Science Topics term usage 2007-02-27

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.)

120	volcanoes
113	earthquakes
106	geographic information systems (GIS)
55	geologic history
53	deformation (geologic)
34	earthquake occurrences
29	earth structure
28	animals
27	tectonic processes
23	acid deposition
22	climate change
20	rocks and deposits
19	land use and land cover
19	water quality
19	mineral resources
18	geologic structure
18	tsunamis
18	human impacts
17	ground-water flow
16	birds
16	global warming
16	ground water
15	contamination and pollution
15	maps and atlases
15	landslides
15	volcanic activity
14	health and disease
14	global change
14	water properties
13	drainage basins
13	endangered species
13	geospatial datasets
13	water chemistry
13	energy resources
13	geology
12	floods
12	gravitational field (earth)
12	real-time monitoring and reporting
12	snow and ice cover
11	magnetic field (earth)

Science Topics term usage Tuesday, 2007-02-27