Integrated Biostratigraphy and High Resolution Seismic Stratigraphy of the Ross Sea: Implication for Cenozoic Eustatic and Climatic Changes

该奖项支持对罗斯海大陆架冰川-海洋地层学进行综合地震、沉积学和古生物学研究。本研究的目的是获取冰川沉积物的地震图像和沉积物岩心，以便更好地了解罗斯海地区新生代的冰川历史。这项研究将利用高分辨率地震剖面数据来定位更新世冰川薄或可能不存在的地区。在这些位置的活塞取心，如果钻透，将提供新生代沉积环境的沉积记录，并可能为南极冰盖的波动提供重要线索。地震剖面将提供更新世期间罗斯冰架接地历史的直接记录，也将允许以活塞岩心中恢复的沉积物为代表的新生代沉积单元的一级相关性。这项工作将为南极西部冰原和南极东部冰原的历史提供重要的代理记录，而这反过来又将为气候模式提供重要的约束。

This award supports an integrated seismic, sedimentologic, and paleontologic investigation of glacio-marine stratigraphy of the Ross Sea continental shelf. The purpose of this work is to acquire seismic images and sediment cores of the glacial sediments toward a better understanding of the Cenozoic history of glaciation in the Ross Sea region. This investigation will utilize high resolution seismic profiling data to locate regions where the Pleistocene glacial till is thin or perhaps absent. Piston coring at these locations, if the till is penetrated, will provide sedimentary records of Cenozoic depositional environments and could provide important clues to fluctuations of the Antarctic Ice Sheets. The seismic profiling will provide a direct record of the grounding history of the Ross Ice Shelf during the Pleistocene and it will also allow first order correlations of Cenozoic sedimentary units that are represented by sediments recovered in the piston cores. This work will provide important proxy records of the history of both the West Antarctic Ice Sheet and the East Antarctic Ice Sheet and this, in turn, will provide important constraints to climate models.