What is a depression in a topographic map?
Understand the Problem
The question is asking for the definition or explanation of a depression as represented in a topographic map. A depression typically refers to a lower area in the landscape that is indicated by closed contour lines that bulge inward.
Answer
A depression is indicated by concentric contour lines with hachure marks pointing inward.
A depression on a topographic map is indicated by contour lines forming concentric circles with hachure lines pointing towards the center, representing a low point or a sinkhole.
Answer for screen readers
A depression on a topographic map is indicated by contour lines forming concentric circles with hachure lines pointing towards the center, representing a low point or a sinkhole.
More Information
Hachure lines are short lines perpendicular to the contour lines pointing towards the area of lower elevation, providing a visual indication of a depression.
Sources
- Flexi Says: A depression on a topographic map - ck12.org
- Depression Contours - academic.brooklyn.cuny.edu
- Peaks and Depressions Map - Introduction to Surfer - Golden Software - surferhelp.goldensoftware.com
