f790nc.m77t and f790nc.h77t: MGD77T data and header files for single-beam bathymetry data for field activity F-7-90-NC in the Gulf of Farallones, Northern California from 07/19/1990 to 08/03/1990

Single-beam bathymetry data along with Loran-C RHO-RHO and GPS navigation data was collected as part of the U.S. Geological Survey cruise F-7-90-NC. The cruise was...美国地质调查局（U.S. Geological Survey）F-7-90-NC航次采集了单波束测深数据、罗兰-C（Loran-C）RHO-RHO数据与GPS导航数据，该航次……