Reconstruction of Tropical Glacial Ocean by Coral Band

为了了解冰川时期珊瑚礁形成的条件，对帕劳群岛的礁前地貌进行了回声测深研究。获得了帕劳群岛、密克罗尼西亚群岛和大堡礁的基本环境条件：海表温度和盐度的时空变化，并研究了这些环境因子与年度波段代用指标的关系。1998年1月以来在密克罗尼西亚帕劳群岛监测了温度和盐度。我们对泻湖的温度和盐度进行了横断面调查。海水每半个月从泻湖取样一次。新引入的带有自动碳酸盐装置的质谱法已被测试其准确性和精密度。在澳大利亚国立大学，我们与研究人员就珊瑚年度波段分析进行了交流。我们对这所大学的稳定同位素和痕量金属分析程序进行了研究。他们的领域是西南太平洋，我们的领域是西北太平洋，我们讨论了这两个地区之间可能的电信联系。

To understand the conditions of coral reef formation during the glacial times, echo-sounding research was conducted on fore-reef landforms in Palau Islands. Basic environmental conditions in Palau Islands, Micronesia and the Great Barrier Reefs were obtained : temporal/spatial changes in sea surface temperature and salinity, and the relation between these environmental factors and annual band proxies were investigated. Temperature and salinity since January, 1998 have been monitored in Palau Islands, Micronesia. We made transect surveys on temperature and salinity in the lagoon. Sea water has been sampled from the lagoon every half month.The newly introduced mass spectrometry with an auto-carbonate device has been tested for its accuracy and precision. At Australian National University, we communicated with the researchers on coral annual band analysis. We investigated the procedures for stable isotope and trace metal analysis at this University. Their field is southwest Pacific and our field is northwest Pacific and we discussed the possible telteconnections between the two areas.