Science Topics term usage 2007-01-26

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.)

114	geographic information systems (GIS)
96	volcanoes
80	earthquakes
33	habitats
25	earthquake occurrences
22	earth structure
21	videography
21	tectonic processes
20	acid deposition
19	animals
19	magnetic field (earth)
18	rocks and deposits
18	maps and atlases
18	ground water
17	volcanic activity
17	climate change
17	contamination and pollution
16	erosion
15	human impacts
15	aerial photography
14	seismology
14	industrial pollution
13	streamflow
13	tsunamis
13	mineral resources
13	energy resources
12	invasive species
12	map coordinate systems
12	geologic structure
12	land use and land cover
11	geologic history
11	gravitational field (earth)
11	geography
11	earth sciences
10	endangered species
10	hydrology
10	hazards
10	hurricanes
10	geochemistry
9	plants (organisms)

Science Topics term usage Friday, 2007-01-26