ANDRILL U.S. - Planning Workshop and Science Management: McMurdo Sound Portfolio

[01:18665]该奖项由美国国家科学基金会极地项目办公室提供，为美国参与国际南极钻探联盟（ANDRILL）的研讨会和规划活动提供支持。通过钻探从南极洲周围的大陆架和深海地区获得的新生代地层记录，提供了一个有趣但不完整的该地区古气候、冰盖和构造演化历史。由于目前的冰层覆盖，新生代地层暴露的缺乏，需要从钻芯中收集地质数据。在过去的20年里，通过DSDP、ODP以及MSSTS、CIROS和Cape Roberts项目的快冰钻井，我们学到了很多东西。一项新的钻井计划ANDRILL正处于早期开发阶段，最初的重点是在McMurdo海湾地区，使用Cape Roberts项目技术。牛津大学的一个研讨会将把主要科学家聚集在一起，目的是建立科学目标和国际合作结构，以启动这一地球科学领域的重大倡议。在20世纪80年代末和90年代，罗伯茨角项目的发展遵循了类似的研讨会和规划会议的过程。ANDRILL将继续以罗伯茨角项目的成功和方法为基础，但将具有更广泛的时间、空间和主题规模。ANDRILL的主要目标是：1)从南极大陆边缘获得高分辨率（1至10万年）的、与地震相关的、年代学约束良好的地层记录；2)确定古冰盖的基本行为，并在年代际到百万年的时间尺度上更好地了解驱动冰盖生长和衰减的因素；3)研究南极冰盖对全球长、短期新—近代气候、海平面上升和海洋环流的影响；4)记录南极主要裂谷和构造系统的演化和时间，以及相关沉积盆地的地层发育、相邻裂谷肩的隆升、火山历史、应力制度和气候构造强迫。该奖项通过美国科学家前往牛津参加研讨会来支持美国参与ANDRILL项目的发展和初步管理，并支付美国在ANDRILL项目前三年的订费。讲习班的成果将通过编写和散发讲习班报告、一份简明扼要的文件和建立一个ANDRILL网站，分发给南极圈内外更广泛的地质界。除了对ANDRILL研讨会的支持外，还要求提供资金来支持美国在ANDRILL中的工作管理，包括与ODP、ANTOSTRAT和shaldrill倡议的沟通和互动。通过罗伯茨角项目建立的国际合作将在ANDRILL下得到培育和扩大。最初的钻探目标位于西罗斯海，在那里已经提出了8个钻探目标（McMurdo Sound Portfolio）。

0118665 HarwoodThis award, provided by the Office of Polar Programs of the National Science Foundation, provides support for US participation in workshop and planning activities of the international Antarctic Drilling Consortium (ANDRILL). Cenozoic stratigraphic records recovered through drilling from continental shelf and deep-sea areas around Antarctica have provided an interesting yet incomplete history of paleoclimate, ice sheet and tectonic evolution of this region. The paucity of exposures of Cenozoic strata, due to the present ice cover, requires the collection of geological data from drillcores. Much has been learned over the last 20 years of drilling by the DSDP, ODP and via the fast-ice drilling of the MSSTS, CIROS and Cape Roberts projects. A new drilling initiative, ANDRILL, is in an early stage of development, with an initial focus in the McMurdo Sound area, using the Cape Roberts Project technology. A workshop at Oxford University will bring together key scientists with the goal of establishing the scientific objectives and a structure of international collaboration to launch this major initiative in the Earth sciences. The development of the Cape Roberts Project followed a similar course of workshops and planning meetings in the late 1980's and 1990's. ANDRILL will continue to build on the success and approach of the Cape Roberts Project, but will be of broader temporal, spatial, and thematic scale. Major aims of ANDRILL are: 1) to obtain high-resolution (1 to 100 thousand-year), seismically linked, chronologically well-constrained, stratigraphic records from the Antarctic continental margin; 2) to determine the fundamental behavior of ancient ice sheets, and to understand better the factors driving ice sheet growth and decay on decadal to million year time scales; 3) to investigate the role of Antarctic ice sheets on long- and short-order Cenozoic-Recent global climate sea-level elevation and ocean circulation; and 4) to document the evolution and timing of major Antarctic rift and tectonic systems and the stratigraphic development of associated sedimentary basins, uplift of the adjacent rift shoulders, volcanic history, stress regimes and tectonic forcing of climate. This award supports the development and initial management of the U.S. involvement in the ANDRILL Program through the travel of U.S. scientists to the workshop in Oxford and to cover the cost of the U.S. subscription into ANDRILL for the first three years. Results of the workshop will be circulated to the wider geological community, within and beyond the Antarctic sphere, through the production and dissemination of a workshop report, a glossy summary document, and the construction of an ANDRILL web site. In addition to the support for the ANDRILL Workshop, funds are requested to support the management of U.S. efforts in ANDRILL, including the communication and interaction with ODP, ANTOSTRAT, and the SHALDRIL initiative. International collaboration established through the Cape Roberts Project will be nurtured and expanded under ANDRILL. Initial drilling targets are in the Western Ross Sea, where eight drilling objectives have been proposed (the McMurdo Sound Portfolio).