National Geophysical Data Center
http://www.ngdc.noaa.gov/ngdc.html
The website has over 300 digital and analog databases which deal with land, marine, satellite, snow and ice, and solar terrestrial topics. The homepage highlights six main areas to browse: Space and Solar Events, Earth Observations from Space, Geomagnetic Data and Models, Bathymetry and Global Relief, Marine Geography and Geophysics, and Natural Hazards.



