Accelerated recession of a desert cliff due to sewage water disposal,Sede Boqer,Israel |
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| Authors: | Arkin Yaacov Karnieli Arnon Issar Arie Mtz-Esparza Javier Diaz |
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| Institution: | (1) The Jacob Blaustein Institute for Desert Research, Israel;(2) Polytechnic University of Madrid, Spain;(3) Israel Geological Survey, 30 Malkhe Yisrael Street, 95 501 Jerusalem, Israel |
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| Abstract: | Accelerated erosion of a desert cliff due to uncontrolled sewage water disposal was investigated at the Sede Boqer Campus
in the Negev, Israel An erosional cirque formed by this water was studied as a model simulating natural processes. The cliffs
consist of loess and conglomerate underlain by soft marl, clay, and chalk.
The rate of erosion is of the order of 5%–8% of the volume of water discharged. The rate of incision ranges from 10 2 to 13.3
m/yr and is several orders higher than that expected under normal rainfall conditions
The introduction of this new hydrological factor resulted in a severe disturbance of the morphological balance in the vicinity
of the cliffs, accelerated erosion, and generated circular slides |
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