Contour-profile instructions - page 1

Each group should start with the PRE-event map and a black pencil. Notice that each contour on the map has a label with the depth in meters. Depths are also listed on the y-axis of the contour profile worksheet. To show how to make a profile, we will use profile #3 along 45° 55.8' of latitude as an example. Begin by folding the PRE-event bathymetric map along the 45° 55.8' latitude line. Keep the map folded on this line of latitude while you work on this profile. Line up the margins of the map and the worksheet.

illustration of chart folded over worksheet Start on the left side of the map, and determine the depth of the first contour that crosses the fold line (in this case 1530). Slide the map up or down on the worksheet until you are at the 1530 depth line on the worksheet. Make a dot with the black pencil here on the worksheet where the 1530 contour line crosses, or touches, the fold line.
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