Science Topics term usage 2007-11-20

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.)

63	bedrock geologic units
62	earthquakes
52	volcanoes
48	geographic information systems (GIS)
28	acid deposition
26	earth structure
24	earthquake occurrences
23	human impacts
21	tectonic processes
20	climate change
19	mineral resources
18	ecosystems
18	volcanic rocks
17	hurricanes
16	global warming
16	land use and land cover
15	ground water
15	water supply and demand
14	contamination and pollution
14	hydrogeology
14	streamflow
14	real-time monitoring and reporting
13	rocks and deposits
12	water cycle
12	animals
12	tsunamis
12	geologic structure
12	drainage basins
12	water use
11	sediment transport
11	global change
11	water chemistry
11	habitats
11	earth characteristics
11	floods
10	precipitation (atmospheric)
10	energy resources
10	endangered species
10	water quality
10	oil resources

Science Topics term usage Tuesday, 2007-11-20