Arheisch

As arheisch ( Greek ἀ- a- , un-, not '; ῥεῖν rhein , flow') referred to in the Geosciences rivers , without the surface discharge are.

An arheic river is a river that appears to arise out of nowhere (i.e. has no detectable source flow), seeps into a desert or a salt pan and does not reach an ocean (see, for example, the Wadi Bahr el-Ghazal and Lake Chad ). Occasionally it comes to the surface again in other places and thus continues as an endorheic flow.

Likewise, a lake without an actual inflow and with a dam can result in an arheic basin. The Tana lake in the Ethiopian highlands, which flows into the Blue Nile, is exemplary.

literature

Martin Schwind : General State Geography (= textbook of general geography. Volume 8). De Gruyter, Berlin, New York 1972, p. 183 .

Individual evidence

^ Matthias Schaefer: Dictionary of Ecology. 5th revised and expanded edition. Spektrum Akademischer Verlag, Heidelberg 2012, ISBN 978-3-8274-2561-4 , p. 19 .

[1] Matthias Schaefer: Dictionary of Ecology. 5th revised and expanded edition. Spektrum Akademischer Verlag, Heidelberg 2012, ISBN 978-3-8274-2561-4 , p. 19 .