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A Three-Dimensional Bathyorographic Map of Canton Island: A Study in the Problems of Constructing and Symbolizing Maps of Marine Environments

George F. Jenks and Paul V. Crawford
Geographical Review
Vol. 60, No. 1 (Jan., 1970), pp. 69-87
DOI: 10.2307/213345
Stable URL: http://www.jstor.org/stable/213345
Page Count: 19
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Three-Dimensional Bathyorographic Map of Canton Island: A Study in the Problems of Constructing and Symbolizing Maps of Marine Environments
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Abstract

Three-dimensional maps of earth phenomena usually place the map reader in an elevated, or "bird's eye," position in the atmosphere. In the present experiment an attempt has been made to utilize various 3-D cues in such a manner as to place the viewer within the marine environment. This unique position seems to provide the map reader with a dynamic view of the submarine environment and at the same time gives him a complete visual sweep from the water-atmosphere interface to the abyssal floor. Traditional methods for the construction of 3-D maps are reviewed, and a new technique of composite, parallel-perspective projection is developed. It would appear that composite 3-D map construction is an interim procedure, lying between the traditional methods and the imminent computer production of such maps.

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