Science Topics term usage 2007-01-31

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.)

138	geographic information systems (GIS)
103	earthquakes
80	volcanoes
47	lithostratigraphy
32	tectonic processes
32	earth structure
30	earthquake occurrences
26	tsunamis
21	drainage basins
20	earth characteristics
19	acid deposition
19	climate change
19	ground-water flow
18	snow and ice cover
17	habitat alteration
17	outer core (earth)
17	geologic structure
17	maps and atlases
16	animals
15	endangered species
14	erosion
14	sea-floor characteristics
14	rocks and deposits
14	topography
13	volcanic activity
13	contamination and pollution
13	cartography
13	health and disease
13	mineral resources
12	hurricanes
12	scientific careers
12	human impacts
12	landslides
12	geologic history
11	seismology
11	energy resources
11	water quality
11	geospatial datasets
11	hydrology
11	map coordinate systems

Science Topics term usage Wednesday, 2007-01-31