Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

Airborne magnetic and radiometric survey, Charleston, South Carolina and surrounds, 2019

Metadata Updated: July 6, 2024

This data release provides digital flight line data for a high-resolution airborne magnetic and radiometric survey over Charleston, South Carolina and the surrounding region. These data were collected to better understand earthquake hazards in the Charleston seismic zone by imaging structural features in the crystalline basement and to image heavy mineral sands containing titanium, zirconium, and rare earth elements using radiometric data (gamma spectrometry), which is sensitive to thorium in monazite. This survey represents a collaborative effort by the U.S. Geological Survey (USGS) Earthquake Hazards Program, Mineral Resources Program, National Cooperative Mapping Program, and Earth Mapping Resource Initiative (Earth MRI) effort. Data for this survey were collected by Terraquest, Ltd. under contract with the USGS using a fixed wing aircraft with magnetometers mounted in the tail stinger and each wing tip pod and a fully calibrated gamma ray spectrometer from May to July of 2019. The survey covers a 134-kilometer x 90-kilometer rectangular area parallel to the Atlantic Ocean shoreline along the long axis. Data were collected along northwest-southeast flight lines spaced 400 meters (m) apart with northeast-southwest tie lines flown every 4000 m. A mean terrain clearance of 127 m was maintained. Most of the survey data were collected at lower flying heights, except near and over the City of Charleston higher clearance was maintained due to safety considerations. A total of 32,447-line kilometers (km) of data were collected. Files that are available in this publication include flight line data for the magnetic survey in an ascii .csv file, flight line data for the radiometric survey in an ascii .csv file, geoTIFF images of the total magnetic intensity and radiometric total count, potassium, thorium, and uranium values, and a report describing the survey parameters, field operations, quality control and data reduction procedures. A zip file containing the contractor's deliverable products is also included. Binary files in this package are readable using the free software "Geosoft Viewer" or commercial software "Oasis Montaj."

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources

Dates

Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/730fdd158111b79e6e3dd777afe4d68f
Identifier USGS:5f247e3082cef313ed972534
Data Last Modified 20200930
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 708b103b-7242-43c3-98a6-8818234e24e1
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -80.95496,32.36613,-79.23897,33.72713
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 7cc72116c09453276723212180c7f37c924fa03e9684871063be6d27d4ca3fbb
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -80.95496, 32.36613, -80.95496, 33.72713, -79.23897, 33.72713, -79.23897, 32.36613, -80.95496, 32.36613}

Didn't find what you're looking for? Suggest a dataset here.