Analysis of Dune Erosion on the Coast of South Baltic Sea Taking into Account Dune Landslide Processes

• Autorzy: Szmytkiewicz P. , Zabuski L.

Identyfikatory

DOI

10.1515/heem-2017-0001

• Języki publikacji: PL

Abstrakty

EN

An analysis was carried out to determine the influence of landslide process at a few meters depth under the dune surface on the rebuilding of the dune. In the first step, calculations were done using the XBEACH model to determine seabed rebuilding as well as shore and dune undercutting for the assumed hydrologic and hydrodynamic conditions. Next, the obtained tachymetric profile of the dune and beach was fed into the FLAC2D program, and calculations of stress distribution, displacements and stability conditions were made. In this way, landslide movement was identified. The theoretical investigations clearly prove that waves attacking the dune not only cause surface erosion, but also trigger a landslide within the dune mass to a maximum depth of about 5 m. It results in a lowering of the dune crown by about 0:6 0:7 m. Numerical models such as XBEACH, SBEACH or CSHORE do not take into account landslide occurrence, and thus underestimate dune erosion.

Słowa kluczowe

EN

South Baltic coastal zone; dunes; erosion; landslide process

• Wydawca: Institute of Hydro-Engineering of Polish Academy of Sciences
• Czasopismo: Archives of Hydro-Engineering and Environmental Mechanics
• Rocznik: 2017
• Tom: Vol. 64, nr 1
• Strony: 3--15
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Szmytkiewicz P.

• Institute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland

autor

Zabuski L.

• Institute of Hydro-Engineering, Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).