Corridor Aerogeophysics of the Southeastern Ross Transect Zone (CASERTZ), Antarctica

南极洲东南罗斯横断带 (CASERTZ) 走廊航空地球物理

• 批准号: 8919663
• 负责人: Steven Hodge
• 金额: $ 15.4万
• 依托单位: Geological Survey-Tacoma
• 依托单位国家: 美国
• 项目类别: Interagency Agreement
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-03-01 至 1993-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8919663&HistoricalAwards=false
• 关键词: Corridor; Aerogeophysics; Southeastern; Ross; Transect

This award will support a combined airborne radar and aeromagnetic survey of two 220 x 330 km regions between the Transantarctica Mountains and Marie Byrd Land during the 1990-91 and 1991-92 field seasons. These efforts will address significant problems identified in the Ross Transect Zone (RTZ) by the National Academy of Sciences (1986) report "Antarctic Solid Earth Sciences Research," and by the report to NSF "A Plan for a United States Program to Study the Structure and Evolution of the Antarctic Lithosphere (SEAL)." The surveys will be flown using the NSF/TUD radar and an areomagnetics system mounted in a light aircraft. The grid spacing will be 5 km and navigation will be by radiopositioning. In addition to maps of subglacial topography and magnetic intensity, attempts will be made to reconstruct the position of subglacial diffractors in three dimensions. This reconstruction should give new information about the distribution of escarpments and therefore the tectonic relationships within the region, especially when combined with the magnetic results. These experiments will be conducted by the Byrd Polar Research Center of the Ohio State University and the Water Resources and Geological Divisions of the U.S. Geological Survey.

该合同将支持在1990-91年和1991-92年野外季节期间对横贯北极山脉和玛丽·伯德陆地之间的两个220×330公里区域进行机载雷达和航空磁力联合调查。这些努力将解决美国国家科学院(1986)报告《南极固体地球科学研究》以及提交给NSF的报告《美国研究南极岩石圈结构和演化计划(SEAL)》中确定的罗斯样带(RTZ)中的重大问题。这些调查将使用NSF/TUD雷达和安装在轻型飞机上的航磁系统进行飞行。网格间距将为5公里，导航将通过无线电定位。除了冰下地形图和磁场强度图外，还将尝试重建冰下衍射体的三维位置。这种重建应该会提供有关悬崖分布的新信息，从而提供该地区内部构造关系的新信息，特别是当结合磁学结果时。这些实验将由俄亥俄州立大学伯德极地研究中心和美国地质调查局水资源和地质部进行。