Science Topics term usage 2009-03-15

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.)

290	earthquakes
166	volcanoes
120	maps and atlases
105	earthquake occurrences
70	real-time monitoring and reporting
55	USGS map servers
51	floods
50	surface water (non-marine)
46	mineral resources
44	energy resources
44	climate change
42	topographic maps
40	ground water
35	water quality
34	geospatial analysis
33	contamination and pollution
32	remote sensing
30	invasive species
28	droughts
26	fires
22	environmental health (human)
18	avian influenza
14	oil resources
12	river systems
12	USGS budget
11	erosion
11	health and disease
11	streamflow
11	earthquake probabilities
11	geologic maps
10	human impacts
10	global warming
10	acid deposition
10	desert ecosystems
9	bathymetry
8	tsunamis
8	ocean characteristics
7	volcanic activity
6	water use
6	rocks and deposits

Science Topics term usage Sunday, 2009-03-15