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Mathematical modeling
Creating mathematical expressions to represent a simplified view of real-world systems.
Subtopics:
Mathematical simulation (2 items)

Streamflow modeling (7 items)
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Results 1 - 34 of 34 listed by similarity [list alphabetically]
Surface-water quality and flow Modeling Interest Group (SMIG) [New Window]
The USGS Surface-water quality and flow Modeling Interest Group (SMIG) is interested in surface-water quality and flow modeling activities with links to articles, model archives, data archives, clearinghouse, mailing list, classes, and meetings.
Biological resource status and trends: Conceptual modeling [New Window]
Information concerning status and trends of biological resources, focusing on conceptual modeling
Biological resource status and trends: Modeling [New Window]
Information concerning status and trends of biological resources, focusing on modeling
Biological resource status and trends: Predictive modeling [New Window]
Information concerning status and trends of biological resources, focusing on predictive modeling
Coastal ocean modeling at the USGS Woods Hole Field Center [New Window]
Fly-by and circulation movies, effluent concentration, tidal flushing, sea level, and temperature in Massachusetts Bay and Boston Harbor
Ground-water flow and other computer simulations for Utah [New Window]
Identifies computer models in USGS publications developed to study ground water for many areas of Utah.
National Handbook of Recommended Methods for Water Data Acquisition -- Chapter 11 - Water Use [New Window]
Provides standards and guidance for measuring, estimating, collecting, and analyzing water-use data. Includes brief descriptions of water-use activities, commonly used water-use terminology, and approaches and methods used in estimating water use.
Report of the Community Sediment Transport Modeling Workshop [New Window]
Report on workshop to explore a community approach to improving deterministic models of sediment transport in coastal seas, estuaries, and rivers.
SPARROW Modeling of Surface-Water Quality [New Window]
A software model for regional interpretation of water-quality monitoring data, estimating origin and fate of contaminants in streams, with documentation, publications and data for the applications.
Watershed modeling [New Window]
Description of the development and use of models to study watersheds supporting a broad range of applications and user skills. Includes links to related memos, training, software, projects, and references
Watershed processes and modeling [New Window]
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.
Boston Harbor Studies: the fate of sediments and contaminants in Massachusetts Bay [New Window]
Boston Harbor/Massachusetts Bay Studies research project conducted as part of Boston Harbor cleanup to predict the fate of contaminants and sediments introduced to Massachusetts' coastal waters from sources that include Boston sewage outfall.
Cascadia subduction zone: two contrasting models of lithospheric structure [New Window]
Summary of an investigation of the Cascadia subduction zone with detailed density-modeling experiments of the crust and mantle along two transects across Vancouver Island and the Canadian margin and the other on the margin of central Oregon.
Community model for coastal sediment transport [New Window]
Description of the National Community Sediment-Transport Model (NCSTM), an open source numerical model for sediment transport in coastal regions.
PDF Discontinuous nature of kriging digital terrain models [New Window]
Research exploring the mathematical properties of kriging, a widely-used surface interpolation method. The continuity properties of kriging digital terrain models over a wide range of terrain types helps hydrologists assess the usefulness of kriging for D
Earthquake hazards software for download [New Window]
Numerous downloadable software packages for carrying out analyses, modeling, and ancillary calculations in earthquake research and monitoring.
End-of-month hydrologic condition reports for New York State [New Window]
Site to locate most recent or archive reports for end-of-the-month hydrologic conditions with descriptions, data, charts, and maps giving an overview of water conditions during the month for the state of New York.
Galloway Township, New Jersey research site, Toxic Substances Hydrology Program [New Window]
This site provides information on investigations of hydrocarbons in the unsaturated zone and shallow ground water at a gasoline-spill site in Galloway Township, N.J., with links to research projects, mathematical models, and photos.
Geomagnetic models [New Window]
Description of magnetic models with link to on-line calculation, freeware calculator (DOS and Windows), descriptions of model types, and references.
Ground water information pages [New Window]
Lead page to connect to ground water information on the Nation's ground water resources and ground water activities of the USGS. Includes links to ground-water data, news reports, publications, field techniques, models, programs, and issues.
Mineral deposit models [New Window]
Publications by the USGS on mineral deposit models converted to digital files that can be downloaded. Some are *.pdf files requiring Adobe Acrobat Reader to view and download text
National Water-Quality Assessment (NAWQA) Program [New Window]
Primary homepage for the National Water Quality Assessment (NAWQA) Program studying water quality in river, aquifer and coastal water basins throughout the nation. Links to reports, data, models, maps and national synthesis studies.
Pennsylvania fractured rock hydrology research [New Window]
Links to reports for Pennsylvania on borehole geophysical studies, aquifer tests and properties, modeling, and hydrologic effects of an earthquake with links to MOC3D solute transport software package, program mission, and bibliography.
Radio tracking manatees to assess the impact of hydrologic changes in southwest Florida [New Window]
Report on the Sirenia Project use of a radio tracking study to determine manatee movement patterns and habitat to develop ecological models to understand and predict the effects of hydrologic restoration on manatees in Southwest Florida.
Resource materials for a GIS spatial analysis course [New Window]
This report consists of materials prepared for a GIS spatial analysis course intended for instructors preparing spatial-modeling training and scientists with advanced GIS expertise. Downloads available in many formats (PDF, ArcView, Word, etc.)
Restoration Ecology for Southeast ecosystems [New Window]
Overview of research at the Restoration Ecology facility on sustainable restoration of South Florida's greater Everglades and coastal ecosystems. Includes links study of birds, snails, and alligators, ecological modeling, photos, and posters.
San Francisco Bay Region geology [New Window]
Gateway to the geology of the San Francisco Bay region with links to geologic maps, paleontology, marine geology, earthquakes, landslides, and geophysics. Includes maps, 3-D models, and photos.
Search for geographic data, National Geospatial Data Clearinghouse [New Window]
The Geospatial Data Clearinghouse is a collection of over 250 spatial data servers, with digital geographic data for use in Geographic Information Systems (GIS), image processing systems, and other modeling software. Searchable by metadata.
South Florida Information Access (SOFIA) data exchange [New Window]
Provides links to the data, models and maps on the biology, ecology, geology, mapping, hydrology, and chemistry of research studies in southern Florida.
South Florida Information Access (SOFIA) projects by topic [New Window]
Links to explore South Florida and the Everglades ecosystem projects arranged by topic and subtopic, including proposals, project summaries, scopes of work, work plans, publications, and contacts.
Surface-water reports [New Window]
Links to Office of Surface Water reports on streamgaging, streamflow data and information, current meters, sediment, modeling, journal articles, and techniques.
The Earth's crust [New Window]
Information on the Earth's crust with a contour map of the thickness plus links to a global crustal database, a global crustal model - CRUST 5.1, and regional crustal models.
Using geochemical and statistical tools to identify irrigated areas that might contain high selenium concentrations in surface water [New Window]
Program using pattern recognition analysis and classification models to determine areas of irrigated land with concentrations of selenium.
Water resources applications software: NCALC, Manning's n value calculation program [New Window]
Software for calculating Manning's roughness coefficient values in stream channels with installation instructions for Unix and DOS systems.


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