Late Quaternary development, architecture, and paleoecology of Rasdhoo Atoll, Maldives, Indian Ocean

拟议研究的目的是重建自上一次冰川盛期以来马尔代夫拉什杜环礁的发展情况，包括其礁岛。由于马尔代夫过去几千年来几乎没有任何关于珊瑚礁和岛屿发展的数据，因此建议使用便携式液压钻机在拉斯杜环礁的边缘和泻湖珊瑚礁上钻10-15个浅岩心孔，直至目前海平面以下25米。可以使用标准的C14和/或U/Th方法来确定所获得的岩芯上的珊瑚的年龄以及岩石本身。优先对浅水珊瑚进行年代测定，目的是从不同深度获取大量海平面数据。有了这些数据，就有可能评估环礁和岛屿发展的控制因素的影响，如海平面波动和下伏冰期岛屿的先期地形。这些数据还将使人们能够根据全球变暖和全球海平面上升的情况对珊瑚礁和礁岛的未来发展做出预测。

The aim of the proposed study is to reconstruct the development of the Maldivian atoll of Rasdhoo including its reef islands since the last glacial maximum. As there exists hardly any data on reef and island development in the Maldives during the past several thousand years, it is proposed to drill 10-15 shallow coreholes on the marginal and lagoonal reefs of Rasdhoo atoll down to 25 m below present sea-level using a portable hydraulic drill. The age of corals along the rock cores obtained as well as the rock itself can be determined using the standard C14- and/or U/Th methods. Preferentially, shallow-water corals will be dated with the intention to get a large number of sea-level data from different depths. With these data, it will be possible to evaluate the influence of controlling factors of atoll and island development such as sea-level fluctuations and antecedent topography of the underlying ice-age islands. These data will also allow to make predictions for the future development of reefs and reef islands in the light of global warming and the rise in global sea-level.