Trans-Equatorial Pacific Climate Change Over the Last Millenium Cd, 0-18, C-13 and Growth Variability in Corals on Seasonal-to-Centennial Timescales

厄尔尼诺气候变化的研究因我们对其发生的短暂历史记录而受到阻碍。幸运的是，厄尔尼诺现象造成的海洋化学和温度变化被记录在活珊瑚的化学中。由于珊瑚会分泌年生长带，记录其化学成分的变化可以为我们提供手段，通过珊瑚的生命周期(长达300年)重建厄尔尼诺现象发生的历史。这项研究计划的目标是从西太平洋(塔拉瓦是)的带状珊瑚重建这一古气候历史。和东太平洋(加拉帕戈斯是)。该项目涉及到每个岛屿的实地方案，以采集珊瑚样本，然后对珊瑚生长带的微量元素和稳定同位素化学进行实验室分析。这项研究将有助于我们理解厄尔尼诺现象的历史、发生频率和气候意义。

The study of El Nino climate changes is hampered by our short historical record of their occurrence. Fortunately the changes in ocean chemistry and temperature that are produced by El Nino are recorded in the chemistry of living corals. And since corals secrete annual growth bands, the record of their changing chemistry can provide us with the means to reconstruct the history of El Nino occurrence back through the life span of coral (up to about 300 years). The goal of this research program is to reconstruct this paleoclimate history from banded corals in the western Pacific (Tarawa Is.) and eastern Pacific (Galapagos Is.). The project involves field programs to each island to sample the coral, followed by laboratory analyses of the trace element and stable isotopic chemistry of the coral growth bands. This study will contribute to our understanding of the history, frequency of occurrence, and climatic significance of El Nino phenomena.