ODP Site Survey on Blake-Bahama Outer Ridge

该项目要求支持在选定的布莱克和巴哈马外脊中等水深沉积物漂移地点收集大直径、长(20-30米)的活塞芯，并进行3.5千赫的测量，以与现有的多通道和单通道地震反射数据相结合。这项工作将为这一中纬度地区第四纪晚期的古海洋学提供重要的新数据，因此对大洋钻探计划的目标具有及时的意义。对漂移沉积物进行表征和勘测取样将能够回收高沉积速率的沉积物(可能为8-14厘米/千年)，这些沉积物是分析和解释次轨道尺度全球变化事件的关键。

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.