Science Topics term usage 2009-12-31

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.)

1161	earthquakes
547	earthquake occurrences
257	volcanoes
125	maps and atlases
73	real-time monitoring and reporting
64	streamflow
57	climate change
49	topographic maps
49	map interfaces
43	geospatial analysis
43	mineral resources
38	earthquake probabilities
35	energy resources
35	geologic maps
33	remote sensing
33	volcanic activity
30	seismology
30	floods
29	contamination and pollution
28	ground water
28	surface water (non-marine)
25	California
23	droughts
21	invasive species
21	water quality
20	fires
19	avian influenza
17	ground-water flow
16	environmental health (human)
13	tectonic processes
11	biological population management
10	river systems
9	geochemistry
9	hazards
9	earth structure
9	mining hazards
8	water budget
8	hydrologic processes
8	acid deposition
8	bathymetry

Science Topics term usage Thursday, 2009-12-31