Science Topics term usage 2008-04-09

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.)

468	earthquakes
199	earthquake occurrences
178	volcanoes
133	maps and atlases
93	real-time monitoring and reporting
79	energy resources
66	USGS map servers
64	floods
59	mineral resources
56	climate change
51	water quality
47	ground water
44	surface water (non-marine)
41	droughts
40	contamination and pollution
34	geospatial analysis
33	oil resources
30	avian influenza
30	invasive species
28	remote sensing
24	fires
24	environmental health (human)
22	human impacts
21	aerial photography
18	natural gas resources
17	cartography
15	earthquake probabilities
14	earth structure
12	tectonic processes
12	seismology
12	global warming
11	acid deposition
11	streamflow
11	plants (organisms)
10	endangered species
10	land use and land cover
10	aquatic ecosystems
10	ground-water quality
9	tsunamis
9	water use

Science Topics term usage Wednesday, 2008-04-09