Effects of Climate and Human Interventions on the Evolution of the Wadden Sea Depositional System (Southern North Sea)

  • Burghard W. Flemming
Chapter

Abstract

The most important constraints on barrier island genesis are a low coastal gradient, a low to moderate wave climate, low to intermediate tidal ranges, and a sufficient supply of sediment to construct and maintain the barrier and its shoreface. Sediment sources can be remote (river, updrift coast), local (upper shoreface) or a combination of both. With the exception of tidal range, the constraining factors are directly or indirectly controlled by climatic factors. Wave height and tidal range are loosely correlated and define the lower and the upper limits of barrier island stability within the mixed tide/wave energy zones. Since sea-level rise creates a sediment deficit in the tidal basin, the sediment budget ultimately controls the morphodynamic response and the resulting stratigraphy: progradational (remote supply > deficit), aggradational (remote supply = deficit), or transgressive (remote supply <-<< deficit). In the case of the southern North Sea, the western section from Den Helder (Netherlands) to the mouth of the Elbe river (Germany) the system is transgressive. From the Elbe river to St. Peter-Ording (Germany) the tidal flat system is aggradationalprogradational. From St. Peter-Ording to the island of Sylt the tidal basins, which were originally created by coastal erosion (storm scouring) during the late Middel Ages, are aggradationalprogradational. The island of Sylt itself is strongly transgressive. From Sylt to Skallingen (Denmark) the barrier system is again aggradational-progradational. Morphodynamic changes recorded in historical times (since about AD 1000) mostly reflect responses to human interventions in the western sector of the Wadden Sea (Den Helder to the Elbe river), whereas north of the Elbe river they are dominated by natural adjustment processes (erosion/accretion) which, in most places, incorporate a variable anthropogenic overprint. In the wake of a potentially accelerating sea-level rise, it is predicted that shore protection schemes will increasingly inhibit natural island dynamics and thereby threaten island stability, while storm-barriers will eventually have to be constructed in the lower reaches of all major rivers along the coast. In addition, the depletion of fine-grained sediments will continue, the system becoming increasingly more sand dominated and experiencing a further loss of mud flats and salt marshes.

Keywords

Migration Europe Sedimentation Beach Petrol 

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References

  1. Aagaard T, Nielsen N, Nielsen J (1995) Skallingen — origin and evolution of a barrier spit. Medd Skalling Lab XXXV, pp 1–85Google Scholar
  2. Bartholdy J, Pejrup M (1994) Holocene evolution of the Danish Wadden Sea. In: Flemming BW and Hertweck G (eds). Tidal Flats and Barrier Systems of Continental Europe: A Selected Overview. Senckenbergiana marit 24:187–209Google Scholar
  3. Beets DJ, Van der Valk L, Stive MJF (1992) HoloceneGoogle Scholar
  4. evolution of the coast of Holland. Mar Geol 103:423–443Google Scholar
  5. Davies JL (1964) A morphogenetic approach to world shorelines. Zeitschrift für Geomorphologie 8:127–142Google Scholar
  6. Davis RA Jr (1994) Barrier island systems — geologic overview. In: Davis RA Jr (ed). Geology of Holocene Barrier Island Systems. Springer, Berlin, pp 1–46CrossRefGoogle Scholar
  7. Dijkema KS, Reineck H-E, Wolff WJ (eds) (1980) Geomorphology of the Wadden Sea area. Balkema, Rotterdam, pp 1–135Google Scholar
  8. Ehlers, J (1988) The Morphodynamics of the Wadden Sea. Balkema, Rotterdam, pp 1–397Google Scholar
  9. Fisher JJ (1968) Barrier island formation: discussion. Geol Soc Am Bull 79:1421–1426CrossRefGoogle Scholar
  10. Flemming BW, Hertweck G (eds) (1994) Tidal Flats and Barrier systems of Continental Europe: a Selected Overview. Senckenbergiana marit 24, pp 1–209Google Scholar
  11. Flemming BW, Davis RA Jr (1994) Holocene evolution, morphodynamics and sedimentology of the Spiekeroog barrier Island system (southern North Sea). In: Flemming BW, Hertweck G (eds) Tidal Flats and Barrier systems of Continental Europe: a Selected Overview. Senckenbergiana marit 24:117–155Google Scholar
  12. Flemming BW, Bartholomä A (1997) Response of the Wadden Sea to a rising sea level: a predictive empirical model. Ger J Hydrogr 49:343–353CrossRefGoogle Scholar
  13. Glaeser JD (1978) Global distribution ofbarrier islands in terms of tectonic setting. J Geol 86: 283–297CrossRefGoogle Scholar
  14. Hayes MO (1979) Barrier island morphology as a function of tidal and wave regime. In: Leatherman SP (ed). Barrier Islands from the Gulf of St. Lawrence to the Gulf of Mexico. Academic Press, New York, pp 1–27Google Scholar
  15. Hanisch J (1980) Neue Meeresspiegeldaten aus dem Raum Wangerooge. Eiszeitalter und Gegenwart 30:221–228Google Scholar
  16. Hoselmann C, Streif H (1997) Bilanzierung der holozänen Sedimentakkumulation im niedersächsischen Küstenraum. Zeitschr DGG 148:431–445Google Scholar
  17. Hoyt JH (1967) Barrier island formation. Geol Soc Am Bull 78:1125–1136CrossRefGoogle Scholar
  18. King CAM (1959) Beaches and Coasts. Edward Arnold, London, pp 1–403Google Scholar
  19. Kosters EC, Van Mierlo BEJM, Verbeek NH, Posthumus BJ, McGee TM, Brouwer J (1992) Late Quaternary stratigraphic signature, offshore from the Dutch barrier shoreline. Sed Geol 80:199–212CrossRefGoogle Scholar
  20. Kraft JC, John CJ (1979) Lateral and vertical facies relations of transgressive barrier. AAPG Bull 63:2145–2163Google Scholar
  21. Krögel F, Flemming BW (1998) Evidence for temperature-adjusted sediment distributions in the backbarrier tidal flats of the East Frisian Wadden Sea (southern North Sea). In: Alexander CR, Davis RA, Henry VJ (eds) Tidalites: Processes and Products. SEPM Spec Publ 61:31–41Google Scholar
  22. O’Brien MP (1931) Estuary tidal prism related to entrance area. Trans Am Soc Civil Eng 1: 38–739Google Scholar
  23. Oost AP (1995) Dynamics and sedimentary development of the Dutch Wadden Sea with emphasis on the Frisian Inlet. A study of barrier islands, ebb-tidal deltas, inlets and drainage basins. PhD Thesis, University of Utrecht, Geologica Ultraiectina 126, pp 1–400Google Scholar
  24. Schwartz ML (1971) The multiple causality of barrier islands. J Geol 79:91–94CrossRefGoogle Scholar
  25. Schwartz ML (ed) (1973) Barrier Islands. Benchmark Papers in Geology 9. Dowden, Hutchinson & Ross, Stroudsburg, pp 1–451Google Scholar
  26. Sha LP, De Boer PL (1991) Ebb-tidal delta deposits along the west Frisian Islands (the Netherlands): processes, facies architecture and preservation. In: Smith DG, Reinson GE, Zaitlin BA, Rahmani RA (eds) Clastic Tidal Sedimentation. Can Soc PetrolGoogle Scholar
  27. Geol Mem 16:199–218Google Scholar
  28. Shepard FP (1963) Submarine Geology. Harper & Row, New York, pp 1–557Google Scholar
  29. Streif H (1990) Das Ostfriesische Küstengebiet. Nordsee, Inseln, Watten und Marschen. Sammlung geologischer Führer 57. Gebr. Borntraeger, Stuttgart, pp 1–376Google Scholar
  30. Van der Spek AJF (1995) Reconstruction of tidal inlet and channel dimensions in the frisian Middelzee, a former tidal basin in the Dutch Wadden Sea. In: Flemming BW, Bartholomä A (eds) Tidal Signatures in Modern and Ancient Sediments. Blackwell Science, Oxford. IAS Spec Publ 24, pp 239–258Google Scholar
  31. Vos PC, Van Kesteren W (2000) The long-term evolution of intertidal mudflats in the northern Netherlands during the Holocene: natural and anthropogenic processes. Continental Shelf Research 20:1687–1710CrossRefGoogle Scholar
  32. Zagwijn WH (1986) Nederland in het Holoceen. Rijks Geol Dienst, Haarlem, pp 1–46Google Scholar
  33. Zenkovich VP (1967) Processes of Coastal Development. Oliver & Boyd, Edinburgh, pp 1–738Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2002

Authors and Affiliations

  • Burghard W. Flemming
    • 1
  1. 1.Senckenberg InstituteWilhelmshavenGermany

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