Science Topics term usage 2009-08-23

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.)

408	earthquakes
192	earthquake occurrences
159	volcanoes
146	maps and atlases
105	real-time monitoring and reporting
89	topographic maps
71	contamination and pollution
65	mineral resources
62	climate change
54	droughts
50	map interfaces
49	remote sensing
48	energy resources
45	animals
45	acid deposition
44	ground water
43	surface water (non-marine)
43	aerial photography
42	geologic maps
41	river systems
38	ocean characteristics
35	human impacts
34	ecosystems
33	aquatic ecosystems
32	fires
32	floods
32	water quality
32	life sciences
32	geospatial analysis
31	coal resources
30	environmental health (human)
27	glaciation
26	erosion
26	ocean-atmosphere interaction
26	avian influenza
26	bathymetry
25	impact cratering
24	invasive species
24	ground-water flow
24	abandoned mines and quarries

Science Topics term usage Sunday, 2009-08-23