A multicoral calibration method to approximate a universal equation relating Sr/Ca and growth rate to sea surface temperature
A multicoral calibration method to approximate a universal equation relating Sr/Ca and growth rate to sea surface temperature
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一种多珊瑚校准方法，用于近似将 Sr/Ca 和生长速率与海面温度相关的通用方程
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发表时间：
2007
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通讯作者：
A. Cohen
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作者：
N. Goodkin;K. Hughen;A. Cohen
[1]结合锶钙比（Sr/Ca）的平均年增长率在百慕大Diploria crystiformis（脑珊瑚），以提高海表温度（SST）校准相对于仪器数据。生长校正Sr/Ca-SST校准的基础上，在同一校准间隔的单珊瑚殖民地，但是，被发现是不适合应用于不同的珊瑚殖民地的数据。这引起了人们对从化石珊瑚测量重建SST的准确性的关注，因为这些测量涉及超出校准期间所见值范围的外推。在这里，我们追求一种新的方法来解决这个问题，将数据从多个珊瑚殖民地到一个单一的增长校正Sr/Ca-SST校准方程，有效地扩大了现代值的范围约束模型。使用多菌落校准模型重建SST产生更大的精度和准确性相对于仪器数据比单菌落模型，提供更大的信心应用于化石珊瑚样本。
[1] Combining strontium-to-calcium ratios (Sr/Ca) with mean annual growth rates in Bermuda Diploria labyrinthiformis (brain corals) is shown to improve sea surface temperature (SST) calibrations relative to instrumental data. Growth-corrected Sr/Ca–SST calibrations based on single-coral colonies over the same calibration interval, however, are found to be poorly suited for application to data from different coral colonies. This raises concerns about the accuracy of SST reconstructions from fossil coral measurements that involve extrapolation beyond the range of values seen during the calibration period. Here we pursue a novel approach to this problem by incorporating data from multiple coral colonies into a single growth-corrected Sr/Ca–SST calibration equation, effectively expanding the range of modern values constraining the model. The use of a multiple-colony calibration model for reconstructing SST yields greater precision and accuracy relative to instrumental data than single-colony models, providing greater confidence for applications to fossil coral samples.