Science Topics term usage 2009-06

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

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

15246	earthquakes
7356	earthquake occurrences
3757	volcanoes
3186	maps and atlases
2381	real-time monitoring and reporting
1490	USGS map servers
1263	topographic maps
1197	mineral resources
1130	climate change
1116	energy resources
1056	ground water
1014	surface water (non-marine)
993	floods
983	water quality
881	remote sensing
795	geospatial analysis
744	contamination and pollution
684	droughts
618	invasive species
579	avian influenza
567	geologic maps
479	environmental health (human)
446	earthquake probabilities
394	seismology
386	fires
301	oil resources
245	river systems
213	human impacts
209	desert ecosystems
202	streamflow
201	geographic information systems (GIS)
201	earth structure
196	surface water quality
196	health and disease
185	acid deposition
184	hydrology
180	tectonic processes
171	volcanic activity
166	animals
159	ground-water quality

Scripts used