Science Topics term usage 2009-11-22

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.)

945	earthquakes
379	earthquake occurrences
269	volcanoes
181	maps and atlases
115	energy resources
108	mineral resources
105	floods
95	real-time monitoring and reporting
86	surface water (non-marine)
85	climate change
76	water quality
72	contamination and pollution
67	map interfaces
61	ground water
54	remote sensing
54	invasive species
49	topographic maps
49	droughts
45	geospatial analysis
45	fires
44	nutrient content (water)
42	avian influenza
39	geologic maps
36	ground-water quality
34	geology
34	earthquake probabilities
33	human impacts
33	acid deposition
31	environmental health (human)
30	seismology
28	volcanic activity
27	metallic ores
25	earth structure
23	oil resources
21	surface water quality
21	sea-floor characteristics
20	global change
20	geography
20	land use and land cover
20	landslides

Science Topics term usage Sunday, 2009-11-22