Climate change related increase of storminess near Hel Peninsula, Gulf of Gdańsk, Poland

Cerkowniak, Grzegorz R.; Ostrowski, Rafał; Szmytkiewicz, Piotr

doi:10.2166/wcc.2014.013

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…this re gion; see Cerkowniak et al, 2014). From this fig ure it can be seen that in the pro file along the de pres sion be tween ridges, at a dis tance of ~4,000 m from the shore, the wave still maintains a height of 4 m, while in the along-ridge axis pro file, the wave has al ready de creased to a height of 3.5 m. This seemingly small dif fer ence in wave height trans lates into sig nif i cant en ergy val ues.…”

Section: Results and Interpretationmentioning

confidence: 93%

New insights into coastal processes in the southern Baltic Sea: relevance to modelling and future scenarios

UŚCINOWICZ,

JEGLIŃSKI,

PĄCZEK

et al. 2024

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Un der stand ing the re la tion ships be tween shore line changes and morpho-geo log i cal fea tures of the sea bed and hy dro dynam ics is im por tant for pre dict ing coastal dy nam ics. The south ern Bal tic bar rier coast is dis tin guished by rhyth mic shore line fea tures of dif fer ent scales, form ing an ero sion-ac cu mu la tion sys tem. In this study we ex plore the re la tion ships be tween shoreface-con nected, obliquely ori ented sand ridges, the dis tri bu tion of wave en ergy, and the im pact of waves on shore line changes. A 28.5 km stretch of the Pol ish coast, up to 2 km off shore, was in ves ti gated us ing a multibeam echosounder, a sub-bot tom profiler, side-scan so nar, and sed i ment cor ing. Anal y ses of dig i tal ter rain mod els, ae rial pho to graphs and maps from the late 19th cen tury show that the bound aries be tween ac cre tion and ero sion zones on the coast have shifted eastwards at a rate of ~10-11 m/year. Hy dro dy namic mod el ing shows that de pres sions be tween the ridges are "en ergy windows" through which higher en ergy waves reach the shore. The asym me try of the ridges and their ori en ta tion rel a tive to the pre vail ing wave di rec tion sug gest that they have been mov ing eastwards. Mea sure ments of the 137 Cs con tent in the sed iment cores show that the thick ness of the dy namic layer ex ceeds 1.5-2.0 m. When large-scale sand ridges mi grate, the "energy win dows" also mi grate with them, as does the en tire ero sion-ac cre tion sys tem. In con clu sion, a new type of al ter nat ing shore dy nam ics has been iden ti fied in the dissipative, multibar south ern Bal tic coastal zone. It is highly likely that the av er age shore line re treat mea sured on the scales of a few cen tu ries and tens of kilo metres may be smaller than we sus pect based on ob ser va tions made in re cent de cades.

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Section: Results and Interpretationmentioning

confidence: 93%

New insights into coastal processes in the southern Baltic Sea: relevance to modelling and future scenarios

UŚCINOWICZ,

JEGLIŃSKI,

PĄCZEK

et al. 2024

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“…A crucial factor influencing morphodynamic pattern is seabed morphology, namely the presence of specific seabed relief along the first 15 km of the open sea coastline of the Hel Peninsula, including long troughs in the form of channels, which, with favorable wind directions aligned with their axes, can allow waves with greater energy to reach the shore compared to adjacent areas [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Spatio-Temporal Morphodynamics of a Nourished Sandy Shore Based on LiDAR Measurements

Harenda,

Dudkowska,

Szmytkiewicz

2024

Water

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Coastal erosion is a pervasive global phenomenon, exemplified by the Hel Peninsula situated in the Gulf of Gdańsk, the southern Baltic Sea. The geological constitution of the Hel Peninsula, characterized by sandy and loosely consolidated material, predisposes its coastal zones to continual morphological changes. The peninsula’s limited width and elevation exacerbate shoreline erosion, particularly during periods of heightened storm activity. This study scrutinizes the effectiveness of coastal nourishment interventions, with a specific focus on segments influenced by the Władysławowo port and the Kuźnica vicinity, over several years. This specific section of the coast serves as a significant case study due to its role as a transit zone for sand transport along the whole peninsula. Protective measures, including shore nourishments and coastal groynes, aim to mitigate erosion impacts. Utilizing Airborne Laser Scanning (ALS) data spanning from 2008 to 2022, erosion dynamics were analyzed. The analysis reveals significant erosion patterns coinciding with the frequency and volume of nourishment material deposition, particularly evident in heavily nourished areas proximate to Władysławowo and Kuźnica. Despite persistent monitoring endeavors, persistent erosive trends pose imminent threats to Kuźnica’s infrastructure, necessitating further research into the efficacy of implemented coastal protection measures.

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“…Low wind conditions are rarely uniform over the entire Baltic Sea. However, as claimed by (Cerkowniak et al 2015), extreme storm impacts on the Baltic shores are due mostly to waves generated by persistent wind fields, which are approximately homogeneous over the entire basin. Therefore, it was assumed that wind was uniform in speed and direction over the entire simulation area (Soomery 2001).…”

Section: Numerical Model Set-upmentioning

confidence: 96%

Case-Study Modelling Analysis of Hydrodynamics in the Nearshore of the Baltic Sea Forced by Extreme Along-shore Wind in the Case of a Cross-shore Obstacle

Sokolov

Chubarenko

2018

Archives of Hydro-Engineering and Environmental Mechanics

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In the current study we use a three-dimensional model with hydrodynamic and spectral wave modules operating in a coupled mode to simulate the response of currents and wind wave fields to winds of 20–25 m/sec offshore of the protective structure of the Saint Petersburg Flood Prevention Facility Complex. The model was calibrated against field data, which allowed us to obtain a tool describing storm situations in the eastern part of the Gulf of Finland with a satisfactory accuracy. The numerical modeling showed that the protective dam did not have a noticeable effect on the levels of stormsurge, significantwave height, or current speed in areas seaward of the dam. The increase in erosion processes on the southern shore of the easternmost part of the Gulf of Finland in recent past has most probably been related to other factors. We found that if a west or south-west wind of at least 25 m/s blows over the Baltic Sea for at least 16 hours, the level of storm surges seaward of the dam may reach 3 or more meters. An artificial strengthening of the coastline and the creation of shore protection structures are recommended.

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Climate change related increase of storminess near Hel Peninsula, Gulf of Gdańsk, Poland

Cited by 9 publications

References 12 publications

New insights into coastal processes in the southern Baltic Sea: relevance to modelling and future scenarios

New insights into coastal processes in the southern Baltic Sea: relevance to modelling and future scenarios

Spatio-Temporal Morphodynamics of a Nourished Sandy Shore Based on LiDAR Measurements

Case-Study Modelling Analysis of Hydrodynamics in the Nearshore of the Baltic Sea Forced by Extreme Along-shore Wind in the Case of a Cross-shore Obstacle

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