Science Topics term usage 2007-01-25

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.)

126	volcanoes
121	geographic information systems (GIS)
117	earthquakes
58	videography
40	mineral resources
39	earth structure
29	earthquake occurrences
28	animals
28	stream-gage measurement
28	streamflow
27	ground water
23	floods
23	tectonic processes
22	rocks and deposits
20	magnetic field (earth)
16	land use and land cover
16	water quality
16	hurricanes
16	health and disease
16	snow and ice cover
16	aerial photography
16	acid deposition
15	energy resources
15	volcanic activity
15	contamination and pollution
15	tsunamis
15	climate change
14	map coordinate systems
14	maps and atlases
14	human impacts
14	cartography
13	erosion
13	geologic history
13	geography
12	surface water (non-marine)
12	landslides
12	seismology
11	industrial pollution
11	endangered species
11	global change

Science Topics term usage Thursday, 2007-01-25