Science Topics term usage 2009-09-23

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.)

699	earthquakes
371	maps and atlases
325	volcanoes
286	earthquake occurrences
226	real-time monitoring and reporting
138	floods
134	topographic maps
132	water quality
119	mineral resources
110	surface water (non-marine)
109	climate change
107	energy resources
79	map interfaces
73	ground water
69	invasive species
65	geospatial analysis
65	contamination and pollution
59	geologic maps
59	river systems
58	remote sensing
57	surface water quality
56	droughts
54	avian influenza
51	water chemistry
49	life sciences
48	fires
45	health and disease
40	natural resources
36	social sciences
35	earth structure
34	stream discharge
33	global warming
33	aquatic biology
32	tectonic processes
32	biological and physical processes
32	plants (organisms)
32	eutrophication
31	ground-water flow
29	acid deposition
28	seismology

Science Topics term usage Wednesday, 2009-09-23