Science Topics term usage 2007-02-13

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.)

140	earthquakes
109	geographic information systems (GIS)
106	volcanoes
45	roadways
45	rocks and deposits
40	earthquake occurrences
35	animals
31	tectonic processes
27	earth structure
23	tsunamis
23	acid deposition
22	climate change
20	mineral resources
18	ground-water flow
18	snow and ice cover
18	geospatial datasets
18	hurricanes
16	sea-floor characteristics
16	health and disease
16	global warming
16	outer core (earth)
16	landslides
16	contamination and pollution
15	human impacts
14	industrial pollution
14	precipitation (atmospheric)
14	maps and atlases
14	topography
14	ecological processes
14	image collections
14	water quality
13	land use and land cover
13	floods
13	endangered species
13	wildlife
12	hazards
12	topics
12	geologic structure
12	ground water
11	TMDL

Science Topics term usage Tuesday, 2007-02-13