Airborne geophysical survey: Copper River '55

Aeromagnetic data were collected along flight lines by instruments in an aircraft that recorded magnetic-field intensity values and location. In surveys such as this...航空磁测数据由机载仪器沿飞行航线采集，记录了磁场强度数值与位置信息。在诸如此类的勘探作业中……