Frequency Domain Electromagnetic (FDEM) Surveys Collected in Fredericktown, Missouri, June 2018

In June 2018, U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected geophysical measurements to help evaluate the suitability of a proposed landfill site for disposing mine-waste materials in Fredericktown, MO. Frequency domain electromagnetic (FDEM) induction data were collected above the land surface along the cleared paths through the proposed disposal cell locations. The data were collected with a hand-held, multi-frequency antenna carried approximately 1 meter (m) above the land surface at walking speeds using a multi-frequency tool. All unprocessed and processed data including the in-phase and quadrature components in parts per million, electrical conductivity (EC) in milliSiemens per meter (mS/m), and magnetic susceptibility in parts per thousand are served in this data release. In addition, the data were inverted to generate depth dependent estimates of conductivity along the profiles. An analysis of the depth of investigation indicated the FDEM reliably estimated conductivity values to depths of about 3 m below land surface. These output data are also served in this data release.

Data and Resources

Field Value
accessLevel public
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identifier USGS:5cb777f1e4b0c3b0065d7d34
metadata_type geospatial
modified 20200818
old-spatial -90.311825, 37.574500, -90.305000, 37.585200
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 3ad0db69f9936e01abb6632610edf2b9852447a3
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spatial {"type": "Polygon", "coordinates": [[[-90.311825, 37.574500], [-90.311825, 37.585200], [ -90.305000, 37.585200], [ -90.305000, 37.574500], [-90.311825, 37.574500]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • ckan
  • electromagnetic-surveying
  • environment
  • geo
  • geophysics
  • geoscientificinformation
  • geoss
  • groundwater
  • national
  • north-america
  • resistivity
  • united-states
  • usgs-5cb777f1e4b0c3b0065d7d34
isopen False
license_id notspecified
license_title License not specified
maintainer Carole D. Johnson
maintainer_email gs-w_ogw_bg_info@usgs.gov
metadata_created 2025-11-23T00:30:25.271103
metadata_modified 2025-11-23T00:30:25.271107
notes In June 2018, U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency (EPA) collected geophysical measurements to help evaluate the suitability of a proposed landfill site for disposing mine-waste materials in Fredericktown, MO. Frequency domain electromagnetic (FDEM) induction data were collected above the land surface along the cleared paths through the proposed disposal cell locations. The data were collected with a hand-held, multi-frequency antenna carried approximately 1 meter (m) above the land surface at walking speeds using a multi-frequency tool. All unprocessed and processed data including the in-phase and quadrature components in parts per million, electrical conductivity (EC) in milliSiemens per meter (mS/m), and magnetic susceptibility in parts per thousand are served in this data release. In addition, the data were inverted to generate depth dependent estimates of conductivity along the profiles. An analysis of the depth of investigation indicated the FDEM reliably estimated conductivity values to depths of about 3 m below land surface. These output data are also served in this data release.
num_resources 2
num_tags 15
title Frequency Domain Electromagnetic (FDEM) Surveys Collected in Fredericktown, Missouri, June 2018