供了过去20,000年以来阿拉伯西部海域的海表温度（SST）记录。我们制作了核心NIOP929的百年尺度三角洲O-18和Mg / Ca SST时间序列，重点研究了冰冰间转换。阿拉伯海西部受到东北和西南季风风季节的影响。在西南季风季节，由于冷水上升，SST最低，而在生产力低的季风季节，SST最高。基于镁/钙的温度记录反映了西南风和东北风季风的综合海温。结果表明，冰与冰间的SST差异接近2摄氏度，其他阿拉伯海岩心的发现也证实了这种差异。在19 ka B. P.，发现了持续时间长达数百年的尚未描述的温暖事件，这也反映在三角洲O-18记录中。在17 ka B. P处观测到第二个百年尺度的高SST /低三角洲O-18事件。该事件形成了全新世逐步但持续的趋势的开始。 NIOP929记录中最高的源自Mg / Ca的SST发生在13和10 ka B之间。P.冰川间的SST类似于24摄氏度，表明上升的影响。当北大西洋处于最低温度时，阿拉伯海开始变暖。仅在19、17和13 ka B. P.处的快速温度变化很难用季风变化来解释，而且很可能还与区域水文变化有关，例如贸易风引起的温水平流变化。

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