Science Topics term usage 2009-03-28

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.)

727	earthquakes
306	earthquake occurrences
266	volcanoes
106	real-time monitoring and reporting
91	maps and atlases
75	floods
51	climate change
44	USGS map servers
42	surface water (non-marine)
36	energy resources
35	droughts
33	water quality
33	earthquake probabilities
32	mineral resources
30	remote sensing
29	ground water
29	avian influenza
25	topographic maps
25	animals
24	invasive species
23	geospatial analysis
23	contamination and pollution
21	seismology
15	environmental health (human)
14	volcanic activity
14	oil resources
14	California
13	fires
12	geologic maps
11	hydrology
10	streamflow
10	river systems
10	acid deposition
9	stream-gage measurement
8	land use and land cover
8	nutrient content (water)
8	global warming
8	hurricanes
7	surface water quality
7	health and disease

Science Topics term usage Saturday, 2009-03-28