Science Topics term usage 2009-06-22

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.)

1022	earthquakes
558	earthquake occurrences
133	volcanoes
130	maps and atlases
100	real-time monitoring and reporting
54	topographic maps
39	climate change
39	floods
38	USGS map servers
38	ground water
33	energy resources
30	water quality
30	seismology
30	mineral resources
27	surface water (non-marine)
27	earthquake probabilities
21	geologic maps
18	droughts
17	remote sensing
16	avian influenza
15	oil resources
15	geospatial analysis
14	Alaska
13	contamination and pollution
13	volcanic activity
13	invasive species
9	natural gas resources
8	desert ecosystems
8	soil resources
8	hydrology
8	surface-water level
8	river systems
8	geographic information systems (GIS)
7	environmental health (human)
7	surface water quality
6	vertebrates
6	sediment transport
6	earth structure
6	streamflow
6	hazards

Science Topics term usage Monday, 2009-06-22