l977ar.m77t - MGD77 data file for Geophysical data from field activity L-9-77-AR in Arctic from 08/25/1977 to 10/08/1977

Single-beam bathymetry, magnetics, and gravity data along with transit satellite navigation data was collected as part of field activity L-9-77-AR in Arctic from 08/25/1977 to 10/08/1977, http://walrus.wr.usgs.gov/infobank/l/l977ar/html/l-9-77-ar.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/l977ar/html/l-9-77-ar.bath.html http://walrus.wr.usgs.gov/infobank/l/l977ar/html/l-9-77-ar.grav.html http://walrus.wr.usgs.gov/infobank/l/l977ar/html/l-9-77-ar.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
identifier USGS:34e755e0-03b3-4bac-a169-c5d838fbd5d4
metadata_type geospatial
modified 20201019
old-spatial -168.62703, 64.48080, -140.86696, 72.76758
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 097f2eed8cae34a6a72ecff91574f33ae270e700
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-168.62703, 64.48080], [-168.62703, 72.76758], [ -140.86696, 72.76758], [ -140.86696, 64.48080], [-168.62703, 64.48080]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • ak
  • alaska
  • amerigeo
  • amerigeoss
  • arctic
  • arctic-ocean
  • bathymetry
  • bathymetry-and-elevation
  • bathymetry-measurement
  • ckan
  • distributions
  • geo
  • geoscientificinformation
  • geoss
  • gravimeter-measurement
  • gravimetry
  • magnetic-field-observations
  • magnetometer-measurement
  • marine-geology
  • marine-geophysics
  • marine-gravity
  • marine-magnetics
  • marine-seismic
  • national
  • north-america
  • oceans
  • seafloor-topography
  • single-beam-bathymetry
  • single-beam-echo-sounder
  • united-states
  • usgs-34e755e0-03b3-4bac-a169-c5d838fbd5d4
  • water-depth
isopen False
license_id notspecified
license_title License not specified
maintainer Gregory K. Miller
maintainer_email gmiller@usgs.gov
metadata_created 2025-11-21T19:50:54.609762
metadata_modified 2025-11-21T19:50:54.609766
notes Single-beam bathymetry, magnetics, and gravity data along with transit satellite navigation data was collected as part of field activity L-9-77-AR in Arctic from 08/25/1977 to 10/08/1977, http://walrus.wr.usgs.gov/infobank/l/l977ar/html/l-9-77-ar.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/l977ar/html/l-9-77-ar.bath.html http://walrus.wr.usgs.gov/infobank/l/l977ar/html/l-9-77-ar.grav.html http://walrus.wr.usgs.gov/infobank/l/l977ar/html/l-9-77-ar.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 32
title l977ar.m77t - MGD77 data file for Geophysical data from field activity L-9-77-AR in Arctic from 08/25/1977 to 10/08/1977