SPATIOTEMPORAL ANALYSIS OF VARIATIONS OF CERTAIN MORPHOLOGICAL BEACH FORMS

Zbigniew Pruszak, Jan Schönhofer, Grzegorz Różyński

Abstract


The study is focused on spatiotemporal shoreline variability at a beach with a wide surf zone featuring 3-5 bars based on field observations done between 1983-2008 in the south Baltic Sea. The implementation of various analyses from simple geometry, through spectral analysis up to Discrete Wavelet Transform (DWT) allowed for a synergistic description of simultaneous shoreline and dune foot variability in space and time. The results include meso-scale and long-term phenomena with time scales from several months to many years and spatial scales ranking between a few hundred meters up to several kilometers.

Keywords


shoreline; dune foot; non-tidal sea; Baltic Sea; wavelet transform

References


Kumar, P. and Foufoula-Georgiou, E. 1997. Wavelet analysis for geophysical applications. Reviews of Geophysics, 35, 4, Nov. 1997, 385-412.

Mallat, S. 1989. A theory for multi-resolution signal decomposition: The wavelet representation. IEEE Trans. Pattern Anal. Mach. Intel., 11(7), 674-693.http://dx.doi.org/10.1109/34.192463

Pruszak, Z., RóŜyński, G. and Zeidler, R. 1997. Statistical proporties of bars of multi-bar profiles. J. Coastal Engineering, Elsevier Science Publishers, 1997, No 31, 263-280.

Pruszak Z. and G. RóŜyński. 1998. Variability of Multibar Profiles in Terms of Random Sine Functions, J. Waterway, Port, Coastal and Ocean Engineering, ASCE, Vol. 124, No. 2, 48-56.

Pruszak Z., RóŜyński G., Szmytkiewicz M. and Skaja M. 2007. Field observation of edge waves and beach cusps on the South Baltic Sea Coast, Journal of Coastal Research, Vol. 23, No 4, 846-860.http://dx.doi.org/10.2112/04-0293.1

Pruszak Z., Schonhofer J. and Skaja M. 2008a. Variability of shoreline and dune on South Baltic coast, Proceedings of the 9th International Conference LITTORAL2008, November 25-28 Venice, 67,1-9.

Pruszak Z., RóŜyński G. and Szmytkiewicz P. 2008b. Megascale rhythmic shoreline forms at a beach with multiple bars, Oceanologia, 50 (2), 183-203.

Pruszak Z., Szmytkiewicz P, Ostrowski R., Z., Skaja M. and Szmytkiewicz M. 2008c. Shallow-water wave energy dissipation in a multi-bar coastal zone, Oceanologia, 50 (1), 43-58.

Pruszak Z., Ostrowski R., Szmytkiewicz P. and Schönhofer J. 2009. Field studies on wave-induced shallow water morphological features, Proceedings of 31rd International Conference on Coastal Engineering, Hamburg, August/September 2008.

RóŜyński, G. 2005. Long term shoreline response of a non-tidal, barred coast, Coastal Engineering, 52, 79-91.http://dx.doi.org/10.1016/j.coastaleng.2004.09.007


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