A numerical approach for approximating the historical morphology of wave-dominated coasts—A case study of the Pomeranian Bight, southern Baltic Sea

Deng, Junjie; Zhang, Wenyan; Harff, Jan; Schneider, R.; Dudzińska-Nowak, Joanna; Terefenko, Paweł; Giza, Andrzej; Furmańczyk, Kazimierz

doi:10.1016/j.geomorph.2013.08.023

Cited by 36 publications

(42 citation statements)

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“…The DESM model presented in Deng et al (2014) consists of four parts: the generalized Bruun concept, modelling of coastal retreat, modelling of coastal accretion and the inverse modelling technique adopted in this approach. Here, we recall several key terms used in the DESM model for budgeting the sediment mass volume (Fig.…”

Section: Methodsmentioning

confidence: 99%

“…However, a similar method accounting for a dynamic equilibrium change of coastal profiles to assess the threedimensional coastline responses to sea level rise, and also sediment budget, remains unexplored. A largescale modelling approach (Dynamic Equilibrium Shore Model, DESM) based on the generalized Bruun concept of dynamic equilibrium coastal profile changes has been elaborated by Deng et al (2014) to assess the historical sediment erosion and deposition pattern as well as sediment budget by using the available data sets of relative sea level records, modern DEM and historical coastline changes. By introducing the sediment mass balancing equation and assuming a constant wind-wave induced lateral sediment flux (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…By introducing the sediment mass balancing equation and assuming a constant wind-wave induced lateral sediment flux (i.e. total sediment volume change consisting of subaerial cliff and submarine erosion), the DESM model has a potential to be applied for future projection of coastline changes based on relative sea level rise scenarios (Deng et al 2014). The aim of this paper is to present a method to convert the inverse modelling technique adopted by the DESM model to the forward mode.…”

Section: Introductionmentioning

confidence: 99%

“…This method assumes a linear relationship between the sediment budget, coastline and relative sea level changes. In this study, historical sediment budget is estimated by the DESM model for the time span of ~100 years, using the available data sets of modern DEM, historical coastline changes from AD ~1900 to AD 2000 and the relative sea level records by Deng et al (2014). The idea of this study comes from the Bruun Rule derivation, but differs in the fact that it represents only the first-order approximation of dynamic changes of coastal profiles and its three dimensional feature.…”

Section: Introductionmentioning

confidence: 99%

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A method for assessing the coastline recession due to the sea level rise by assuming stationary wind-wave climate

Deng

Harff

Schimanke

et al. 2015

Oceanological and Hydrobiological Studies

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I n t e r n a t i o n a l J o u r n a l o f O c e a n o g r a p h y a n d H y d r o b i o l o g y AbstractThe method introduced in this study for future projection of coastline changes hits the vital need of communicating the potential climate change impact on the coast in the 21th century. A quantitative method called the Dynamic Equilibrium Shore Model (DESM) has been developed to hindcast historical sediment mass budgets and to reconstruct a paleo Digital Elevation Model (DEM). The forward mode of the DESM model relies on paleo-scenarios reconstructed by the DESM model assuming stationary wind-wave climate. A linear relationship between the sea level, coastline changes and sediment budget is formulated and proven by the least square regression method. In addition to its forward prediction of coastline changes, this linear relationship can also estimate the sediment budget by using the information on the coastline and relative sea level changes. Wind climate change is examined based on regional climate model data. Our projections for the end of the 21 st century suggest that the wind and wave climates in the southern Baltic Sea may not change compared to present conditions and that the investigated coastline along the Pomeranian Bay may retreat from 10 to 100 m depending on the location and on the sea level rise which was assumed to be in the range of 0.12 to 0.24 m.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A method for assessing the coastline recession due to the sea level rise by assuming stationary wind-wave climate

Deng

Harff

Schimanke

et al. 2015

Oceanological and Hydrobiological Studies

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“…Thus, a ''static'' approach gives us comparability with the results of those previous studies, especially since the focus of the paper is on inundation caused by sea level rise and coastal floods. Additionally, there is substantial variation along the Polish coast of erosion and sedimentation rates, and their impact on local morphology is still being investigated (Deng et al 2014;Furmańczyk et al 2014). Furthermore, the aforementioned studies considered (Huizinga 2007) and RWS Rijkswaterstaat (Kok et al 2004) coastal erosion as a much smaller source of losses than inundation of land by sea level rise and, foremost, coastal floods.…”

Section: Uncertaintiesmentioning

confidence: 99%

New estimates of potential impacts of sea level rise and coastal floods in Poland

Paprotny

Terefenko

2016

Nat Hazards

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Polish coastal zone is thought to be one of the most exposed to sea level rise in Europe. With mean sea levels expected to increase between 28 and 98 cm by the end of the century, and storms increasing in severity, accurate estimates of the consequences of those phenomena are needed. Recent advances in quality and availability of spatial data in Poland made possible the reassessment of previous estimates of inundation caused by sea level rise. Up-to-date, detailed information on land use, population and buildings was used here to calculate their exposure to floods at a broad range of scenarios. Inclusion of a highresolution digital elevation model contributed to a further improvement in estimates. The results revealed that even by using a static ''bathtub fill'' approach, the amount of exposed land, population or assets is significantly smaller than indicated in previous assessments. In the perspective of the twenty-first century, direct damages caused by sea level rise will be small and adaptation costs will not be significant. However, the increase in the frequency of storm surges could elevate the risk to the population and economy, but cost-effective flood protection measures would be able to mitigate the risk. The exposure of different kinds of assets and sectors of the economy varies to a large extent, though the structural breakdown of potential losses is remarkably stable between scenarios.

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Storm‐driven bottom sediment transport on a high‐energy narrow shelf (NW Iberia) and development of mud depocenters

et al. 2016

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Bottom sediment transport on the NW Iberian shelf was monitored during a downwelling storm in September 2014. Collected data were analyzed and fed into a 3-D coastal ocean model to understand storm-driven sediment transport on the shelf and its impact on midshelf mud depocenters (MDCs). A significantly enhanced level of bottom sediment resuspension, nearly two orders of magnitude higher than that in the prestorm period, was recorded at the mooring site. Field data analysis reveals that it was induced by a short-lasting strong bottom current in combination with enhanced wave-current interaction. Simulation results indicate that this strong current was part of a coastal jet resulted from downwelling. An across-shelf horizontal density gradient as high as 0.32 g/m 4 occurred at the interface between the downwelling and the bottom waters, forming a remarkable front. Due to buoyancy effect, the downwelling water was mostly confined to the coast with a depth limit of 80 m in the south and 120 m in the north of the region, resulting in a northward-directed coastal jet. Simulation results suggest that during the storm, local near-bottom sediment suspensions with concentrations on the order of 10 kg/m 3 would be triggered by wave-current interaction and flow convergence associated with the front. Direct impact on the development of MDCs by transport and deposition of concentrated sediment suspensions is indicated by model results. The seaward limit of the front coincided with the shoreward edge of the MDC nucleus, suggesting the front as a primary control on the deposition of fine-grained sediment.

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A numerical approach for approximating the historical morphology of wave-dominated coasts—A case study of the Pomeranian Bight, southern Baltic Sea

Cited by 36 publications

References 36 publications

A method for assessing the coastline recession due to the sea level rise by assuming stationary wind-wave climate

A method for assessing the coastline recession due to the sea level rise by assuming stationary wind-wave climate

New estimates of potential impacts of sea level rise and coastal floods in Poland

Storm‐driven bottom sediment transport on a high‐energy narrow shelf (NW Iberia) and development of mud depocenters

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