. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 88 INTERNATIONAL HYDROGRAPHIC REVIEW 5°N. 10 20 NAUTICAL MILES 3° 84°W 83 Fig. 4. — Generalized contour map (200-metre interval) of area shown in figures 2 and 3. Contours are also based on a single northeasterly trending trackline which is not shown here or in figures 2 and 3 for clarity of presentation. The most noticeable aspect of figure 2 is the ruggedness of the sea floor although it has about the same general depth throughout the area. Abrupt
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography 88 INTERNATIONAL HYDROGRAPHIC REVIEW 5°N. 10 20 NAUTICAL MILES 3° 84°W 83 Fig. 4. — Generalized contour map (200-metre interval) of area shown in figures 2 and 3. Contours are also based on a single northeasterly trending trackline which is not shown here or in figures 2 and 3 for clarity of presentation. The most noticeable aspect of figure 2 is the ruggedness of the sea floor although it has about the same general depth throughout the area. Abrupt changes in depths of hundreds of metres with slopes of 15° to 20° or more are common. It is difficult to evaluate the problems in contouring such an area on the basis of the profiles. Figure 3 shows in map form how complex the area is for one attempting to contour it with a 100-metre contour interval. This figure was made by using all of the depths digitized from the sounding profiles. The intersections of the tracklines with the 100-metre isolines (, where 100-metre contour lines would cross) are indicated by alternating tick marks normal to the track (this does not necessarily imply that the contours trend normal to the trackline). Minimum depths (peaks seen on the fathograms) are indicated by dots along the trackline. For clarity of presentation the values of the individual contour crossings at each tick are not given and the deeps that exist between the peaks are not shown. 605. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atlantic Oceanographic and Meteorological Laboratories; Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories; Environmental Research Laboratories (U. S. ). Washington, D. C. : U. S. Dept. of Commerce, Env
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