Accelerated recession of a desert cliff due to sewage water disposal, Sede Boqer, Israel
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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
KeywordsConglomerate Friction Angle Chalk Phosphorite Sepiolite
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- Arkin, Y., 1984, The geological map of Israel on a scale of 1∶50,000, Sede Boqer, Sheet IV. Prelim. edition, Israel Geol. Surv.Google Scholar
- Arkin, Y., Y. Nathan, and A. Starinsky, 1972, Paleocene-early Eocene environments of deposition in the Northern Negev (Southern Israel): Israel Geol. Surv. Bull. no. 56, p. 18Google Scholar
- Arkin, Y., and A. Zur, 1980, Progressive circular slide due to sewage water discharge. An example of induced instability in arid regions: Conf. on Min. Engin., December 1980, Qiryat Anavim.Google Scholar
- Issar, A., A. Karnieli, H. J. Bruins, and I. Gilead, 1984, The Quaternary geology and hydrology of Sede-Zin, Negev, Israel: Israel Journal of Earth Sciences, v. 33, no. 5, 12. p. 34–42.Google Scholar
- Kirkby, M. J., ed. 1980, Hillslope hydrology: New York, Wiley-Interscience Publications, p. 398.Google Scholar
- Marks, A. E., 1976, Prehistory and palaeo-environments in the Central Negev, Israel, v. 1: Pallas, SMV Press.Google Scholar
- Picard, L., 1951, Geomorphogeny of Israel, part 1: the Negev: Jerusalem, Research Council of Israel Bulletin, v. 1, no. 1/2, p. 5–32.Google Scholar
- Yair, A., H. Lavee, R. B. Bryan, and E. Adar, 1980, Runoff and erosion processes and rates in the Zin valley badlands, northern Negev, Israel. Earth Surface Processes, v. 5, p. 205–225.Google Scholar
- Yair, A., P. Goldberg, and B. Brimer, 1982, Long-term denudation rates in the Zin-Havarim badlands, southern Negev, Israel,in Bryan, R. P. and A. Yair, Badland geomorphology and piping: England, Geo. Abstracts Limited.Google Scholar