Topographic isolation

Under dominance is understood in the geography of the radius of the area, which overlooks a summit, mountain or other geomorphic landform. The dominance is next to the prominence of the most important criterion to classify a summit as an independent mountain.

Determination

The dominance of a mountain can be determined as the distance to the nearest, the same high point at the bottom or the side of a higher mountain. It is specified as length. A mountain with dominance x km is therefore within x km is the highest elevation.

To determine the dominance of a mountain, one measures the minimum distance of the summit to the next level line of equal height of a higher summit. Is the mountain very dominant, so that the curvature of the earth must be taken into account, one can calculate the distance from the coordinates of two points per orthodrome.

While the dominance is measured in a direct line to the next higher summit, the saddle height is measured along the ridge curve. The reference for the Mountain Vertical separation are not necessarily the same as for the dominance.

The dominance is not to be confused with the model developed by Eberhard Jurgalski concept of orographic dominance, in the saddle of a mountain is set in relation to its height.

Examples

• The summit of the 2962 m above sea level. NHN high Zugspitze next 2962 -meter contour line surrounds the Zwölferkogel ( 2988 m) in the Stubai Alps. The distance between the Zugspitze and the contour is as the crow flies 25.8 km; the Zugspitze is thus within a radius of 25.8 km, the highest elevation. Their dominance is thus 25.8 km.

• Since there is no higher peaks than that of Mount Everest, this has no finite dominance. Some sources list as the dominance makeshift circumference of the earth over the poles or - questionable because no standard definition to match - a half times around the world on.

• After the Mount Everest of Aconcagua, the highest mountain in the Americas, the largest domination of all mountain has. Only 16,534 km in distance he is surpassed in height from Tirich Mir in the Hindu Kush.

• The Mont Blanc is the highest mountain in the Alps. The geographically next higher mountains are located in the Caucasus. The Elbrus ( 5633 m) obvious Kjukjurtlju ( 4912 m) is dominance reference for mountain Mont Blanc.