Science Topics term usage 2007-02-22

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.)

177	volcanoes
149	earthquakes
103	geographic information systems (GIS)
36	earthquake occurrences
32	animals
31	tectonic processes
30	fire damage
30	earth structure
28	water quality
28	acid deposition
27	climate change
22	energy resources
20	coastal zones
19	landslides
19	hazards
19	floods
18	maps and atlases
18	human impacts
18	tsunamis
18	sediment transport
18	topography
17	geospatial datasets
16	invasive species
16	hurricanes
16	endangered species
15	global warming
15	volcanic activity
15	contamination and pollution
15	geologic structure
14	geologic history
14	water supply and demand
14	rocks and deposits
14	earth characteristics
13	water chemistry
13	cartography
13	gravitational field (earth)
13	snow and ice cover
13	precipitation (atmospheric)
13	global change
12	land surface characteristics

Science Topics term usage Thursday, 2007-02-22