Science Topics term usage 2007-03-23

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.)

94	geographic information systems (GIS)
92	earthquakes
75	volcanoes
45	grain-size analysis
35	earthquake occurrences
22	maps and atlases
17	geologic history
17	erosion
16	surface water (non-marine)
16	ground water
16	streamflow
16	acid deposition
15	earth structure
15	tectonic processes
14	natural resource management
13	rocks and deposits
13	floods
13	cartography
12	tsunamis
11	ground-water flow
11	human impacts
11	marine geology
11	sediment transport
11	desert ecosystems
11	real-time monitoring and reporting
10	animals
10	water quality
10	stream-gage measurement
10	industrial pollution
10	mineral resources
10	aerial photography
10	oil resources
9	contamination and pollution
9	global warming
9	parks
9	landslides
9	map coordinate systems
8	land use and land cover
8	climate change
8	health and disease

Science Topics term usage Friday, 2007-03-23