Embankment
Embankments on rivers are also called embankments or natural river dams . They are also found on very flat seashores, there also called ridge ridges because of their greater width . They are located in areas that are just about to be flooded during high water. Since the currents are slower here than in areas of deeper water, suspended matter brought in by the flood settles here. Areas further away from the body of water receive little or no deposits and are therefore ultimately deeper.
On rivers, the bank wall can begin right on the bank line of medium water flow, with coarser-grained sediments being deposited closer to the river bed than finer-grained ones. If the alluvial surface of the embankments is accompanied by significant sedimentation in the river bed itself, a dam river is created .
On the flat tidal coasts of the German Bight , before the era of the dyke construction, bank ridges formed at a distance of one kilometer or more from the bank, in a belt that was only washed over by storm surges , but not by the daily tides. Because of the slightly higher and firmer ground the first settlements of today were on shore back marshes created. However, due to their geological formation, they only offered flood protection in phases of falling sea levels. The formation of bank ridges hindered the outflow of surface water from the inland; the waterlogging led to its bog .
After the construction of large sea dikes, polder steps were created in the same way as before the ridges, which means that areas diked early are now lower than diked areas later, on which the sea has washed up more sediment.
swell
- ↑ www.geodz.com: Uferwall
- ↑ Robert Morgan, Language for American Landscape : Natural levee ( Memento of the original from July 15, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ Frank Ahnert, Introduction to Geomorphology , 1996, 2009, ISBN 978-3-8252-8103-8 , 13.6): Valley floors, river dams and floodplains
-
↑ a b Karl-Ernst Behre, The history of the landscape around the Jade Bay , 2012, ISBN 978-3-941929-02-9 ,
• p. 25, Early settlements in the Jade region ,
• p. 139, Large areas around the Jade Bay
