Hydraulic analysis of causes of washout of Gdynia-Orłowo sea-shore during the flood in the Kacza river estuary

• Autorzy: Szydłowski Michał

Identyfikatory

DOI

10.2478/pomr-2019-0019

• Języki publikacji: EN

Abstrakty

EN

In July 2016 in the Three-city agglomeration a rainfall episode of over a day duration and 150 mm summary rainfall height, occurred. This situation, extreme as for Polish conditions, caused significant freshets in rivers and streams running into Gdansk Bay, the Baltic Sea, and serving as collectors of rainfall waters for the sea-coast towns. In many areas of the Three-city flood phenomena and overflows took place. The flood also occurred in the catchment area of the Kacza river in Gdynia. The passing of flood water rise caused damage of many infrastructure objects located along the river valley. The estuary section of the river suffered most, especially sea-shore belt together with beach around the estuary which were significantly washed out. In this paper an approach was made to answer to the question on direct causes of the situation which occurred at the estuary of the Kacza river. To this end, there was worked out a hydrodynamic model of the considered section of the river, based on the solving of two-dimensional differential motion equations of free-surface liquid, and simulations of water flow propagation along the river’s valley were performed for a few variants of hydraulic engineering infrastructure of river bed. Numerical hydraulic analysis made it possible to determine a role of the hydraulic engineering objects in forming the flood water rise as well as their impact on location and range of washout zones of sea-shore belt.

Słowa kluczowe

EN

hydrodynamics; flood; erosion of the coastal zone; Kacza river; Gdynia

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2019
• Tom: nr 1
• Strony: 174--182
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Szydłowski Michał

• Gdańsk University of Technology Faculty of Civil and Environmental Engineering 11/12 Narutowicza St. 80 - 233 Gdańsk Poland

Bibliografia

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• 7. Weinerowska-Bords K., Szydłowski M, Bielecka K. : Analysis of temporal and spatial variability of precipitation in the Strzyza catchment in Gdańsk, Inżynieria Morska i Geotechnika, 6. , 2012
• 8. Weinerowska-Bords K. : Development of Local IDF-formula Using Controlled Random Search Method for Global Optimization. Acta Geophysica, 63(1), 2014, pp. 232-274.
• 9. Widerski T., Szydłowski M., Szpakowski W. : Measurement and analysis of a flood wave propagation on the Kacza River in Gdynia in Northern Poland. 17th International Multidisciplinary Scientific GeoConference SGEM2017, Water Resources. Forest, Marine and Ocean Ecosystems, 2017, pp. 453-460.
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).