Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast
Accelerated sea level rise (SLR) is predicted to have multiple adverse impacts on the coastal zone, aggravating phenomena such as coastal erosion on sandy coasts. For climate change adaptation planning and informing policy, morphodynamic changes occurring at coastlines are becoming increasingly impo...
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fttudelft:oai:tudelft.nl:uuid:4d69f8c5-1481-4292-94f1-1bffe792ebc9 2023-07-30T03:58:30+02:00 Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast Lambert, Ingrid (author) Aarninkhof, S.G.J. (mentor) Luijendijk, A.P. (mentor) de Winter, Renske (mentor) Storms, J.E.A. (mentor) Delft University of Technology (degree granting institution) 52.018516, 4.148583 2019-07-18 http://resolver.tudelft.nl/uuid:4d69f8c5-1481-4292-94f1-1bffe792ebc9 en eng http://resolver.tudelft.nl/uuid:4d69f8c5-1481-4292-94f1-1bffe792ebc9 © 2019 Ingrid Lambert Sea level rise Sandy coasts Morphodynamics Delft3D Coastal erosion Process-based modelling Climate change Sediment transport master thesis 2019 fttudelft 2023-07-08T20:30:19Z Accelerated sea level rise (SLR) is predicted to have multiple adverse impacts on the coastal zone, aggravating phenomena such as coastal erosion on sandy coasts. For climate change adaptation planning and informing policy, morphodynamic changes occurring at coastlines are becoming increasingly important. In this study, a calibrated Delft3D model forced by real-time wave conditions, was applied to simulate and assess the morphological behaviour of the Delfland coast in response to accelerated SLR over a 30-year time period. The calibrated Delft3D model uses a novel acceleration technique called brute-force merged (BFM) proposed by Luijendijk et al. (2019), which enables the modelling of multi-decadal predictions, with significant gain in computational effort. An assumption of the study was that no nourishments take place, i.e. no additional sediment supply. The Sand Engine (Zand Motor in Dutch), currently located along this coast was also excluded from the model, thereby assuming a straight unnourished coastline. A selection of six SLR scenarios was simulated, including a no SLR scenario used as the reference case. The chosen scenarios covered the full bandwidth of accelerated SLR projections translated for the Dutch coast up to 2100, assuming increased mass loss from the Antarctic ice sheet, a hypothesis proposed by DeConto and Pollard (2016). These projections therefore exceed those presented in the IPCC AR5. Based on the recent literature, the SLR rates selected, ranging from 3 mm/year to 120 mm/year, are assumed plausible and useful for the modelling study. Model outputs that are assessed include erosion and sedimentation plots, and volume changes, particularly erosion volumes. Analysis shows that no major change to the general coastal system behaviour occurs due to accelerated SLR; erosive sections in the south remain erosive and accretive regions in the northern part remain accretive. This is influenced mainly by gradients in alongshore sediment transport and presence of structures. Erosion volumes ... Master Thesis Antarc* Antarctic Ice Sheet Delft University of Technology: Institutional Repository Antarctic Pollard ENVELOPE(64.617,64.617,-70.467,-70.467) The Antarctic |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
Sea level rise Sandy coasts Morphodynamics Delft3D Coastal erosion Process-based modelling Climate change Sediment transport |
spellingShingle |
Sea level rise Sandy coasts Morphodynamics Delft3D Coastal erosion Process-based modelling Climate change Sediment transport Lambert, Ingrid (author) Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast |
topic_facet |
Sea level rise Sandy coasts Morphodynamics Delft3D Coastal erosion Process-based modelling Climate change Sediment transport |
description |
Accelerated sea level rise (SLR) is predicted to have multiple adverse impacts on the coastal zone, aggravating phenomena such as coastal erosion on sandy coasts. For climate change adaptation planning and informing policy, morphodynamic changes occurring at coastlines are becoming increasingly important. In this study, a calibrated Delft3D model forced by real-time wave conditions, was applied to simulate and assess the morphological behaviour of the Delfland coast in response to accelerated SLR over a 30-year time period. The calibrated Delft3D model uses a novel acceleration technique called brute-force merged (BFM) proposed by Luijendijk et al. (2019), which enables the modelling of multi-decadal predictions, with significant gain in computational effort. An assumption of the study was that no nourishments take place, i.e. no additional sediment supply. The Sand Engine (Zand Motor in Dutch), currently located along this coast was also excluded from the model, thereby assuming a straight unnourished coastline. A selection of six SLR scenarios was simulated, including a no SLR scenario used as the reference case. The chosen scenarios covered the full bandwidth of accelerated SLR projections translated for the Dutch coast up to 2100, assuming increased mass loss from the Antarctic ice sheet, a hypothesis proposed by DeConto and Pollard (2016). These projections therefore exceed those presented in the IPCC AR5. Based on the recent literature, the SLR rates selected, ranging from 3 mm/year to 120 mm/year, are assumed plausible and useful for the modelling study. Model outputs that are assessed include erosion and sedimentation plots, and volume changes, particularly erosion volumes. Analysis shows that no major change to the general coastal system behaviour occurs due to accelerated SLR; erosive sections in the south remain erosive and accretive regions in the northern part remain accretive. This is influenced mainly by gradients in alongshore sediment transport and presence of structures. Erosion volumes ... |
author2 |
Aarninkhof, S.G.J. (mentor) Luijendijk, A.P. (mentor) de Winter, Renske (mentor) Storms, J.E.A. (mentor) Delft University of Technology (degree granting institution) |
format |
Master Thesis |
author |
Lambert, Ingrid (author) |
author_facet |
Lambert, Ingrid (author) |
author_sort |
Lambert, Ingrid (author) |
title |
Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast |
title_short |
Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast |
title_full |
Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast |
title_fullStr |
Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast |
title_full_unstemmed |
Morphological Response of the Dutch Sandy Coast to Accelerated Sea Level Rise: A process-based modelling approach using Delft3D, applied to the Delfland coast |
title_sort |
morphological response of the dutch sandy coast to accelerated sea level rise: a process-based modelling approach using delft3d, applied to the delfland coast |
publishDate |
2019 |
url |
http://resolver.tudelft.nl/uuid:4d69f8c5-1481-4292-94f1-1bffe792ebc9 |
op_coverage |
52.018516, 4.148583 |
long_lat |
ENVELOPE(64.617,64.617,-70.467,-70.467) |
geographic |
Antarctic Pollard The Antarctic |
geographic_facet |
Antarctic Pollard The Antarctic |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
http://resolver.tudelft.nl/uuid:4d69f8c5-1481-4292-94f1-1bffe792ebc9 |
op_rights |
© 2019 Ingrid Lambert |
_version_ |
1772821288114454528 |