Science Topics term usage 2009-03-25

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.)

1175	earthquakes
523	earthquake occurrences
386	volcanoes
168	maps and atlases
137	floods
117	real-time monitoring and reporting
72	climate change
67	ground water
67	energy resources
66	water quality
66	surface water (non-marine)
63	mineral resources
58	topographic maps
58	droughts
55	earthquake probabilities
50	contamination and pollution
47	geospatial analysis
43	USGS map servers
42	avian influenza
41	invasive species
40	remote sensing
28	seismology
28	geologic maps
25	river systems
24	environmental health (human)
23	volcanic activity
20	oil resources
19	acid deposition
19	global warming
19	human impacts
19	stream discharge
18	fires
16	hydrology
16	animals
16	ground-water quality
15	health and disease
14	aerial photography
14	metallic ores
14	California
13	land use and land cover

Science Topics term usage Wednesday, 2009-03-25