Collaborative Research: Establishing Quaternary Climate/Terrestrial/Oceanic Linkages in southern Alaska and IODP Site Survey

合作研究：建立阿拉斯加南部第四纪气候/陆地/海洋联系和 IODP 现场调查

• 批准号: 0351620
• 负责人: Sean Gulick
• 金额: $ 8.11万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-05-01 至 2007-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0351620&HistoricalAwards=false
• 关键词: Collaborative; Research; Establishing; Quaternary; Climate

Title: Collaborative Research: Establishing a High-resolution Temporal Record of Quaternary Climate-Glacial-Ocean Linkages in Southern Alaska (an IODP Site Survey)PI/Institution: John Jaeger, Florida; Ross Powell, Northern Illinois University; Joseph Stoner, University of Colorado at Boulder; Sean Gulick, University of Texas Institute of Geophysics; Ellen Cowan, Appalachian State University; Bruce Finney, University of Alaska-FairbanksAbstract:As part of a site survey for a proposed IODP program to drill marine sediments associated with late Cenozoic climate change and tectonic activity along the southern Alaskan margin, the researchers will combine efforts with an already funded piston coring and shallow imaging cruise and will acquire additional piston cores and high-resolution seismic images at proposed Gulf of Alaska drill sites. This region is believed to be analogous to, but have a smaller influence than, the Tibetan plateau in terms of the possible feedback between climate change and tectonics. The coring program has been designed to provide temporal resolution at sub-decadal to millennial time scales and sufficient spatial resolution to capture some of the variability in the provenance of marine sediments derived from glaciated source areas. The researchers will use the recovered core material to constrain the timing of deposition, sediment mixing rates, sediment fluxes, and sediment sources, to infer glacial dynamics, and to characterize basic visual and physical properties. In collaboration with Oregon State University colleagues, they will obtain additional information about paleotemperature, salinity, and oxygen conditions. The researchers will also process the marine seismic data for use in sequence stratigraphic correlations and baseline characterization of the proposed IODP drill sites.

标题：合作研究：建立阿拉斯加南部第四纪气候-冰川-海洋联系的高分辨率时间记录（IODP 现场调查）负责人/机构：John Jaeger，佛罗里达州； 罗斯·鲍威尔，北伊利诺伊大学；约瑟夫·斯托纳 (Joseph Stoner)，科罗拉多大学博尔德分校； Sean Gulick，德克萨斯大学地球物理研究所；埃伦·考恩，阿巴拉契亚州立大学； Bruce Finney，阿拉斯加大学费尔班克斯分校摘要：作为拟议 IODP 项目现场调查的一部分，该项目旨在钻探与阿拉斯加南部边缘晚新生代气候变化和构造活动相关的海洋沉积物，研究人员将与已经资助的活塞取芯项目结合起来和浅层成像巡航，并将在拟议的阿拉斯加湾钻探地点获取额外的活塞芯和高分辨率地震图像。 就气候变化与构造之间可能的反馈而言，该地区被认为与青藏高原类似，但影响较小。 取芯计划旨在提供亚十年至千年时间尺度的时间分辨率和足够的空间分辨率，以捕获来自冰川源区的海洋沉积物来源的一些变化。 研究人员将利用回收的岩心材料来限制沉积时间、沉积物混合速率、沉积物通量和沉积物来源，以推断冰川动力学，并表征基本的视觉和物理特性。 他们将与俄勒冈州立大学的同事合作，获得有关古温度、盐度和氧气条件的更多信息。 研究人员还将处理海洋地震数据，用于层序地层相关性和拟议 IODP 钻探地点的基线表征。