Science Topics term usage 2007-12-13

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.)

59	earthquakes
44	geographic information systems (GIS)
44	volcanoes
32	unconsolidated deposits
23	earth structure
18	ground-water quality
18	climate change
17	earthquake occurrences
15	acid deposition
14	global warming
13	contamination and pollution
13	floods
12	real-time monitoring and reporting
12	ground water
12	invasive species
11	animals
11	ground-water flow
11	water supply and demand
10	endangered species
10	droughts
10	water resources
10	producers (organisms)
10	snow and ice cover
10	health and disease
10	tsunamis
10	erosion
9	earthquake probabilities
9	mathematical modeling
9	mineral resources
9	geologic history
9	ocean characteristics
9	water quality
8	radiometric dating
8	impact cratering
8	tectonic processes
8	landslides
8	human impacts
8	surface water (non-marine)
7	topography
7	river systems

Science Topics term usage Thursday, 2007-12-13