Science Topics term usage 2006-07-13

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.)

81	geographic information systems (GIS)
69	earthquakes
58	ocean salinity
32	volcanoes
27	sea-level change
23	maps and atlases
20	water quality
18	human impacts
17	land use and land cover
16	rocks and deposits
16	birds
14	ground water
14	climate change
14	hydrology
14	earth structure
13	grain-size analysis
13	streamflow
13	geologic history
12	land surface characteristics
12	cartography
12	mineral resources
12	hazards
11	earthquake occurrences
11	surface water (non-marine)
11	animals
11	aerial photography
10	water use
10	energy resources
10	global warming
10	stream-gage measurement
9	global change
9	limnology
9	water supply and demand
9	acid deposition
9	endangered species
9	planetary bodies
8	glaciation
8	life sciences
8	sedimentology
8	surface water quality

Science Topics term usage Thursday, 2006-07-13