Pub Date : 2023-09-01DOI: 10.9753/icce.v37.management.35
Elise J. Buller, Kendall C. Mollison, Hannah E. Power
Submarine canyons have been identified on nearly all margins around the world (Urlaub et al., 2013). Their configuration and morphology has been attributed to several factors including geology, tectonism, sea-level variations, and sediment supply to the region (Laursen and Normark, 2002) with processes occurring over varying temporal and spatial scales driving complex morphologies (Drexler, et al., 2006). A common process in submarine canyons is the mass wasting of sediment in the form of submarine landslides (SMLS) (Brothers, et al., 2013). A SMLS is a displacement of sediment or debris driven by gravity where the downslope forces are greater than the forces that are acting to resist the mass-failures (Mountjoy and Micallef, 2018). The potential tsunami hazard posed by these SMLS was assessed by Buller et al. (2021) using empirical calculations which showed that these SMLSs posed a tsunami threat to the adjacent coastline with calculated wave amplitudes ranging from 2.13 – 15.90 m. However, the tsunami risk assessed in their study was a conservative initial assessment and did not consider how local bathymetry influenced tsunami propagation.
海底峡谷已经在世界上几乎所有的边缘地区被发现(Urlaub等人，2013)。它们的结构和形态归因于几个因素，包括地质、构造、海平面变化和该地区的沉积物供应(Laursen和Normark, 2002)，在不同的时空尺度上发生的过程驱动了复杂的形态(Drexler等，2006)。海底峡谷中一个常见的过程是以海底滑坡(SMLS)的形式大量浪费沉积物(Brothers, et al.， 2013)。SMLS是由重力驱动的沉积物或碎片的位移，其中下坡力大于用于抵抗质量破坏的力(Mountjoy和Micallef, 2018)。Buller等人(2021)利用经验计算评估了这些小浪产生的潜在海啸危害，结果表明，这些小浪产生的波浪幅值在2.13 - 15.90 m之间，对邻近海岸线构成海啸威胁。然而，在他们的研究中评估的海啸风险是一个保守的初步评估，并没有考虑到当地的水深测量对海啸传播的影响。
{"title":"3D NUMERICAL MODELLING OF FIVE SUBMARINE LANDSLIDE SCENARIOS IN PERTH CANYON, AUSTRALIA TO ASSESS TSUNAMIGENIC HAZARD","authors":"Elise J. Buller, Kendall C. Mollison, Hannah E. Power","doi":"10.9753/icce.v37.management.35","DOIUrl":"https://doi.org/10.9753/icce.v37.management.35","url":null,"abstract":"Submarine canyons have been identified on nearly all margins around the world (Urlaub et al., 2013). Their configuration and morphology has been attributed to several factors including geology, tectonism, sea-level variations, and sediment supply to the region (Laursen and Normark, 2002) with processes occurring over varying temporal and spatial scales driving complex morphologies (Drexler, et al., 2006). A common process in submarine canyons is the mass wasting of sediment in the form of submarine landslides (SMLS) (Brothers, et al., 2013). A SMLS is a displacement of sediment or debris driven by gravity where the downslope forces are greater than the forces that are acting to resist the mass-failures (Mountjoy and Micallef, 2018). The potential tsunami hazard posed by these SMLS was assessed by Buller et al. (2021) using empirical calculations which showed that these SMLSs posed a tsunami threat to the adjacent coastline with calculated wave amplitudes ranging from 2.13 – 15.90 m. However, the tsunami risk assessed in their study was a conservative initial assessment and did not consider how local bathymetry influenced tsunami propagation.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"21 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":"135433457","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}
Mangroves, a major type of nature-based solution in the tropics and subtropics, were evidenced capable of reducing wave energy in tsunami and storm events. The typical species, Rhizophora with its complex root system, was found effective in wave attenuation (Tanaka et al. 2007) and was studied experimentally using artificial tree models (e.g. Maza et al. 2019). To investigate the impacts of mangrove roots on water waves at a finer scale, we conducted experiments using 3D-printed models that replicated the geometry of natural Rhizophora. This study discusses the resistance of mangrove roots and their impacts on fluid velocity and turbulence.
红树林是热带和亚热带地区以自然为基础的一种主要解决方案，已被证明能够在海啸和风暴事件中降低波浪能量。具有复杂根系的典型物种Rhizophora具有有效的波衰减作用(Tanaka et al. 2007)，并使用人工树模型(如Maza et al. 2019)进行了实验研究。为了在更精细的尺度上研究红树林根系对水波的影响，我们使用3d打印模型进行了实验，这些模型复制了天然根茎草的几何形状。本研究探讨了红树林根系的阻力及其对流体速度和湍流的影响。
{"title":"MANGROVE AND ITS IMPACTS ON WATER WAVES: A MODEL-SCALE LABORATORY STUDY USING 3D REPLICAS OF TYPICAL RHIZOPHORA","authors":"Che-Wei Chang, Nobuhito Mori, Naoki Tsuruta, Kojiro Suzuki, Hideaki Yanagisawa","doi":"10.9753/icce.v37.management.160","DOIUrl":"https://doi.org/10.9753/icce.v37.management.160","url":null,"abstract":"Mangroves, a major type of nature-based solution in the tropics and subtropics, were evidenced capable of reducing wave energy in tsunami and storm events. The typical species, Rhizophora with its complex root system, was found effective in wave attenuation (Tanaka et al. 2007) and was studied experimentally using artificial tree models (e.g. Maza et al. 2019). To investigate the impacts of mangrove roots on water waves at a finer scale, we conducted experiments using 3D-printed models that replicated the geometry of natural Rhizophora. This study discusses the resistance of mangrove roots and their impacts on fluid velocity and turbulence.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"93 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":"135433460","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.management.42
Itxaso Odériz, Nobuhito Mori, Rodolfo Silva, Iñigo J. Losada
The latest report of the IPCC-AR6 warned that coastal regions are one of the most vulnerable areas in the current climate emergency. In response, the knowledge concerning projected climatic-impact drivers (total water level, average and extreme waves) is rapidly progressing to reduce future coastal flooding and erosion risks. Climate change also shifts atmospheric circulation and affects the climate regions and their surrounding areas. This study aims to identify transitional wave climate regions and proposes a map of these critical areas. A spatial-temporal and multivariate analysis, based on Machine Learning approaches, was used to classify the wave parameters into climates for the end of the century (2081-2099) under the RCP8.5 scenario.
{"title":"THE IMPLICATIONS OF TRANSITIONAL CLIMATE REGIONS ON COASTAL RISK","authors":"Itxaso Odériz, Nobuhito Mori, Rodolfo Silva, Iñigo J. Losada","doi":"10.9753/icce.v37.management.42","DOIUrl":"https://doi.org/10.9753/icce.v37.management.42","url":null,"abstract":"The latest report of the IPCC-AR6 warned that coastal regions are one of the most vulnerable areas in the current climate emergency. In response, the knowledge concerning projected climatic-impact drivers (total water level, average and extreme waves) is rapidly progressing to reduce future coastal flooding and erosion risks. Climate change also shifts atmospheric circulation and affects the climate regions and their surrounding areas. This study aims to identify transitional wave climate regions and proposes a map of these critical areas. A spatial-temporal and multivariate analysis, based on Machine Learning approaches, was used to classify the wave parameters into climates for the end of the century (2081-2099) under the RCP8.5 scenario.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"16 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":"135433465","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.management.98
Willington Renteria, Patrick Lynett
Real-time tsunami prediction is a required component of a tsunami warning system. Several advances have been made to improve prediction in the tsunami warning process, including precomputed databases and the assimilation of deep-ocean observations (DART buoys) into numerical modeling (Bernard and Titov, 2015). These improvements aim to accurately and quickly predict the time and height of the tsunami wave impact. Here, two deep learning models (DLM) are developed to predict the maximum tsunami height at a local/long shoreline from four time series observations of ocean bottom pressure data.
海啸实时预报是海啸预警系统的必要组成部分。在改善海啸预警过程中的预测方面已经取得了一些进展，包括预先计算的数据库和将深海观测(DART浮标)同化到数值模拟中(Bernard and Titov, 2015)。这些改进旨在准确、快速地预测海啸波影响的时间和高度。本文建立了两个深度学习模型(DLM)，利用四次海底压力数据的时间序列观测来预测本地/长海岸线的最大海啸高度。
{"title":"DEEP LEARNING TO PREDICT TSUNAMI HEIGHT AT THE SHORELINE USING OCEAN BOTTOM PRESSURE DATA","authors":"Willington Renteria, Patrick Lynett","doi":"10.9753/icce.v37.management.98","DOIUrl":"https://doi.org/10.9753/icce.v37.management.98","url":null,"abstract":"Real-time tsunami prediction is a required component of a tsunami warning system. Several advances have been made to improve prediction in the tsunami warning process, including precomputed databases and the assimilation of deep-ocean observations (DART buoys) into numerical modeling (Bernard and Titov, 2015). These improvements aim to accurately and quickly predict the time and height of the tsunami wave impact. Here, two deep learning models (DLM) are developed to predict the maximum tsunami height at a local/long shoreline from four time series observations of ocean bottom pressure data.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"28 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":"135433521","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.management.48
Manoj Kumar Gangadharan, Temitope E Idowu, Emily Chapman, Jack A Puleo, Jacob Stolle, Damien Pham Van Bang
Past military activity close to the coast has discarded numerous ordnances in the nearshore environment. These ordinances (some of them unexploded; also called UXOs or munitions) are transported by waves and currents and may become exposed on beaches. The increased intensity of storm events may lead to a subsequent increase in UXO exposure and migration. Prolonged exposure of UXOs to ocean conditions leads to surface growth that alters their bulk density. Hence, it is essential to understand the influence of bulk density on mobility characteristics. This study, funded by the Strategic Environment Research and Development Program (SERDP), aims to quantify the processes that affect the mobility and burial of variable density munitions in the surf and swash zones during scaled extreme forcing.
{"title":"MIGRATION AND BURIAL TENDENCIES OF VARIABLE DENSITY MUNITIONS: INITIAL RESULTS FROM A LARGE-SCALE STUDY","authors":"Manoj Kumar Gangadharan, Temitope E Idowu, Emily Chapman, Jack A Puleo, Jacob Stolle, Damien Pham Van Bang","doi":"10.9753/icce.v37.management.48","DOIUrl":"https://doi.org/10.9753/icce.v37.management.48","url":null,"abstract":"Past military activity close to the coast has discarded numerous ordnances in the nearshore environment. These ordinances (some of them unexploded; also called UXOs or munitions) are transported by waves and currents and may become exposed on beaches. The increased intensity of storm events may lead to a subsequent increase in UXO exposure and migration. Prolonged exposure of UXOs to ocean conditions leads to surface growth that alters their bulk density. Hence, it is essential to understand the influence of bulk density on mobility characteristics. This study, funded by the Strategic Environment Research and Development Program (SERDP), aims to quantify the processes that affect the mobility and burial of variable density munitions in the surf and swash zones during scaled extreme forcing.","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":"135433527","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.waves.54
Maile McCann, Patrick Lynett, Behzad Ebrahimi
Boussinesq- type wave models have the accuracy to resolve wave propagation in coastal zones, having the ability to capture nearshore dynamics that include both nonlinear and dispersive effects for relatively short waves. The accuracy of Boussinesq type models over their counterparts which utilize the non- linear shallow water (NLSW) equations provides a clear advantage in studying nearshore processes. However, the computational expense of finding the Boussinesq solution over the NLSW solution hinders fast and/ or real time simulation using Boussinesq type models.
{"title":"FREQUENCY DISPERSION IN DEPTH-INTEGRATED MODELS THROUGH MACHINE LEARNING SURROGATES","authors":"Maile McCann, Patrick Lynett, Behzad Ebrahimi","doi":"10.9753/icce.v37.waves.54","DOIUrl":"https://doi.org/10.9753/icce.v37.waves.54","url":null,"abstract":"Boussinesq- type wave models have the accuracy to resolve wave propagation in coastal zones, having the ability to capture nearshore dynamics that include both nonlinear and dispersive effects for relatively short waves. The accuracy of Boussinesq type models over their counterparts which utilize the non- linear shallow water (NLSW) equations provides a clear advantage in studying nearshore processes. However, the computational expense of finding the Boussinesq solution over the NLSW solution hinders fast and/ or real time simulation using Boussinesq type models.","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":"135433537","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.structures.87
Pedro Lomonaco, William Mitchell, Kiernan Kelty, Daniel Cox, Tori Tomiczek
As coastal communities face increasing chronic and acute hazards, nature-based coastal engineering solutions have experienced a rapid growth in popularity and interest. Recent works on this topic have shown that this “green infrastructure” may be effective at mitigating coastal hazards and thus have potential as sustainable adaptation alternatives to traditional engineering solutions such as seawalls and breakwaters. However, the amount of protection that green infrastructure can provide has yet to be quantified broadly. The purpose of this study is to quantify the wave force attenuation on coastal buildings by an idealized mangrove forest at a prototype scale and provide guidance to engineers in the design and management of mangrove forests to reduce damage due to storm waves over moderate cross-shore distances.
{"title":"LARGE SCALE LABORATORY OBSERVATIONS OF WAVE FORCE REDUCTION ON COASTAL BUILDINGS BY AN IDEALIZED MANGROVE FOREST","authors":"Pedro Lomonaco, William Mitchell, Kiernan Kelty, Daniel Cox, Tori Tomiczek","doi":"10.9753/icce.v37.structures.87","DOIUrl":"https://doi.org/10.9753/icce.v37.structures.87","url":null,"abstract":"As coastal communities face increasing chronic and acute hazards, nature-based coastal engineering solutions have experienced a rapid growth in popularity and interest. Recent works on this topic have shown that this “green infrastructure” may be effective at mitigating coastal hazards and thus have potential as sustainable adaptation alternatives to traditional engineering solutions such as seawalls and breakwaters. However, the amount of protection that green infrastructure can provide has yet to be quantified broadly. The purpose of this study is to quantify the wave force attenuation on coastal buildings by an idealized mangrove forest at a prototype scale and provide guidance to engineers in the design and management of mangrove forests to reduce damage due to storm waves over moderate cross-shore distances.","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":"135433693","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.management.28
Kota Ohizumi, Ryota Nakamura, Daichi Katayama, Shu Ito, Kunihiko Ishibashi, Shigeru Kato
Extreme external forces such as associated with strong cyclones have often caused severe coastal erosions. Numerical simulation models have been employed for evaluating these coastal morphological changes (Roelvink et al., 2009). However, few studies focused on the morphological response caused by tropical cyclones under expected climate change. In this study, field surveys and numerical simulations were conducted to evaluate morphological changes caused by typhoon Lupit (2021) on Niigata coast. PGW (Pseudo Global Warming) methods under the SSP scenarios of IPCC AR6 were used to simulate morphological responses under expected climate change.
与强气旋有关的极端外力常常造成严重的海岸侵蚀。数值模拟模型被用于评估这些海岸形态变化(Roelvink et al.， 2009)。然而，在预期的气候变化条件下，热带气旋对植被形态的响应研究较少。本研究采用野外调查和数值模拟的方法，对台风Lupit(2021)对新泻海岸造成的地貌变化进行了评价。采用IPCC AR6的SSP情景下的PGW(伪全球变暖)方法模拟了预期气候变化下的地貌响应。
{"title":"PSEUDO GLOBAL WARMING EXPERIMENTS OF BEACH MORPHOLOGICAL CHANGE: CASE STUDY IN NIIGATA COAST CAUSED BY TYPHOON LUPIT (2021)","authors":"Kota Ohizumi, Ryota Nakamura, Daichi Katayama, Shu Ito, Kunihiko Ishibashi, Shigeru Kato","doi":"10.9753/icce.v37.management.28","DOIUrl":"https://doi.org/10.9753/icce.v37.management.28","url":null,"abstract":"Extreme external forces such as associated with strong cyclones have often caused severe coastal erosions. Numerical simulation models have been employed for evaluating these coastal morphological changes (Roelvink et al., 2009). However, few studies focused on the morphological response caused by tropical cyclones under expected climate change. In this study, field surveys and numerical simulations were conducted to evaluate morphological changes caused by typhoon Lupit (2021) on Niigata coast. PGW (Pseudo Global Warming) methods under the SSP scenarios of IPCC AR6 were used to simulate morphological responses under expected climate change.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"100 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":"135433695","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}
Pub Date : 2023-09-01DOI: 10.9753/icce.v37.structures.71
Melanie Bishop, Maria Vozzo, Mariana Mayer-Pinto, Katherine Dafforn
Marine construction is a growing source of biodiversity loss in our oceans. The ecological impacts of marine constructions arise both from their destruction and degradation of natural habitats, but also their flat and often featureless surfaces, which provide little protection to marine life from predation and environmental stressors (Bulleri, Chapman 2010; Airoldi et al. 2005). The net effect is loss of native biodiversity, and spread of pest species. Marine “eco-engineering” seeks to mitigate some of these impacts by co-designing marine constructions for humans and nature (Chapman et al. 2018). Small-scale experiments indicate benefits to biodiversity of adding complex surface geometries to marine built structures (Strain et al. 2018, 2020). However, there are few examples where habitat complexity has been added to marine constructions at scale. We assessed the biodiversity benefits of adding habitat complexity to seawalls at scales of tens of meters, We also compared the efficacy of different types of habitat complexity in benefiting biodiversity.
海洋建设日益成为海洋生物多样性丧失的一个原因。海洋建筑对生态的影响不仅来自其对自然栖息地的破坏和退化，还来自其平坦且通常没有特征的表面，这些表面对海洋生物免受捕食和环境压力的保护作用很小(Bulleri, Chapman 2010;Airoldi等人，2005)。净影响是本地生物多样性的丧失和有害物种的传播。海洋“生态工程”试图通过共同设计人类和自然的海洋建筑来减轻其中的一些影响(Chapman et al. 2018)。小规模实验表明，在海洋建筑结构中添加复杂的表面几何形状对生物多样性有好处(Strain et al. 2018,2020)。然而，很少有大规模地将栖息地复杂性添加到海洋建筑中的例子。我们在数十米尺度上评估了增加生境复杂性对海堤生物多样性的益处，并比较了不同类型生境复杂性对生物多样性的益处。
{"title":"BIODIVERSITY BENEFITS OF SCALING UP MARINE ECO-ENGINEERING","authors":"Melanie Bishop, Maria Vozzo, Mariana Mayer-Pinto, Katherine Dafforn","doi":"10.9753/icce.v37.structures.71","DOIUrl":"https://doi.org/10.9753/icce.v37.structures.71","url":null,"abstract":"Marine construction is a growing source of biodiversity loss in our oceans. The ecological impacts of marine constructions arise both from their destruction and degradation of natural habitats, but also their flat and often featureless surfaces, which provide little protection to marine life from predation and environmental stressors (Bulleri, Chapman 2010; Airoldi et al. 2005). The net effect is loss of native biodiversity, and spread of pest species. Marine “eco-engineering” seeks to mitigate some of these impacts by co-designing marine constructions for humans and nature (Chapman et al. 2018). Small-scale experiments indicate benefits to biodiversity of adding complex surface geometries to marine built structures (Strain et al. 2018, 2020). However, there are few examples where habitat complexity has been added to marine constructions at scale. We assessed the biodiversity benefits of adding habitat complexity to seawalls at scales of tens of meters, We also compared the efficacy of different types of habitat complexity in benefiting biodiversity.","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":"135433698","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}
Coral islands with low-lying accumulations of wave-deposited carbonate bioclasts are suffering significant erosion and flooding threats due to sea level rise and wave climate changes. Properties of coral gravels are distinct from natural quartz sands in its larger skeletal porosity and more irregular shape (de Kruijf et al., 2021). This study aims to investigate how the particle shape affects bedload transport process of coral gravels under turbulent flow by means of laboratory experiments, which can provide insights for better predictive skills of morphology change of coral islands.
{"title":"EFFECT OF GRAIN SHAPE ON BEDLOAD TRANSPORT OF CORAL GRAVELS UNDER TURBULENT FLOW","authors":"Lilei Mao, Jiabo Li, Yoshimitsu Tajima, Takenori Shimozono","doi":"10.9753/icce.v37.sediment.33","DOIUrl":"https://doi.org/10.9753/icce.v37.sediment.33","url":null,"abstract":"Coral islands with low-lying accumulations of wave-deposited carbonate bioclasts are suffering significant erosion and flooding threats due to sea level rise and wave climate changes. Properties of coral gravels are distinct from natural quartz sands in its larger skeletal porosity and more irregular shape (de Kruijf et al., 2021). This study aims to investigate how the particle shape affects bedload transport process of coral gravels under turbulent flow by means of laboratory experiments, which can provide insights for better predictive skills of morphology change of coral islands.","PeriodicalId":497926,"journal":{"name":"Proceedings of ... Conference on Coastal Engineering","volume":"35 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":"135433700","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}
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