Science Topics term usage 2008-01-18

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.)

59	earthquakes
54	volcanoes
45	geographic information systems (GIS)
28	real-time monitoring and reporting
23	earth structure
21	contamination and pollution
20	earthquake occurrences
20	islands
18	invasive species
17	acid deposition
14	climate change
13	hazards
12	human impacts
12	river systems
11	land use and land cover
11	desert ecosystems
11	animals
11	geologic history
10	erosion
10	energy resources
10	water quality
9	ground water
9	grassland ecosystems
9	global warming
9	maps and atlases
9	volcanic eruption prediction
9	fires
9	hurricanes
8	cartography
8	hydrology
8	floods
8	tectonic processes
8	plants (organisms)
8	endangered species
8	image collections
8	rocks and deposits
8	storms
8	mining hazards
8	ecosystems
7	natural resource extraction

Science Topics term usage Friday, 2008-01-18