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#Relief contour line definition pdf#

It provide the basis for coloring method.

This makes it convenient to identify significant features in the landscape. Closed contour lines with higher values represent hilltops, while closed contour lines with lower values indicate depressions or valleys.

Easy Identification of High and Low Points: Contour lines that form closed loops indicate high or low points on the map.

This consistency facilitates communication and interpretation of maps across different regions and disciplines.

Standardized Representation: Contour lines follow standardized conventions, making them universally understood by map users.

Digital elevation models (DEMs) can be used to generate accurate and precise contour lines, enabling advanced analysis and visualization of relief data. Compatibility with Digital Mapping Tools: Contour lines can be easily incorporated into digital mapping tools and Geographic Information Systems (GIS).By reading contour interval it is easy to determine the different elevation of the landscape.It depict slope and size of different landforms on map.Advantages of using contour to represent relief on the map The following are the advantages and disadvantages of using contour as the method of representing relief on the mapped area, starting with advantages. two contours of different elevation usually do not cross each other.when two or more contour lines merge with each other, they represent feature of vertical slope such as cliff and waterfall.

closely spaced contour lines represent steep slopes while widely spaced contours represent gentle slope.

contour lines and their shapes represent the height and slope or gradient of the landforms.

a contour lines is drawn to show places of equal heights.

The horizontal distance between contour lines is large when the slope is gentle and decreases with increasing slope gradient features of contour lines While contour interval between two successive contour lines is constant, the horizontal distance (horizontal equivalent) between contour lines varies from place to place depending on the nature of the slope. The contour lines on the map provide a useful insight into the topography of an areaĮarlier ground surveys and leveling were used to draw contours on topographical maps however, nowadays aerial photographs are used insteadĭistance between one contour line and another is called contour interval and is generally expressed in meters.

#Relief contour line definition pdf#

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