Science Topics term usage 2007-03-21

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.)

99	geographic information systems (GIS)
85	earthquakes
64	volcanoes
32	climate change
30	acid deposition
29	earthquake occurrences
29	fishery management
27	earth structure
24	floods
23	rocks and deposits
22	tectonic processes
21	sediment transport
19	mineral resources
17	surface water (non-marine)
17	maps and atlases
17	endangered species
17	geologic history
16	landslides
16	topography
16	nonmetallic resources
15	natural gas resources
15	energy resources
15	erosion
14	contamination and pollution
14	human impacts
14	hazards
14	ground water
14	global change
13	map coordinate systems
13	aerial photography
13	animals
13	water chemistry
12	coastal zones
12	global warming
12	water use
12	glaciation
11	water resources
11	drainage basins
11	geochemistry
11	sea-floor characteristics

Science Topics term usage Wednesday, 2007-03-21