As an example, to calculate topographic relief (highest elevation minus lowest elevation of a given area) not all contour lines should be enhanced. Instead, a contour interval that allows the student to differentiate the individual elements of the model should be chosen. Testing strategies must ...
Figure 3.The contour map of the Hwanggang Dam reservoir in North Korea. Figure 4.The water level–surface area–storage relationship from the digital elevation model of the Hwanggang Dam reservoir. (a) The water level–surface area relationship for the satellite-based water surface area. (b)...