Science Topics term usage 2006-11-19

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.)

66	volcanoes
55	earthquakes
31	geographic information systems (GIS)
30	hydrogeology
27	tectonic processes
25	earthquake occurrences
24	acid deposition
20	earth structure
18	metadata development
16	desert ecosystems
15	climate change
14	erosion
13	maps and atlases
13	energy resources
12	contamination and pollution
11	human impacts
11	health and disease
11	geochemistry
10	floods
10	land use and land cover
10	tsunamis
10	ground water
9	water quality
9	industrial pollution
9	ground-water flow
8	precipitation (atmospheric)
8	landslides
8	global change
8	streamflow
8	endangered species
8	hydrology
7	oil resources
7	global warming
7	hurricanes
7	earth characteristics
7	land subsidence
7	drainage basins
6	nonpoint-source pollution
6	river systems
6	water chemistry

Science Topics term usage Sunday, 2006-11-19