Science Topics term usage 2008-02-20

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.)

84	earthquakes
65	water use
57	geographic information systems (GIS)
39	volcanoes
37	earthquake occurrences
22	aquatic ecosystems
20	earth structure
20	acid deposition
19	real-time monitoring and reporting
17	health and disease
17	ground-water flow
17	climate change
16	human impacts
14	river systems
13	earth characteristics
13	geologic history
13	floods
12	endangered species
12	animals
12	water quality
12	energy resources
12	tsunamis
12	contamination and pollution
12	rocks and deposits
12	precipitation (atmospheric)
11	USGS Quadrangles
11	tectonic processes
10	ocean characteristics
10	topics
10	coastal zones
10	geologic structure
9	landslides
9	mineral resources
9	water properties
9	water resources
9	natural resources
8	North America
8	oil resources
8	aerial photography
8	hydrology

Science Topics term usage Wednesday, 2008-02-20