Corridor Aerogeophysics of the Southeastern Ross Transect Zone: Airborne Gravity

来自海军研究实验室和拉蒙特-多尔蒂地质天文台的研究人员将把航空重力测量与东南罗斯横断面区的机载雷达和航磁走廊航空地球物理(CASERTZ)计划结合起来。该方案将在1990-1991年和1991-1992年田野季节期间对横跨北极山脉和玛丽·伯德陆地之间的两个220×330公里区域进行调查。这项调查将由正常的5x5公里轨道间距组成，旨在确定南极西部埃尔斯沃斯-惠特莫尔地壳块体的运动、火山作用和变形历史，以及该块体的构造与伯德冰下盆地、内罗斯湾和横贯北极山脉的演化的关系。空中重力输入将提高模拟地壳厚度的能力。航空重力系统将由一台改装的BGM-3重力仪和载波相位GPS组成。二次测量源将包括精密压力高度计和原始惯性传感器数据，作为一次测量源的辅助。

Investigators from the Naval Research Laboratory and Lamont- Doherty Geological Observatory will integrate airborne gravity measurement with the combined airborne radar and aeromagnetic Corridor Aerogeophysics of the Southeastern Ross Transect Zone (CASERTZ) program. This program will survey two 220 x 330 km regions between the Transantarctic Mountains and Marie Byrd Land during the 1990-1991 and 1991- 1992 field seasons. The survey will consist of a normal 5 x 5 km track spacing and will be designed to determine the motion, volcanism and deformation history of the Ellsworth- Whitmore crustal block of West Antarctic and the relationship of the tectonics of this block to the evolution of the Byrd Subglacial Basin, the Interior Ross Embayment and the Transantarctic Mountains. The airborne gravimentry will improve the capability to model crustal thickness. The airborne gravity system will consist of a modified BGM- 3 gravimeter and carrier-phase GPS. Secondary measurement sources will include precision pressure altimetry and raw inertial sensor data as aids to the primary measurement sources.