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

ANDRILL U.S. - 规划研讨会和科学管理：McMurdo Sound Portfolio

• 批准号: 0118665
• 负责人: David Harwood
• 金额: $ 5.98万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-04-15 至 2004-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0118665&HistoricalAwards=false
• 关键词: ANDRILL; U.S.; Planning; Workshop; Science

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).

0118665 Harwood该奖项由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。南极大陆架和深海区的新生代地层记录提供了一个有趣但不完整的古气候、冰盖和构造演化史。由于目前的冰层覆盖，新生代地层暴露不足，需要从岩心中收集地质数据。在过去20年的钻探中，DSDP、ODP以及MSSTS、CIROS和Cape Roberts项目的快速冰钻探都学到了很多东西。一个新的钻井计划，安德里尔，是在早期的发展阶段，与最初的重点在麦克默多声音地区，使用罗伯茨角项目技术。牛津大学的一个讲习班将汇集主要科学家，目的是建立科学目标和国际合作结构，以启动地球科学领域的这一重大举措。罗伯茨角项目的发展遵循了20世纪80年代末和90年代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）获得高分辨率（1至10万年），地震联系，年代约束良好，从南极大陆边缘的地层记录; 2）确定古代冰盖的基本行为，并更好地了解在十年到百万年的时间尺度上驱动冰盖生长和衰退的因素;（3）研究南极冰盖对新生代-近代全球气候、海平面上升和海洋环流的长期和短期作用; 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展，邻近裂谷肩的隆起、火山历史、应力状态和气候的构造作用力。该奖项支持美国参与ANDRILL计划的发展和初始管理，通过美国科学家前往牛津的研讨会，并支付美国订阅ANDRILL前三年的费用。讲习班的成果将通过编写和分发讲习班报告、一份精美的摘要文件和建立一个ANDRILL网站，向南极圈内外的广大地质界散发。 除了支持ANDRILL研讨会之外，还要求提供资金支持美国在ANDRILL方面的工作，包括与ODP、ANTOSTRAT和SHALDRIL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。 最初的钻探目标是在西罗斯海，那里已经提出了八个钻探目标（麦克默多声音组合）。