Magnetometer measurement

Use of specialized instruments designed to measure the earth's magnetic field at a given location.
This category is also used for magnetic surveying and magnetometry.
Subtopics:
(none)


Results listed by similarity [list alphabetically]
Aeromagnetic Data of Alturas, California, and Surrounding Areas

Aeromagnetic survey data giving the calculated magnetic anomaly. Data are provided in CSV format.

Info
Aeromagnetic survey in Afghanistan

Digital files and descriptions of airborne and ground collected magnetic data in Afghanistan

Info
Aeromagnetic surveys in Yukon Flats Alaska

Flight-line data from the aeromagnetic survey

Info
Airborne electromagnetic and magnetic survey data in Big Cypress National Preserve and Everglades National Park, 2001

Airborne electromagnetic (AEM) and magnetic survey data, a total of 3065 line-kilometers, collected during October 2001 with line spacing 400m and nominal altitude of 30m. Includes raw and processed AEM data and magnetic data, in CSV format.

Info
Airborne electromagnetic and magnetic survey data, East Poplar Oil Field and surrounding area, October 2014, Fort Peck Indian Reservation, Montana

Airborne electromagnetic and magnetic survey data were collected in 2014 in this area. The survey was flown at a nominal flight height of 30 m above terrain, line spacing of 200 m with a smaller area at 100 m. Includes raw and processed AEM data and spatially-constrained inverted resistivity depth sections, and unprocessed and processed magnetic data that has been drift corrected, leveled, and draped to terrain. Data are provided in CSV format.

Info
Airborne magnetic and radiometric survey, Ironton, Missouri area

Digital flight line data for a high resolution horizontal magnetic gradient and radiometric survey over this area. Flight line spacing was 300 m, mean terrain clearance was 140 m. Includes flight line data for the magnetic gradient survey, flight line data for the radiometric survey and a report describing the survey parameters, field operations, quality control and data reduction procedures. Data are provided in CSV format, flight lines are provided in shapefile format.

Info
Airborne magnetic survey, Iron Mountain-Chatham region, central Upper Peninsula, Michigan, 2018

Digital flight line data for a high-resolution magnetic survey with line spacing 150 meters and nominal terrain clearance 80 meters over most of the study area. Data are provided as Geosoft databases and grids. Data over two small areas (less than 1 sq km combined) were redacted because those areas include multiple tracts of Native American lands.

Info
Airborne Magnetic Total-Field Survey, Iron Mountain-Menominee Region, Michigan-Wisconsin, USA

Airborne magnetic survey data collected from this area to better understand the lithology and structure of exposed and concealed Precambrian rocks in support of mineral resource investigations. Results are provided in Geosoft database, grid exchange format, GeoTiff, and CSV.

Info
Airborne Magnetic Total-Field Survey, Manchester Region, Iowa, USA

Airborne magnetic survey data collected from this area to understand Precambrian rocks concealed under Paleozoic sedimentary rocks in northeast Iowa. Data are provided in GXF grid and CSV formats. Flight lines are provided in shapefile format.

Info
Concepts and procedures required for successful reduction of tensor magnetic gradiometer data obtained from an unexploded ordnance detection demonstration at Yuma Proving Grounds, Arizona

Report discussing application of specialized instrumentation for detecting unexploded ordnance.

Info
Digital aeromagnetic data from the Sandoval-Santa Fe, Belen, and Cochiti airborne survey, covering areas in Rio Arriba, Sandoval, Santa Fe, Socorro, and Valencia Counties, New Mexico

Grids and flight-line data for three airborne geophysical surveys

Info
Gravity and magnetic data along a seismic refraction-reflection line in northwest Nevada and northeast California

Report with gravity station data in a spreadsheet

Info
Gravity and magnetic data in the vicinity of Virgin Valley, southern Nevada

Field measurements: 548 gravity and 6484 magnetic anomaly locations, data in fixed-format text files.

Info
Gravity and magnetic surveys over the Santa Rita fault system, southeastern Arizona

Gravity station data and hand-held magnetometer measurements with analysis and description of methodology

Info
Gravity, magnetic, and physical property data in the Smoke Creek Desert area, Northwest Nevada

Aerial, truck-towed, and hand-held magnetometer measurements, gravity station data, and sample density and magnetic susceptibility measures

Info
Ground magnetic data from within the Long Valley Caldera, California

Results of a detailed ground magnetic survey

Info
Ground-magnetic studies of the Amargosa desert region, California and Nevada

Hand-held magnetometer and sample magnetic susceptibility measurements used to help interpret complex patterns in the magnetic anomaly of this area.

Info
Helicopter magnetic and gravity gradiometry survey over the Pea Ridge iron mine and surrounding area, southeast Missouri, 2014

High resolution magnetic and gravity gradient data were collected in this area centered on the Pea Ridge iron oxide-apatite rare-earth element deposit. Flight lines spacing was 400 m, nominal flight height above terrain was 80 m. Includes flight line data for the gravity gradiometry survey and a report describing the survey parameters, field operations, quality control and data reduction procedures. Data are provided in CSV format.

Info
High-resolution aeromagnetic survey to image shallow faults, Poncha Springs and vicinity, Chaffee county, Colorado

Survey to map concealed faults that may be related to geothermal resources, such as hot springs; data given are surface locations of faults interpreted from the survey.

Info
Introduction to potential fields: magnetics

Explanation of the Earth's magnetic field and how USGS measures it. Defines magnetic anomaly, induced and remanent magnetism in rocks, and describes magnetic anomaly maps.

Info
Magnetic and gravity studies of Mono Lake, east-central, California

Magnetic and gravity investigations were undertaken in Mono Lake to study regional crustal structures and to aid in understanding the geologic framework, in particular regarding potential geothermal resources and volcanic hazards throughout Mono Basin.

Info
Magnetic map of the Irish Hills and surrounding areas, San Luis Obispo County, central California

Database includes new helicopter aeromagnetic data, point locations of the local maximum horizontal gradient derived from the aeromagnetic data, and physical property data.

Info
Magnetic properties of Quaternary deposits, Kenai Peninsula, Alaska -- Implications for aeromagnetic anomalies of Upper Cook Inlet

Magnetic susceptibility measurements with statistical analysis

Info
Magnetic susceptibility data for some exposed bedrock in the western conterminous United States

In-place rock magnetic susceptibility measurements for 746 sites are reported in a database. These data, collected from 1991 through 2012, are intended to help improve geophysical modeling of the Earth’s crust in the Western United States.

Info
Mount Baker and Mount Adams Airborne Magnetic and Electromagnetic Survey Data, August 2002, Washington, USA

Flight line data for an airborne magnetic survey with nominal sensor height of 60m above terrain, flight-line data for a gravity gradiometry survey, with a report containing instrument and procedure details. Data are provided in CSV format.

Info
Preliminary gravity and magnetic data of the Lake Pillsbury northern Coast Ranges, California

Report with excel tables showing principal facts (gravity observation data) and ground magnetic data.

Info
Airborne geophysical surveys conducted in western Nebraska, 2010: contractor reports and data

Three contractor reports and data files for an airborne electromagnetic survey describing data aquisition and processing. Processed geophysical data were inverted to produce resistivity depth sections along flight lines. Results are described herein.

Info
Crustal Architecture Beneath the Southern Midcontinent (USA) -- Data Grids and 3D Geophysical Models

Regional grid files and 3D voxel models were used to study crustal architecture. Includes grid files consist of surface grids used in the inversions, and calculated geophysical data grids produced by the inversions. Data are provided in GOCAD voxel and GXF grid formats.

Info
Digitized data from ground geophysical surveys in Afghanistan

Surveys originally carried out by Soviet geophysicists from 1972 through 1974 were digitized. Georeferencing was problematic as were some of the measured characteristics; we explain what we did and how we have understood these data.

Info
Geophysical data from the Spring and Snake Valleys area, Nevada and Utah

Existing and new gravity station data and magnetometer measurements used to infer geologic structure of this area

Info
Geophysical interpretations of the southern Española Basin, New Mexico, that contribute to understanding its hydrogeologic framework

Geophysical interpretation of the southern Española basin for the purpose of understanding the hydrogeologic framework including shallow faults, igneous units, and basement rocks

Info
Magnetotelluric sounding data, stations 26 to 36, north of Wells, Nevada, 2005

Magnetotelluric (MT) sounding data collected in 2005 along an east-west profile in this area, to know whether major mining districts in the Northern Nevada Gold Province are underlain by rocks of the Archean Wyoming craton, which are known to contain orogenic gold deposits, or by accreted rocks of the Paleoproterozoic Mojave province.

Info
Magnetotelluric survey to characterize the Sunnyside Porphyry Copper System in the Patagonia Mountains, Arizona

Magnetotelluric sounding data collected in 2008 in this area to help USGS understand concealed mineral resources.

Info