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MODELING COASTAL WATER TABLE FLUCTUATIONS USING PFLOTRAN 利用pflotran模拟沿海地下水位波动
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.management.88
Margit Maple, Maia Coylar, Russell Detwiler, Timu Gallien
{"title":"MODELING COASTAL WATER TABLE FLUCTUATIONS USING PFLOTRAN","authors":"Margit Maple, Maia Coylar, Russell Detwiler, Timu Gallien","doi":"10.9753/icce.v37.management.88","DOIUrl":"https://doi.org/10.9753/icce.v37.management.88","url":null,"abstract":"Coastal aquifers are highly dynamic groundwater systems. Sea level rise will cause a rise in coastal groundwater tables resulting in increased risk of shallow or emergent groundwater (Befus et al., 2020). Marine water level fluctuations cause the beach groundwater table to oscillate over a relatively large range. Understanding these oscillations is crucial, as shallow (i.e., high) water tables may impact subsurface infrastructure, mobilize sediment, and increase liquefaction risks. Although the impacts of tides and wave setup on coastal water tables have been studied (e.g., Nielsen, 1990; Housego et al, 2021), the cumulative impacts of wave runup, partially saturated flow, complex beach topography, and dual tidal forcing for bay-backed regions have not been explored. This work numerically models beach water table fluctuations which are compared to in-situ swash and beach groundwater observations at Cardiff State Beach in Encinitas, CA.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DIRECT HAZARD FROM WAVE OVERTOPPING: A REVIEW AND FORWARD LOOK 浪涌的直接危害:回顾与展望
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.structures.82
Tom Bruce, Jentsje van der Meer, William Allsop
{"title":"DIRECT HAZARD FROM WAVE OVERTOPPING: A REVIEW AND FORWARD LOOK","authors":"Tom Bruce, Jentsje van der Meer, William Allsop","doi":"10.9753/icce.v37.structures.82","DOIUrl":"https://doi.org/10.9753/icce.v37.structures.82","url":null,"abstract":"A primary purpose of many coastal defences is to protect people from direct hazard due to wave overtopping. This is reflected by the use of an admissible overtopping as a key parameter in design or assessment of structures. Despite this long-established design driver, it is less than 20 years since guidance on admissible overtopping started to move from being based simply upon mean discharge to consider the volumes associated with individual wave overtopping events. Only in the past five years or so has attention zoomed in further, to associate the influences of direct hazard on the actual flow parameters (typically water depth and speed at the pedestrian). This paper will provide a developed view of the current state of the art and improved guidance, and the research from which it has emerged.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
INVESTIGATING DEBRIS TRANSPORT DURING EXTREME COASTAL EVENTS 调查极端海岸事件期间的碎片运输
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.structures.101
Gizem Ezgi Cinar, Patrick Lynett
{"title":"INVESTIGATING DEBRIS TRANSPORT DURING EXTREME COASTAL EVENTS","authors":"Gizem Ezgi Cinar, Patrick Lynett","doi":"10.9753/icce.v37.structures.101","DOIUrl":"https://doi.org/10.9753/icce.v37.structures.101","url":null,"abstract":"Past extreme coastal events such as the 2004 Indian Ocean Tsunami, the 2011 Tohoku Tsunami and the 2018 Hurricane Michael demonstrated the significance of understanding the debris generation and its transport and impacts during coastal disasters. Although there are many studies on debris loading and impact for damage assessments, very few studies focus on predicting the motion of debris. Nearly all experimental debris motion studies consider tsunami-like flows for the hydrodynamic conditions. Therefore, we still have a major gap in the literature for debris transport under the combined effect of currents and wind waves. Physical model experiments attempted to recreate the dispersion of pier debris to better understand the transport of debris during extreme wave and current events. Visual analysis of spatial and temporal displacement of floating debris was studied performing object detection and tracking by using OpenCV and MATLAB routines.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
PYCNOCLINE THICKNESS EFFECT ON INTERNAL WAVE BREAKING OVER A UNIFORM SLOPE 斜斜厚度对均匀斜坡上内波破碎的影响
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.currents.4
Keisuke Nakayama, Tetsuya Shintani
{"title":"PYCNOCLINE THICKNESS EFFECT ON INTERNAL WAVE BREAKING OVER A UNIFORM SLOPE","authors":"Keisuke Nakayama, Tetsuya Shintani","doi":"10.9753/icce.v37.currents.4","DOIUrl":"https://doi.org/10.9753/icce.v37.currents.4","url":null,"abstract":"Internal waves play a significant role in the resuspension and transport of fine sediment adjacent to the sea bottom in the coastal region. Inall (2009) found the horizontal current and diffusion of mass due to the breaking of internal waves in the Fjord by using a fluorescent tracer. Internal waves have been shown to cause crucial mass transport and affect the ecological system. In particular, an internal solitary wave that progresses without changing the profile contributes to mass transport on a sloping bottom. Therefore, it is essential to clarify how an internal solitary wave breaks over a slope and transports mass. When pycnocline thickness is negligible in a twolayer fluid, an internal solitary wave breaking over a slope can be categorized into four breaker types by applying the latest classification based on wave slope, bottom slope gradient and an internal Reynolds number. Aghsaee et al. (2010) demonstrated that an internal solitary wave breaking over a slope can be categorized into four breaker types: surging, collapsing, plunging, and fission breakers using three-dimensional numerical simulations. They used wave slope and bottom slope gradient. However, some plunging and collapsing breakers were not appropriately categorized. Nakayama et al. (2019) solved the classification problem by introducing an internal Reynolds number based on the Korteweg–De Vries equation. However, it remains unsolved if this classification can categorize the breaking of an internal solitary wave under thick pycnocline conditions. This study uses numerical simulations to investigate the applicability of the classification under changing pycnocline thickness (Nakayama et al., 2021).","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DEPTH-RESOLVED MODELLING OF SEDIMENT FLUXES UNDER BICHROMATIC WAVES IN THE SWASH ZONE 冲积带双色波下沉积物通量的深度分辨模拟
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.currents.8
J.W.M. Kranenborg, G.H.P. Campmans, J.J. Van der Werf, R.T. McCall, A.J.H.M. Reniers, S.J.M.H. Hulscher
{"title":"DEPTH-RESOLVED MODELLING OF SEDIMENT FLUXES UNDER BICHROMATIC WAVES IN THE SWASH ZONE","authors":"J.W.M. Kranenborg, G.H.P. Campmans, J.J. Van der Werf, R.T. McCall, A.J.H.M. Reniers, S.J.M.H. Hulscher","doi":"10.9753/icce.v37.currents.8","DOIUrl":"https://doi.org/10.9753/icce.v37.currents.8","url":null,"abstract":"Traditionally, many numerical studies of sediment transport or morphodynamics in the swash zone use depth-averaged approach. This is relatively computationally cheap, however, the assumptions it makes on vertical structures of the flow velocity and suspended sediment concentration are not always fully met. Depth-resolving models, albeit more computationally expensive, offer the ability to investigate sediment transport without imposing assumptions on vertical structures. Therefore, these models are a great tool for investigating processes related to sediment transport in the swash zone. In this study, will look at the behavior of suspended sediment in the swash zone, and the role vertical structures therein.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE INFLUENCE OF SUBMERGED COASTAL STRUCTURES ON NEARSHORE HYDRODYNAMICS 淹没海岸结构物对近岸水动力的影响
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.waves.18
Renan F. da Silva, Jeff Hansen, Ryan Lowe, Dirk Rijnsdorp, Mark Buckley
{"title":"THE INFLUENCE OF SUBMERGED COASTAL STRUCTURES ON NEARSHORE HYDRODYNAMICS","authors":"Renan F. da Silva, Jeff Hansen, Ryan Lowe, Dirk Rijnsdorp, Mark Buckley","doi":"10.9753/icce.v37.waves.18","DOIUrl":"https://doi.org/10.9753/icce.v37.waves.18","url":null,"abstract":"Submerged coastal structures (e.g., submerged breakwaters and natural and artificial reefs) are common in nearshore waters globally. By locally reducing water depths from the surrounding bathymetry, they modify the incident wave field, mean currents, runup and sediment transport around them. Although submerged structures are generally assumed to promote coastal protection by dissipating waves offshore and creating sheltered conditions in their lee, their interaction with waves can result in wave-driven circulation patterns that may either promote shoreline accretion or erosion (Ranasinghe et al., 2006). A meta-analysis of the coastal changes resulting from the construction of submerged breakwaters found that, contrary to expectation, in the majority of the cases erosion occurred in their lee (Ranasinghe and Turner, 2006). Therefore, a detailed understanding of the wave structure interactions and resulting hydrodynamics is paramount to predict coastal changes in their lee. Here we explore the detailed wave-driven hydrodynamics in the lee of submerged structures using phase-resolved modelling.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
THE WAVE CLIMATE OF SOUTH-EAST AUSTRALIA AND FUTURE WAVE PROJECTION BY THE END OF 21ST CENTURY 澳大利亚东南部的波浪气候及21世纪末的未来波浪预测
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.waves.1
Jin Liu, Ian Young, Alberto Meucci
{"title":"THE WAVE CLIMATE OF SOUTH-EAST AUSTRALIA AND FUTURE WAVE PROJECTION BY THE END OF 21ST CENTURY","authors":"Jin Liu, Ian Young, Alberto Meucci","doi":"10.9753/icce.v37.waves.1","DOIUrl":"https://doi.org/10.9753/icce.v37.waves.1","url":null,"abstract":"In this study, high-resolution unstructured ocean wave datasets based on a third-generation wave model (WAVEWATCH III, WW3) were developed for south-east Australia. Through this study, we aim to understand the wave climate based on hindcast model datasets and develop future wave projections by the end of the 21st century.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
COMPARISON OF FIELD AND FORECAST METOCEAN DATA IN THE GERMAN BIGHT 德国海域气象资料与预报资料之比较
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.management.87
Lukas Froehling, Thilo Grotebrune, Arndt Hildebrandt
{"title":"COMPARISON OF FIELD AND FORECAST METOCEAN DATA IN THE GERMAN BIGHT","authors":"Lukas Froehling, Thilo Grotebrune, Arndt Hildebrandt","doi":"10.9753/icce.v37.management.87","DOIUrl":"https://doi.org/10.9753/icce.v37.management.87","url":null,"abstract":"Offshore wind energy can contribute significantly to achieve greenhouse gas neutrality in the near future. But the planning, construction and operation of offshore wind parks is associated with high costs. In particular, the operation and maintenance (OandM) costs account for a major fraction and in turn are also dependent on appropriate weather windows in which working vessels can operate. A precise knowledge of how wind, sea state and currents affect each other, as well as the most accurate possible prediction of the development, is essential to maximize these periods and reduce the resulting costs. For the German Bight, the high-resolution coastal wave model (CWAM) is often used for this purpose. The CWAM is based on WAM (Hasselmann et al. 1988) and was developed by the German Meteorological Service (DWD) and German Maritime and Hydrographic Agency (BSH) in cooperation with the Helmholtz-Zentrum Hereon. Compared to other WAM models it offers the advantages of higher resolution, as well as the consideration of current speeds and tide-dependent water depths. The BSH also operates multiple measuring stations in the German Bight, which enable real-time investigation of sea state parameters. The general objective of this study is to compare historical data sets from in situ measurements in the German Bight with numerical forecast data and to identify which factors influence the accuracy of the CWAM and why deviations occur.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MODELLING WAVE OVERTOPPING AND WAVE IMPACTS BY MEANS OF IMAGE CLUSTERING TECHNIQUES 利用图像聚类技术模拟波浪过顶和波浪冲击
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.structures.45
Sara Mizar Formentin, Elisa Dallavalle, Barbara Zanuttigh
{"title":"MODELLING WAVE OVERTOPPING AND WAVE IMPACTS BY MEANS OF IMAGE CLUSTERING TECHNIQUES","authors":"Sara Mizar Formentin, Elisa Dallavalle, Barbara Zanuttigh","doi":"10.9753/icce.v37.structures.45","DOIUrl":"https://doi.org/10.9753/icce.v37.structures.45","url":null,"abstract":"The experimental modelling of the wave-structure interaction processes is a very complicated issue, due to the highly non-linear turbulent flow conditions, including wave breaking and air entrainment (Stringari et al., 2021). Recently, Formentin et al. (2021) demonstrated that videography can provide a reliable representation of the wave breaking, of the wave overtopping and of the wave impact at walls. They filmed laboratory tests of wave overtopping at smooth dikes with crown walls (Formentin et al., 2018; Palma et al., 2020) with a low-cost full-HD camera and compared the results of the video-cluster analysis applied to its records with the measurements obtained through traditional techniques. They derived accurate quantitative estimations of free-surface elevation, wave overtopping discharge, volumes, velocities and celerities. The aim of this paper is to further investigate the possibilities of the videography by focusing on the analysis of the wave impacts at the walls and on the detection of the amount of air entrapped during the impacts themselves.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CHANNEL CONCENTRATION AND ITS IMPACT ON NEARSHORE WAVE CONDITIONS 航道集中及其对近岸波况的影响
Proceedings of ... Conference on Coastal Engineering Pub Date : 2023-09-01 DOI: 10.9753/icce.v37.waves.49
Ben Modra
{"title":"CHANNEL CONCENTRATION AND ITS IMPACT ON NEARSHORE WAVE CONDITIONS","authors":"Ben Modra","doi":"10.9753/icce.v37.waves.49","DOIUrl":"https://doi.org/10.9753/icce.v37.waves.49","url":null,"abstract":"Channel concentration is an important wave process in coastal regions. It occurs when a shallow water wave approaches a deep channel at a shallow angle, producing a localized region of increased wave height at the edge of the channel, and the early onset of wave breaking. Channel concentration can occur at dredge channels, so is of particular significance to port entrances and surrounding infrastructure, especially for breakwater heads. It also occurs at natural features such as submarine canyons, particularly where the canyon is perpendicular to the coastline. In contrast to refraction or channel reflection, channel concentration is not well documented in the available literature. While studies show wave concentration as a significant coastal process, there is insufficient information on the process to provide general design guidance for its consideration in harbour projects. As such, there is still the need to use design tools such as physical modelling to ensure the site specific wave conditions are characterised correctly.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135433365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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