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5 lut 2022 · There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary. 1. Index lines are the thickest contour lines and are usually labeled with a number at one point along the line.
index contour line. [symbology] On a topographic map, a contour line that is drawn with a thicker line symbol than the intermediate contour lines and usually labeled with the elevation that it represents. Depending on the contour interval, every fourth or fifth contour line may be an index contour.
For a quick definition, a contour line joins points of equal and constant values. For example, contours on an elevation have constant heights that are the same on each line in a topographic map.
26 sty 2024 · Contour lines are all the small, squiggly lines found on a topographic map. These are the cornerstone of a topographic map, and connect points with the same elevation above or below sea level.
28 sie 2023 · Contour maps display lines called "contour lines" that connect points of equal elevation above a reference datum, typically mean sea level. These lines help visualize the topography and relief of a region, making it easier to understand the landforms and changes in elevation.
Contour lines on topographic maps are shown as brown or black lines, and all maps will have a contour interval that is specific for that map. Note that the elevations represented by the contour lines are not always labeled on each line (e.g., Figure 7.2).
Topographic maps can describe vertical information through the use of contour lines (contours). A contour line is an isoline that connects points on a map that have the same elevation. Contours are often drawn on a map at a uniform vertical distance.
