USGS - science for a changing world

Science Topics

Science Topics term usage 2008-02

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

Scripts used

59166science
5570combine
5215kwic

Browse terms chosen

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

2190earthquakes
1775geographic information systems (GIS)
1035volcanoes
885earthquake occurrences
606real-time monitoring and reporting
511acid deposition
490earth structure
472climate change
439contamination and pollution
437floods
434human impacts
373river systems
366animals
358erosion
357ground-water flow
351rocks and deposits
348topography
342tectonic processes
341aquatic ecosystems
323mineral resources
308geologic history
305ground water
304endangered species
300energy resources
299global warming
290health and disease
281water quality
280tsunamis
278aerial photography
265land use and land cover
264desert ecosystems
260geologic structure
253maps and atlases
251precipitation (atmospheric)
246sediment transport
245ocean characteristics
236water supply and demand
236water resources
233global change
230water use

KWIC index letters chosen

bar graph showing usage of each letter

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Page Last Modified: Friday, 25-Apr-2008 17:35:01 EDT