‘To say that the National Geophysical Data Center (NGDC) brings a wide range of scientific materials together in one location online would perhaps be a bit of an understatement. This site brings together over 300 digital and analog databases, which include those that deal with marine conditions, lake cores, seismic reflection, and ecosystems. Visitors can feel free to browse around in this list of databases via the “Data and Information” tab located on the top of the site’s homepage, or they can also perform a more detailed search as well. It is worth noting that there are six featured types of databases on the homepage, which include solar events, geomagnetic data, and natural hazards. Additionally, a good way to keep abreast of new materials on the site is by looking at their “News and Features” area, which profiles data sets of note.’
The NGDC is one of 3 National Oceanic and Atmospheric Administration national data centres in the US. The types of data available via the NGDC are divided into land, marine, satellite, snow and ice, and solar-terrestrial.