Global Geology Grids
Data set | Reference (their format, may not match ours or yours, so reformat if necessary) | Web site | Notes |
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Amante, C., and Eakins, B.W., 2009, ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis: NOAA Technical Memorandum NESDIS NGDC-24, 19 p. http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO1/docs/ETOPO1.pdf | Download ETOPO1 |
This has ocean bathymetry and land elevations.
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SRTM 30 Plus |
Becker, J. J., D. T. Sandwell, W. H. F. Smith, J. Braud, B. Binder, J.
Depner, D. Fabre, J. Factor, S. Ingalls, S-H. Kim, R. Ladner, K. Marks,
S. Nelson, A. Pharaoh, R. Trimmer, J. Von Rosenberg, G. Wallace, P.
Weatherall., Global Bathymetry and Elevation Data at 30 Arc Seconds
Resolution: SRTM30_PLUS, Marine Geodesy, 32:4, 355-371, 2009. |
http://topex.ucsd.edu/WWW_html/srtm30_plus.html | SRTM 15+ for smaller areas, more detail |
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Current version 3: Straume, E.O., Gaina, C., Medvedev, S., Hochmuth, K., Gohl, K.,
Whittaker, J. M., et al. (2019). GlobSed: Updated total sediment
thickness in the world's oceans. Geochemistry, Geophysics, Geosystems,
vol.20. DOI:
10.1029/2018GC008115 Older version 2: Whittaker, Joanne, Alexey Goncharov, Simon Williams, R. Dietmar Muller, German Leitchenkov (2013) Global sediment thickness dataset updated for the Australian-Antarctic Southern Ocean, Geochemistry, Geophysics, Geosystems. Volume 14, Issue 8, DOI: 10.1002/ggge.20181 Oldest version 1: Divins, D.L., Total Sediment Thickness of the World's Oceans & Marginal Seas, NOAA National Geophysical Data Center, Boulder, CO, 2003. |
http://www.ngdc.noaa.gov/mgg/sedthick/index.html | Grid in Geotiff and other less useful formats. If Geotiff is not present, MICRODEM via GDAL can read the nc file. The current version 3 still has v2 in the file names, but the data hole near Japan has been filled in. |
Sediment type distribution | Adriana Dutkiewicz, R. Dietmar Muller, Simon O'Callaghan, and Hjortur Jonasson, 2015, Census of seafloor sediments in the world's ocean Geology, 43 (9): 795–798. G36883.1, doi:10.1130/G36883.1, http://geology.gsapubs.org/content/43/9/795.full | ftp://ftp.earthbyte.org/papers/Dutkiewicz_etal_seafloor_lithology | |
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Version 3: http://www.ngdc.noaa.gov/mgg/ocean_age/ocean_age_2008.html | Derived from models of plate spreading. There is a value about every 11 km. There is no data on continental crust, and problematic regions of oceanic crust. |
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EMAG2:
2 arc minute grid, available as Geotiff
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http://www.geomag.us/models/emag2.html | |
EGM2008: Geoid | The development and evaluation of the Earth Gravitational Model 2008 (EGM2008) - Nikolaos K. Pavlis, Simon A. Holmes, Steve C. Kenyon, John K. Factor; Journal of Geophysical Research: Solid Earth (1978-2012) Volume 117, Issue B4, April 2012 |
Larger scale DEMs, like SRTM,
MERIT, or ASTER GDEM,
provide good base maps for almost any geoscience-related project.
The grayscale hillshade provides an excellent starting map.
Last revision 1/26/2020