Science Topics term usage 2006-12-06

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.)

156	earthquakes
141	volcanoes
118	geographic information systems (GIS)
61	seafloor features
39	tectonic processes
35	erosion
33	earth structure
30	earthquake occurrences
28	contamination and pollution
27	acid deposition
27	floods
25	human impacts
24	ecological competition
23	climate change
23	tsunamis
22	landslides
22	mineral resources
21	rocks and deposits
21	oil resources
19	desert ecosystems
19	geologic structure
18	magnetic field (earth)
17	ground water
17	water quality
16	streamflow
16	sea-floor characteristics
16	hydrology
16	global warming
15	sediment transport
15	endangered species
14	fire damage
14	hazards
14	hurricanes
14	ground-water flow
14	sedimentary rocks
13	snow and ice cover
13	water resources
13	water chemistry
13	energy resources
12	map coordinate systems

Science Topics term usage Wednesday, 2006-12-06