Science Topics term usage 2011-02-21

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.)

1665	earthquakes
562	earthquake occurrences
292	volcanoes
91	maps and atlases
69	real-time monitoring and reporting
64	mineral resources
56	groundwater
55	climate change
43	floods
37	energy resources
36	earthquake probabilities
31	seismology
30	surface water (non-marine)
30	map interfaces
30	geospatial analysis
29	avian influenza
27	remote sensing
26	droughts
26	geologic maps
24	topographic maps
24	invasive species
23	water quality
23	contamination and pollution
20	oil resources
19	volcanic activity
16	fires
15	environmental health (human)
14	stream-gage measurement
13	natural gas resources
10	metallic ores
10	stream discharge
9	earth structure
9	tectonic processes
9	soil resources
9	microbiology
9	ocean characteristics
9	topics
8	streamflow
8	hazards
7	erosion

Science Topics term usage Monday, 2011-02-21