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Geomorphology
Branch of geology dealing with surface land features and the processes that create and change them.
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Results 1 - 28 of 28 listed by similarity [list alphabetically]
Geomorphology and sediment transport -- river mechanics [New Window]
Current river mechanics research on particle friction angles of fluvial gravels (data files compressed in BenHex, Winzip and Unix) and Grand Canyon Beach evolution (animation requiring Java 1.0) plus digital elevation files (*.hgx and *.zip files).
Fluvial geomorphology studies in Kansas [New Window]
Report of completed studies that have investigated the response of river and stream channels in Kansas to a variety of human-caused and natural disturbances.
Assessment of potential coastal impacts: Hurricane Rita [New Window]
Areas susceptible to inundation during landfall of Hurricane Rita are assessed by comparing lidar-derived dune elevations to simulated storm surge values. Results shown on pictorial maps.
Biological soil crusts [New Window]
Explains biological soil crusts, organism-produced soil formations commonly found in semiarid and arid environments, with special reference to their biological composition, physical characteristics, and ecological significance.
PDF Biological soil crusts: webs of life in the desert [New Window]
Fact sheet on the need to protect biological soil crusts in the desert. These crusts are most of the soil surface in deserts not covered by green plants and are inhabited by cyanobacterium (blue-green algae) and other organisms useful to the ecosystem.
Central California Digital Elevation Model (DEM) and bathymetry images [New Window]
Digital Elevation Model (DEM) images and bathymetry data of the San Francisco Bay, Santa Clara, and the Monterey Bay and Canyon areas.
Costly landslide events in the United States: map layer description file [New Window]
GIS data set from the USGS National Landslides Hazards Program showing major landslide events in the United States and Puerto Rico with metadata. Map layer can be downloaded in shapefile format or SDTS format.
Cryptobiotic soils: holding the place in place [New Window]
Describes biological soil crusts, with special reference to their role in resisting soil erosion, improving soil fertility, and increasing water infiltration in the deserts of the Colorado Plateau region.
Detection and measurement of land subsidence using Global Positioning System surveying and interferometric synthetic aperture radar, Coachella Valley, California, 1996-2005 [New Window]
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.
Eastern Earth Surface Processes Team [New Window]
The Eastern Earth Surface Processes Team provides geologic mapping regional geologic studies to determine stratigraphy and geologic structure, topical studies to understand geologic and surficial processes, and syntheses of earth science data.
Erosion in the Rio Puerco: geography and processes [New Window]
Paper on the accelerated erosion of the Rio Puerco, a tributary of the Rio Grande in New Mexico, which has deepened and widened its channel, or arroyo, since the settlement of the region.
Extent of Pleistocene lakes in the western Great Basin [New Window]
Map of Pleistocene pluvial lakes in the western Great Basin (Nevada, eastern California, southern Oregon). Includes metadata, online PDF map view, and downloadable ArcInfo export files, ArcView shapefiles, and TIFF files.
Geologic hazards: landslide images [New Window]
Photographs of examples of landslides viewable online as 100-200kb or 800 x 600kb images.
Land subsidence from ground-water pumping [New Window]
Online report for an interactive workshop Impact of Climate Change and Land Use in the Southwestern United States. Discusses land subsidence due to increased ground water pumping in the Southwest and the damage caused by subsidence.
Landslide types and processes [New Window]
An introductory primer giving basic scientific facts about landslides--the types of landslides, how they are initiated, and how they can begin to be managed as a hazard.
Mass Wasting Following the 2002 Missionary Ridge Fire near Durango, Colorado, a Field Trip Guidebook [New Window]
Guidebook with photos, maps, and diagrams explaining how forest fires have affected the likelihood of mass wasting, with discussions of steps taken to minimize future impacts.
Mass wasting presentation [New Window]
Presentation explaining the various types of mass wasting, how they work, and how they differ from one another, with diagrams and photos.
Measuring human-induced land subsidence from space [New Window]
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 [New Window]
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.
National assessment of coastal vulnerability to sea-level rise: preliminary results for the U.S. Pacific Coast [New Window]
Report on the potential of coastal change due to future sea level rise using the coastal vulnerability index (C.V.I.) with two regional examples in San Francisco and Monterey Bay and Tillamook Head, Oregon, to Ocean Shores, WA.
National assessment of coastal vulnerability to sea-level rise: preliminary results of the U.S. Atlantic coast [New Window]
Brief report on map showing the relative vulnerability of the Atlantic coast to changes due to future rise in sea level. Includes links to similar maps in Open-file report 2000-178 on the Pacific Coast and 2000-179 on the Gulf of Mexico Coast.
Our dynamic desert landscape [New Window]
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.
Sea-floor morphology between Año Nuevo and Santa Cruz, California [New Window]
Report with preliminary sea floor map displaying submarine rock exposures found along the northern part of Monterey Bay National Marine Sanctuary, extent based on side-scan sonar records, seismic-reflection records, and underwater video.
Sinkholes [New Window]
Explains sinkhole formation and distribution, with special emphasis on their occurrence in Missouri
The Great Ice Age [New Window]
Booklet (PDF format) on the Pleistocene glaciations known as the Great Ice Age and the resulting geomorphological, climatic, and environmental changes that occurred on Earth during the period.
USGS news and information on El Nino [New Window]
Information sources on El Nino effects such as landslides, coastal hazards, floods. Includes links to maps and images.
Water science for schools: land subsidence [New Window]
Site for elementary school studies on land subsidence with links to land subsidence in California, wells, ground water quality, sinkholes, glossary, and a random link.
West-central Florida erosion study [New Window]
West central Florida erosion interactive map with GIS datasets to download including geologic interpretative layers, samples, bathymetry, and imagery.


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