Science Topics term usage 2007-03-14

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.)

93	earthquakes
90	geographic information systems (GIS)
84	volcanoes
41	geothermal resources
34	tectonic processes
31	earthquake occurrences
27	earth structure
25	contamination and pollution
23	acid deposition
23	floods
22	maps and atlases
22	rocks and deposits
22	metallic ores
22	human impacts
21	water quality
21	climate change
19	tsunamis
18	natural gas resources
17	energy resources
17	land use and land cover
17	mineral resources
16	streamflow
16	ground-water flow
15	landslides
15	ground water
15	ocean characteristics
14	global warming
13	global change
13	ecosystems
13	core (earth)
13	erosion
12	rivers
12	desert ecosystems
12	aquifers
12	oil resources
12	industrial pollution
12	invasive species
12	health and disease
12	water chemistry
11	map coordinate systems

Science Topics term usage Wednesday, 2007-03-14