Science Topics term usage 2006-07-14

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.)

65	geographic information systems (GIS)
48	earthquakes
44	oxygen isotope analysis
33	volcanoes
28	maps and atlases
25	ground water
21	tectonic processes
19	ocean salinity
19	energy resources
18	human impacts
17	land use and land cover
17	earth structure
17	climate change
17	streamflow
16	wildlife
16	mineral resources
15	aerial photography
15	erosion
15	surface water (non-marine)
14	water quality
14	rocks and deposits
14	fires
13	floods
13	acid deposition
13	snow and ice cover
12	magnetic field (earth)
12	ground-water flow
12	geospatial analysis
11	glaciation
11	contamination and pollution
10	invasive species
10	meteorites
10	geologic history
10	coastal zones
10	hurricanes
10	sediment transport
10	endangered species
10	geologic structure
10	earthquake occurrences
10	land surface characteristics

Science Topics term usage Friday, 2006-07-14