l677eg.m77t - MGD77 data file for Geophysical data from field activity L-6-77-EG in Eastern Gulf of Alaska from 06/13/1977 to 06/30/1977

Single-beam bathymetry, gravity, and magnetic data along with DGPS navigation data was collected as part of field activity L-6-77-EG in Eastern Gulf of Alaska from 06/13/1977 to 06/30/1977, http://walrus.wr.usgs.gov/infobank/l/l677eg/html/l-6-77-eg.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/l677eg/html/l-6-77-eg.bath.html, http://walrus.wr.usgs.gov/infobank/l/l677eg/html/l-6-77-eg.grav.html, and http://walrus.wr.usgs.gov/infobank/l/l677eg/html/l-6-77-eg.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 20220721165636
identifier USGS:1123f78c-00de-4145-8819-adbe0e85ed64
metadata_type geospatial
modified 20201019
old-spatial {"type": "Polygon", "coordinates": [[[-151.81000, 54.62029], [-151.81000, 60.11625], [ -131.62680, 60.11625], [ -131.62680, 54.62029], [-151.81000, 54.62029]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash bcb6f71b3e45ae01fb5d323b85fbfe63516126bb
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-151.81000, 54.62029], [-151.81000, 60.11625], [ -131.62680, 60.11625], [ -131.62680, 54.62029], [-151.81000, 54.62029]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • ak
  • alaska
  • amerigeo
  • amerigeoss
  • bathymetry
  • bathymetry-and-elevation
  • bathymetry-measurement
  • ckan
  • distributions
  • eastern-gulf-of-alaska
  • 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-1123f78c-00de-4145-8819-adbe0e85ed64
  • water-depth
isopen False
license_id notspecified
license_title License not specified
maintainer Gregory K. Miller
maintainer_email gmiller@usgs.gov
metadata_created 2025-11-21T02:10:18.634672
metadata_modified 2025-11-21T02:10:18.634676
notes Single-beam bathymetry, gravity, and magnetic data along with DGPS navigation data was collected as part of field activity L-6-77-EG in Eastern Gulf of Alaska from 06/13/1977 to 06/30/1977, http://walrus.wr.usgs.gov/infobank/l/l677eg/html/l-6-77-eg.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/l677eg/html/l-6-77-eg.bath.html, http://walrus.wr.usgs.gov/infobank/l/l677eg/html/l-6-77-eg.grav.html, and http://walrus.wr.usgs.gov/infobank/l/l677eg/html/l-6-77-eg.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 l677eg.m77t - MGD77 data file for Geophysical data from field activity L-6-77-EG in Eastern Gulf of Alaska from 06/13/1977 to 06/30/1977