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.

提议是对印度尼西亚最大的湖泊南苏拉威西湖的探索性多通道地震反射调查。现有的地震反射数据集来自托特湖（Lake Towuti），这表明在塔托蒂湖（Lake Towuti）中最多有150个湖泊沉积物，上面覆盖了更深层次的河流和湖泊沉积物。 这些更深的沉积物可能会记录印度尼西亚中部更新世的中期和晚期的水平历史，但在当前数据集中已经解决了很差的解决方案。 总体目标是通过多通道地震反射调查为该盆地生成一个地震 - 地层框架，以提供自临时苏拉维西中部的气候和地质演化的新见解。 这些数据还将提供基本的，地震 - 地层建筑，在此建筑上将建立一个大型的跨学科项目，以从陶氏湖获得长钻核，以研究更新世期间印度尼西亚中部的气候，环境和生物学进化。 印度太平洋地区包含地球上最大的温水池，以及通过地球大气循环的变化，印度太平洋影响全球气候的降雨变化。 尽管这个地区很重要，但我们对其长期气候和环境发展知之甚少。 印度尼西亚位于印度太平洋的核心，并拥有许多湖泊，这些湖泊记录了该地区的环境和气候历史。 该提案旨在以地球运动来描述印度尼西亚最大的湖泊托图蒂湖的沉积物。具体而言，该项目将以自普莱森二世或过去150万年以来该湖中沉积的性质和历史来表征。 这项工作将为该地区的气候，生物学和地质历史提供新的见解。