Science Topics term usage 2009-10-23

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.)

1048	earthquakes
507	earthquake occurrences
308	volcanoes
210	maps and atlases
185	real-time monitoring and reporting
110	energy resources
105	climate change
98	mineral resources
88	contamination and pollution
82	topographic maps
69	floods
67	water quality
64	ground water
64	invasive species
55	avian influenza
55	map interfaces
53	surface water (non-marine)
50	droughts
48	geospatial analysis
42	human impacts
40	remote sensing
39	geologic maps
36	earthquake probabilities
33	global warming
31	oil resources
26	fires
25	metallic ores
23	stream discharge
23	geographic information systems (GIS)
22	land use and land cover
22	environmental health (human)
21	river systems
21	topics
21	soil resources
21	surface water quality
18	earth structure
17	seismology
16	sea-floor characteristics
16	acid deposition
16	aerial photography

Science Topics term usage Friday, 2009-10-23