Science Topics term usage 2007-02-16

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.)

107	geographic information systems (GIS)
103	earthquakes
89	volcanoes
42	isotopic analysis
38	earthquake occurrences
29	earth structure
24	contamination and pollution
22	tectonic processes
21	water quality
19	ground-water flow
19	geologic history
18	land use and land cover
18	maps and atlases
16	streamflow
16	acid deposition
15	animals
14	erosion
14	global warming
14	climate change
14	rocks and deposits
14	remote sensing
13	ground water
13	aerial photography
13	health and disease
13	geologic structure
12	ecosystems
12	mineral resources
11	tsunamis
11	floods
11	hydrogeology
11	endangered species
11	landslides
10	geochemistry
10	map coordinate systems
10	water supply and demand
9	human impacts
9	industrial pollution
9	wildlife
9	volcanic activity
9	desert ecosystems

Science Topics term usage Friday, 2007-02-16