Bulging slope

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Impact slopes of the Iller near Altusried (left), Gleithang (right)
Schematic representation of an impact slope

The bank of a river on the outside of the curve , which is carried away by the stronger current here, is called an impact slope . The bank on the inside of the curve (in the shadow of the current) is called the sliding slope ; material is deposited here because of the lower flow. The terms are used in connection with the meandering of a river. The loops of a river shift over time as a result of the erosion processes . If a migrating impact slope meets another impact slope at the rear, a circulating mountain is created .

Analogously to this, air currents in mountain valleys are also referred to as impact slopes when a valley wind hits a mountain flank and is deflected by it. This can create an updraft .

An impressive example in Central Europe is the slope of the Inn to the southwest of the Upper Bavarian district town of Mühldorf am Inn . With a height of up to 45 meters, it may also be one of the highest in Europe. The erosion can be observed almost continuously here, as the ice age gravel slope continuously subsides on the constantly growing outer radius of the river. Large Scots pine trees plunge into the river again and again .

Another striking example is the nature reserve of the Mattinger Hänge not far from Regensburg directly on the Danube . Over the past millions of years, very high Jura rocks (more than 50 m high) have formed on the north side, the “outside” of the river, over a stretch of about two kilometers, while the opposite (“inside”) side remains very flat .

Web links

Individual evidence

  1. Geography Lexicon: Mäander ( Memento from September 9, 2016 in the Internet Archive ) on: geodz.com