Airborne geophysical survey: Susitna 2012

A high sensitivity fixed-wing magnetic airborne survey was carried out for U.S. Geological Survey (Client) from Skwentna Roadhouse, AK, USA, over the survey blocks known as: Sustina (A1), and Add-On. New-Sense Geophysics Ltd. (NSG) flew the survey under the terms of an agreement with Client dated September 7th, 2012. The survey was flown between October 11th and November 1st, 2012. A total of 10,827* line kilometers of field magnetic data were flown, collected, processed and plotted. Sustina (A1) Block: 7,700 km; Add-On Block: 3,127 km. The primary geophysical sensor was a high-sensitivity Cesium-3 magnetometer, mounted in a fixed tail stinger assembly. Airborne ancillary equipment included; iCAM (digital video recorder), iDAS data acquisition system, fluxgate magnetometer, radar altimeter, and global positioning system (GPS) receiver. The GPS system provided accurate real-time navigation and subsequent flight path recovery. Ground equipment included; high-sensitivity Cesium-3 magnetometer, iBASE data acquisition system, global positioning system (GPS) receiver, and PC-based field workstation. The GPS receiver was used for time synchronization with airborne data. The field computer was used to check the data quality and completeness on a daily basis.

为美国地质调查局（U.S. Geological Survey）开展了一次高灵敏度固定翼航空磁测作业，作业起始点为美国阿拉斯加州斯昆特纳罗德豪斯（Skwentna Roadhouse, AK, USA），覆盖测区包括萨斯蒂纳（Sustina，A1）区块与增补（Add-On）区块。新传感地球物理有限公司（New-Sense Geophysics Ltd.，NSG）依据2012年9月7日与委托方签订的协议执行本次航空磁测飞行作业。作业时段为2012年10月11日至11月1日，累计完成10,827*测线公里的野外磁测数据采集、处理与成图，其中萨斯蒂纳（A1）区块测线长度7,700公里，增补区块测线长度3,127公里。
本次作业的核心地球物理传感器为高灵敏度铯-3磁力仪，安装于固定尾刺组件中。航空配套设备包括：iCAM数字录像机、iDAS数据采集系统、磁通门磁力仪、雷达高度计及全球定位系统（GPS）接收机。GPS系统可提供高精度实时导航功能，并支持后续航迹回放。
地面配套设备包括：高灵敏度铯-3磁力仪、iBASE数据采集系统、全球定位系统（GPS）接收机以及基于个人计算机的野外工作站。GPS接收机用于实现航空数据与地面系统的时间同步。野外计算机用于每日核查数据质量与采集完整性。