Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas

Flight-line data release for a helicopter electromagnetic (HEM) and magnetic geophysical survey flown in early December 2003, in Northern Bexar County, Texas. The...本数据集为2003年12月上旬于美国德克萨斯州贝尔县北部开展的直升机电磁（HEM）与磁法地球物理勘探的飞行测线数据发布内容。