l3a81nc.m77t - MGD77 data file for Geophysical data from field activity L-3A-81-NC in Central Coast, Northern California from 04/16/1981 to 04/26/1981

Single-beam bathymetry, gravity, and magnetic data along with DGPS navigation data was collected as part of field activity L-3A-81-NC in Central Coast, Northern...野外作业L-3A-81-NC于中部海岸、北部……区域开展，本次采集了单波束测深（Single-beam bathymetry）数据、重力数据、磁测数据以及差分全球定位系统（Differential Global Positioning System, DGPS）导航数据。