Science Topics term usage 2007-02-25

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.)

92	earthquakes
81	volcanoes
74	geographic information systems (GIS)
59	water sampling
30	earthquake occurrences
28	abandoned mines and quarries
28	earth structure
18	tectonic processes
18	geologic history
17	rocks and deposits
16	tsunamis
15	contamination and pollution
15	climate change
15	energy resources
13	water chemistry
13	ground-water flow
12	water quality
12	maps and atlases
11	topography
11	floods
11	magnetic field (earth)
11	hydrology
11	acid deposition
11	animals
11	hazards
10	life sciences
10	global change
10	volcanic activity
10	cartography
9	vertebrates
9	endangered species
9	surface water (non-marine)
9	field sampling
9	meteorites
9	droughts
8	industrial pollution
8	map coordinate systems
8	landslides
8	desert ecosystems
8	sediment transport

Science Topics term usage Sunday, 2007-02-25