Science Topics term usage 2006-09-02

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	water quality
39	geographic information systems (GIS)
33	earthquakes
25	floods
21	acid deposition
21	atmospheric sciences
18	earth structure
18	water supply and demand
17	glaciation
16	global change
16	surface water (non-marine)
16	ground-water quality
16	climate change
15	erosion
15	volcanoes
14	ground water
14	health and disease
14	geochemistry
14	contamination and pollution
13	droughts
13	information system design and development
13	rocks and deposits
13	geologic history
12	industrial pollution
12	global warming
12	drinking water use
12	climatology
12	ocean characteristics
11	topics
11	marine water quality
11	surface water quality
11	land surface characteristics
11	sediment transport
11	maps and atlases
11	mining hazards
11	desertification
10	biological and physical processes
10	atmospheric deposition (chemical & particulate)
10	waste treatment and disposal
10	human impacts

Science Topics term usage Saturday, 2006-09-02