Science Topics term usage 2006-07-11

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.)

92	geographic information systems (GIS)
61	volcanoes
51	earthquakes
35	geomorphology
30	mammals
29	ground water
22	mineral resources
21	water quality
20	climate change
18	geologic history
17	ground-water flow
16	geochemistry
15	acid deposition
15	rocks and deposits
15	earth structure
14	aerial photography
14	energy resources
14	streamflow
14	surface water (non-marine)
13	water chemistry
12	water resources
12	tectonic processes
11	oil resources
11	water properties
11	hydrologic processes
10	field sampling
10	land use and land cover
10	magnetic field (earth)
10	sediment transport
10	global change
10	endangered species
10	mathematical modeling
10	glaciation
10	ecological processes
9	contamination and pollution
9	human impacts
9	fishery resources
9	invasive species
9	precipitation (atmospheric)
9	erosion

Science Topics term usage Tuesday, 2006-07-11