Collaborative Research: The Architecture and Paleoceanograpy of North Atlantic Sediment Drifts - Seismic Profiling, Swath Mapping, and Coring

摘要世界上大部分深海水在北大西洋北方及其邻近地区获得其化学和物理特性。 地表水在北大西洋下沉，向南流动，与其他深水来源混合，形成所谓的全球输送带。这种深水流侵蚀沉积物，并最终将其沉积在大型漂流沉积物中。这些沉积物记录了深水形成的历史，这在很大程度上反映了地球气候的变化，本项目将详细研究北大西洋两个大型漂流沉积物的地震结构。该项目的具体方面是获取地震反射数据，用以解释漂流物形成的早期历史，并研究形成和改变漂流物沉积物的现代过程。这些数据将提供关于这些漂流物的重要新信息，也将用于规划未来的钻探，以直接对漂流物沉积物进行采样。这是一项合作研究，涉及拉蒙特-多尔蒂地球天文台，罗格斯大学和米德尔伯里学院的研究人员。 实地数据将在2002年年中Knorr号考察船的一次航行中获得。

Mountain, Manley, Wright proposalsOCE-0095254 AbstractMuch of the world's deep ocean water acquires its chemical and physical characteristics in the northern North Atlantic and adjacent regions. Surface water sinks in the North Atlantic and flows southward to mix with other sources of deep water in what is known as the global conveyor belt. This deep water flow erodes sediment and ultimately deposits it in large drift deposits. These deposits record the history of deep water formation, which in large part reflects changes in the earth's climate.The present project will undertake a detailed study of the seismic architecture of two large drift deposits in the North Atlantic. Specific aspects of the project are to obtain seismic reflection data with which to interpret the early history of drift formation and to examine modern processes that shape and modify the drift deposits. These data will provide critical new information on these drifts and will also be used in planning future drilling to sample drift sediments directly. This is a cooperative study involving investigators at Lamont-Doherty Earth Observatory, Rutgers University, and Middlebury College. Field data will be acquired on a cruise of the RV Knorr in mid-2002.