Science Topics term usage 2007-09-05

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.)

183	ground-water flow
104	earthquakes
94	geographic information systems (GIS)
53	earthquake occurrences
46	volcanoes
39	tectonic processes
37	earth structure
30	acid deposition
26	rocks and deposits
25	hurricanes
24	contamination and pollution
23	tsunamis
20	climate change
19	human impacts
18	water quality
17	fires
17	energy resources
16	aerial photography
16	ground water
16	floods
15	droughts
15	remote sensing
15	landslides
15	erosion
15	real-time monitoring and reporting
14	life sciences
14	hydrogeology
14	streamflow
13	maps and atlases
13	mineral resources
12	animals
12	oil resources
12	aquatic ecosystems
11	health and disease
11	impact cratering
11	endangered species
11	water resources
11	field sampling
11	sediment transport
10	stream-gage measurement

Science Topics term usage Wednesday, 2007-09-05