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Remote sensing
The process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance from the targeted area. Remote sensing is used in this thesaurus to refer to methods that are solely or primarily deployed through air or space. Included in this concept are studies of biological populations using remote imaging techniques. Related methods which are used most frequently on the ground (e.g. photography), whether underwater, from airplanes or satellites, are not included in the term remote sensing.
Subtopics:
Aeromagnetic surveying (10 items)
Aeroradiometric surveying (1 items)
Hyperspectral imaging (4 items)
IFSAR (4 items)
Infrared imaging (19 items)
LIDAR (17 items)
Microwave imaging (1 items)
Multispectral imaging (22 items)
Radar imaging (4 items)
Thermal imaging (2 items)
Visible light imaging (4 items)

Remote-sensing data (26 items)
Remote-sensing images (26 items)
Composite burn index (1 items)
Normalized burn ratio (1 items)
Satellite altimetry (2 items)
Satellite images (26 items)
Related topics:
Results 1 - 110 of 110 listed by similarity [list alphabetically]
Land Remote Sensing Program [More info]
Land Remote Sensing Program (LRS) provides a primary source of remotely sensed data and applications of land remote sensing, nationally and internationally.
Remote sensing phenology [More info]
PDF Advanced Remote Sensing Research [More info]
New and experimental methods of analyzing geospatial imagery, including detailed spectral analysis of land surface materials, historical image analysis, and long wave infrared image analysis.
PDF Applying remote sensing to invasive species science-A tamarisk example [More info]
Explains how remote sensing data are used to understand the current extent and likely future of an invasive plant, in this case a bush.
PDF Assessment of least tern and piping plover habitats on the Missouri River using remote sensing [More info]
Analysis and modeling of multispectral imagery helps to predict the suitability of sand bars for nesting of these migratory birds.
National Satellite Land Remote Sensing Data Archive [More info]
USGS Archive for preservation and access for satellite remote sensing data and imagery (Landsat and AVHRR). Links to locating and ordering imagery, international collaborators, advisory committee, and Earthshots (satellite photos.).
Post-fire burn assessment by remote sensing on Federal lands [More info]
Remote sensing and field sampling techniques to support national assessment of burned areas
Earthshots, satellite images of environmental change [More info]
Satellite images of geographic areas of interest, cities, deserts, glaciers, geologic features, disaster areas, water bodies, and wildlife linked with articles, maps, and other images such as AVHRR, photographs, and special project images.
A rapid method for creating qualitative images indicative of thick oil emulsion on the ocean's surface from imaging spectrometer data [More info]
Technical details explaining how remotely sensed visible and infrared data can help recognize the extent of oil spills.
Global sea-surface temperature and sea-ice concentration: data display software [More info]
Downloadable data with software showing composite average ocean characteristics (sea-surface temperature and sea-ice concentration). Includes documentation, source code, data, and executable programs for Linux and Microsoft Windows.
PDF Land use and land cover classification system for use with remote sensor data [More info]
Framework of a national land use and land cover classification system for use with remote sensor data.
World Data Center for Remotely Sensed Land Data, Sioux Falls [More info]
Description of the World Data Center for Remotely Sensed Land Data (WDC/RSLD), the world's largest collection of space and aircraft imagery. Includes aerial photography, DOQs, Landsat satellite imagery and photography and AVHRR imagery.
A Method for Qualitative Mapping of Thick Oil Spills Using Imaging Spectroscopy [More info]
A method to create qualitative images of thick oil in oil spills on water using near-infrared imaging spectroscopy data. It relies on the organic absorption features of chemical bonds in aliphatic hydrocarbons. The data cannot give oil volume estimates.
PDF Advancing migratory bird conservation and management by using radar: An interagency collaboration [More info]
Doppler radar imaging is used for tracking the migration and behavior of bird populations. With the U.S. Fish and Wildlife Service and other agencies, USGS uses this technology to assist decision makers balance natural and industrial concerns
An interpretation of the 1977 Airborne Electromagnetic (AEM) survey, Fort Huachuca vicinity, Cochise County, Arizona [More info]
Complex report on the interpretation of aeromagnetic data to study hydrogeology of the San Pedro basin, Cochise County, Arizona determining geologic structure, basin fill and depth to water. Online version of a CD-ROM publication.
Availability of USGS geospatial data and aerial photography products [More info]
Website to search and locate United States digital cartographic data (U.S. GeoData and Digital Raster Graphics) and aerial photography of the National Aerial Photography Program (NAPP). Files can be downloaded in HTML or PDF format.
Data from the Shuttle Radar Topography Mission [More info]
Topographic observations from the SRTM, both original and reprocessed to correct missing and spurious data points.
Hurricane and extreme storm impact studies: coastal and nearshore mapping with scanning airborne laser (LIDAR) [More info]
Airborne scanning laser surveys (LIDAR) are used to obtaining data to investigate the magnitude and causes of coastal changes that occur during severe storms. Links to examples of coastal mapping during specific hurricanes.
International Program at the Earth Resources Observation Systems (EROS) Data Center - environmental monitoring and information systems [More info]
Overview of the environmental monitoring component of the international program at the EROS Data Center using Geographic Information Systems (GIS) technology, with links to data, partners, publications, and workshops.
Lake Tahoe Data Clearinghouse [More info]
This website is a gateway to information and data on Lake Tahoe with links to Lake Tahoe Initiative, geography, history, lake facts, GIS Data, DEM, DOQ, DLG imagery, bathymetry, satellite imagery, land cover, census, soils, pictures, and general maps.
Landsat Data Continuity Mission [More info]
Main site for Landsat missions, which provide information about land surface features of the earth. Includes imagery, links to general and technical information, ordering of data, and partners.
PDF Landsat Data Continuity Mission [More info]
A partnership between NASA and USGS to assure continuous satellite imaging of the earth's surface that was begun 40 years ago.
PDF Landsat-A Global Land-Imaging Mission [More info]
Characteristics and history of this satellite-based earth imaging system, including plans and prospects for future instruments.
PDF Landsat: A Global Land Imaging Program [More info]
Overview of the history of this satellite imaging system, with details about the way in which it collects information about the earth's surface.
Landsat: A Global Land-Imaging Project [More info]
A visible, long-term record of natural and human-induced changes on the global landscape since 1972.
LandsatLook images [More info]
Describes the source, kinds, format, possible uses, and limitations of LandsatLook images generated from Landsat satellite data.
PDF Management and Research Applications of Long-range Surveillance Radar Data for Birds, Bats, and Flying Insects [More info]
Explains how radar can be used to measure the density, speed, direction, altitude, and location of flocks of animals in flight.
Map and database of Quaternary faults and folds in Colombia and its offshore regions [More info]
PDF file of map of Quaternary faults and folds in Columbia prepared as part of the World Map of Major Active Faults with locations, ages, and activity rates of major earthquake-related features accompanied by database of description and activity.
Mars Global Digital Dune Database; MC-1 [More info]
Distribution and morphological character of moderate to large size dune fields on Mars from 65 degrees North to the north pole.
PDF Moderate Resolution Imaging Spectroradiometer (MODIS) Overview [More info]
Includes 500 meter surface reflectance and vegetation indices, which can be used to study change in energy balance and vegetation over time.
Moderate-resolution sea surface temperature data and seasonal pattern analysis for the Arctic Ocean ecoregions [More info]
GIS data as grids, images, and shapefiles for monthly averages at 4km resolution from 1981 through 2009.
Moderate-resolution sea surface temperature data for the nearshore North Pacific [More info]
Downloadable monthly average SST data along the north Pacific coast in 4km grid cells for 29 years as shapefile, CSV, GIS grids, and Microsoft Access databases.
PDF Monitoring floods and fires during the summer of 2011--The value of the Landsat satellite 40-year archives [More info]
Examples showing the use of historical satellite imagery for assessing the extent and severity of landscape hazards such as fires and floods.
New England states aeromagnetic and gravity maps and data [More info]
Aeromagnetic surveys of New England, merged to form seamless grids across the state. Gravity anomaly data are provided as well. Data provided in a variety of formats.
Planetary Data Systems (PDS) Mars Global Surveyor Mars Orbiter Camera (MOC) image collection [More info]
Planetary Data Systems (PDS) Mars Global Surveyor Mars Orbiter Camera (MOC) image collection with available images in decompressed JPEG format, raw data available by FTP access, web graphical images, and link to NASA's Map-a-Planet.
Satellite imagery: Lake Pontchartrain Basin and Gulf of Mexico [More info]
Report on satellite imagery collected by the NOAA Advanced Very High Resolution Radiometer (AVHRR) on NOAA polar-orbiting weather satellites. Links are provided to imagery of north-central Gulf of Mexico and of the Lake Pontchartrain.
PDF Satellite map of Port-au-Prince, Haiti - 2010 - infrared [More info]
Post-earthquake map derived from 1:24,000-scale base maps incorporating high- and medium-resolution remotely sensed imagery following the 7.0 magnitude earthquake near the capital city of Port au Prince, Haiti, on January 12, 2010
PDF Satellite map of Port-au-Prince, Haiti - 2010 - natural color [More info]
Post-earthquake map derived from 1:24,000-scale base maps incorporating high- and medium-resolution remotely sensed imagery following the 7.0 magnitude earthquake near the capital city of Port au Prince, Haiti, on January 12, 2010
Satellite technologies detect uplift in the Yellowstone Caldera [More info]
Explanation of uplift in the land surface of the northern part of the Yellowstone caldera (12cm, about ~5 inches) that occurred between 1997 and 2003, including the scientific methods by which it was detected and analyzed.
PDF Science supporting Gulf of Mexico oil-spill response, mitigation, and restoration activities-Assessment, monitoring, mapping, and coordination [More info]
Explains and shows data and expertise we were able to provide to Federal agencies and decision makers to help them deal with this difficult situation.
Seamless geographic data distribution system [More info]
Online map system providing downloadable geospatial data, primarily NSDI framework themes (that is, general geographic data such as transportation, boundaries, hydrography, orthoimagery, land cover, and elevation).
PDF TerraLook: GIS-Ready Time-Series of Satellite Imagery for Monitoring Change [More info]
With NASA and JPL, USGS provides satellite images that anyone can use to see changes in the Earth's surface over time. This helps us study changes due to climate, human activities, or meteorological events.
PDF Use of Light Detection and Ranging (LiDAR) to Obtain High-Resolution Elevation Data for Sussex County, Delaware [More info]
Methods and techniques used to collect and process LiDAR elevation data, the generation of the digital elevation model (DEM) and the 2-foot contours, and the quality-assurance procedures and results.
Washington aeromagnetic maps and data [More info]
Colored geomagnetic and gravity maps and related data and graphical plots for the state of Washington.
PDF A dryland river transformed--the Little Colorado, 1936-2010 [More info]
We mapped substantial migration of the river channel between the City of Winslow and the Navajo Nation community of Leupp; in a human lifetime the river has moved more than a mile across its valley floor.
PDF A volcano rekindled; the renewed eruption of Mount St. Helens, 2004-2006 [More info]
PDF Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Overview [More info]
General characteristics and spatial resolution of imagery products available from this type of sensor.
Advanced Very High Resolution Radiometer (AVHRR) [More info]
Coverage, characteristics, and availability of AVHRR data from a broad-band scanner sensing in the visible, near-infrared, and thermal infrared portions of the electromagnetic spectrum.
Advanced Very High Resolution Radiometer (AVHRR) sensor characteristics [More info]
Description of datasets of AVHRR data available from the EROS Data Center in Sioux Falls, SD in three formats: High Resolution Picture Transmission (HRPT), Local Area Coverage (LAC), and Global Area Coverage (GAC).
Aircraft scanners [More info]
Technical information on the Aircraft Scanners data set at the USGS EROS Data Center containing digital imagery acquired from several multispectral scanners collected over conterminous United States, Alaska, and NASA aircraft.
Astrogeology Science Center [More info]
Geological studies of other planetary bodies, with links to labs/facilities, maps/products, missions/research, and tools.
Atlas of Antarctic research [More info]
Entry to the Atlas of Antarctic Research giving a common base map for displaying research results, data, and descriptions of projects. Layers can be viewed or downloaded as Digital Elevation Models (DEMs), digital aerial photos, and satellite images.
Carolina slate belt gold deposits in Virginia, North Carolina, South Carolina, and Georgia [More info]
Report of research on the Carolina slate belt and gold deposits in Virginia, North Carolina, South Carolina, and Georgia with geologic mapping, mineralogic, geochemical, and fluid evolution studies, radiogenic dating, and stable isotope studies.
PDF Catalogue of Polar Bear (Ursus maritimus) Maternal Den Locations in the Beaufort Sea and Neighboring Regions, Alaska, 1910-2010 [More info]
Approximate locations of 392 polar bear maternal dens found between 1910 and 2010, along with the method and year of discovery.
Central California /San Francisco Bay Earthquake Hazards Project [More info]
Information on earthquakes in central California and the San Francisco region with links to four types of field studies, deep seismic investigations, geotechnical investigations, shallow seismic imaging, and airborne geophysical surveys.
PDF Coastal Change During Hurricane Isabel 2003 [More info]
Summary of study to document the impact of Hurricane Isabel in the Outer Banks of North Carolina, near Cape Hatteras. Methods included pre- and post-storm photography, videography, and lidar.
PDF Coastal change during Hurricane Ivan 2004 [More info]
Summary of study to document the impact of Hurricane Ivan on the Gulf coast of Alabama near the Florida border.
Coastal storms and tsunamis [More info]
USGS responses to and studies of the hazards and impact of major hurricanes, tsunamis, and El Nino storms. Includes links to oblique aerial photography and LIDAR surveys recording coastal changes and other effects of storms and waves.
Deserts, geology and resources [More info]
Online edition of booklet describing desert geology and mineral resources.
Detection and measurement of land subsidence using Global Positioning System surveying and interferometric synthetic aperture radar, Coachella Valley, California, 1996-2005 [More info]
Detailed measurements of elevation help to understand the extent and severity of subsidence. Study asks if subsidence indicates the aquifer system is compacting temporarily or permanently, and are the changes human-induced or tectonic.
Digital Orthophoto Quadrangles (DOQs) [More info]
Description of what Digital Orthophoto Quadrangles are and how to obtain them plus information on the DOQ program, points of contact, DOQ status graphic, examples of DOQs, and free data viewer software.
PDF Drought Monitoring with VegDRI [More info]
The Vegetation Drought Response Index is a drought monitoring and mapping tool integrating satellite observations of vegetation and climate with land cover, soil characteristics, and other environmental factors.
Earth Resources Observation & Science (EROS) [More info]
Access to products archived at the EROS Data Center, Sioux Falls, SD, including aerial photography, remote sensing data, satellite imagery, maps, and elevation data with product search retrieval and ordering information.
Earth Resources Observation and Science (EROS) Center Popular Web Sites [More info]
List of links leading to remote-sensing, satellite imaging, and general mapping produced by this USGS science center.
PDF Earth as art three [More info]
Images from the Landsat 5 and Landsat 7 satellites chosen for their aesthetic appeal, with color manipulated to enhance color variation or details.
EarthExplorer [More info]
Query and order satellite images, aerial photographs, and cartographic products through the U.S. Geological Survey. Log in as a guest or as a registered user with more privileges. Uses Java Script or Applet Versions for PC, MacIntosh, and Unix programs.
Edwards Aquifer online resources [More info]
Recharge and discharge summaries and other data, aeromagnetic survey map, and publications on Edwards Aquifer, Texas.
Environmental studies of the World Trade Center area after the September 11, 2001 attack [More info]
Report describing the results of an interdisciplinary environmental study of the World Trade Center (WTC) area after the attack on September 11, 2001. The investigations included imaging spectroscopy mapping and laboratory analysis.
PDF Flood inundation map library, Fort Kent, Maine [More info]
Severe flooding occurred in northern Maine from April 28 to May 1, 2008, and damage was extensive in the town. Aroostook County was declared a Federal disaster area. Our flood inundation maps were out of date, so we have updated them; this explains how.
Front Range Infrastructure Resources Project (FRIRP) [More info]
Home page for the Front Range Infrastructure Resources Project, a demonstration study of the northern Colorado Front Range urban corridor and the entire Rocky Mountain Front Range urban corridor with links to projects, datasets, and publications.
Geographic science of Alaska [More info]
Descriptions, results, and data on research projects using geographic analysis and monitoring and remote sensing to study ecosystems and land processes in the Arctic region.
Geologic framework and process of the Lake Pontchartrain Basin [More info]
Field methods, topics of investigation, shoreline changes, publications, and satellite imagery related to geologic and hydrologic processes affecting Lake Pontchartrain and adjacent lakes which form a large estuary in the Gulf Coast region.
Geophysical products [More info]
Links to products of magnetic, gravity, magnetotelluric, and multi-discipline reports and surveys of regions in the U.S. and Antarctica plus geophysical software tools. Some products are in PDF format.
Global Fiducials Library [More info]
Remote-sensing imagery, typically aerial or satellite photography, of specific areas chosen as reference sites for study of land surface change.
Global Geographic Information Systems (GIS) [More info]
Access to downloadable GIS databases including the Global Digital Elevation Model (DEM), remotely sensed products, data on world energy and mineral deposits, biodiversity, and geologic hazards for use with ArcView or free software.
PDF Hazards Management in Grand County, Colorado-Fire Fuels Characterization [More info]
Using land cover, vegetation, vegetation health, and other characteristics derived from remote-sensing imagery, we develop geospatial models depicting the susceptibility of this area to wildfires.
Hurricane and extreme storm impact studies [More info]
Homepage for programs of the Center for Coastal Geology on hurricanes and extreme storms with links to technology, related aerial photography, hurricanes, El Nino, northeasters, and specific storms.
PDF Integrated monitoring of ecological conditions in wetland-upland landscapes [More info]
Landscapes of interwoven wetlands and uplands offer a rich set of ecosystem goods and services. Changes in climate and land use can affect the value of those services. We study these areas to understand how they may be changing.
Integrated software for imagers and spectrometers (ISIS) [More info]
Integrated Software for Imagery and Spectrometers (ISIS) is a comprehensive, user-friendly, portable tool for processing, analyzing, and displaying remotely sensed image data. Homepage provides documentation, acquisition, user feedback, and FAQs.
PDF Introduction to potential fields: Magnetics [More info]
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.
PDF Inventory and protection of salt marshes from risks of sea-level rise at Acadia National Park, Maine [More info]
Will salt marshes survive if sea level rises quickly? The answer depends on whether the areas surrounding them can allow salt marsh fauna and flora to migrate there. Local topography, both natural and manmade, is the main factor limiting this migration.
PDF Joint Agency Commercial Imagery Evaluation (JACIE) [More info]
Interagency coordination group to understand quality and usefulness of remote sensing data
Land Processes Distributed Active Archive Center (DAAC) [More info]
Homepage of the Land Processes DAAC, which processes, archives, and distributes land-related data collected by Earth Observing System (EOS) sensors. Links to data products including ETM+ Landsat data, ASTER data, and MODIS land products.
PDF Lidar postcards [More info]
Four postcards available for downloading and printing, illustrating the use of lidar (light detection and ranging) to construct high-resolution topographic and habitat maps.
Measuring human-induced land subsidence from space [More info]
Examples of the use of Satellite Interferometric Synthetic Aperture Radar to measure and map changes on the Earth's surface as an aid to understanding how ground-water pumping, hydrocarbon production, or other human activities cause land subsidence.
Measuring land subsidence from space [More info]
Describes the use of satellite-borne Interferometric Synthetic Aperture Radar (InSAR) to precisely measure, monitor, and assess small changes in land surface elevation resulting from human-induced or naturally occuring land subsidence.
PDF Monitoring and analysis of sand dune movement and growth on the Navajo Nation, southwestern United States [More info]
We combine long-term records from aerial photographs, detailed mapping using survey-grade GPS, and ground-based lidar with meteorological monitoring. Sand dune migration rates are currently about 35 meters per year.
PDF Mount St. Helens lidar [More info]
Poster available in two sizes for downloading and printing.
Multibeam mapping of the West Florida Shelf, Gulf of Mexico [More info]
Georeferenced high-resolution mapping of bathymetry of the West Florida Shelf, Gulf of Mexico of areas suspected to be critical benthic habitats for fisheries. Includes links to images, data, metadata, and TIFF image files.
National Assessment of Coastal Change Hazards [More info]
The National Assessment of Coastal Change Hazards is a multi-year undertaking to identify and quantify the vulnerability of U.S. shorelines to coastal change hazards such as the effects of severe storms, sea-level rise, and shoreline erosion and retreat.
National Assessment of Shoreline Change Project [More info]
The Coastal and Marine Geology Program of the U.S. Geological Survey (USGS) is conducting an analysis of historical shoreline changes along open-ocean sandy shores of the conterminous United States and parts of Alaska and Hawaii.
National Mapping Program standards [More info]
Links to standards prepared under the National Mapping Program to produce and maintain top quality mapping and geospatial data products. Documents may be viewed and downloaded in PDF and HTML formats with links to related information.
National land cover characterization [More info]
Homepage for the National Land Cover Data (NLCD), a land cover classification scheme, for the United States based on data derived from Landsat Thematic Mapper satellite data. Includes links to description, products, accuracy, and program partners.
PDF Opening the Landsat Archive [More info]
All Landsat images within the EROS Center archive--a 37-year record of Earth's surface--are available free of charge via the web, including newly acquired Landsat 7 multispectral images.
Our dynamic desert landscape [More info]
Overview of studies of fragile and active landscape of the American Southwest deserts, including projects on geologic mapping, surface processes, remote sensing research, ecological processes, and earthquake hazard applications.
Overview of the greenness of the conterminous U.S. [More info]
Site to learn about, view, and order digital image vegetation condition (greenness) maps of the conterminous U.S. based on the Normalized Difference Vegetation Index (NDVI) with imagery from Advanced High Resolution Radiometer (AVHRR).
Platte River Program, a USGS Place-Based Studies Program [More info]
Site for the Platte River Program in Nebraska an area that is a critical staging area for migratory waterbirds of the Central Flyway. Includes links to color-infrared aerial photos, 1938 historic aerial photos, and Cottonwood Ranch research site.
South Florida Information Access (SOFIA) projects by region [More info]
Listing of South Florida Information Access (SOFIA) projects by region
Space Acquired Photography [More info]
Ordering and descriptive information for National Aeronautics and Space Administration (NASA) imagery acquired by the USGS from Gemini, Apollo, Skylab, International Space Station, Space Shuttle, and Shuttle Large Format Camera missions.
Spectroscopy Lab [More info]
Links to Spectroscopy Lab projects to identify and map materials through spectroscopic remote sensing (imaging spectroscopy, hyperspectral imaging, imaging spectrometry, ultraspectral imaging, etc) on the Earth and in space.
Spectroscopy of rocks and minerals, and principles of spectroscopy [More info]
Technical review of the principles of spectroscopy and its use in identifying minerals and other materials.
Teacher's guide to the San Francisco Bay area geophysics maps (U.S. Geological Survey GP-1006 and GP-1007) [More info]
This publication (Open-File Report 95-479) is a teacher's guide to two U.S. Geological Survey maps that show gravity and magnetic data in contour form superimposed on a LANDSAT satellite image of the San Francisco Bay area.
PDF U.S. Geological Survey disaster response and the International Charter for space and major disasters [More info]
How we support an international agreement designed to facilitate the use of remote sensing data for assisting when major disasters occur anywhere on earth.
PDF USGS Alaska State Mosaic [More info]
Using 172 Scenes from the Multi-Resolution Land Characteristics 2001 collection geometrically and radiometrically aligned, we produced seamless, relatively cloud-free image of the entire state.
PDF USGS St. Petersburg Coastal and Marine Science Center [More info]
Extreme storms, sea-level rise, and the health of marine communities are some of the major societal and environmental issues studied by this part of USGS.
PDF USGS St. Petersburg Coastal and Marine Science Center--Research activities in the U.S. Virgin Islands [More info]
Explains type of information we collect and the problems we study in this area, focusing on coral reef ecosystems, ocean acidification, and sea-level change.
USGS responds to Deepwater Horizon oil spill [More info]
Imagery, sampling information, and other data intended for use in assessing and remediating environmental problems related to the oil spill in the Gulf of Mexico in 2010
PDF Using terrestrial light detection and ranging (lidar) technology for land-surface analysis in the Southwest [More info]
Tripod-mounted lidar makes it inexpensive and efficient to measure and map geographic features that change with time, such as sand dunes and erosional features, and soil microtopography.
Water resources maps and geographic information systems (GIS) information [More info]
Portal for links to United State water resources maps and geographic information systems (GIS) data for the United States for viewing or downloading.
Western Region geophysical investigations by the Geophysical Unit of Menlo Park, Calif. (GUMP) [More info]
Overview of the research group Geophysical Unit of Menlo Park (GUMP) with links to studies, models, and maps on gravity and geomagnetism in Nevada, California, Oregon, Washington and the U.S.
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