Abstract
Studies of the Nile Delta coast have indicated wide values of local subsidence, ranging from 0.4 to 5 mm/yr. Trend analysis of sea-level rise and shoreline retreat at two Nile Delta promontories have been studied. Records from tide gauges at Alexandria (1944–1989) and Port Said (1926–1987), north of the Nile delta coast, indicate a submergence of the land and/or a rise of the sea-level of 2 and 2.4 mm/yr, respectively.
Dramatic erosion has occurred on some beaches of the Nile Delta. This is greatest at the tips of the Rosetta and Damietta promontories, with shoreline retreat up to 58 m/yr. Relationship between the shoreline retreat and sea level trends in terms of correlation analysis and application of the Bruun Rule indicates that the sea level rise has, by itself, a relatively minor effect on coastal erosion. The sea-level trend at the Nile delta coast is found to be only one of several effects on shoreline retreat. Major recent effects include a combination of cut-off of sediment supply to the coast by damming the River Nile and local hydrodynamic forces of waves and currents. Estimates of local future sea-level rise by the year 2100 at Alexandria and Port Said, respectively, is expected to be 37.9 and 44.2 cm. These expectations, combined with other factors, could accelerate coastal erosion, inundate wetlands and lowlands, and increase the salinity of lakes and aquifers.
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References
Abu-Zeid, M. and Stanley, D. J.: 1990, Temporal and spatial distribution of clay minerals in Late Quaternary deposits of the Nile Delta, J. Coastal Res. 6, 677–698.
Barnett, T. P.: 1984, The estimation of ‘global’ sea level change: a problem of uniqueness, J. Geophys. Res. 89, 7980–7988.
Breccia, A.: 1922, Alexandriea ad Aegyptum, Municipalité d'Alexandrie, Instituto Italiano d'Arti grafiche, Bergamo.
Bruun, P.: 1962, Sea level rise as a cause of shore erosion, Proc. Am. Soc. Civ. Eng., J. Water. Harbors Div. 88, 117–130.
Coutellier, V. and Stanley, D. J.: 1987, Late Quaternary stratigraphy and paleogeography of the eastern Nile delta, Egypt, Marine Geol. 77, 257–275.
Daressy, M. G.: 1928, Les branches du Nil sous la XVIII Dynastie, Bulletin de la Société Royale de Géographie d'Egypt 16, 293–329.
El Askary, M. A. and Frihy, O. E.: 1986, Depositional phases of Rosetta and Damietta promontories on the Nile delta coast, J. African Earth Sci. 5, 627–633.
El Din, S. H.: 1975, Variation of sea level on the Egyptian Mediterranean and Red Sea coasts, Internat. Hydrogr. Rev. 22, 63–73.
El-Fishawi, N. M. and Badr, A. A.: 1989, Volumetric changes of nearshore sediments between Rosetta and Damietta, Egypt, INQUA, Comm. Quat. Shoreline Newsl. 11, 39–42.
El-Fishawi, N. M. and Fanos, A. M.: 1989, Prediction of sea level rise by 2100, Nile delta coast, INQUA, Comm. Quat. Shoreline Newsl. 11, 43–47.
El Sayed, M. Kh.: 1988, Sea level rise in Alexandria during the late Holocene: Archaeological evidence, Rapp. Comm. Int. mer. Medit.
Elwany, M. H., Khafagy, A. A., Inman, D. L., and Fanos, A. M.: 1988, Analysis of waves from arrays at Abu Quir and Ras El Bar, Egypt, Adv. Underwater Technol. Ocean Offshore Engng. 16, 89–97.
Emergy, K. O.: 1980, Relative sea levels from tide-gauge records, Proc. Nat. Acad. Sci. U.S.A. 77, 6968–6972.
Emery, K. O., Aubrey, D. G., and Goldsmith, V.: 1988, Coastal neotectonics of the Mediterranean from tide-gauge records. Marine Geol. 81, 41–52.
Frihy, O. E.: 1988, Nile delta shoreline changes: Aerial photographic study of a 28-year period, J. Coastal Res. 4, 597–606.
Frihy, O. E. and Khafagy, A. A.: 1991, Climate and human induced changes in relation to shoreline migration trends at the Nile delta promontories, Egypt, CATENA, an Interdisciplinary Journal of Pedology, Hydrology and Geomorphology, West Germany, 18, 197–211.
Frihy, O. E., Nasr, S. M., Ahmed M. H., and El Raey, M.: 1991, Temporal shoreline and bottom changes of the inner continental shelf off the Nile Delta, Egypt, J. Coastal Res. 7, 465–475.
Goby, J. E.: 1952, Histoire des nivellement de l'Isthme de Suez, Bull. Soc. Etudes Hist. Geogr. de l'Isthme du Suez 5, 23–43.
Goldsmith, V. and Gilboa, M.: 1987, Mediterranean sea level changes from tide gauges, Proc. Int. Conf. Coastal Engng, 20, Taipei, Taiwan, Nov. 1985. Amer. Soc. Civ. Engng.
Gornitz, V., Lebedeff, S., and Hansen, J.: 1982, Global sea level trend in the past century, Science 215, 1611–1614.
Hallermeier, R. J.: 1981, A profile zonation for seasonal sand beaches from wave climate, Coastal Engng. 4, 253–277.
Hamed, A. A. and El Gindy, A. A.: 1988, Storm surge generation by winter cyclones at Alexandria, Egypt, Internat. Hydrography. Rev. Monaco, 36, 129–139.
Ibrahim, M. M.: 1963, The last subsidence movement of land on the Mediterranean coast (unpublished report), Mineral wealth and ground water, Ministry of Scientific Research, Egypt.
Inman, D. L., and Jenkins, S. A.: 1984, The Nile littoral cell and man's impact on the coastal zone of the southeastern Mediterranean, Scripps Institute of Oceanography Ref. Series 84–31, University of California, La Jolla.
Klemas, V. and Abdel Kader, A. M.: 1982, Remote sensing of coastal processes with emphasis on the Nile delta, in Internat. Sympos. Remote Sensing of Environments, Cairo.
Manohar, M.: 1976, Beach profiles, Proc. UNESCO Seminar on Nile Delta Sedimentology, Alexandria, pp. 95–99.
Manohar, M.: 1981, Coastal processes at the Nile delta coast, Shore and Beach 49, 8–15.
Milliman, J. D., Broadus, J. M., and Gable, F.: 1989, Environmental and economic implications of rising sea level and subsiding deltas: The Nile and Bengal examples, AMBIO 18, 340–345.
Misdorp, R. and Sestini, G.: 1976, Notes on sediments map of the Endeavour survey of 1919–1922, Proc. UNESCO Seminar on Nile Delta Sedimentology, Alexandria, pp. 191–204.
Misdorp, R.: 1977, The Nile promontories and the Nile continental shelf, Proc. UNESCO Seminar on Nile Delta Coastal Processes, Alexandria, pp. 456–551.
Neev, D., Greenfield, L., and Hall, J. K.: 1985, Slice tectonics in the Eastern Mediterranean Basin, in D. J. Stanley and F. C. Wezel (eds), Geological Evolution of the Mediterranean Basin, Springer-Verlag, New York, pp. 249–269.
Rady, A. A.: 1979, Variation of sea level at Alexandria and its relation to the meteorologic conditions, MSc thesis, Alexandria University.
Said, R.: 1981, The Geological Evolution of the River Nile, Springer-Verlag, New York.
Sestini, G.: 1976, Geomorphology of the Nile Delta, Proc. UNESCO Seminar on Nile Delta Sedimentology, Alexandria, pp, 12–24.
Sestini, G.: 1989, Nile Delta depositional environments and geological history, in K. G. Whateley and K. T. Pickering (eds) Deltas: Sites and Traps for Fossil Fuels, Blackwell Scientific Publications, Geol. Soc. London Spec. Publ. 41, pp. 99–127.
Smith, E. S. and Abdel Kader, A.: 1988, Coastal erosion along the Egyptian Delta, J. of Coastal Res. 4, 245–255.
Stanley, D. J.: 1988, Subsidence in the northeastern Nile delta: rapid rates, possible causes, and consequences, Science 240, 497–500.
Stanley, D. J.: 1990, Recent subsidence and northeast tilting of the Nile Delta, Egypt, Marine Geol. 94, 147–154.
Striem, H. L. and Rosenan, N.: 1972, Seasonal fluctuations of monthly mean sea level on the coast of the Eastern Mediterranean, Int. Hydrol. Rev., 2, 129–136.
Toussoun, O.: 1934, Les ruines sous-marines de la Baie d'Abuquir, Bulletin de la Société Royale d'Archéologie (Alexandria) 29, 342–354.
UNDP/UNESCO: 1976, Proc. Seminar on Nile Delta Sedimentology, Acad. Sci. Res., Alexandria.
UNDP/UNESCO: 1978, Coastal protection studies. Final technical report, Paris, 1.
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Frihy, O.E. Sea-level rise and shoreline retreat of the Nile Delta promontories, Egypt. Nat Hazards 5, 65–81 (1992). https://doi.org/10.1007/BF00127140
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DOI: https://doi.org/10.1007/BF00127140