Science Topics term usage 2008-02-22

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.)

103	earthquakes
78	geographic information systems (GIS)
45	earthquake occurrences
38	nonvascular plants
35	real-time monitoring and reporting
27	volcanoes
24	animals
24	succession (biological)
24	human impacts
19	acid deposition
17	contamination and pollution
15	endangered species
15	bats
15	earth structure
15	mineral resources
14	surface water (non-marine)
14	climate change
14	invasive species
14	snow and ice cover
13	geologic history
12	maps and atlases
12	floods
11	tsunamis
11	oil resources
11	ground water
11	hydrology
11	water quality
11	ground-water flow
10	aerial photography
10	precipitation (atmospheric)
10	magnetic field (earth)
10	desert ecosystems
10	tectonic processes
9	energy resources
9	streamflow
9	earthquake probabilities
9	health and disease
9	coal resources
9	topics
9	water resources

Science Topics term usage Friday, 2008-02-22