Science Topics term usage 2009-11-20

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.)

1118	earthquakes
410	earthquake occurrences
297	volcanoes
210	maps and atlases
172	real-time monitoring and reporting
155	ground water
139	energy resources
125	map interfaces
122	mineral resources
118	surface water (non-marine)
118	floods
105	water quality
104	climate change
101	contamination and pollution
95	remote sensing
88	geospatial analysis
80	droughts
77	invasive species
64	topographic maps
57	environmental health (human)
54	seismology
51	fires
50	avian influenza
42	oil resources
38	acid deposition
37	erosion
35	hydrology
33	animals
31	ground-water flow
30	tectonic processes
27	aerial photography
27	human impacts
26	earthquake probabilities
24	river systems
23	biogeography
23	surface water quality
22	drainage basins
22	geologic maps
21	field methods
21	marine biology

Science Topics term usage Friday, 2009-11-20