Continuation of Activities for the Support Office for Aerogeophysical Research (SOAR)

该奖项由南极地质与地球物理项目、南极冰川学项目和极地项目办公室的极地研究支持部门联合提供，为航空地球物理研究支持办公室（SOAR）的继续运作提供资金。从1994年7月到2000年7月，根据德克萨斯大学奥斯汀分校和美国国家科学基金会极地项目办公室（NSF/OPP）的协议，SOAR作为一个设施在南极洲完成航空地球物理研究。SOAR公司操作和维护了一个航空地球物理仪器包，该仪器包由一个破冰雷达测深仪、一个激光高度计、一个重力仪和一个磁力计组成，这些仪器与飞机的航空电子设备和动力包紧密结合在一起。飞机和地面GPS接收器阵列支持使用载波相位观测的运动学差分定位。SOAR的活动包括：与NSF/OPP调查员一起开发航空地球物理研究项目；提升航空地球物理仪器套件，以适应新的科学项目和技术进步；部署该仪器包以完成soar开发的项目；对获取的航空地球物理数据进行管理、还原和分析。为了追求9个NSF-OPP资助的航空地球物理研究项目（涉及来自9个机构的14名调查员），SOAR在6年的时间里进行了6次实地考察，在南极洲东部和西部进行了377次飞行，完成了大约20万线公里的航空地球物理测量。该合同支持SOAR公司开展为期一年零八个月的航空地球物理活动项目，这与美国对南极洲地球物理研究的持续支持是一致的。- SOAR将在2000 /01年南方夏季开展一项航空地球物理运动，以完成对两个由SOAR开发的项目的调查：“了解沃斯托克湖环境的边界条件：未来研究的现场调查”（LDEO共同pi的Bell和Studinger）；以及“合作研究：横跨东西南极边界的深层大陆结构的地震调查”（共同主持的Weins，华盛顿和Anandakrishnan，阿拉巴马州）。在麦克默多对调查飞机进行配置和测试后，SOAR将从一个毗邻俄罗斯沃斯托克湖站的nsf支持基地进行调查飞行，并短暂占据南极东部冰盖上的一两个偏远基地。SOAR将减少这些航空地球物理数据，并生成地表高程、地层高程、重力和磁场强度的剖面和地图。这些结果将在实地活动结束后9个月内提供给各自的项目调查员。我们还将提交一份描述这些结果的技术手稿给一个经过评审的科学期刊，并在实地活动完成后大约24个月内将这些结果分发给适当的国家地球物理数据中心。- SOAR将对所有先前减少的SOAR数据产品进行标准化，并在本拨款结束前将其转移到适当的国家地球物理数据中心。- SOAR将召开一次研讨会，为美国未来的南极航空地球物理研究建立共识。该研讨会将由Ian Dalziel和Richard Alley共同召集，并将于2001年春季举行。- SOAR将升级现有的SOAR现场质量控制程序，作为基于web的界面，用于高效浏览许多低级别SOAR数据流。- SOAR将修复和/或翻新2000/01年度战场战役中使用的设备。对SOAR的支持对于完成南极洲的主要地球物理调查至关重要。在科学小组对数据进行解释之后，这些数据将为南极大陆的结构和演化提供有价值的见解。

9911617BlankenshipThis award, provided jointly by the Antarctic Geology and Geophysics Program, the Antarctic Glaciology Program, and the Polar Research Support Section of the Office of Polar Programs, provides funds for continuation of the Support Office for Aerogeophysical Research (SOAR). From July 1994 to July 2000, SOAR served as a facility to accomplish aerogeophysical research in Antarctica under an agreement between the University of Texas at Austin and the National Science Foundation's Office of Polar Programs (NSF/OPP). SOAR operated and maintained an aerogeophysical instrument package that consists of an ice-penetrating radar sounder, a laser altimeter, a gravimeter and a magnetometer that are tightly integrated with each other as well as with the aircraft's avionics and power packages. An array of aircraft and ground-based GPS receivers supported kinematic differential positioning using carrier-phase observations. SOAR activities included: developing aerogeophysical research projects with NSF/OPP investigators; upgrading of the aerogeophysical instrumentation package to accommodate new science projects and advances in technology; fielding this instrument package to accomplish SOAR-developed projects; and management, reduction, and analysis of the acquired aerogeophysical data. In pursuit of 9 NSF-OPP funded aerogeophysical research projects (involving 14 investigators from 9 institutions), SOAR carried out six field campaigns over a six-year period and accomplished approximately 200,000 line kilometers of aerogeophysical surveying over both East and West Antarctica in 377 flights.This award supports SOAR to undertake a one year and 8 month program of aerogeophysical activities that are consistent with continuing U.S. support for geophysical research in Antarctica. - SOAR will conduct an aerogeophysical campaign during the 200/01 austral summer to accomplish surveys for two SOAR-developed projects: "Understanding the Boundary Conditions of the Lake Vostok Environment: A Site Survey for Future Studies" (Co-PI's Bell and Studinger, LDEO); and "Collaborative Research: Seismic Investigation of the Deep Continental Structure Across the East-West Antarctic Boundary" (Co-PI's Weins, Washington U. and Anandakrishnan, U. Alabama). After configuration and testing of the survey aircraft in McMurdo, SOAR will conduct survey flights from an NSF-supported base adjacent to the Russian Station above Lake Vostok and briefly occupy one or two remote bases on the East Antarctic ice sheet.- SOAR will reduce these aerogeophysical data and produce profiles and maps of surface elevation, bed elevation, gravity and magnetic field intensity. These results will be provided to the respective project investigators within nine months of conclusion of field activities. We will also submit a technical manuscript that describes these results to a refereed scientific journal and distribute these results to appropriate national geophysical data centers within approximately 24 months of completion of field activities.- SOAR will standardize all previously reduced SOAR data products and transfer them to the appropriate national geophysical data centers by the end of this grant.- SOAR will convene a workshop to establish a community consensus for future U.S. Antarctic aerogeophysical research. This workshop will be co-convened by Ian Dalziel and Richard Alley and will take place during the spring of 2001.- SOAR will upgrade the existing SOAR in-field quality control procedures to serve as a web-based interface for efficient browsing of many low-level SOAR data streams.- SOAR will repair and/or refurbish equipment that was used during the 2000/01 field campaign.Support for SOAR is essential for accomplishing major geophysical investigations in Antarctica. Following data interpretation by the science teams, these data will provide valuable insights to the structure and evolution of the Antarctic continent.