Science Topics term usage 2006-09-19

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.)

141	earthquakes
96	volcanoes
88	surface water quality
58	geographic information systems (GIS)
33	mineral resources
32	earth structure
31	tectonic processes
31	contamination and pollution
30	tsunamis
27	aerial photography
26	water quality
25	endangered species
24	health and disease
24	rocks and deposits
24	streamflow
24	ocean characteristics
23	maps and atlases
22	animals
22	geologic structure
22	energy resources
22	human impacts
21	life sciences
19	invasive species
19	earthquake occurrences
17	climate change
17	mining hazards
17	water properties
17	surface water (non-marine)
16	oil resources
15	landslides
15	acid deposition
15	ground water
14	topography
14	ecology
14	erosion
14	geologic history
13	outer core (earth)
13	land surface characteristics
13	water supply and demand
13	cartography

Science Topics term usage Tuesday, 2006-09-19