Journal of Sea Research最新文献_第6页

Structural optimization of new media communication culture industry on the impact of digital innovation on marine economic growth 新媒体传播文化产业结构优化对数字创新对海洋经济增长的影响

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-03-12 DOI: 10.1016/j.seares.2024.102491

Jiao Li, Jialin Jin

{"title":"Structural optimization of new media communication culture industry on the impact of digital innovation on marine economic growth","authors":"Jiao Li, Jialin Jin","doi":"10.1016/j.seares.2024.102491","DOIUrl":"10.1016/j.seares.2024.102491","url":null,"abstract":"<div><p>This study investigates the impact of digital innovation on the growth of the marine economy by optimizing the structure of the new media communication culture industry. Through the simulation of the particle swarm optimization (PSO) and Back Propagation (BP) computational network model, the Gross Domestic Production (GDP) of the marine economic zone is predicted, and the prediction effect of the PSO-BP computational network model on multivariate spatiotemporal transitions is further verified. The results show that the PSO-BP model has less prediction variance and a better fit than the BP model. The analysis of the joint prediction model reveals that there are differences in the publicity effects of different self-media modes in various types of sea areas. In terms of the economic peak of the overall data, Bilibili has the best publicity effect, followed by WeChat, Weibo, and Shake. The results show that the trend of macroeconomic indicators and the size of values in different regions affect the prediction effect. Region A has a higher annual average rate of change of macroeconomic indicators and has a better prediction effect. Region B has a faster macroeconomic development and has a more fluctuating prediction effect. Regions C and D have their advantages and disadvantages of the prediction effect under the self-media model.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000248/pdfft?md5=80883d336a37f3e1020e51b4dbeb7786&pid=1-s2.0-S1385110124000248-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140127710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term response of plankton assemblage to differentiated nutrient reductions in Laizhou Bay, China 中国莱州湾浮游生物群对不同营养物质减少的长期响应

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-03-11 DOI: 10.1016/j.seares.2024.102490

Huichao Jiang , Jianlong He , Ling Cheng , Ning Liu , Ping Fu , Ning Wang , Xiaoyu Jiang , Shan Sun , Juan Zhang

{"title":"Long-term response of plankton assemblage to differentiated nutrient reductions in Laizhou Bay, China","authors":"Huichao Jiang , Jianlong He , Ling Cheng , Ning Liu , Ping Fu , Ning Wang , Xiaoyu Jiang , Shan Sun , Juan Zhang","doi":"10.1016/j.seares.2024.102490","DOIUrl":"https://doi.org/10.1016/j.seares.2024.102490","url":null,"abstract":"<div><p>Nutrient reductions are considered effective methods to control eutrophication; however, our understanding of how plankton assemblages respond to nutrient reductions is limited. In the present study, we used a long-term dataset between 2004 and 2018 from Laizhou Bay, China, to describe the main characteristics of plankton assemblage response to nutrient reduction, and to compare the differences in plankton response between the different nutrient reduction regions. The results showed that plankton abundance showed obvious decreasing trends in response to nutrient reductions. The phytoplankton abundance decline rate was directly proportional to the magnitude of nutrient reductions. The large-scale shellfish culture may disrupt the response of mesozooplankton to nutrient reductions. Positive recovery signs in the plankton community were observed with species dominance decreasing for small individuals and increasing for large ones. The results suggested that the reduction in nitrogen and phosphorus positively affected plankton abundance and community recovery in Laizhou Bay.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000236/pdfft?md5=936d2baeb515e8424b15d65a92e834ff&pid=1-s2.0-S1385110124000236-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140123020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The coupling relationship between marine industry agglomeration and ecological environment system from the perspective of ecological environment 从生态环境角度看海洋产业集聚与生态环境系统的耦合关系

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-03-07 DOI: 10.1016/j.seares.2024.102485

Huang Yang, Xiaoxue Zhao

{"title":"The coupling relationship between marine industry agglomeration and ecological environment system from the perspective of ecological environment","authors":"Huang Yang, Xiaoxue Zhao","doi":"10.1016/j.seares.2024.102485","DOIUrl":"10.1016/j.seares.2024.102485","url":null,"abstract":"<div><p>To analyze the coupling relationship in marine industry agglomeration and ecological environment system, this study used the formula of location entropy coefficient for measuring the development agglomeration status of marine industry. Meanwhile, it also separately measures the degree of agglomeration of the primary, secondary, and tertiary industries in the ocean to reveal their degree of agglomeration in the region. In addition, a coupled correlation analysis model was designed. It uses grey relational analysis to reveal the relationships between data series in situations of insufficient data. Finally, a coupled coordination evaluation model was proposed. It evaluates the coupling status between the marine industry cluster and the ecological environment by calculating the capacity coupling coefficient, coupling degree, and coupling co scheduling. The results show that from 2013 to 2022, the agglomeration trend of the marine industry in Jiaodong Peninsula Province has undergone different changes. The location entropy coefficient of the primary industry increased from 1.3047 to 1.0987, while the location entropy coefficient of the secondary industry gradually increased from 0.2486 to 1.1141. The coupling coordination degree R between the marine industry agglomeration system and the ecological environment system has increased from 0.3986 to 0.6253. From 2018 to 2022, the coupling between the marine industry and ecological environment development has increased, gradually moving towards stability and coordination. This indicates that over the past decade, the development of the marine industry in Jiaodong Peninsula Province has placed greater emphasis on ecological protection, and has formed a positive interaction, promoting the coordinated development.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000182/pdfft?md5=3eedb145e32a482c6bae4c65e48826fe&pid=1-s2.0-S1385110124000182-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research on the environmental benefits of marine tidal energy and its impact on regional economic structure 研究海洋潮汐能的环境效益及其对区域经济结构的影响

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-03-06 DOI: 10.1016/j.seares.2024.102489

Kuan , Jing Zhang , Tao Liu

{"title":"Research on the environmental benefits of marine tidal energy and its impact on regional economic structure","authors":"Kuan , Jing Zhang , Tao Liu","doi":"10.1016/j.seares.2024.102489","DOIUrl":"10.1016/j.seares.2024.102489","url":null,"abstract":"<div><p>Tidal power generation, being one of the earliest and largest developed new energy technologies, has evolved into a mature and increasingly competitive source of energy. This article delves into the evaluation of tidal energy's socioeconomic impact, establishing a connection between its environmental benefits and regional economic development. The focus is on marine economic efficiency, and the super-efficiency DEA model is employed to gauge this efficiency. The study conducts a thorough analysis of the green ocean economic efficiency in three major regions, introducing the Malmquist efficiency index for a comprehensive understanding of changing trends. Utilizing an economic effect model, the research explores the contribution of tidal energy development to regional economic growth, delving into industry-related effects. Through these analyses, we aim to provide a clearer and more comprehensive insight into the positive influence of tidal energy on regional socioeconomics. This understanding is pivotal for guiding sustainable tidal energy development and formulating relevant policies.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000224/pdfft?md5=969ceede803e810662be0f244598a5d4&pid=1-s2.0-S1385110124000224-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140092731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ripples of change: Assessing the impact of water resource tax reform pilot on the green growth of China's coastal cities 变革的涟漪：评估水资源税改革试点对中国沿海城市绿色增长的影响

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-03-01 DOI: 10.1016/j.seares.2024.102479

Simeng Qian

{"title":"Ripples of change: Assessing the impact of water resource tax reform pilot on the green growth of China's coastal cities","authors":"Simeng Qian","doi":"10.1016/j.seares.2024.102479","DOIUrl":"10.1016/j.seares.2024.102479","url":null,"abstract":"<div><p>Coastal cities, despite being close to expansive oceans, are still susceptible to water constraints. The water resource tax reform pilot has been instrumental in promoting water conservation and effective utilization, so contributing significantly to the green growth of the coastal cities where it has been implemented. Utilizing data from prefecture-level cities in China's coastal areas from 2007 to 2019 and adopting the Green Total Factor Productivity as a measure of green growth, this study is dedicated to exploring the impact of water resources tax reform on the green growth of coastal cities. It treats the water resource tax reform pilot as a quasi-natural experiment and utilizes multi-period DID and PSM-DID methodologies to examine the effects of this reform on Green Total Factor Productivity. The findings indicate that the water resource tax reform pilot has made a significant contribution to green growth, primarily by reducing water consumption and enhancing governmental focus on marine environmental regulation. Expanding upon these findings, the article provides suggestions in several domains like the establishment of distinct tax rates, allocation of tax money, government oversight, and implementation of taxes on agricultural water resources. These findings can serve as a scientific benchmark for the development and execution of water resource tax policies in other areas.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000121/pdfft?md5=f8775489ca6515010f00dc543294527d&pid=1-s2.0-S1385110124000121-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140037119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of the coupling relationship between marine industry and regional development on the marine economy 海洋产业与区域发展之间的耦合关系对海洋经济的影响

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-02-23 DOI: 10.1016/j.seares.2024.102486

Yafei Zhang

{"title":"Impact of the coupling relationship between marine industry and regional development on the marine economy","authors":"Yafei Zhang","doi":"10.1016/j.seares.2024.102486","DOIUrl":"10.1016/j.seares.2024.102486","url":null,"abstract":"<div><p>To investigate the relationship between the marine industry and regional development, and assess its impact on the marine economy. The study creates an evaluation index system for the coupling relationship between the marine economy and regional development. It applies coupling theory and combines the hierarchical analysis method with the entropy weight method to determine the weight of each index. By constructing the coupling degree and coupling coordination degree model, this paper quantitatively analyzes the coupling relationship and applies the coefficient of variation to assess the coordinated development differences between different regions. The study utilized data from the official China Marine Statistical Yearbook. The analysis revealed an upward trend in the coupling degree of the marine economy and regional development during the study period, increasing from 0.58 to 0.72. This indicated a significant strengthening of the interaction and synergistic development between the two. In typical coastal areas, the coupling degree increased from 0.62 to 0.78, indicating the significant contribution of the marine industry to the region's comprehensive economic development. The study proposes policy recommendations to enhance the adjustment of the marine industrial structure and technological innovation, promote inter-regional cooperation and resource sharing, and strengthen marine environmental protection and sustainable resource utilization. These measures aim to promote the development of the marine economy while safeguarding marine resources.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000194/pdfft?md5=84063ee0a462390620f0f67a01b1c96d&pid=1-s2.0-S1385110124000194-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139954774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of high temperature heat waves on ocean carbon sinks: Based on literature analysis perspective 高温热浪对海洋碳汇的影响：基于文献分析的视角

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-02-23 DOI: 10.1016/j.seares.2024.102487

Hua Li , Jing Lu , Helong Tong , Yijun Liu

{"title":"Impact of high temperature heat waves on ocean carbon sinks: Based on literature analysis perspective","authors":"Hua Li , Jing Lu , Helong Tong , Yijun Liu","doi":"10.1016/j.seares.2024.102487","DOIUrl":"10.1016/j.seares.2024.102487","url":null,"abstract":"<div><p>The Earth's oceans serve as vast heat storage reservoirs and the ocean currents, forming a heat transfer zone, act as a buffer for climate change. The oceans play a crucial role in the water cycle, carbon cycle, and nitrogen cycle, interacting with the atmosphere. However, the increasing occurrence of heatwaves in recent years has disrupted the stability of the oceans and affected their function as a global thermostat. This paper examines relevant literature from the Web of Science database spanning from 1996 to 2023. Our analysis reveals the evolving research hotspots regarding the impact of heatwaves on ocean carbon sinks, progressing from “carbon dioxide - carbon emissions - ocean - seawater - organic matter - marine sediment” over the past decades. Keyword frequency and centrality analysis indicate a deepening focus in this field of study. The research areas primarily revolve around climate change, carbon dioxide, ocean variability, the influence of high temperatures on the carbon cycle, the weakening of the ocean carbon sink function, and ocean temperature. This study summarizes research findings on the mechanisms by which high temperature heatwaves affect ocean carbon sinks, alterations in ocean carbon cycle patterns, their impacts on marine ecosystems, and factors influencing seawater temperature and heatwave occurrence. Finally, the paper discusses novel findings in this field and proposes countermeasures to enhance ocean sink capacity amidst the warming trend.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000200/pdfft?md5=0a82fc99dc59364d67b3fb45c0bd62ba&pid=1-s2.0-S1385110124000200-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139954776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of a new composite underwater hull cleaning robot 设计新型复合材料水下船体清洁机器人

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-02-23 DOI: 10.1016/j.seares.2024.102488

Kaishan Wei, Zhaoqin Zhang, Zhifan Zhou

引用次数: 0

Argo data anomaly detection based on transformer and Fourier transform 基于变压器和傅立叶变换的 Argo 数据异常检测

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-02-08 DOI: 10.1016/j.seares.2024.102483

Longkai Sui, Yongguo Jiang

{"title":"Argo data anomaly detection based on transformer and Fourier transform","authors":"Longkai Sui, Yongguo Jiang","doi":"10.1016/j.seares.2024.102483","DOIUrl":"10.1016/j.seares.2024.102483","url":null,"abstract":"<div><p>Argo data is multidimensional observational data from ocean floats, which has long been plagued by data anomalies. Currently, the anomaly detection problem in Argo data still faces many challenges, as anomalies may involve complex relationships between multiple variables, leading to suboptimal performance with traditional machine learning methods. Thanks to the advancement of deep learning, it has become the predominant methodology for anomaly detection, demonstrating notable performance. The Transformer model has shown significant potential in the field of data anomaly detection, with its core Self-Attention mechanism capable of learning relationships between variables. We introduce Fast Fourier Transform (FFT) into the Transformer model, enabling the model to better capture periodic patterns and complex relationships in multivariate data, learning normal data patterns to improve the method for Argo data anomaly detection. Through experiments conducted on three public datasets and the Argo dataset, the enhanced model outperforms the original model in terms of performance. This also demonstrates the potential of FFT in multidimensional data anomaly detection, providing new insights into addressing anomaly detection challenges in real-world complex datasets.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000169/pdfft?md5=10dfe2080220941d1d1072a73d8fa08a&pid=1-s2.0-S1385110124000169-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139872216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study of the cyclonic eddy shedding phenomenon in the Agulhas Return Current 阿古哈斯回流中的气旋涡降现象研究

IF 2 4区地球科学

Journal of Sea Research Pub Date : 2024-02-07 DOI: 10.1016/j.seares.2024.102481

Xiaoqi Ding , Haibin Lü , Yulin Zhu , Liqiong Zhang , Yaoyao Zhou , Linfei Bai

{"title":"A study of the cyclonic eddy shedding phenomenon in the Agulhas Return Current","authors":"Xiaoqi Ding , Haibin Lü , Yulin Zhu , Liqiong Zhang , Yaoyao Zhou , Linfei Bai","doi":"10.1016/j.seares.2024.102481","DOIUrl":"https://doi.org/10.1016/j.seares.2024.102481","url":null,"abstract":"<div><p>The detachment of the cyclonic eddy (CE) from the mainstream on the north side of the Agulhas Return Current (ARC) is first observed and analyzed with a multiparameter eddy dataset and eddy detection technique. It is found that there exists a special form (ACA) of two anticyclonic eddies (AE) sandwiching a cyclonic eddy (CE). The cyclonic eddy is then locally shed from the jet and shifts to the west before finally being recaptured by the mainstream. From observations, cyclonic eddy detachments in ACA form can be classified into two categories based on the detachment mode and on the sea surface height (SSH) data. Using reanalysis data, satellite observation data and Argo data, the analysis reveals that the positional relationship between the anticyclonic eddies and cyclonic eddy affects the detachment type. In addition, the existence of the ARC itself, with its giant meandering morphology and dissipative effect, also provides conditions for the detachment of the cyclonic eddy.</p></div>","PeriodicalId":50056,"journal":{"name":"Journal of Sea Research","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1385110124000145/pdfft?md5=a1491d6bfcbd74ee1a114e911cf90634&pid=1-s2.0-S1385110124000145-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139714662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0