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Computational methods
Mathematical techniques used to analyze numerical data.
Subtopics:
Image analysis (6 items)
Mathematical modeling (97 items)
Spatial analysis (31 items)
Statistical analysis (21 items)
Topological analysis (1 items)
Visualization methods (5 items)

Results 1 - 10 of 155 listed by similarity [list alphabetically]
Development of computational fluid dynamics--habitat suitability (CFD-HSI) models to identify potential passage--Challenge zones for migratory fishes in the Penobscot River
Proposed removal of dams will change the characteristics of stream flow and will affect fish that swim upstream to spawn. A mathematical model of the river flow tells us where the likely problems will be located and how the flow will change.
Methods for estimating magnitude and frequency of floods in rural basins in the southeastern United States: South Carolina
Flood estimates are needed for the efficient design of bridges, highway embankments, levees, to protect lives and property in flood-prone areas, and to determine flood-insurance rates.
National Handbook of Recommended Methods for Water Data Acquisition -- Chapter 11 - Water Use
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.
A Magnitude 7.1 Earthquake in the Tacoma Fault Zone-A Plausible Scenario for the Southern Puget Sound Region, Washington
Scientific description of the likely effects of a significant earthquake on this densely populated area.
A Method for Qualitative Mapping of Thick Oil Spills Using Imaging Spectroscopy
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.
A New Method for Mapping Population Distribution
With the addition of elevation and land use and land cover data, we can show population density on a map much more effectively than if we simply color census areas. The resulting maps should allow better planning, especially in highly developed areas.
A new tool to assess groundwater resources in the Mississippi embayment
Mathematical model of the groundwater system in this area includes 13 types of data and spans multiple aquifers over more than a century. This enables us to assess the quantity of groundwater, where and how it is being used, and how pumping affects it.
A program for the conversion of The National Map data from proprietary format to resource description framework (RDF)
To expand data functionality and capabilities for users of The National Map of the U.S. Geological Survey, data sets for six watersheds and three urban areas were converted from the Best Practices vector data model formats to Semantic Web data formats.
A spatial analysis of cultural ecosystem service valuation by regional stakeholders in Florida: a coastal application of the social values for ecosystem services (SolVES) tool
Research project to close gaps in our knowledge about the attitudes and perceptions, or nonmonetary values, held by coastal residents for ecosystem services, particularly for cultural services.
A westward extension of the tropical Pacific warm pool leads to March through June drying in Kenya and Ethiopia
Analysis of sea-surface temperature in the Indian Ocean shows that warming correlates with east African rainfall; the effect on atmospheric convection and precipitation over the Indian Ocean is greater than that associated with El NiĆ±o (ENSO).
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U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.usgs.gov/science//science/science.php?term=189&type=theme