Frequency domain electromagnetic induction (FDEM) geophysical data collected near the Agashashok River in the Noatak National Preserve, AK

Frequency domain electromagnetic induction (FDEM) data were collected in September 2016 near the Agashashok River and its tributaries, within the Noatak National Preserve near Kotzebue, AK to aid in local permafrost mapping. Data were collected with a GEM-2 instrument (1.6 m coil separation, Geophex, Ltd.); a broadband sensor that measures the bulk conductivity and magnetic susceptibility of the subsurface to approximately 5-10 meters depth. The instrument is hand carried by a single operator and data are collected at walking speeds.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:604a81aad34eb120311b287b
metadata_type geospatial
modified 20211222
old-spatial -162.251000, 67.473490, -162.224700, 67.478630
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 75a68ad7c8c78fb1e3a60aec24d64661c20e0035
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-162.251000, 67.473490], [-162.251000, 67.478630], [ -162.224700, 67.478630], [ -162.224700, 67.473490], [-162.251000, 67.473490]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • alaska
  • amerigeo
  • amerigeoss
  • boundaries
  • ckan
  • electromagnetic-surveying
  • environment
  • geo
  • geophysics
  • geoscientificinformation
  • geoss
  • groundwater
  • kotzebue
  • national
  • noatak
  • north-america
  • permafrost
  • surface-water
  • united-states
  • usgs-604a81aad34eb120311b287b
isopen False
license_id notspecified
license_title License not specified
maintainer Neil Terry
maintainer_email nterry@usgs.gov
metadata_created 2025-11-21T22:06:54.341353
metadata_modified 2025-11-21T22:06:54.341357
notes Frequency domain electromagnetic induction (FDEM) data were collected in September 2016 near the Agashashok River and its tributaries, within the Noatak National Preserve near Kotzebue, AK to aid in local permafrost mapping. Data were collected with a GEM-2 instrument (1.6 m coil separation, Geophex, Ltd.); a broadband sensor that measures the bulk conductivity and magnetic susceptibility of the subsurface to approximately 5-10 meters depth. The instrument is hand carried by a single operator and data are collected at walking speeds.
num_resources 2
num_tags 20
title Frequency domain electromagnetic induction (FDEM) geophysical data collected near the Agashashok River in the Noatak National Preserve, AK