SHALDRIL II: Workshop on Shallow Drilling Systems for U.S. Antarctic Program

*9873071该奖项由美国国家科学基金会极地计划办公室提供，用于支持海洋地质学家委员会继续开展活动，该委员会被命名为SHALDRIL II(用于“浅层钻探”)，以调查在美国南极计划(USAP)船只上进行浅层钻探作业的技术可行性，以支持科学研究。对南极大陆边缘的古气候和古环境记录进行浅层钻探已在许多地点被确定为非常重要。这些记录对于构建冰盖进退模型和限制从最早的新生代(6500万年前)到最近的古气候条件至关重要。SHALDRIL(浅层钻探)委员会于1996年开始工作，作为其他以社区为基础的南极地质规划工作的分支。在前一个研讨会的支持下，委员会委托一名专业工程师对可用钻井系统及其在USAP船舶上使用的适宜性和兼容性进行了技术评估。这项评估的结果于1998年2月28日在佛罗里达州立大学举行的一次会议上公布。工程报告对现有和正在开发的舰载钻井技术进行了广泛的调查，主要结论是，目前美国船只上不能部署现有的钻井系统，但有两个有希望的系统将在来年(1998年)由其制造商进行现场测试。然而，除此之外，还有其他系统可供第三方船只--基本上是专门的钻井船--用于南极工作。因此，SHALDRIL委员会的结论是，最好的行动方针是继续观察和评估有希望的钻井系统的技术发展。此外，委员会决定对浅海钻探的潜在区域进行进一步评估，目的是更详细地规定各种环境(地理区域、水深、冰情等)中适用的科学钻探目标类别。在南极边缘附近。委员会打算继续其工作，以便在1998年的实地测试完成后举行一次后续讲习班会议。委员会继续与社区中的个人和团体互动，以确保钻探的科学观点和理由尽可能完整。讲习班将于1998年年底至1999年年中举行。***

*** 9873071 This award, provided by the Office of Polar Programs of the National Science Foundation, supports the continuation of activities of a committee of marine geologists, designated SHALDRIL II (for "shallow drilling"), to investigate the technical feasibility of conducting shallow drilling operations from US Antarctic Program (USAP) vessels in support of scientific research. Shallow drilling for paleoclimatic and paleoenvironmental records on the Antarctic continental margins has been identified in a number of venues as being of high importance. These records are essential for constructing models of ice sheet advance and retreat and for constraining paleoclimatic conditions from the earliest Cenozoic (65 million years ago) to the very recent past. The SHALDRIL (shallow drilling) Committee began work in 1996 as an offshoot of other community based Antarctic geology planning efforts. With support from a previous workshop award, the committee commissioned a technical evaluation, by a professional engineer, of available drilling systems and their suitability and compatibility for use on USAP ships. The results of this evaluation were presented at a meeting held at Florida State University on February 28, 1998. The engineering report represented an extensive investigation of existing and developing ship-based drilling technology with the main conclusion being that no extant drilling systems could be deployed on US vessels at present, but that two promising systems were to undergo field testing by their manufacturers during the coming year (1998). In addition, however, there were other systems available that could be used by third party ships, essentially specialized drilling ships, for Antarctic work. The SHALDRIL Committee concluded, therefore, that the best course of action was to continue to observe and evaluate the technical development of promising drilling systems. Furthermore, the Committee determined to undertake further assessments of potential areas for shallow dri lling, with the goal of specifying in more detail categories of suitable scientific drilling targets in various settings (geographic region, water depth, ice conditions, etc.) around the Antarctic margin. The committee intends to continue its work with the intention of holding a follow-up workshop meeting after the field tests during 1998 are completed. The Committee continues to interact with individuals and groups in the community to ensure that the scientific perspectives and rationale for drilling are as complete as possible. The workshop will occur between late 1998 and mid 1999. ***