Creating mathematical expressions to represent a simplified view of real-world systems.
San Francisco Bay Region geology [ More info] 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.
Science from genes to landscapes [ More info] Explains USGS scientific research and monitoring activities focused on ecosystems, with examples from emerging diseases, invasive species, rangeland fire, and the complex interactions among organisms and human activities.
Science to support the understanding of south Texas surface-water and groundwater resources in a changing landscape [ More info] Short descriptions of the research and monitoring activities we are carrying out to assist state, local, and Federal agencies dealing with water resource issues in the southern part of the state.
Slope-Area Computation Program Graphical User Interface 1.0--A Preprocessing and Postprocessing Tool for Estimating Peak Flood Discharge Using the Slope-Area Method [ More info] Explains how to use this command-line software to estimate peak flood discharge using indirect measures such as high water marks on trees or buildings.
SolVES - Social values for ecosystem services [ More info] GIS application for assessing, mapping, and quantifying the social value of ecosystem services. Helps decision makers consider tradeoffs among them with the human attitudes and preferences that express underlying social values.
Source, Use, and Disposition of Freshwater in Puerto Rico, 2005 [ More info] Quantitative analysis of water use statistics for Puerto Rico, showing domestic, agricultural, industrial, and electric power as the main offstream uses.
South Florida Information Access (SOFIA) data exchange [ More info] 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 [ More info] 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.
Summary of the reconnaissance investigation of the diamond resource potential and production capacity of Côte d'Ivoire [ More info] Study integrating archival reports and maps, satellite imagery, and terrain modeling to estimate resource reserves of 11,200,000 carats in two regions of the country.
Surface-water quality and flow Modeling Interest Group (SMIG) [ More info] 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.
Alphabetical Index of Topics
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