USGS - science for a changing world

Science Topics

Science Topics term usage Sunday, 2006-08-06

This analysis excludes the activity of search-engine spiders, USGS users, and transactions resulting in errors.

Scripts used

600science
28kwic
24combine

Browse terms chosen

(Table shows only the 40 most frequently chosen terms.)

36mineral resources
28volcanoes
27earthquakes
22geographic information systems (GIS)
12volcanic features
8tectonic processes
8earth structure
8isotopic analysis
8tsunamis
8geologic history
8droughts
8endangered species
8topography
7river systems
7climate change
7continental margins
6ground-water flow
6ecosystems
6animals
6water chemistry
6maps and atlases
6hazards
6ecology
5ocean characteristics
5geospatial datasets
5hydrogeology
5cartography
5aerial photography
5rocks and deposits
5ground water
4land surface characteristics
4human impacts
4field sampling
4sediment transport
4seismology
4erosion
4earthquake occurrences
4energy resources
4geologic structure
4acid deposition

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:34:52 EDT