g175eg.m77t - MGD77 data file for Geophysical data from field activity G-1-75-EG in Eastern Gulf of Alaska, Continental Shelf from 06/22/1975 to 08/27/1975

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: July 16, 2025 | Last Modified: 20201019

Single-beam bathymetry, gravity, and magnetic data along with DGPS navigation data was collected as part of field activity G-1-75-EG in Eastern Gulf of Alaska, Continental Shelf from 06/22/1975 to 08/27/1975, http://walrus.wr.usgs.gov/infobank/g/g175eg/html/g-1-75-eg.meta.html The geophysical source was a Knudsen 12 kHz 320B/R echosounder. These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/g/g175eg/html/g-1-75-eg.bath.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.

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AK Alaska Bathymetry Eastern Gulf of Alaska Eastern Gulf of Alaska, Continental Shelf Magnetic Anomalies Marine Geology Marine Geophysics Marine Gravity Field Marine Magnetic Field Seafloor Topography USA USGS:fcb6e449-f918-4fe9-8fd2-0db8bd6f47d8 Water Depth bathymetry bathymetry and elevation bathymetry measurement distributions geoscientificinformation gravimeter measurement gravimetry magnetic field observations magnetometer measurement marine geophysics oceans single-beam echo sounder

Complete Metadata

@id	http://datainventory.doi.gov/id/dataset/e6ed46d91cca1174e79507d16fa68d40
bureauCode	[ "010:12" ]
identifier	USGS:fcb6e449-f918-4fe9-8fd2-0db8bd6f47d8
spatial	-162.72705,54.03096,-137.0603,60.18927
theme	[ "geospatial" ]

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