Ocean & Coastal Management最新文献

{"title":"Compartmentalization strategy for coastal flooding mitigation with application to a Northern Adriatic site","authors":"","doi":"10.1016/j.ocecoaman.2024.107362","DOIUrl":"10.1016/j.ocecoaman.2024.107362","url":null,"abstract":"<div><p>A method of compartmentalization has been developed to address the safety concerns of urban areas from coastal flooding, especially in situations where reinforcing the first line of defence (dunes, levees, etc.) is challenging due to, for instance, environmental limitations. Various compartmentalization options can be considered and evaluated in order to govern the flooding. Each option should be modelled with a suited numerical tool to better define the alternatives, determine the minimum height of the elements that bound the compartments and verify their effectiveness for the preliminary design, e.g. for the environmental screening stage. The methodology is demonstrated for a real case study, the flooding of Lido di Volano that occurred on November 22, 2022, using a simplified shallow water equations model designed for GPU computing to simulate large-scale flooding scenarios. Two compartmentalization schemes have been identified, both of which involve raising the existing road level. The maximum water levels in different zones of the study area are assessed as a function of crest height. These schemes have proven to be effective in protecting the urban settlement from flooding. Overall, the proposed method of compartmentalization, supported by a real case study analysis, offers a systematic approach to enhance the safety and the resilience of urban coastal areas. This type of solution capitalises on the experience of the local managers and technicians and may represent a shared solution among the coastal governance actors.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0964569124003478/pdfft?md5=4093f012c7079123d07989605ecdb45b&pid=1-s2.0-S0964569124003478-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142171668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization berth allocation in container terminals: A Pyomo and Google Colab approach","authors":"","doi":"10.1016/j.ocecoaman.2024.107359","DOIUrl":"10.1016/j.ocecoaman.2024.107359","url":null,"abstract":"<div><p>Efficient berth allocation profoundly influences container terminal operations, affecting vessel waiting and turnaround times, and overall performance. This study presents a mixed-integer linear programming (MILP) model addressing the Berth Allocation Problem (BAP) in a Malaysian container port. By incorporating the Pyomo optimization library and CBC (Coin-or Branch and Cut) solver in Google Colab, optimal berth allocations are determined, minimizing vessel turnaround times. Visualized in a Space-Time diagram, the results highlight efficient allocation strategies. Despite limitations, the study optimally resolved three instances, achieving a remarkable 38.54% reduction in overall vessel turnaround time compared to FCFS (First-Come-First-Serve) allocation. By prioritizing port turnaround time, the optimization substantially reduced berthing and departure delays, aligning with UNCTAD's call for enhanced port efficiency and accelerated decarbonization efforts.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142171671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamic rolling scheduling model for multi-AGVs in automated container terminals based on spatio-temporal position information","authors":"","doi":"10.1016/j.ocecoaman.2024.107349","DOIUrl":"10.1016/j.ocecoaman.2024.107349","url":null,"abstract":"<div><p>Maritime transport is a crucial mode of transportation, with automated container ports playing a significant role in enhancing maritime efficiency and representing a key trend in maritime logistics. Challenges exist in researching and applying methods to ensure efficient and stable operation of automated container ports, such as rational task assignment for Automated Guided Vehicles (AGVs) and rapid conflict-free path planning. This paper studies a combinatorial optimization scheme for AGVs by designing a new task assignment method and proposing an improved AGV automatic obstacle avoidance A-star algorithm (IAOA-A algorithm) to address these problems in dynamic obstacle avoidance situations. Firstly, to enhance the effectiveness and timeliness of task allocation, this paper redefines the calculation index of the container urgency level (CUL) for use in the path optimization algorithm’s weight calculation. Secondly, to achieve collision-free path planning for AGVs, a two-dimensional spatio-temporal obstacle model is designed to describe the dynamic location information of AGVs, and the search process is accelerated by optimizing the search space and improving the evaluation function strategy. Finally, these methods are integrated into a rolling scheduling model to achieve global conflict-free path planning for AGVs. Experimental comparisons on AGV transport tasks show that the allocation rule based on CUL effectively reduces the average relative percentage difference (ARPD), resulting in more timely task completion. Compared to the traditional A-star algorithm, the proposed IAOA-A algorithm improves time efficiency by 24.45%, with visualization results indicating a significant reduction in the number of search nodes. In tests with varying numbers of AGVs and task scales, the results demonstrate that the rolling scheduling model proposed in this paper can efficiently and quickly perform global scheduling of AGVs.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142171670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multilateral collaborative governance of Arctic shipping safety: Examining the impact of the Arctic Council via collaborative network analysis","authors":"","doi":"10.1016/j.ocecoaman.2024.107363","DOIUrl":"10.1016/j.ocecoaman.2024.107363","url":null,"abstract":"<div><p>Global climate change has dramatically reduced Arctic sea ice, opening new potential shipping routes, which has garnered international attention. This study explores the role of the Arctic Council in the collaborative governance network focused on Arctic shipping safety. For this purpose, a collection of 49 collaborative events initiated by international organisations and the Arctic Council was used as the data sample. These events are divided into two groups, one containing all the events and the other excluding those initiated by the Arctic Council. As a result, two collaborative networks are developed and evaluated based on network density, average path length, network transitivity, centrality indices (degree, closeness, betweenness), and clustering analysis. The results demonstrate that the Arctic Council significantly enhances the network density and transitivity of the international collaboration network, and reshapes core-periphery dynamics and cohesive subgroup structures. For instance, under the influence of the Arctic Council, Canada, France, and Japan surpass the United Kingdom in centrality (degree, closeness, betweenness). Results of the clustering coefficients reveal the Arctic Council's impact on connections among states, leading to shifts in collaboration patterns. Additionally, subgroup cohesion and density coefficients confirm the Arctic Council's role in promoting collaboration among states and restructuring governance networks.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142167952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Economic impacts at the county level of marine protected areas designation in China","authors":"","doi":"10.1016/j.ocecoaman.2024.107366","DOIUrl":"10.1016/j.ocecoaman.2024.107366","url":null,"abstract":"<div><p>Designating protected areas to balance environmental conservation and economic development is a widely debated issue. Evaluating the economic impacts of protected areas designation offers solutions to this challenge, and studying the economic impacts of China's marine protected areas (MPAs) holds particular significance due to their predominant location along the economically developed eastern coast of China. Treating MPAs designation as a quasi-natural experiment, it is analyzed using a multi-period difference-in-differences (DID) model based on the panel data of coastal counties during 2000–2021. The results consistently inform that China's MPAs designation has negative impacts on the economic development of coastal counties, and these negative economic impacts can accumulate over time. Mediator tests show that MPAs designation significantly hampers the improvement of the local industrial structure, which partially explains the negative economic impacts. This indicates that after the designation of MPAs in coastal counties, there is an opportunity cost in terms of economic development, highlighting the need for ecological compensation for the designation of MPAs in coastal counties. Additionally, the extent of the negative impacts varies depending on the location of the MPAs, with MPAs in the North Sea producing the biggest impacts and those in the South Sea the least. This suggests that priority should be given to the South Sea in selecting marine national parks to achieve a balance between economic and conservation objectives. The study effectively quantified the negative impact of MPAs on economic development within a novel context. The findings offer valuable insights for addressing the broader conflict between environmental protection and economic development.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perceived effectiveness drives shoreline decision-making for Florida's waterfront property owners","authors":"","doi":"10.1016/j.ocecoaman.2024.107353","DOIUrl":"10.1016/j.ocecoaman.2024.107353","url":null,"abstract":"<div><p>Urbanization of shorelines has altered the structure, function, and dynamics of coastal ecosystems. Consequently, these areas are less resilient to sea-level rise and coastal flooding. To protect vulnerable property, coastal residents often harden their shorelines using traditional approaches like seawalls and bulkheads. Nature-based solutions, such as living shorelines, are an alternative method to prevent erosion while providing additional benefits but are less common than hardened shorelines. Because decisions regarding private shoreline management often fall on the homeowner, there is a need to understand perceptions of shoreline management options. We conducted an address-based survey of waterfront property owners in Florida to explore their satisfaction with their current shoreline and driving factors behind how they manage and protect their shoreline. Perceived effectiveness was the most important factor driving shoreline management decisions. Most respondents were satisfied with their shoreline regardless of shoreline type (mean ± SD = 7.5 ± 2.3 of 10), but satisfaction was significantly higher among homeowners with natural shorelines (8.22 ± 2.13) than those with armored shorelines (7.38 ± 2.19). Owners of living and natural shorelines reported spending less time and money on their shorelines and recognized the environmental benefits by assigning significantly higher environmental ratings to their shorelines (4.20 ± 0.75 and 4.29 ± 0.20 of 5, respectively) in comparison to homeowners with armored shorelines (3.22 ± 0.79). However, respondents perceived natural and living shorelines to be significantly less effective at shoreline protection (mean protection score of 3.46 ± 1.10 and 3.49 ± 0.66 of 5, respectively) compared to armored shorelines (mean protection score = 4.0 ± 0.75). Analyses revealed a strong influence of neighboring shoreline type, though only 21.5% of waterfront property owners in our survey self-identified this as a major driver of their decisions. Moreover, there appears to be a general lack of understanding about how shoreline management decisions affect adjacent properties, with only 34.7% of respondents believing that a neighboring shoreline influenced their own. Owners of armored and hybrid shorelines exhibited a general belief that their shoreline benefitted neighboring properties (ratings of 3.59 ± 0.91 and 3.45 ± 0.86 of 5, respectively) while owners of natural shorelines rated their shoreline's influence as most neutral (2.67 ± 0.65). Further research into the effectiveness of different living shoreline designs compared to hardened shorelines to prevent erosion and storm damage may lead to greater adoption of living shorelines. Strategic communications focusing on aspects most misunderstood or most valued by homeowners, such as effectiveness, longevity, and cost, could increase the salience of living shorelines as an advantageous shoreline management approach.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0964569124003387/pdfft?md5=08578f9d22c40923e232acddc3974b46&pid=1-s2.0-S0964569124003387-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing the sustainability of Blue Economy activities using an ecosystem and life cycle-based approach: Possibilities, challenges and implications for an informed policy making","authors":"","doi":"10.1016/j.ocecoaman.2024.107360","DOIUrl":"10.1016/j.ocecoaman.2024.107360","url":null,"abstract":"<div><p>The global ocean faces increasing exploitation to meet the demand of a rapidly growing globalisation. Human marine activities are leading to local environmental pressures/benefits, for example on marine ecosystems and their services, but also through their value chains on terrestrial ecosystem services, and to global pressures such as global warming. Effective management of marine activities is essential for the conservation of the natural environment. There is a growing need for holistic sustainability assessment tools capable of quantifying environmental impacts at various geographical scales, alongside evidence-informed policies. This study examines the evolving marine policy landscape, identifies key legislation that supports the sustainable growth of the Blue Economy, traces its historical development, and explores the integration of ecosystem services assessment and life cycle assessment as methodologies for assessing environmental sustainability within this legislation. The review shows that current legislation falls short in providing instructions on how to measure sustainability impacts in a consistent way, i.e., which methods/indicators to use. Therefore, this study supports evidence-informed policy-making by proposing a quantitative and comprehensive environmental sustainability impact assessment methodology, integrating both ecosystem and life-cycle based methods, to a Belgian multi-use case study involving offshore wind energy and mussel farming. Considering the impacts that were possible to assess and the limits of the methodology used, the value of the positive impacts of the MUOF was +61.3 M€ y⁻, while the negative ones were −4.0 M€ y⁻¹, resulting in a net handprint of +57.0 M€ y⁻¹, primarily attributed to the benefits of the local ecosystem service ‘offshore renewable energy’ However, such a solution is not necessarily scalable, due to cumulative impacts. An analysis was conducted to identify areas for enhancing the methodology to more effectively meet policy needs. The study highlights the importance of using scientifically grounded methods to inform policy decisions.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0964569124003454/pdfft?md5=a0552edd7dd91d8c78ae2394d9a79558&pid=1-s2.0-S0964569124003454-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142158029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conceptualization of territorial resilience potential indicators to coastal hazards through the use of unmanned aerial vehicles","authors":"","doi":"10.1016/j.ocecoaman.2024.107350","DOIUrl":"10.1016/j.ocecoaman.2024.107350","url":null,"abstract":"<div><p>Major natural hazards in recent decades have led to a revisiting of the concept of resilience, particularly in order to analyze traditional models of response to an unforeseen event and post-crisis management mechanisms. For resilience to be an applicable/operational concept to guide management and inform decisions, it must ultimately be characterized for its assessment. This assessment can be done through the identification of indicators specifically contextualized to the study site and object of study. However, today, operationalizing of the concept of resilience tends to draw on annual censuses or aggregated data, providing a generalized large scale view of the territorial resilience potential. The objective of this study is to identify a table of Territorial Resilience Potential (TRP) indicators to coastal hazards applied to coastal island territories, supplied by data from Unmanned Aerial Vehicles (UAVs) to allow for rapid and site specific data acquisition for repetitive surveys. This acquisition method makes it possible to calculate a number of relevant indicators for assessing the resilience potential of coastal areas. In particular, it allows rapid updating of data following major meteorological events and identification of hot and cold spots of resilience potential of a specific study site. To demonstrate the applicability of this method to island territories, the island of Bora Bora in French Polynesia was used as a case study. Finally, these kinds of results can be fed through a spatial decision support system to help decision-makers choose an adaptation and protection strategy in order to move towards resilient territories, over a long period of time.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors influencing ship detentions: Pre- and post-pandemic analysis","authors":"","doi":"10.1016/j.ocecoaman.2024.107344","DOIUrl":"10.1016/j.ocecoaman.2024.107344","url":null,"abstract":"<div><p>Extensive research has examined the determinants of ship detentions during port state control inspections. This study integrates market factors into the analysis of ship deficiencies and detention duration for the first time. To analyze the factors affecting the number of deficiencies and detention duration, a comprehensive system of indicators incorporating intrinsic attributes (e.g., ship age, flag state, gross tonnage, and ship type) and extrinsic factors (e.g., flag state and recognized organizations' performance level, historical inspections, and detentions of port states) was established. Employing statistical analysis, we formulated four generalized linear models to assess the temporal variations in these factors across the pre- and post-pandemic periods. Our results indicate that inspection authorities (port states) consistently influence detentions across various ship categories, and the extent of reported ship deficiencies and detention duration varies with the enforcement rigor of port states. Notably, the shipping market's impact is most evident in bulk carriers and oil tankers, with the pandemic markedly influencing port state inspections. In the post-pandemic era, the niche shipping market has seen a decline in the impact of detention duration on bulk carriers and tankers, and in the number of deficiencies on container ships. China and Russia have increased inspections of bulk carriers and oil tankers, while the impact of Australia and Japan on bulk carriers and container ships has weakened. This research not only explores the association between the shipping market and ship detentions for the first time but also contrasts the detention landscape pre- and post-pandemic, offering insights for shipping companies and port authorities to enhance ship operational safety.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating spatiotemporal coastline changes and impacts on coastal zone management: A case study in Pearl River Estuary and Hong Kong's coast","authors":"","doi":"10.1016/j.ocecoaman.2024.107354","DOIUrl":"10.1016/j.ocecoaman.2024.107354","url":null,"abstract":"<div><p>Changes in coastlines and coastal zones reflect human activities and global changes. Using Landsat imagery from 1998 to 2021, the temporal and spatial variation characteristics of coastlines and the coastal zone land-use/land-cover (LULC) in Pearl River Estuary and Hong Kong's coast were studied during this period, followed by an analysis of how human activity affects coastline changes, in an attempt to provide a basis for decision-making in coastal zone management. Our results show that the coastline expanded outward, demonstrating an obvious trend that featured increasing length. The coastal zone was observed to primarily comprise construction land and woodland, of which the construction land displayed significant growth in contrast to the woodland's decreasing trend, indicating that the coastline was changing from natural to artificial in character. Human activity in the coastal zone had a significantly positive impact on the coastline length. While the amount of coastline in all sub-regions of the study has increased overall, the coastline length in Guangzhou-Dongguan, in particular, exhibited the greatest growth. During analysis, a positive correlation emerged between coastline length and fractal dimension, in particular, the correlation between Shenzhen coastline length and fractal dimension demonstrated the highest level among the four sub-regions studied. With the exception of Hong Kong, construction land increased significantly in all coastal areas and encroached on other types of land, such as cultivated land and woodland. In addition, except for Hong Kong, human disturbance in the coastal zone increased. Among all study areas, Shenzhen revealed a significant increase in human disturbance over the period of interest, exhibiting the highest level of this factor among the sub-regions of the study. These findings could potentially facilitate effective coastal zone management to achieve sustainable development in coastal areas.</p></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":null,"pages":null},"PeriodicalIF":4.8,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142136537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}