Pub Date : 2024-11-30DOI: 10.1016/j.ocecoaman.2024.107505
Guiyang Ling , Chuanfeng Han , Zhensheng Yang , Junliang He
The increasingly stringent international environmental protection requirements and the progressively tougher compliance requirements of shipowners have also put forward new development needs for low-emission, clean-energy vessels. At present, more than 90% of China's water transport ships still use diesel-powered propulsion systems, which have issues such as high fuel costs, high noise levels, and pollution emissions. Compared with traditional ship power systems, the ecological advantages and comprehensive benefits of electric propulsion-type ships are obvious. However, there are also issues, such as shorter range and battery life, which need to be analyzed in depth. This paper establishes a life cycle energy consumption model and emission model for the comprehensive benefits of electric ships and conducts an economic benefit analysis. The results show that electric ships have significant advantages in environmental protection, energy saving and lower costs while electric ships for containers have great prospects for future development. This paper provides a useful exploration for the international shipping industry to adopt effective measures to control ship emissions.
{"title":"Energy consumption and emission analysis for electric container ships","authors":"Guiyang Ling , Chuanfeng Han , Zhensheng Yang , Junliang He","doi":"10.1016/j.ocecoaman.2024.107505","DOIUrl":"10.1016/j.ocecoaman.2024.107505","url":null,"abstract":"<div><div>The increasingly stringent international environmental protection requirements and the progressively tougher compliance requirements of shipowners have also put forward new development needs for low-emission, clean-energy vessels. At present, more than 90% of China's water transport ships still use diesel-powered propulsion systems, which have issues such as high fuel costs, high noise levels, and pollution emissions. Compared with traditional ship power systems, the ecological advantages and comprehensive benefits of electric propulsion-type ships are obvious. However, there are also issues, such as shorter range and battery life, which need to be analyzed in depth. This paper establishes a life cycle energy consumption model and emission model for the comprehensive benefits of electric ships and conducts an economic benefit analysis. The results show that electric ships have significant advantages in environmental protection, energy saving and lower costs while electric ships for containers have great prospects for future development. This paper provides a useful exploration for the international shipping industry to adopt effective measures to control ship emissions.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"261 ","pages":"Article 107505"},"PeriodicalIF":4.8,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748758","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}
Pub Date : 2024-11-30DOI: 10.1016/j.ocecoaman.2024.107492
Zhengliang Xiang , Xu Xin , Tao Zhang , Kang Chen , Miaohui Liu
The recent improvement in navigational conditions along the Northern Sea Route (NSR) has attracted the attention of academia and industrial circles. For liner companies, the NSR offers a considerably shorter voyage distance than the Suez Canal Route does, making it a viable option to increase their profits. However, the overexploitation and utilization of the NSR may produce large amounts of black carbon, thus damaging the Arctic ecosystem. In light of the aforementioned background, we examine the challenges in designing liner shipping networks while considering the navigability and transit cost of the NSR and the environmental costs (i.e., black carbon pollution taxes) associated with black carbon. To this end, we establish a bi-level optimization model. Specifically, the upper-level model selects a network design scheme that maximizes the liner company's profit, whereas the lower-level model optimizes the slot allocation scheme to evaluate the derived network design scheme from the upper-level model. To solve this bi-level model, we develop a meta-heuristic algorithm embedded with a linear programming model and perform numerical experiments via a practical Asia‒Europe shipping route. Sensitivity analyses are conducted under various navigational conditions and black carbon taxes. The findings demonstrate that the proposed model and algorithm can effectively address the network design problem, offering practical managerial insights for the liner company's daily operations and the policy formulation of green sustainable transportation policies by governments of countries along the NSR. This paper provides a valuable contribution to advancing green shipping practices in the Arctic region.
{"title":"Asia‒Europe liner shipping network design model considering Arctic route and black carbon tax","authors":"Zhengliang Xiang , Xu Xin , Tao Zhang , Kang Chen , Miaohui Liu","doi":"10.1016/j.ocecoaman.2024.107492","DOIUrl":"10.1016/j.ocecoaman.2024.107492","url":null,"abstract":"<div><div>The recent improvement in navigational conditions along the Northern Sea Route (NSR) has attracted the attention of academia and industrial circles. For liner companies, the NSR offers a considerably shorter voyage distance than the Suez Canal Route does, making it a viable option to increase their profits. However, the overexploitation and utilization of the NSR may produce large amounts of black carbon, thus damaging the Arctic ecosystem. In light of the aforementioned background, we examine the challenges in designing liner shipping networks while considering the navigability and transit cost of the NSR and the environmental costs (i.e., black carbon pollution taxes) associated with black carbon. To this end, we establish a bi-level optimization model. Specifically, the upper-level model selects a network design scheme that maximizes the liner company's profit, whereas the lower-level model optimizes the slot allocation scheme to evaluate the derived network design scheme from the upper-level model. To solve this bi-level model, we develop a meta-heuristic algorithm embedded with a linear programming model and perform numerical experiments via a practical Asia‒Europe shipping route. Sensitivity analyses are conducted under various navigational conditions and black carbon taxes. The findings demonstrate that the proposed model and algorithm can effectively address the network design problem, offering practical managerial insights for the liner company's daily operations and the policy formulation of green sustainable transportation policies by governments of countries along the NSR. This paper provides a valuable contribution to advancing green shipping practices in the Arctic region.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"261 ","pages":"Article 107492"},"PeriodicalIF":4.8,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748757","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}
Pub Date : 2024-11-30DOI: 10.1016/j.ocecoaman.2024.107507
Anna Lea Eggert , Karsten Arnbjerg-Nielsen , Roland Löwe
Coastal flood risk accelerates rapidly due to rising sea levels and urban expansion in low-lying areas. Many strategies based on the widespread application of hard protection have been developed. However, the implementation of such measures has raised concerns due to their environmental impact, high costs, and a potential increase in exposure.
This study focuses on the economic implications of coastal flood protection at the local level, examining impacts on small to medium-sized cities, which reflects many coastal communities around the world. We introduce a framework for assessing the economic burden or benefit of flood protection strategies on local communities and municipalities. We derive standardized values for protection costs, flood risk, and socioeconomic development for typical coastal topologies, i.e., the data usually used for cost-benefit analyses of coastal protection.
Based on two illustrative examples of coastal cities in different topographies, we demonstrate that cost-effective protection strategies can lead to lock-in situations because their implementation cost likely exceeds local willingness to pay, and we argue that this risk needs to be considered when designing flood adaptation pathways.
{"title":"Evaluating the feasibility of coastal protection scenarios on a city scale across plausible pathways scenarios for both sea level rise and urban development","authors":"Anna Lea Eggert , Karsten Arnbjerg-Nielsen , Roland Löwe","doi":"10.1016/j.ocecoaman.2024.107507","DOIUrl":"10.1016/j.ocecoaman.2024.107507","url":null,"abstract":"<div><div>Coastal flood risk accelerates rapidly due to rising sea levels and urban expansion in low-lying areas. Many strategies based on the widespread application of hard protection have been developed. However, the implementation of such measures has raised concerns due to their environmental impact, high costs, and a potential increase in exposure.</div><div>This study focuses on the economic implications of coastal flood protection at the local level, examining impacts on small to medium-sized cities, which reflects many coastal communities around the world. We introduce a framework for assessing the economic burden or benefit of flood protection strategies on local communities and municipalities. We derive standardized values for protection costs, flood risk, and socioeconomic development for typical coastal topologies, i.e., the data usually used for cost-benefit analyses of coastal protection.</div><div>Based on two illustrative examples of coastal cities in different topographies, we demonstrate that cost-effective protection strategies can lead to lock-in situations because their implementation cost likely exceeds local willingness to pay, and we argue that this risk needs to be considered when designing flood adaptation pathways.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"261 ","pages":"Article 107507"},"PeriodicalIF":4.8,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748759","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}
Pub Date : 2024-11-29DOI: 10.1016/j.ocecoaman.2024.107502
Adela Belackova , Luis Bentes , Lene Buhl-Mortensen , Bárbara Horta e Costa , Jorge Manuel dos Santos Gonçalves
{"title":"Evaluation of MPA effects on small-scale fisheries: A long-term landings-based monitoring approach","authors":"Adela Belackova , Luis Bentes , Lene Buhl-Mortensen , Bárbara Horta e Costa , Jorge Manuel dos Santos Gonçalves","doi":"10.1016/j.ocecoaman.2024.107502","DOIUrl":"10.1016/j.ocecoaman.2024.107502","url":null,"abstract":"","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"261 ","pages":"Article 107502"},"PeriodicalIF":4.8,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748756","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}
Pub Date : 2024-11-27DOI: 10.1016/j.ocecoaman.2024.107503
Adiska Octa Paramita , Stefan Partelow , Nurliah Buhari , Marie Fujitani
In this study, we tested interventions to improve the depth and complexity of deliberation processes with rural aquaculture farmers in Indonesia facing collective action problems in governing water distribution. The field experiment was conducted in four aquaculture villages in Lombok, Indonesia, where farmers were actively involved in the co-management PITAP program to maintain irrigation canals. The intervention was a version of the Social-Ecological Systems Framework (SESF) translated into images that depicted the variables of the framework in the context of the case study. We hypothesized that the connected image-based SESF deliberation tool could facilitate more in-depth discussions on the complexities of social and ecological issues compared to baseline (no images) and control groups (images with no framework relationships). To gauge the farmers' intent to care for irrigation canals post-PITAP collectively, we employed the Reasoned Action Approach (RAA) from environmental psychology. Our experimental study revealed that employing the SESF as an image-based deliberation tool did not measurably improve the depth and complexity of the discussions within the context of the traditional aquaculture communities in Indonesia. Nevertheless, the data derived from the content of discussions indicates that employing the image-based tool results in different but important outcomes among the experimental groups with implications for a better understanding of context and culture where deliberation processes occur. We further reflected on our findings on the hierarchical societal relationships in the context of rural communities in Indonesia that influence the deliberation style and reception.
{"title":"Improving the depth and complexity of stakeholder deliberation using images: Experimental evidence from Indonesia","authors":"Adiska Octa Paramita , Stefan Partelow , Nurliah Buhari , Marie Fujitani","doi":"10.1016/j.ocecoaman.2024.107503","DOIUrl":"10.1016/j.ocecoaman.2024.107503","url":null,"abstract":"<div><div>In this study, we tested interventions to improve the depth and complexity of deliberation processes with rural aquaculture farmers in Indonesia facing collective action problems in governing water distribution. The field experiment was conducted in four aquaculture villages in Lombok, Indonesia, where farmers were actively involved in the co-management PITAP program to maintain irrigation canals. The intervention was a version of the Social-Ecological Systems Framework (SESF) translated into images that depicted the variables of the framework in the context of the case study. We hypothesized that the connected image-based SESF deliberation tool could facilitate more in-depth discussions on the complexities of social and ecological issues compared to baseline (no images) and control groups (images with no framework relationships). To gauge the farmers' intent to care for irrigation canals post-PITAP collectively, we employed the Reasoned Action Approach (RAA) from environmental psychology. Our experimental study revealed that employing the SESF as an image-based deliberation tool did not measurably improve the depth and complexity of the discussions within the context of the traditional aquaculture communities in Indonesia. Nevertheless, the data derived from the content of discussions indicates that employing the image-based tool results in different but important outcomes among the experimental groups with implications for a better understanding of context and culture where deliberation processes occur. We further reflected on our findings on the hierarchical societal relationships in the context of rural communities in Indonesia that influence the deliberation style and reception.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"260 ","pages":"Article 107503"},"PeriodicalIF":4.8,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720235","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}
Pub Date : 2024-11-24DOI: 10.1016/j.ocecoaman.2024.107489
Henry A. Bartelet , Stewart Lockie , Brent W. Ritchie , Csilla Demeter , Lintje Sie , Bruce Taylor
Novel technological interventions are under development to build the resilience of ecosystems by providing short-term protection from climate extremes, enhancing recovery from disturbance, and accelerating adaptation to changed climate states. Drawing on surveys of Australian residents (n = 5320) conducted in 2018 and 2022, this paper investigates support for the development and deployment of six novel interventions on the Great Barrier Reef (marine cloud brightening, fogging, rubble stabilization, coral seeding, natural breeding for heat tolerance, and genetic engineering) and how support varies across time, social groups, perception of climate risk, and approach to intervention. It finds strong support for research and small-scale trials of all six interventions although support was highest for coral seeding, followed by rubble stabilization, fogging, natural breeding, marine cloud brightening, and genetic engineering. Reflecting their early stage of development, support for large-scale deployment of novel interventions across the Great Barrier Reef moderated, with respondents indicating strongest support for deployment of coral seeding, rubble stabilization, and fogging and lower support for natural breeding, marine cloud brightening, and genetic engineering. Trust in science to deliver solutions was a consistently strong predictor of support for both intervention R&D and large-scale deployment. The perceived ability to identify and test environmental impacts was a strong predictor of support for scaled deployment. Perceived climate threat, trust in the Reef's management authority, and ethics were also consistently associated with support for intervention R&D and implementation. With the vast majority of Australian residents supporting strong action to protect and restore coral reefs the maintenance of trust in scientists and scientific institutions stands out as critical to support for the implementation of novel interventions at scale, including the ability of researchers to identify and assess the environmental risks of these interventions.
{"title":"Public support for novel interventions to protect, restore, and accelerate adaptation to climate change in the Great Barrier Reef","authors":"Henry A. Bartelet , Stewart Lockie , Brent W. Ritchie , Csilla Demeter , Lintje Sie , Bruce Taylor","doi":"10.1016/j.ocecoaman.2024.107489","DOIUrl":"10.1016/j.ocecoaman.2024.107489","url":null,"abstract":"<div><div>Novel technological interventions are under development to build the resilience of ecosystems by providing short-term protection from climate extremes, enhancing recovery from disturbance, and accelerating adaptation to changed climate states. Drawing on surveys of Australian residents (<em>n</em> = 5320) conducted in 2018 and 2022, this paper investigates support for the development and deployment of six novel interventions on the Great Barrier Reef (marine cloud brightening, fogging, rubble stabilization, coral seeding, natural breeding for heat tolerance, and genetic engineering) and how support varies across time, social groups, perception of climate risk, and approach to intervention. It finds strong support for research and small-scale trials of all six interventions although support was highest for coral seeding, followed by rubble stabilization, fogging, natural breeding, marine cloud brightening, and genetic engineering. Reflecting their early stage of development, support for large-scale deployment of novel interventions across the Great Barrier Reef moderated, with respondents indicating strongest support for deployment of coral seeding, rubble stabilization, and fogging and lower support for natural breeding, marine cloud brightening, and genetic engineering. Trust in science to deliver solutions was a consistently strong predictor of support for both intervention R&D and large-scale deployment. The perceived ability to identify and test environmental impacts was a strong predictor of support for scaled deployment. Perceived climate threat, trust in the Reef's management authority, and ethics were also consistently associated with support for intervention R&D and implementation. With the vast majority of Australian residents supporting strong action to protect and restore coral reefs the maintenance of trust in scientists and scientific institutions stands out as critical to support for the implementation of novel interventions at scale, including the ability of researchers to identify and assess the environmental risks of these interventions.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"260 ","pages":"Article 107489"},"PeriodicalIF":4.8,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720128","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}
Pub Date : 2024-11-23DOI: 10.1016/j.ocecoaman.2024.107483
Paul Tae-Woo Lee , Zhao-Yu Song , Prem Chhetri , Sung-Ho Shin
This paper aims to analyze China's iron import trade patterns and estimate transportation costs of iron-ore from Australia and Brazil. A twin strategic framework of iron-ore imports from the perspective of economic security and decarbonization of maritime industry is proposed to overcome geographical disadvantage for Brazilian iron-ore suppliers. Augmenting capacity through the deployment of ChinaMax with 400,000 DWT to leverage from economies of scale (so-called economic security strategy) and establishing the longest Green Shipping Corridor (GSC) (so-called decarbonization strategy) are recommended. This will enable Brazil to utilize zero-emission ships that consume green (alternative) fuels. The GSC strategy with zero-emission ships is innovative yet challenging to decarbonize Brazilian Iron-Ore Supply Chain through backward and forward linkage effects. The integration of cost estimation methods with political economy arguments to maintain a balance between China's strategic interest and economic value addition with decarbonization, and maritime security of raw material resources is future proof to business disruptions. The paper concludes by proposing a strategic framework discussion and strategic insights for China.
{"title":"China's twin strategic development of iron-ore imports along the maritime silk road: Economic security and decarbonization of maritime industry","authors":"Paul Tae-Woo Lee , Zhao-Yu Song , Prem Chhetri , Sung-Ho Shin","doi":"10.1016/j.ocecoaman.2024.107483","DOIUrl":"10.1016/j.ocecoaman.2024.107483","url":null,"abstract":"<div><div>This paper aims to analyze China's iron import trade patterns and estimate transportation costs of iron-ore from Australia and Brazil. A twin strategic framework of iron-ore imports from the perspective of economic security and decarbonization of maritime industry is proposed to overcome geographical disadvantage for Brazilian iron-ore suppliers. Augmenting capacity through the deployment of ChinaMax with 400,000 DWT to leverage from economies of scale (so-called economic security strategy) and establishing the longest Green Shipping Corridor (GSC) (so-called decarbonization strategy) are recommended. This will enable Brazil to utilize zero-emission ships that consume green (alternative) fuels. The GSC strategy with zero-emission ships is innovative yet challenging to decarbonize Brazilian Iron-Ore Supply Chain through backward and forward linkage effects. The integration of cost estimation methods with political economy arguments to maintain a balance between China's strategic interest and economic value addition with decarbonization, and maritime security of raw material resources is future proof to business disruptions. The paper concludes by proposing a strategic framework discussion and strategic insights for China.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"260 ","pages":"Article 107483"},"PeriodicalIF":4.8,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720127","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}
Pub Date : 2024-11-22DOI: 10.1016/j.ocecoaman.2024.107482
Yuxuan Li , Jian Gang Jin , Ping He , Chunxia Lu
Eco-friendly vessels, such as biofuel vessels and LNG vessels, have been developed as one of the measures to address emission reductions in the shipping industry. However, as there are limited ports offering biofuel refueling service, ships may need to bypass biofuel refueling ports for fuel refueling. Considering the limitation of biofuel storage period and the fuel consumption in the handling operation before biofuel refueling, ship operators need to reduce the impacts through strategies like speed adjustment, choice of fuel refueling ports. In this paper, we investigate the bunkering and speed optimization problem for dry bulk carriers considering biofuel storage period limitation. A mixed-integer linear programming model is developed for these characteristics of biofuel vessels. We conduct a case study based on a real-world dry bulk cargo route to verify the applicability and effectiveness of the proposed mathematical model. The computational results show that: biofuel dry bulk carriers can reduce the impact of the biofuel storage period limitation and bypassing biofuel refueling ports through the adjustment of sailing speed and bunkering ports. Ship operators can choose more suitable biofuels based on the biofuel consumption plateau caused by the length of biofuel storage period, optimize both speed and the choice of refueling ports.
{"title":"Optimizing bunkering and speed for dry bulk carriers considering biofuel storage period limitation","authors":"Yuxuan Li , Jian Gang Jin , Ping He , Chunxia Lu","doi":"10.1016/j.ocecoaman.2024.107482","DOIUrl":"10.1016/j.ocecoaman.2024.107482","url":null,"abstract":"<div><div>Eco-friendly vessels, such as biofuel vessels and LNG vessels, have been developed as one of the measures to address emission reductions in the shipping industry. However, as there are limited ports offering biofuel refueling service, ships may need to bypass biofuel refueling ports for fuel refueling. Considering the limitation of biofuel storage period and the fuel consumption in the handling operation before biofuel refueling, ship operators need to reduce the impacts through strategies like speed adjustment, choice of fuel refueling ports. In this paper, we investigate the bunkering and speed optimization problem for dry bulk carriers considering biofuel storage period limitation. A mixed-integer linear programming model is developed for these characteristics of biofuel vessels. We conduct a case study based on a real-world dry bulk cargo route to verify the applicability and effectiveness of the proposed mathematical model. The computational results show that: biofuel dry bulk carriers can reduce the impact of the biofuel storage period limitation and bypassing biofuel refueling ports through the adjustment of sailing speed and bunkering ports. Ship operators can choose more suitable biofuels based on the biofuel consumption plateau caused by the length of biofuel storage period, optimize both speed and the choice of refueling ports.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"260 ","pages":"Article 107482"},"PeriodicalIF":4.8,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720133","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}
Pub Date : 2024-11-22DOI: 10.1016/j.ocecoaman.2024.107491
Peng Zhang, Yu Zhang, Yuhan Guo, Shuang Yao
The wind turbine blades are key components of wind turbines. During the working process, the blades are subjected to fatigue loading, resulting in the failure of wind turbine blades. The surface temperature of blade materials will change when subjected to fatigue loading and the temperature rise rate of blade surface under fatigue loading can be used as an index to predict fatigue life. However, the frequency of fatigue loading on the wind turbine blades is low, the non-adiabatic response under low frequency fatigue loading would lead to temperature dissipation. In this paper, fatigue life prediction under low frequency fatigue loading was studied. Based on the law of energy conservation and the laws of heat conduction, heat convection, heat radiation, the temperature evolution of materials under low frequency fatigue loading was theoretically analyzed. Epoxy resin was selected as testing material and fatigue tests were conducted on epoxy resin specimens. During the fatigue test, the infrared thermal imager was used to monitor the samples surface temperature in real-time. The results show that the predicted life considering temperature dissipation effect is closer to the real life. Meanwhile, the general application of life prediction model is further verified by metal material. This work can be used for predicting the fatigue life of wind turbine blades under low frequency.
{"title":"Determination of fatigue life under low frequency fatigue loading based on temperature evolution","authors":"Peng Zhang, Yu Zhang, Yuhan Guo, Shuang Yao","doi":"10.1016/j.ocecoaman.2024.107491","DOIUrl":"10.1016/j.ocecoaman.2024.107491","url":null,"abstract":"<div><div>The wind turbine blades are key components of wind turbines. During the working process, the blades are subjected to fatigue loading, resulting in the failure of wind turbine blades. The surface temperature of blade materials will change when subjected to fatigue loading and the temperature rise rate of blade surface under fatigue loading can be used as an index to predict fatigue life. However, the frequency of fatigue loading on the wind turbine blades is low, the non-adiabatic response under low frequency fatigue loading would lead to temperature dissipation. In this paper, fatigue life prediction under low frequency fatigue loading was studied. Based on the law of energy conservation and the laws of heat conduction, heat convection, heat radiation, the temperature evolution of materials under low frequency fatigue loading was theoretically analyzed. Epoxy resin was selected as testing material and fatigue tests were conducted on epoxy resin specimens. During the fatigue test, the infrared thermal imager was used to monitor the samples surface temperature in real-time. The results show that the predicted life considering temperature dissipation effect is closer to the real life. Meanwhile, the general application of life prediction model is further verified by metal material. This work can be used for predicting the fatigue life of wind turbine blades under low frequency.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"260 ","pages":"Article 107491"},"PeriodicalIF":4.8,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720236","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}
Recreational fisheries represent a pivotal leisure industry in most countries with coastlines, making substantial contributions to economic growth and social welfare. Spatial spillover effects remain less well explored in the existing research on the sustainability of recreational fisheries. In this study, we develop a framework to assess the sustainability of recreational fisheries across the coast of China from 2010 to 2019. We examine the driving factors and mechanisms sustaining recreational fisheries using a spatial Durbin model. The results reveal an overall upward trend in the sustainability index of China's coastal recreational fisheries, with several notable regional differences. Furthermore, we found that recreational fishery sustainability exhibited spatial dependency across coastal provinces. The sustainability was influenced by both local factors and spillover effects from neighboring regions. The local factors ranked in order by direct effect coefficients from highest to lowest were consumption capability, travel convenience, policy, fishery management, urbanization, and environment. Indirect effect coefficients indicated that the degree of travel convenience and fishery development of neighboring regions had positive spillover effects, whereas consumption capability and tourism had negative effects. These findings offer new insights into the mechanisms influencing recreational fishery sustainability, information that is vital for effective coastal management and the sustainable development of recreational fisheries.
{"title":"Understanding the influencing factors affecting the sustainability of China's coastal recreational fisheries: A spatial spillover perspective","authors":"Guiying Chen , Zhengyong Yang , Qilei Zhao , Xinjun Chen","doi":"10.1016/j.ocecoaman.2024.107487","DOIUrl":"10.1016/j.ocecoaman.2024.107487","url":null,"abstract":"<div><div>Recreational fisheries represent a pivotal leisure industry in most countries with coastlines, making substantial contributions to economic growth and social welfare. Spatial spillover effects remain less well explored in the existing research on the sustainability of recreational fisheries. In this study, we develop a framework to assess the sustainability of recreational fisheries across the coast of China from 2010 to 2019. We examine the driving factors and mechanisms sustaining recreational fisheries using a spatial Durbin model. The results reveal an overall upward trend in the sustainability index of China's coastal recreational fisheries, with several notable regional differences. Furthermore, we found that recreational fishery sustainability exhibited spatial dependency across coastal provinces. The sustainability was influenced by both local factors and spillover effects from neighboring regions. The local factors ranked in order by direct effect coefficients from highest to lowest were consumption capability, travel convenience, policy, fishery management, urbanization, and environment. Indirect effect coefficients indicated that the degree of travel convenience and fishery development of neighboring regions had positive spillover effects, whereas consumption capability and tourism had negative effects. These findings offer new insights into the mechanisms influencing recreational fishery sustainability, information that is vital for effective coastal management and the sustainable development of recreational fisheries.</div></div>","PeriodicalId":54698,"journal":{"name":"Ocean & Coastal Management","volume":"260 ","pages":"Article 107487"},"PeriodicalIF":4.8,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142720134","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}
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