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

EAGER：探索印度尼西亚托乌提湖的科学钻探：热带太平洋湖泊的古气候、生物进化和地球微生物学

• 批准号: 1248187
• 负责人: James Russell
• 金额: $ 9.01万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1248187&HistoricalAwards=false
• 关键词: EAGER; Exploring; Scientific; Drilling; Lake

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.

建议对印度尼西亚最大的湖泊南苏拉威西的Towuti湖进行勘探性多道地震反射调查。Towuti湖现有的地震反射数据集表明，Towuti湖存在多达150的湖泊沉积物，覆盖着更深的河流和湖泊沉积物。 这些更深的沉积物可能记录中晚更新世水文历史的印度尼西亚中部，但在目前的数据集解决得很差。 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框架，以提供对中更新世以来苏拉威西岛中部气候和地质演变的新见解。 这些数据还将提供基本的地震地层结构，在此基础上将建立一个大型的跨学科项目，从Towuti湖获得长岩芯，以调查更新世期间印度尼西亚中部的气候，环境和生物演变。 印度洋-太平洋地区拥有地球上最大的暖水池，印度洋-太平洋地区降雨量的变化通过地球的变化影响全球气候？s大气环流。 尽管这一地区？虽然它的重要性，但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洋-太平洋的中心，拥有众多湖泊，其中的沉积物记录了该地区？环境和气候的历史。 该提案旨在对印度尼西亚最大的湖泊Towuti湖的沉积物进行生物学表征。具体而言，该项目将描述自中更新世以来，或过去150万年来该湖泊沉积的性质和历史。 这项工作将提供新的见解，这一地区？的气候，生物和地质历史。