EAGER: Exploring Scientific Drilling in Lake Towuti, Indonesia: Paleoclimate, Biological Evolution, and Geomicrobiology in tropical Pacific lake

建议对印度尼西亚最大的湖泊——南苏拉威西的Towuti湖进行探索性多通道地震反射调查。来自图乌提湖的现有地震反射数据表明，在图乌提湖中存在多达150层的湖泊沉积物，覆盖在更深的河流和湖泊沉积物上。这些较深的沉积物可能记录了印度尼西亚中部更新世中晚期的水文历史，但在目前的数据集中很难得到解决。总体目标是通过多通道地震反射调查为该盆地生成地震地层格架，为中更新世以来苏拉威西中部的气候和地质演化提供新的见解。这些数据还将提供基本的地震地层结构，在此基础上，我们将建立一个大型的跨学科项目，从Towuti湖获得长钻芯，以调查更新世期间印度尼西亚中部的气候、环境和生物进化。印度-太平洋地区拥有地球上最大的温水池，印度-太平洋地区的降雨变化通过地球的变化影响全球气候。大气环流。尽管这个地区？但是，我们对它的长期气候和环境演变知之甚少。印度尼西亚位于印度-太平洋的中心，拥有众多湖泊，这些沉积物记录了该地区的情况。美国的环境和气候历史。该提案旨在对印度尼西亚最大的湖泊托乌提湖的沉积物进行地球物理表征。具体来说，该项目将描述该湖泊自更新世中期或过去150万年以来的沉积性质和沉积历史。这项工作将为该地区提供新的见解？美国的气候、生物和地质历史。

Proposed is an exploratory multichannel seismic reflection survey of Lake Towuti, South Sulawesi, the largest lake in Indonesia. Existing seismic reflection datasets from Lake Towuti indicate the presence of up to 150 of lacustrine sediment in Lake Towuti overlying a deeper package of fluvial and lacustrine sediment. These deeper sediments potentially record the middle to late Pleistocene hydrologic history of central Indonesia, but are poorly resolved in current datasets. The overarching goal is to generate a seismic-stratigraphic framework for this basin through multichannel seismic reflection surveys to provide new insight into the climatic and geological evolution of central Sulawesi since the mid-Pleistocene. These data will also provide the fundamental, seismic-stratigraphic architecture upon which to will build a large, interdisciplinary project to obtain long drill cores from Lake Towuti to investigate climatic, environmental, and biological evolution in central Indonesia during the Pleistocene. The Indo-Pacific region contains the largest pool of warm water on Earth, and variations in rainfall over the Indo-Pacific impact global climate through changes in the Earth?s atmospheric circulation. Despite this region?s importance, we know very little about its long-term climatic and environmental evolution. Indonesia sits at the heart of the Indo-Pacific and hosts numerous lakes, the sediments in which record the region?s environmental and climate history. This proposal aims to geophysically characterize the sediments of Lake Towuti, the largest lake in Indonesia. Specifically, the project will characterize the nature and history of sedimentation in this lake since the mid-Pleistocene, or the last 1.5 million years. This work will provide new insight into this region?s climatic, biological, and geological history.