Science Topics term usage 2008-02-19

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.)

70	geographic information systems (GIS)
64	earthquakes
39	aquatic ecosystems
31	volcanoes
30	earthquake occurrences
21	earth structure
20	acid deposition
18	climate change
18	endangered species
17	floods
16	plants (organisms)
14	rocks and deposits
14	human impacts
13	water quality
13	social sciences
13	field methods
13	real-time monitoring and reporting
12	energy resources
12	microwave imaging
12	land use and land cover
12	contamination and pollution
11	ocean characteristics
11	desert ecosystems
11	erosion
11	USGS Quadrangles
10	aerial photography
10	freshwater ecosystems
10	river systems
9	habitats
9	ground water
9	topics
9	geologic structure
9	sea-floor characteristics
9	planetary bodies
9	sediment transport
9	geologic history
8	earth characteristics
8	meteorites
8	global warming
8	geography

Science Topics term usage Tuesday, 2008-02-19