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Earth characteristics
The measurable, definable properties and features of the earth.
Subtopics:
Atmospheric properties (21 items)
Earth material properties (8 items)
Earth structure (13 items)
Geologic history (42 items)
Geologic structure (36 items)
Gravitational field (earth) (12 items)
Land surface characteristics (52 items)
Magnetic field (earth) (18 items)
Ocean characteristics (66 items)
Rocks and deposits (157 items)
Snow and ice cover (19 items)
Stratigraphic sections (26 items)
Topography (59 items)
Related topics:


Results 412 - 453 of 453 listed alphabetically [list by similarity]
U.S. Pacific West Coast internet map server [More info]
Interactive map of the U.S. Pacific West Coast with data layers of Gloria sidescan data, multibeam backscatter and shaded relief imagery.
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 EDMAP Program-Training the Next Generation of Geologic Mappers [More info]
How to apply for funding for students to complete geologic mapping projects, with a list of universities who have participated in the program.
USGS East-coast sediment analysis: analysis, procedures, database and georeferenced displays [More info]
Grain-size analysis of marine sediments of the U.S. eastern coast with sampling and lab methods, surficial sediment database in three formats (Excel, Dbase IV, ASCII), and use of geographic mapping tools for visualizing sediment data layers.
USGS Geography Products [More info]
USGS mapping sciences page containing links describing cartographic and geographic products and programs. The information products are available in printed and digital formats.
USGS National Map of Surficial Mineralogy [More info]
Maps of exposed surface mineral groups derived from automated spectral analysis of satellite and airborne imaging systems; these data suggest areas that may contain mineral deposits of various types.
USGS geology in the parks [More info]
U.S. Geological Survey and National Park Service virtual geology sites organized by geology topics and individual parks.
USGS guide to federal environmental laws and regulations [More info]
Guide to major U.S. environmental statutes and corresponding regulations on air quality, fish and wildlife conservation, cultural and historic resources, solid and hazardous substances, public lands, farmlands, and water resources.
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 USGS science for the Nation's changing coasts; Shoreline change assessment [More info]
Shorelines are always changing, yet we use these areas heavily. This shows what we measure and how, to help adapt to changing coastal zones.
USGS studies in the New York Bight [More info]
Describes and provides links to USGS research in the location of the estuary and coast of Long Island, New York, to map the sea floor and to study sediment transport, contaminants, and sand resources and coastal vulnerability.
Unconsolidated aquifers of upstate New York [More info]
Information on aquifers in upstate New York which consist of unconsolidated deposits of sand and gravel that occupy major river and stream valleys or lake plains. Links to aquifer maps at scales 1:24,000 or 1:250,000 and cooperative publications.
Understanding our planet through chemistry [More info]
Site with a series of articles showing how chemists and geologists use analytical chemistry to determine the age of the Earth, determine Earth's history, predict volcanic eruptions, observe long-term atmospheric change and study pollution.
PDF Undiscovered Gas Resources in the Alum Shale, Denmark, 2013 [More info]
We estimated a mean undiscovered volume of 6.9 trillion cubic feet of natural gas in this geologic unit using a geology-based assessment methodology.
United States Antarctic Resource Center [More info]
Description of the Antarctic Resources Center and links to its workshops and archives of Antarctic maps, charts, satellite images, and photographs produced by the member nations of the Scientific Committee on Antarctic Research (SCAR).
Unsaturated-Zone Flow Project [More info]
Overview of research to measure, predict, and understand the flow of water through soil and rock between the land surface and the water table with links to field sites, laboratory methods, theoretical developments, publications, and personnel.
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.
PDF Use of Semipermeable Membrane Devices (SPMDs) in Petroleum Polluted Waters [More info]
Provides a brief discussion of issues surrounding the use and capabilities of SPMDs, which can be used in monitoring petroleum spills.
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.
View USGS maps and aerial photo images online [More info]
Links to selected partner sites where USGS maps and aerial photo images may be viewed with a web browser.
Visual Glossary - asthenosphere [More info]
The asthenosphere is the ductile part of the earth just below the lithosphere, including the lower mantle. The asthenosphere is about 180 km thick.
Volcanoes [More info]
This booklet presents a generalized summary of the nature, workings, publications, and hazards of the common types of volcanoes around the world, along with a brief introduction to the techniques of volcano monitoring and research.
Volunteer Map Data Collection at the USGS [More info]
Describes past, current, planned, and experimental USGS programs and processes to permit citizen volunteers to collect geographic and cartographic data and information for incorporation into the USGS topographic map revision process.
Washington aeromagnetic maps and data [More info]
Colored geomagnetic and gravity maps and related data and graphical plots for the state of Washington.
PDF Water Resources and Natural Gas Production from the Marcellus Shale [More info]
The Marcellus shale is a black shale unit in the eastern US. It has economic use as a source of natural gas. Environmental concerns arising from the process of exploiting this resource include water supply and wastewater disposal.
Water resources of Alaska [More info]
USGS water resources home page for Alaska with links to detailed hydrologic studies and real-time and historic data on streamflow, ground and surface water, glaciers, and water quality plus research activities, publications, and contacts.
Water resources of Colorado [More info]
USGS water resources home page for Colorado with links to detailed hydrologic studies and real-time and long-term data on streamflow, snowpack, sediment, ground and surface water, and water quality, plus publications, news, and drought watch.
Water resources of Maine [More info]
USGS water home page for Maine with detailed hydrologic studies and real-time and long-term data for streamflow, ground and surface water, snow, and water quality plus drought watch, press releases, projects, and contacts.
Water resources of Washington State - projects/studies [More info]
List of links to USGS research and studies on the water resources of Washington, which can be searched by subject, basin and county.
Water science for schools: glaciers and icecaps, storehouses of fresh water [More info]
Brief information for students on glaciers and icecaps from Water Science for Schools with link to more glacial information by the National Snow and Ice Data Center (NSIDC).
Watershed processes and modeling [More info]
Links to published materials produced by the Watershed Processes and Modeling Project on watershed model TOPMODEL, compilation of STATSGO soils data, climate change, landscape heterogeneity in ecoregions, and other links.
West-central Florida erosion study [More info]
West central Florida erosion interactive map with GIS datasets to download including geologic interpretative layers, samples, bathymetry, and imagery.
Western Region Coastal and Marine Geology [More info]
Western Region Coastal and Marine Geology science center conducts research in the coastal and offshore areas of California, Oregon, Washington, Alaska, Hawaii, and other U.S. Pacific Islands.
Western Region Geology and Geophysics Center [More info]
Overview of the research of this organizational unit with links to projects and activities and to geologic information on the western U.S.
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.
Western lake catchment systems - Bear Lake region, Idaho-Utah [More info]
Homepage for project on Bear Lake, Idaho-Utah, to study past climate change and effect on lake catchment basins. Includes link to summary, personnel, geology, methods used including coring and seismic surveying, and publications.
Whales and walrus: tillers of the seafloor [More info]
Report on sea floor marks in the Northeast Bering Sea and Chukchi Sea that were identified as pits and furrows caused by whales and walruses in the process of feeding on bottom crustaceans.
What is an Ocean Bottom Seismometer? [More info]
Description and uses of the Ocean Bottom Seismometer; a self contained data-acquisition system which free falls to the ocean floor and records seismic data generated by airguns and earthquakes.
What on Earth is plate tectonics? [More info]
Discussion and diagrams on plate tectonics and the structure of the Earth for beginners with link to a detailed version: This Dynamic Earth for more information.
Woods Hole Coastal and Marine Geology Field Center [More info]
Site with links to projects of the field center of the Woods Hole Coastal Marine Geology Program on underwater areas between shorelines and the deep ocean, off the U.S. East Coast, the Gulf of Mexico, and in parts of the Caribbean and Great Lakes.
Yosemite Valley geologic story [More info]
Site describes the present understanding of the various geologic processes that contributed to the valley's creation. Links to Yosemite Valley's geologic maps.
usSEABED (marine sediment and rock distribution) [More info]
Data on sediment and rock distributions in the waters off the United States, shown using an internet map service with links to downloadable data files
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