USGS - science for a changing world

Science Topics

Science Topics term usage 2006-07

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

Scripts used

36716science
3245kwic
2566combine

Browse terms chosen

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

1981geographic information systems (GIS)
1838earthquakes
1286volcanoes
511topography
418climate change
417tsunamis
414streamflow
408earthquake occurrences
395tectonic processes
384earth structure
381maps and atlases
381ground water
360rocks and deposits
357mineral resources
356energy resources
333aerial photography
322water quality
311surface water (non-marine)
297geologic history
293stream-gage measurement
279floods
276contamination and pollution
272ground-water flow
261animals
252real-time monitoring and reporting
249acid deposition
245geologic structure
239human impacts
236land use and land cover
232water resources
230cartography
220geomorphology
209oil resources
207gravitational field (earth)
204landslides
187precipitation (atmospheric)
184water properties
183erosion
181water supply and demand
181land surface characteristics

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