Science Topics term usage 2007-02-20

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	volcanoes
113	earthquakes
107	geographic information systems (GIS)
58	hyperspectral imaging
43	earthquake occurrences
29	acid deposition
27	tectonic processes
24	human impacts
23	earth structure
21	remote sensing
21	topography
20	land use and land cover
19	rocks and deposits
19	industrial pollution
18	climate change
18	aerial photography
18	streamflow
17	landslides
17	floods
17	geologic history
16	biogeography
16	erosion
16	tsunamis
15	mineral resources
14	animals
14	contamination and pollution
13	invasive species
13	sea-floor characteristics
13	global change
13	global warming
13	maps and atlases
13	sediment transport
12	endangered species
12	ground water
12	topics
12	energy resources
11	hazards
11	waste treatment and disposal
11	earthquake probabilities
11	geologic structure

Science Topics term usage Tuesday, 2007-02-20