Science Topics term usage 2009-03-29

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.)

522	earthquakes
332	volcanoes
210	earthquake occurrences
94	maps and atlases
76	real-time monitoring and reporting
59	floods
56	USGS map servers
49	climate change
46	ground water
39	water quality
38	energy resources
36	topographic maps
34	mineral resources
34	surface water (non-marine)
29	geospatial analysis
28	earthquake probabilities
28	droughts
26	remote sensing
25	invasive species
23	avian influenza
23	contamination and pollution
17	geologic maps
16	river systems
16	environmental health (human)
15	nutrient content (water)
11	human impacts
11	acid deposition
11	fires
10	seismology
10	hydrogeology
10	oil resources
9	volcanic activity
9	rocks and deposits
8	geologic history
8	bathymetry
8	ecosystems
7	plants (organisms)
7	USGS budget
6	streamflow
6	ground-water flow

Science Topics term usage Sunday, 2009-03-29