Visual comparison of global bathymetric datasets

See main bathymetry page for descriptions of the dataset and where to get them.

  ETOPO1 (1-arc-minute) is a noisy, but free, global dataset.
ETOPO2 ETOPO2 (2-arc-minute) is an older version of ETOPO1.
GEBCO GEBCO (1-arc-minute) is "public" (but actually expensive and non-redistributable?).  Note how the data is smooth and well-behaved, but misses features which the lower-resolution ETOPO2 captured.
Local Accurate local bathymetry data for visual comparison, showing the details that the global datasets miss.