SEA-SURFACE TEMPERATURE FROM CORAL SKELETAL STRONTIUM CALCIUM RATIOS
SEA-SURFACE TEMPERATURE FROM CORAL SKELETAL STRONTIUM CALCIUM RATIOS
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DOI：
10.1126/science.257.5070.644
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发表时间：
1992-07-31
期刊：
影响因子：
56.9
通讯作者：
HENIN, C
中科院分区：
文献类型：
--
作者：
BECK, JW;EDWARDS, RL;HENIN, C
利用热电离质谱法对珊瑚锶/钙比率进行高精度测量，可以得到过去10（5）年热带海表温度的季节性记录。这些比率的温度依赖性进行了校准与珊瑚收集在SST记录站和O-18/O-16测温。结果表明，月平均SST可以确定的表观精度优于0.5 ℃。对珊瑚化石的测量表明，10,200年前，太平洋西南部瓦努阿图附近的年平均SST比今天低5摄氏度，SST的季节变化更大。这些数据表明，热带气候带在冰川消退期间被压缩向赤道。
Seasonal records of tropical sea-surface temperature (SST) over the past 10(5) years can be recovered from high-precision measurements of coral strontium/calcium ratios with the use of thermal ionization mass spectrometry. The temperature dependence of these ratios was calibrated with corals collected at SST recording stations and by O-18/O-16 thermometry. The results suggest that mean monthly SST may be determined with an apparent accuracy of better than 0.5-degrees-C. Measurements on a fossil coral indicate that 10,200 years ago mean annual SSTs near Vanuatu in the southwestern Pacific Ocean were about 5-degrees-C colder than today and that seasonal variations in SST were larger. These data suggest that tropical climate zones were compressed toward the equator during deglaciation.