Science Topics term usage 2008-05-18

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.)

1305	earthquakes
533	earthquake occurrences
200	volcanoes
107	maps and atlases
96	real-time monitoring and reporting
72	earthquake probabilities
61	climate change
52	USGS map servers
49	energy resources
45	floods
44	ground water
44	surface water (non-marine)
41	droughts
38	mineral resources
36	contamination and pollution
33	geospatial analysis
33	avian influenza
33	water quality
32	remote sensing
30	invasive species
24	seismology
22	environmental health (human)
21	fires
19	tectonic processes
12	acid deposition
12	oil resources
12	streamflow
12	ground-water flow
12	erosion
11	volcanic activity
11	hydrology
11	aquatic ecosystems
10	snow and ice cover
10	earth structure
10	river systems
10	rocks and deposits
10	global warming
10	topics
9	human impacts
9	sediment transport

Science Topics term usage Sunday, 2008-05-18