l777wg.m77t - MGD77 data file for Geophysical data from field activity L-7-77-WG in Western Gulf of Alaska from 07/03/1977 to 07/22/1977

Single-beam bathymetry, gravity, and magnetic data along with DGPS navigation data was collected as part of field activity L-7-77-WG in Western Gulf of Alaska from...单波束测深（Single-beam bathymetry）、重力数据、磁测数据以及差分全球定位系统（DGPS）导航数据，作为阿拉斯加湾西部野外作业L-7-77-WG的组成部分，于……期间在该区域被采集获取。