Science Topics term usage 2007-05-20

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.)

64	volcanoes
49	earthquakes
45	geographic information systems (GIS)
38	biogeography
32	animals
31	seismic refraction method
27	volcanic features
24	field sampling
23	geologic history
19	earth structure
19	earthquake occurrences
18	aquatic ecosystems
17	image collections
16	plants (organisms)
15	ecology
14	birds
14	surface water (non-marine)
14	hydrology
14	endangered species
14	hazards
14	life sciences
14	maps and atlases
13	aerial photography
13	planetary sciences
13	GPS measurement
13	wildlife
13	planetary bodies
13	herbivores
12	contamination and pollution
12	coastal zones
12	rivers
12	water quality
12	capturing (animals)
12	computational methods
12	nonindigenous species
12	energy resources
12	ground water
12	instrument design and development
11	core (earth)
11	aquatic biology

Science Topics term usage Sunday, 2007-05-20