Science Topics term usage 2008-03-18

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.)

376	earthquakes
176	volcanoes
144	earthquake occurrences
142	maps and atlases
95	real-time monitoring and reporting
73	climate change
66	USGS map servers
66	energy resources
63	water quality
60	surface water (non-marine)
57	contamination and pollution
56	ground water
56	mineral resources
44	geospatial analysis
40	avian influenza
39	invasive species
36	environmental health (human)
33	remote sensing
30	fires
26	acid deposition
24	droughts
21	global warming
17	seismology
17	earthquake probabilities
16	desert ecosystems
16	floods
15	volcanic activity
15	ground-water flow
15	human impacts
15	river systems
15	earth structure
13	aquatic ecosystems
13	tsunamis
13	ecosystems
13	oil resources
12	marine geology
12	endangered species
12	plants (organisms)
11	rocks and deposits
11	ocean characteristics

Science Topics term usage Tuesday, 2008-03-18