Science Topics term usage 2007-01-30

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.)

130	geographic information systems (GIS)
124	earthquakes
97	volcanoes
45	habitat alteration
38	earthquake occurrences
36	earth structure
29	tectonic processes
25	global warming
21	social sciences
21	contamination and pollution
21	geologic history
19	human impacts
18	climate change
17	acid deposition
17	ground water
17	tsunamis
17	streamflow
16	rocks and deposits
16	animals
16	maps and atlases
15	mineral resources
14	energy resources
14	land use and land cover
14	surface water (non-marine)
14	global change
13	landslides
13	ocean temperature
13	sea-floor characteristics
13	hurricanes
13	magnetic field (earth)
12	seismology
12	endangered species
12	floods
11	snow and ice cover
11	water quality
11	biodiversity
11	industrial pollution
11	erosion
11	water cycle
11	ocean sciences

Science Topics term usage Tuesday, 2007-01-30