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Appendix C—NGDC Holdings
Dataset/Category Name
Typea
Digital (D) or Analog (A)
Volume (Mbytes)
Analog Size
% Online
Aurora Data
All-sky camera films
STP
D&A
16,000 paper, 6,200 microfilm
0
Auroral radar, spectral line data, visual
STP
A
358
1,020 microfilm, paper
2
Auroras and other lights viewed from space and Auroras Australis slides
STP
A
72 slides
0
Airglow
STP
D&A
4.56
3,340 pages, UAG-1
80
Bathymetry, Topography, and Relief
Bathymetry of the Gulf of Mexico on CD-ROM
MGG
D
600
0
Bathymetry/relief posters and slides
MGG
A
11 posters, 40 slides
0
Bathymetry/topography gridded data
MGG
D
0.2
0
Coastal relief models
MGG
D
30,000
50
Coastal relief model U.S./northeast Atlantic on CD-ROM
MGG
D
15,000
50
Coastal relief model U.S./Southeast Atlantic on CD-ROM
MGG
D
15,000
50
Coastal relief model Florida/eastern Gulf of Mexico
MGG
D
3,000
50
Coastal relief western Gulf of Mexico
MGG
D
1,200
50
Coastal relief model central Gulf of Mexico
MGG
D
1,200
50
Coastlines/shorelines digital
MGG
D
100
Estimated and measured seafloor topography
MGG
D
0
ETOPO2 2-minute gridded global elevations
MGG
D
600
50
