Science Topics term usage 2009-07-28

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.)

350	earthquakes
148	earthquake occurrences
117	maps and atlases
95	volcanoes
63	climate change
59	real-time monitoring and reporting
49	map interfaces
48	mineral resources
45	surface water (non-marine)
45	topographic maps
44	energy resources
44	ground water
42	water quality
39	remote sensing
39	contamination and pollution
30	floods
29	droughts
27	invasive species
27	geospatial analysis
21	geologic maps
20	fires
19	avian influenza
19	environmental health (human)
15	river systems
13	seismology
12	stream discharge
12	global warming
12	acid deposition
12	surface water quality
11	earthquake probabilities
10	soil resources
10	global change
10	hydrology
9	geographic information systems (GIS)
8	human impacts
8	tectonic processes
8	animals
8	surface-water level
8	ground-water quality
8	ground-water flow

Science Topics term usage Tuesday, 2009-07-28