Science Topics term usage 2009-06-30

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.)

423	earthquakes
208	earthquake occurrences
132	maps and atlases
127	volcanoes
77	real-time monitoring and reporting
62	USGS map servers
55	topographic maps
50	mineral resources
47	energy resources
43	climate change
35	water quality
32	surface water (non-marine)
30	remote sensing
29	geospatial analysis
28	droughts
28	geologic maps
26	ground water
25	floods
20	contamination and pollution
20	oil resources
19	environmental health (human)
16	invasive species
14	ground-water quality
14	seismology
14	earthquake probabilities
13	streamflow
12	sediment transport
12	fires
11	avian influenza
9	metallic ores
9	geographic information systems (GIS)
8	dredging
7	ocean characteristics
7	river systems
7	global change
7	natural gas resources
7	endangered species
7	hydrology
6	ecological processes
6	geologic history

Science Topics term usage Tuesday, 2009-06-30