The National Geophysical Data Center is a...

The National Geophysical Data Center is a resource for glaciology, marine geology and geophysics, paleoclimatology, solar-terrestrial physics and solid earth geophysics. Sections contain images, reports, publications and information on topics such as bathymetry, ocean drilling/seafloor sediment/rock sample data, the geomagnetic field, solar and upper atmospheric data, global climate and heat flow. The addresses are:

https://www.ngdc.noaa.gov/

gopher://gopher.ngdc.noaa.gov/

ftp://ftp.ngdc.noaa.gov/