Science Topics term usage 2008-01-25

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.)

63	geographic information systems (GIS)
48	earthquakes
43	wetland ecosystems
25	geology
23	earth structure
18	animals
17	mineral resources
17	water quality
17	acid deposition
17	volcanoes
16	climate change
16	earthquake occurrences
15	aerial photography
14	sediment transport
14	ground water
14	ecosystems
12	rocks and deposits
11	stream-gage measurement
11	floods
11	desert ecosystems
10	water properties
10	ground-water flow
10	endangered species
10	tectonic processes
10	contamination and pollution
9	ocean characteristics
9	water resources
9	ocean processes
9	geochemistry
9	USGS Quadrangles
9	landslides
9	real-time monitoring and reporting
8	abandoned mines and quarries
8	aquatic ecosystems
8	vegetation
8	geologic history
8	global warming
8	earth sciences
8	hydrology
8	droughts

Science Topics term usage Friday, 2008-01-25