Line, grid, and vector data, plot files, and descriptive project report for the airborne geophysical survey of part of the western Fortymile mining district, east-central Alaska

This digital publication, GPR 2008-1, contains geophysical data and a digital elevation model that were produced from airborne geophysical surveys conducted in 2007 for part of the western Fortymile mining district, east-central Alaska. Aeromagnetic and electromagnetic data were acquired for 250 sq miles during the helicopter-based survey. Data provided in GPR 2008-1 include processed (1) linedata ASCII database, (2) gridded files of magnetic data, a calculated vertical magnetic gradient (first vertical derivative), apparent resistivity data, and a digital elevation model, (3) vector files of data contours and flight lines, and (4) the Contractor's descriptive project report. Data are described in more detail in the "GPR2008-1Readme.pdf" and "linedata/GPR2008-1-Linedata.txt" files included on the DVD.

Data and Resources

Field Value
access_constraints ["Use Constraints: Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way the user is obligated to describe the types of modifications the user has made. User specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS).", "Access Constraints: This report, map and/or dataset are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below)."]
bbox-east-long -142.61
bbox-north-lat 64.36
bbox-south-lat 63.95
bbox-west-long -143.39
contact-email dggspubs@alaska.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2008-01-01"}]
frequency-of-update notPlanned
guid 8288ce00-79d1-45e2-a18d-0a9da8f09ec6_source
licence ["The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requester or anyone else exceed the fee paid for the electronic service or product."]
lineage This lineage was generated by the FGDC CSDGM to 19139 transformation
metadata-date 2008-05-06
metadata-language eng; USA
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-143.39, 63.95], [-142.61, 63.95], [-142.61, 64.36], [-143.39, 64.36], [-143.39, 63.95]]]}
progress completed
resource-type dataset
responsible-party [{"name": "State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS)", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-143.39, 63.95], [-142.61, 63.95], [-142.61, 64.36], [-143.39, 64.36], [-143.39, 63.95]]]}
spatial_harvester true
temporal-extent-begin 2007-09-01
temporal-extent-end 2007-12-01
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • aeromagnetic data
  • aeromagnetic map
  • airborne geophysical survey
  • alaska
  • apparent resistivity contours
  • apparent resistivity data
  • apparent resistivity map
  • dighem v em system
  • digital elevation model
  • eagle quadrangle
  • electromagnetic data
  • first vertical derivative
  • fortymile mining district
  • geophysics
  • hem survey
  • magnetic contours
  • state of
  • tanacross quadrangle
isopen False
metadata_created 2025-09-23T15:56:17.532773
metadata_modified 2025-09-23T15:56:17.532784
notes This digital publication, GPR 2008-1, contains geophysical data and a digital elevation model that were produced from airborne geophysical surveys conducted in 2007 for part of the western Fortymile mining district, east-central Alaska. Aeromagnetic and electromagnetic data were acquired for 250 sq miles during the helicopter-based survey. Data provided in GPR 2008-1 include processed (1) linedata ASCII database, (2) gridded files of magnetic data, a calculated vertical magnetic gradient (first vertical derivative), apparent resistivity data, and a digital elevation model, (3) vector files of data contours and flight lines, and (4) the Contractor's descriptive project report. Data are described in more detail in the "GPR2008-1Readme.pdf" and "linedata/GPR2008-1-Linedata.txt" files included on the DVD.
num_resources 2
num_tags 26
title Line, grid, and vector data, plot files, and descriptive project report for the airborne geophysical survey of part of the western Fortymile mining district, east-central Alaska