Science Topics term usage 2007-10-25

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	streamflow
56	earthquakes
52	health and disease
48	geographic information systems (GIS)
34	volcanoes
26	earthquake occurrences
21	acid deposition
19	climate change
17	fires
17	earth structure
17	geochemistry
17	drainage basins
16	stream-gage measurement
16	energy resources
16	tsunamis
15	ecosystems
14	ground water
14	animals
14	water quality
14	surface water (non-marine)
13	marine geology
13	tectonic processes
12	contamination and pollution
12	social sciences
12	human impacts
12	droughts
12	endangered species
12	plants (organisms)
11	ocean characteristics
11	freshwater ecosystems
11	stream discharge
10	desert ecosystems
10	global warming
10	remote sensing
10	crust (earth)
10	river systems
10	topics
9	volcanic activity
9	precipitation (atmospheric)
9	rocks and deposits

Science Topics term usage Thursday, 2007-10-25