Science Topics term usage 2007-11-30

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.)

81	earthquakes
68	geographic information systems (GIS)
59	volcanoes
49	glaciology
31	acid deposition
25	climate change
23	human impacts
22	earth structure
21	earthquake occurrences
20	land use and land cover
19	water quality
17	global warming
16	desert ecosystems
15	volcanic activity
14	geologic history
14	climatology
14	rocks and deposits
14	tsunamis
12	erosion
11	mineral resources
11	precipitation (atmospheric)
11	energy resources
11	streamflow
11	droughts
10	water chemistry
10	landslides
10	ecosystems
10	real-time monitoring and reporting
10	ground-water flow
9	tectonic processes
9	animals
9	floods
9	habitats
9	endangered species
9	global change
9	sediment transport
9	hurricanes
9	aerial photography
8	planetary bodies
8	contamination and pollution

Science Topics term usage Friday, 2007-11-30