Science Topics term usage 2007-10-19

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.)

68	volcanoes
65	earthquakes
62	geographic information systems (GIS)
38	reservoirs
25	earth structure
25	earthquake occurrences
24	tectonic processes
21	water quality
18	acid deposition
18	climate change
17	energy resources
17	rocks and deposits
16	geologic history
16	endangered species
16	real-time monitoring and reporting
14	desert ecosystems
14	streamflow
13	droughts
13	mineral resources
13	contamination and pollution
13	animals
13	landslides
13	water use
13	water supply and demand
13	geochemistry
12	human impacts
12	tsunamis
12	geologic structure
12	meteorites
11	hurricanes
11	impact cratering
11	health and disease
11	ocean characteristics
11	ground water
11	aquatic ecosystems
11	ecosystems
10	water properties
10	floods
10	invasive species
10	snow and ice cover

Science Topics term usage Friday, 2007-10-19