sometimes when maps are representing areas that are very flat, supplementary contours are used over part or all of the map to show local variations.
A supplementary contour line on a map represents a line that is drawn at a certain elevation interval, typically smaller or different than the standard contour interval. These lines help to provide more detailed information about the terrain, especially in areas with steep slopes or significant changes in elevation. They are useful for identifying smaller features like ridges, valleys, or changes in slope that may not be captured by the main contour lines.
Index contour lines are thicker and usually have their elevation labeled. They help users quickly identify key elevations on a topographic map. In contrast, regular contour lines show the shape and elevation of the land but do not have specific labels.
The definition of a contour interval is the difference in elevation between two consecutive lines.
On a topographic map, contour lines that are closer together indicate a steeper slope.
The name for the elevation difference between adjacent contour lines is the contour interval.
There are five types: Index Intermediate Supplementary Depression Carrying
A supplementary contour line on a map represents a line that is drawn at a certain elevation interval, typically smaller or different than the standard contour interval. These lines help to provide more detailed information about the terrain, especially in areas with steep slopes or significant changes in elevation. They are useful for identifying smaller features like ridges, valleys, or changes in slope that may not be captured by the main contour lines.
Angles are complimentary or supplementary. Lines aren't.
Then they would not be supplementary lines.
The darker contour lines on map are called index contour lines. Numbers that indicate elevations are often written on these lines.
Hachured contour lines are contour lines with ticks pointing downslope that indicate a depression on a topographic map.
Index contour lines are thicker and usually have their elevation labeled. They help users quickly identify key elevations on a topographic map. In contrast, regular contour lines show the shape and elevation of the land but do not have specific labels.
The difference in elevation between two contour lines that are side by side is the contour interval. The contour interval is the vertical distance between two adjacent contour lines on a topographic map.
The definition of a contour interval is the difference in elevation between two consecutive lines.
The main topographic map rules include contour lines never crossing, contour lines close together represent steep terrain, contour lines spread out represent flat terrain, and elevation is indicated by the contour lines.
The closer the contour lines, the steeper is the slope.
The land is steep if the contour lines are close together