Science Topics term usage 2008-05-23

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.)

961	earthquakes
394	earthquake occurrences
162	volcanoes
152	maps and atlases
135	real-time monitoring and reporting
84	USGS map servers
77	energy resources
67	floods
66	ground water
66	surface water (non-marine)
64	mineral resources
63	water quality
62	climate change
53	droughts
51	geospatial analysis
50	earthquake probabilities
46	avian influenza
43	remote sensing
38	contamination and pollution
37	fires
37	oil resources
33	invasive species
30	environmental health (human)
19	river systems
15	ground-water flow
14	seismology
13	cartography
13	hydrology
12	tectonic processes
12	streamflow
12	volcanic activity
12	hazards
11	human impacts
11	surface water quality
10	rocks and deposits
10	global warming
10	ecosystem monitoring
9	earth structure
9	ground-water quality
9	aquatic ecosystems

Science Topics term usage Friday, 2008-05-23