Science Topics term usage 2007-07-29

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.)

38	geographic information systems (GIS)
29	volcanoes
19	earthquakes
15	earth structure
14	botany
10	energy resources
9	geologic history
8	water quality
8	reef ecosystems
8	aquatic ecosystems
8	acid deposition
8	rocks and deposits
7	surface water quality
7	stream-gage measurement
6	maps and atlases
6	sea-floor characteristics
6	geologic structure
6	animals
6	precipitation (atmospheric)
6	ground water
6	volcanology
5	seismic refraction method
5	sediment transport
5	geology
5	hurricanes
5	marine ecosystems
5	tectonic processes
5	earthquake occurrences
5	climate change
4	aquatic biology
4	wetland ecosystems
4	desert ecosystems
4	magnetic field (earth)
4	fishery resources
4	gravitational field (earth)
4	earth characteristics
4	mineral resources
4	mountains
4	water chemistry
4	information system design and development

Science Topics term usage Sunday, 2007-07-29