The contours were scanned and vectorized at compilation scales ranging from 1:2,500 to 1:100,000.
The ARC/INFO® interchange files were created with the Arc (version 7.2.1)
command: 'export cover <input cover> <interchange file>'(the UNIX command
'unix2dos' was used to create the PC formatted interchange files) and can be
imported with the Arc command: 'import cover < interchange file> < output
cover> '.
All export interchange files are upwardly compatible, therefore problems may occur
importing these interchange files to an earlier version of ARC/INFO®.
The ASCII XYZ files contain multiple longitude (decimal degrees), latitude (decimal degrees), and depth (in meters) triplets. Each individual contour segment is separated by a ">".
Introduction | Geomorphology | Grids | Vector data files | Images