Science Topics term usage 2007-05-17

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.)

89	volcanoes
88	geographic information systems (GIS)
77	earthquakes
39	ground water
30	acid deposition
27	earthquake occurrences
24	human impacts
24	earth structure
24	streamflow
22	beaches
20	energy resources
20	contamination and pollution
19	ground-water flow
18	mineral resources
18	map coordinate systems
17	rocks and deposits
16	oil resources
15	climate change
14	water quality
14	stream-gage measurement
14	maps and atlases
13	surface water (non-marine)
13	volcanic activity
13	global warming
12	ocean temperature
12	hazards
12	aerial photography
11	geologic history
11	ocean characteristics
11	precipitation (atmospheric)
10	industrial pollution
10	endangered species
10	tectonic processes
10	water supply and demand
10	land surface characteristics
10	geography
9	ground-water level
9	ecosystems
9	topography
9	landslides

Science Topics term usage Thursday, 2007-05-17