Science Topics term usage 2007-03-09

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.)

101	earthquakes
99	geographic information systems (GIS)
52	volcanoes
34	vertebrate zoology
32	earthquake occurrences
23	mineral resources
22	rocks and deposits
21	earth structure
20	tides (oceanic)
19	tectonic processes
19	sea-floor characteristics
16	ground water
16	energy resources
15	ocean characteristics
15	acid deposition
15	floods
14	land use and land cover
13	climate change
12	water quality
12	global warming
12	maps and atlases
12	impact cratering
12	tsunamis
11	hurricanes
11	real-time monitoring and reporting
11	ground-water flow
11	streamflow
11	contamination and pollution
11	stream discharge
10	global change
10	geochemistry
10	surface water (non-marine)
10	hazards
10	health and disease
10	ground-water quality
10	cartography
9	glaciation
9	biodiversity
9	snow and ice cover
9	oil resources

Science Topics term usage Friday, 2007-03-09