Just Cerfing Vol. 7, Issue 8, August 2016 Volume 5, Issue 4, April, 2014 | Page 24

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Coastal Digital Elevation Models

Figure 3. Example of topographic creep introduced by gridding interpolation. (A) Color image of the GEBCO 1-minute global relief model along the
northwest coast of Iceland. Note how the data-poor fjords have positive elevation values in the model due to the predominance of surrounding positive
topography. (B) Color image of the same area in the ETOPO1 1-minute global relief model. Bathymetric data, in the presence of a coastline (red), were
gridded first in order to interpolate negative elevation values into the fjords.
Figure 4. Spatial and temporal scales
involved in coastal evolution, including typical classes