ODP Site Survey on Blake-Bahama Outer Ridge

布莱克-巴哈马外山脊 ODP 现场勘察

• 批准号: 9217017
• 负责人: Lloyd Keigwin
• 金额: $ 29万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-03-01 至 1996-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9217017&HistoricalAwards=false
• 关键词: ODP; Site; Survey; Blake; Bahama

This project asks for support to collect large-diameter, long (20- 30 m) piston cores at selected Blake and Bahama Outer Ridge intermediate water depth sediment drift sites, and conduct a 3.5 Khz survey to tie into existing multi- and single-channel seismic reflection data. This work will provide significant new data on the paleoceanography of this mid-latitude region in late Quaternary time, and thus is of timely relevance to Ocean Drilling Program objectives. Characterization and reconnaissance sampling of drift deposits will allow the recovery of high deposition rate sediments (likely 8-14 cm/kiloyear) that hold the key to analysis and interpretation of sub-orbital scale global change events.

该项目要求支持在选定的Blake和Bahama Outer Ridge中间水深沉积物漂移点收集大直径，长（20- 30米）活塞岩心，并进行3.5 Khz调查，以结合现有的多通道和单通道地震反射数据。这项工作将为该中纬度地区晚第四纪的古海洋学提供重要的新数据，因此对海洋钻探计划的目标具有及时的相关性。漂移沉积物的表征和侦察采样将允许恢复高沉积速率沉积物（可能为8-14厘米/千万年），这是分析和解释亚轨道尺度全球变化事件的关键。