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 07/03/1977 to 07/22/1977, http://walrus.wr.usgs.gov/infobank/l/l777wg/html/l-7-77-wg.meta.html 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/l/l777wg/html/l-7-77-wg.bath.html, http://walrus.wr.usgs.gov/infobank/l/l777wg/html/l-7-77-wg.grav.html, and http://walrus.wr.usgs.gov/infobank/l/l777wg/html/l-7-77-wg.mag.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.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220721172003
identifier USGS:2b6ae05d-749d-4db1-907d-c9cb9f87caf1
metadata_type geospatial
modified 20201019
old-spatial {"type": "Polygon", "coordinates": [[[-156.74424, 54.97198], [-156.74424, 58.14343], [ -147.44074, 58.14343], [ -147.44074, 54.97198], [-156.74424, 54.97198]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 37970e367da64f1a0bd6c97aebbcbbeaa9b573e3
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-156.74424, 54.97198], [-156.74424, 58.14343], [ -147.44074, 58.14343], [ -147.44074, 54.97198], [-156.74424, 54.97198]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • ak
  • alaska
  • amerigeo
  • amerigeoss
  • bathymetry
  • bathymetry-and-elevation
  • bathymetry-measurement
  • ckan
  • distributions
  • geo
  • geoscientificinformation
  • geoss
  • gravimeter-measurement
  • gravimetry
  • magnetic-anomalies
  • magnetic-field-observations
  • magnetometer-measurement
  • marine-geology
  • marine-geophysics
  • marine-gravity-field
  • marine-magnetic-field
  • national
  • north-america
  • oceans
  • seafloor-topography
  • single-beam-echo-sounder
  • united-states
  • usa
  • usgs-2b6ae05d-749d-4db1-907d-c9cb9f87caf1
  • water-depth
  • western-gulf-of-alaska
isopen False
license_id notspecified
license_title License not specified
maintainer Gregory K. Miller
maintainer_email gmiller@usgs.gov
metadata_created 2025-11-22T20:44:25.103571
metadata_modified 2025-11-22T20:44:25.103575
notes 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 07/03/1977 to 07/22/1977, http://walrus.wr.usgs.gov/infobank/l/l777wg/html/l-7-77-wg.meta.html 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/l/l777wg/html/l-7-77-wg.bath.html, http://walrus.wr.usgs.gov/infobank/l/l777wg/html/l-7-77-wg.grav.html, and http://walrus.wr.usgs.gov/infobank/l/l777wg/html/l-7-77-wg.mag.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.
num_resources 2
num_tags 31
title 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