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Research on the Deployment of Professional Rescue Ships for Maritime Traffic Safety under Limited Conditions J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-17 Minghui Shao, Biao Wu, Yan Li, Xiaoli Jiang
This paper focuses on optimizing the deployment plan for standby points of professional rescue vessels based on the data of maritime incidents in the Beihai area of China. The primary objective is to achieve multi-level and multiple coverage of the jurisdictional waters of the Beihai Rescue Bureau. Models including the coverage quality of the jurisdictional waters, the coverage quality in high-risk
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Experimental Study on the Effect of Wind on Armor Stone Stability J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-18 Young-Min Kim, Jae-Ho Lim, Hyun-Doug Yoon
Wind is a significant factor influencing the stability of breakwater armor stones. However, few existing studies have considered the effects of wind on these structures. In this study, two-dimensional laboratory experiments were conducted to examine the effect of wind on the stability of breakwater armor stones. The stability factor (KD) of the armor stone, fluid velocity, runup, and rundown were observed
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A Fault-Tolerant Control Method Based on Reconfiguration SPWM Signal for Cascaded Multilevel IGBT-Based Propulsion in Electric Ships J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-18 Fan Zhang, Zhiwei Zhang, Zhonglin Zhang, Tianzhen Wang, Jingang Han, Yassine Amirat
Electric ships have been developed in recent years to reduce greenhouse gas emissions. In this system, inverters are the key equipment for the permanent-magnet synchronous motor (PMSM) drive system. The cascaded insulated-gated bipolar transistor (IGBT)-based H-bridge inverter is one of the most attractive multilevel topologies for modern electric ship applications. Usually, the fault-tolerant control
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Laboratory Investigations of Iceberg Melting under Wave Conditions in Sea Water J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-18 Aleksey Marchenko, Nataliya Marchenko
Changes in the masses of icebergs due to deterioration processes affect the drift of icebergs and should be taken into account when assessing iceberg risks in the areas of offshore development. In 2022 and 2023, eight laboratory experiments were carried out in the wave tank of the University Centre in Svalbard to study the melting of icebergs in sea water under calm and rough conditions. In the experiments
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Control Optimization Method for Ship Direct Current Microgrid Based on Impedance Reshaping J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-18 Weiqiang Liao, Xin Dong, Rongfeng Yang, Zhongfei Qiao
In response to the constant power negative impedance characteristics on the load side of a ship DC microgrid, leading to voltage oscillation issues in the DC bus, this paper proposes a control optimization method based on impedance reshaping using bus voltage feedback. First, a simplified small-signal diagram of a lithium battery energy storage system converter is analyzed. Combining active damping
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IRNLGD: An Edge Detection Algorithm with Comprehensive Gradient Directions for Tidal Stream Turbine J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-17 Dingnan Song, Ran Liu, Zhiwei Zhang, Dingding Yang, Tianzhen Wang
Tidal stream turbines (TSTs) harness the kinetic energy of tides to generate electricity by rotating the rotor. Biofouling will lead to an imbalance between the blades, resulting in imbalanced torque and voltage across the windings, ultimately polluting the grid. Therefore, rotor condition monitoring is of great significance for the stable operation of the system. Image-based attachment detection algorithms
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Analysis of the Swordfish Xiphias gladius Linnaeus, 1758 Catches by the Pelagic Longline Fleets in the Eastern Pacific Ocean J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-16 Luis Adán Félix-Salazar, Emigdio Marín-Enríquez, Eugenio Alberto Aragón-Noriega, Jorge Saul Ramirez-Perez
During the last 50 years, the increase in the efforts of the longline fleet in the Eastern Pacific Ocean (EPO) resulted in an increase in the capture of the swordfish Xiphias gladius. We analyzed a historical database of swordfish catches (1980–2020) reported by the industrial longline fleet to the Inter-American Tuna Tropical Commission (IATTC), which contains catch and effort data aggregated in monthly
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An Improved Reeds–Shepp and Distributed Auction Algorithm for Task Allocation in Multi-AUV System with Both Specific Positional and Directional Requirements J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Hongfei Li, Daqi Zhu, Mingzhi Chen, Tong Wang, Hongxiu Zhu
Task assignment is of paramount importance in multi-AUV systems, particularly in applications such as bridge inspection where task execution is direction-specific. In such scenarios, the underactuation of AUVs is a critical factor that cannot be ignored. Therefore, it is essential to consider the AUV’s kinematic model comprehensively to ensure minimal energy consumption during task execution. In this
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Robust Fish Recognition Using Foundation Models toward Automatic Fish Resource Management J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Tatsuhito Hasegawa, Daichi Nakano
Resource management for fisheries plays a pivotal role in fostering a sustainable fisheries industry. In Japan, resource surveys rely on manual measurements by staff, incurring high costs and limitations on the number of feasible measurements. This study endeavors to revolutionize resource surveys by implementing image-recognition technology. Our methodology involves developing a system that detects
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Review on the Hydro- and Thermo-Dynamic Wakes of Underwater Vehicles in Linearly Stratified Fluid J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-15 Liushuai Cao, Yanyan Pan, Gang Gao, Linjie Li, Decheng Wan
Wakes produced by underwater vehicles, particularly submarines, in density-stratified fluids play a pivotal role across military, academic, and engineering domains. In comparison to homogeneous fluid environments, wakes in stratified flows exhibit distinctive phenomena, including upstream blocking, pancake eddies, internal waves, and variations in hydrodynamic performance. These phenomena are crucial
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Variable Natural Frequency Damper for Minimizing Response of Offshore Wind Turbine: Effect on Dynamic Response According to Inner Water Level J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-15 Dong-Ju Kim, Young-Suk You, Min-Young Sun
Offshore wind turbines (OWTs) are exposed to cyclic loads resulting from wind, waves, and rotor rotation. These loads can induce resonance, thereby significantly increasing the amplitude of the structure and accelerating the accumulation of fatigue damage. Particularly, wave loads can induce the first mode of large turbines. While many studies have been conducted to suppress OWT vibrations due to external
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A Prescriptive Model for Failure Analysis in Ship Machinery Monitoring Using Generative Adversarial Networks J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-15 Baris Yigin, Metin Celik
In recent years, advanced methods and smart solutions have been investigated for the safe, secure, and environmentally friendly operation of ships. Since data acquisition capabilities have improved, data processing has become of great importance for ship operators. In this study, we introduce a novel approach to ship machinery monitoring, employing generative adversarial networks (GANs) augmented with
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Application of Regularized Meshless Method with Error Estimation Technique for Water–Wave Scattering by Multiple Cylinders J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-15 Kue-Hong Chen, Jeng-Hong Kao, Yi-Hui Hsu
In this manuscript, we will apply the regularized meshless method, coupled with an error estimation technique, to tackle the challenge of modeling oblique incident waves interacting with multiple cylinders. Given the impracticality of obtaining an exact solution in many real engineering problems, we introduce an error estimation technique designed to achieve reliable solutions. This technique excels
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Behavior Analysis of a Bucket Foundation with an Offshore Wind Turbine during the In-Water Sinking Process J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-15 Fangdi Ye, Jijian Lian, Tianrun Xiao, Dongzhi Xiong, Haijun Wang, Yaohua Guo, Nan Shao
To enhance the safety of the in-water sinking operation for an integrated system, including a bucket foundation (BF), tower, and rotor nacelle assembly (RNA), in complex marine environmental conditions, a model test of in-water sinking for an offshore wind turbine and bucket foundation (OWT–BF) is conducted. The motion behavior of the OWT–BF and the sling tensions during the in-water sinking process
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Oil Spill Classification Using an Autoencoder and Hyperspectral Technology J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-15 María Gema Carrasco-García, María Inmaculada Rodríguez-García, Juan Jesús Ruíz-Aguilar, Lipika Deka, David Elizondo, Ignacio José Turias Domínguez
Hyperspectral technology has been playing a leading role in monitoring oil spills in marine environments, which is an issue of international concern. In the case of monitoring oil spills in local areas, hyperspectral technology of small dimensions is the ideal solution. This research explores the use of encoded hyperspectral signatures to develop automated classifiers capable of discriminating between
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uw-WiFi: Small-Scale Data Collection Network-Based Underwater Internet of Things J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-13 Jifeng Zhu, Xiaohe Pan, Zheng Peng, Mengzhuo Liu, Jingqian Guo, Jun-Hong Cui
The establishment of the Underwater Internet of Things (UIoT) and the realization of interconnection between heterogeneous underwater intelligent devices are urgent global challenges. Underwater acoustic networking is the most suitable technology to achieve UIoT for medium to long ranges. This paper presents an underwater Wi-Fi network, called uw-WiFi, that utilizes a master–slave mode architecture
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A Spatial Correlation Identification Model for Coherent Structure Extraction and Three-Dimensional Visualization J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Beibei Mao, Hua Yang, Fei Sun, Ying Zhang, Xinrui Zhang
Multi-scale coherent structures have been observed in ocean currents, which are induced by the interaction of shear flows with different velocities. Understanding the spatial configuration and scale characteristics of coherent structures will promote the explanation of physical ocean phenomena. Considering the self-similarity, we propose a spatial correlation identification model for coherent structure
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Correction: Jung, W.; Chang, D. Deep Reinforcement Learning-Based Energy Management for Liquid Hydrogen-Fueled Hybrid Electric Ship Propulsion System. J. Mar. Sci. Eng. 2023, 11, 2007 J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Wongwan Jung, Daejun Chang
In the original publication [...]
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Ship Global Traveling Path Optimization via a Novel Non-Dominated Sorting Genetic Algorithm J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Shuling Zhao, Sishuo Zhao
Due to the intensification of economic globalization and the impact of global warming, the development of methods to reduce shipping costs and reduce carbon emissions has become crucial. In this study, a multi-objective optimization algorithm was designed to plan the optimal ship route for safe cross-ocean navigation under complex sea conditions. Based on the traditional non-dominated sorting genetic
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Using Benthic Indices to Assess the Ecological Quality of Sandy Beaches and the Impact of Urbanisation on Sandy Beach Ecosystems J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Jian Liang, Meng-Yuan Shu, Hai-Rui Huang, Chae-Woo Ma, Seon-Kyu Kim
As the global population continues to grow, sandy beaches, one of the most valuable ecosystems, have been widely impacted by human activities. Therefore, to develop policies for the conservation and management of sandy beaches, the impact of human activities on sandy beaches must be accurately assessed. We used seven benthic indices to evaluate the ecological quality of sandy beaches in Anmyeon Island
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Bio-Inspired Cooperative Control Scheme of Obstacle Avoidance for UUV Swarm J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-14 Zhao Wang, Hongjian Wang, Jianya Yuan, Dan Yu, Kai Zhang, Jingfei Ren
The complex underwater environment poses significant challenges for unmanned underwater vehicles (UUVs), particularly in terms of communication constraints and the need for precise cooperative obstacle avoidance and trajectory tracking. Addressing these challenges solely through position information is crucial in this field. This study explores the intricate task of managing a group of UUVs as they
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Characterization of the Structural–Stratigraphic and Reservoir Controls on the Occurrence of Gas Hydrates in the Eileen Gas Hydrate Trend, Alaska North Slope J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-10 Margarita Zyrianova, Timothy Collett, Ray Boswell
One of the most studied permafrost-associated gas hydrate accumulations in Arctic Alaska is the Eileen Gas Hydrate Trend. This study provides a detailed re-examination of the Eileen Gas Hydrate Trend with a focus on the gas hydrate accumulation in the western part of the Prudhoe Bay Unit. This integrated analysis of downhole well log data and published geophysical data has provided new insight on structural
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Underwater Sound Speed Field Forecasting Based on the Least Square Support Vector Machine J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-13 Junting Wang, Tianhe Xu, Wei Huang, Liping Zhang, Jianxu Shu, Yangfan Liu, Linyang Li
Underwater sound speed is one of the most significant factors that affects high-accuracy underwater acoustic positioning and navigation. Due to its complex temporal variation, the forecasting of the underwater sound speed field (SSF) becomes a challenging task. Taking advantage of machine learning methods, we propose a new method for SSF forecasting based on the least square support vector machine
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Measuring the Robustness of Optimal Design Solutions for Wave Energy Converters via a Stochastic Approach J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-13 Filippo Giorcelli, Sergej Antonello Sirigu, Giuseppe Giorgi, Nicolás Faedo, Mauro Bonfanti, Jacopo Ramello, Ermanno Giorcelli, Giuliana Mattiazzo
Among the challenges generated by the global climate crisis, a significant concern is the constant increase in energy demand. This leads to the need to ensure that any novel energy systems are not only renewable but also reliable in their performance. A viable solution to increase the available renewable energy mix involves tapping into the potential available in ocean waves and harvesting it via so-called
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Changes in Sea Level along the South China Sea Coast Based on the Homogenized Tide Gauge Data J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-12 Yan Li, Lin Mu, Dawei You, Jiaying Wang, Qianru Niu, Xiaomei Liao
To estimate the changes in the annual mean sea level (MSL) and extreme sea levels (ESLs), the largest collection of tide gauge records from 10 tidal stations along the northern coast of the South China Sea (SCS) were analyzed in this study. Here, all the tide gauge records had been homogenized by a two-step process involving the detection of inhomogeneities, that is, breakpoints caused by non-climatic
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The Potential of Tidal Energy Production in a Narrow Channel: The Gulf of Morbihan J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-12 Jérôme Thiébot, Mouncef Sedrati, Sylvain Guillou
The tidal currents of the Gulf of Morbihan reach up to 3.5 m/s within a narrow (200 m large) channel connecting the sea to the inner part of the gulf. In this study, a Telemac2D model validated with a large dataset of field measurements is used to assess the resources of the gulf. The results show that two sites have the potential to host up to 48 turbines (diameter of 8 m). If the entire width of
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Anti-Windup Pitch Angle Control for Wind Turbines Based on Bounded Uncertainty and Disturbance Estimator J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-10 Xuguo Jiao, Guozhong Wang, Xin Wang, Zhenyong Zhang, Yanbing Tian, Xiwen Fan
Due to physical limitations and safety requirements, the rate and amplitude of change in wind turbines’ pitch angle are limited, which will bring integral saturation problems to the control system. This leads to the deterioration of the pitch control system’s performance or even an instability problem. This paper designs an anti-windup robust pitch angle control strategy to deal with pitch rate constraint
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Study of Cretaceous Provenance Tracing and Sedimentary Patterns in the Western Qiantang Sag, East China Sea Shelf Basin J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-10 Kailong Feng, Weilin Zhu, Xiaowei Fu, Kai Zhong, Shijie Zhao, Weizhen Chen, Zengyuan Zhou, Lichen Hu
The Qiantang Sag, as one of the East China Sea Shelf Basin’s sags with thick residual Mesozoic strata, has long lacked comprehensive foundational sedimentary research, significantly impeding the understanding of the region’s resource potential and geological history. This study focuses on the Cretaceous strata of the Qiantang Sag, proposing a multi-phase sedimentary model for the Cretaceous Period
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Trim and Engine Power Joint Optimization of a Ship Based on Minimum Energy Consumption over a Whole Voyage J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-10 Yanyun Yu, Hongshuo Zhang, Zongbao Mu, Yating Li, Yutong Sun, Jia Liu
Trim optimization is an available approach for the energy saving and emission reduction of a ship. As a ship sails on the water, the draft and trim undergo constant changes due to the consumption of fuel oil and other consumables. As a result, the selection of the initial trim is important if ballasting or shifting liquid among the tanks is not considered during a voyage. According to the characteristics
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A Method for Coastal Global Route Planning of Unmanned Ships Based on Human-like Thinking J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-10 Gang Wang, Jingheng Wang, Xiaoyuan Wang, Quanzheng Wang, Junyan Han, Longfei Chen, Kai Feng
Global route planning has garnered global scholarly attention as a crucial technology for ensuring the safe navigation of intelligent ships. The comprehensive influence of time-varying factors such as water depth, prohibited areas, navigational tracks, and traffic separation scheme (TSS) on ship navigation in coastal global route planning has not been fully considered in existing research, and the
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An Optimal-Path-Planning Method for Unmanned Surface Vehicles Based on a Novel Group Intelligence Algorithm J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-11 Shitu Chen, Ling Feng, Xuteng Bao, Zhe Jiang, Bowen Xing, Jingxiang Xu
Path planning is crucial for unmanned surface vehicles (USVs) to navigate and avoid obstacles efficiently. This study evaluates and contrasts various USV path-planning algorithms, focusing on their effectiveness in dynamic obstacle avoidance, resistance to water currents, and path smoothness. Meanwhile, this research introduces a novel collective intelligence algorithm tailored for two-dimensional
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Hydrodynamic Modeling of Water Renewal Time and Potential Dissolved Matter Using TELEMAC: Applications to Shediac Bay (New Brunswick, Canada) J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-07 Chinh Lieou, Serge Jolicoeur, Thomas Guyondet, Stéphane O’Carroll, Tri Nguyen-Quang
This study examines the hydrodynamic regimes in Shediac Bay, located in New Brunswick, Canada, with a focus on the breach in the Grande-Digue sand spit. The breach, which was developed in the mid-1980s, has raised concerns about its potential impacts on water renewal time and water quality in the inner bay. The aims of this study, using mathematical modeling approaches, were to evaluate the flow regimes
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Early Diagenetic Processes in the Sediments of the Krka River Estuary J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-08 Nuša Cukrov, Neven Cukrov, Dario Omanović
To study the processes that govern the post-depositional mobility of metals in the estuarine sediment, five sediment cores were sampled in the Krka River estuary (Croatia). The obtained concentration ranges in the pore water were 0.057–49.7 μM for Fe, 0.310–100 μM for Mn, 0.068–26.8 nM for Co, 0.126–153 nM for Cu, 11.5–2793 nM for Zn, 0.222–31.3 nM for Pb, 4.09–59.4 nM for U, 38.8–2228 nM for Mo, and
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Sample Augmentation Method for Side-Scan Sonar Underwater Target Images Based on CBL-sinGAN J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-08 Chengyang Peng, Shaohua Jin, Gang Bian, Yang Cui, Meina Wang
The scarcity and difficulty in acquiring Side-scan sonar target images limit the application of deep learning algorithms in Side-scan sonar target detection. At present, there are few amplification methods for Side-scan sonar images, and the amplification image quality is not ideal, which is not suitable for the characteristics of Side-scan sonar images. Addressing the current shortage of sample augmentation
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Centrifuge Modelling of Composite Bucket Foundation Breakwater in Clay under Monotonic and Cyclic Loads J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-09 Minmin Jiang, Zhao Lu, Zhengyin Cai, Guangming Xu
This study investigates the monotonic and cyclic performance of composite bucket foundation breakwater in clay through centrifuge modeling. The application of monotonic loads simulates extreme wave conditions, and cyclic load corresponds to long-term serviceability conditions. In centrifuge tests, three typical soil strengths were tested, and two load eccentricities were simulated to check the influence
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Mangroves as Coastal Protection for Restoring Low-Energy Waterfront Property J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-09 Robert J. Weaver, Abigail L. Stehno
Mangroves offer vital ecological advantages including air and water filtration, coastal and estuarine habitat provision, sediment stabilization, and wave energy dissipation. Their intricate root systems play a key role in safeguarding shorelines from tsunamis and erosive storms by dissipating wave energy. Moreover, mangroves shield against boat wakes and wind-waves, thus naturally bolstering shoreline
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Estimation of Temperature and Salinity from Marine Seismic Data—A Two-Step Approach J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-09 Dwaipayan Chakraborty, Subhashis Mallick
Ocean-water temperature and salinity are two vital properties that are required for weather-, climate-, and marine biology-related research. These properties are usually measured using disposable instruments at sparse locations, typically from tens to hundreds of kilometers apart. Laterally interpolating these sparse measurements provides smooth temperature and salinity distributions within the oceans
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Numerical Simulation of Construction Disturbances during Bidirectional Advancement of Undersea Large-Diameter Dual-Line Shield Tunneling J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-06 Tao Wang, Yu Xiang, Liyuan Liu, Wang Xiong
Relying on the Mawan undersea large-diameter, dual-line, mud–water-balanced shield tunnel project and focusing on the characteristics of the tunnel, such as the complex geological conditions at the expected intersection location and the existence of a superimposed perturbation or secondary perturbation effect, theoretical calculations and three-dimensional numerical simulations were used to reveal
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Application of ANN in Construction: Comprehensive Study on Identifying Optimal Modifier and Dosage for Stabilizing Marine Clay of Qingdao Coastal Region of China J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-08 Qirui Bo, Junwei Liu, Wenchang Shang, Ankit Garg, Xiaoru Jia, Kaiyue Sun
Nowadays, the use of new compound chemical stabilizers to treat marine clay has gained significant attention. However, the complex non-linear relationship between the influencing factors and the unconfined compressive strength of chemically treated marine clay is not clear. In order to study the influence of various factors (dosage, type of stabilizer, curing age) on the unconfined compressive strength
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Time Domain Vibration Analysis of an Ice Shelf J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-08 Rehab Aljabri, Michael H. Meylan
A method is presented to calculate the vibrations of an ice shelf floating in shallow water under different boundary conditions. One condition is that there is no flux, which reduces all calculations and the other is that there is no pressure at the seaward end of the ice shelf. The effect of these boundary conditions is investigated in detail, and the modes of vibration are also determined. Motion
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Long-Term Assessment of Morocco’s Offshore Wind Energy Potential Using ERA5 and IFREMER Wind Data J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-06 Younes Zekeik, Maria J. OrtizBevia, Francisco J. Alvarez-Garcia, Ali Haddi, Youness El Mourabit, Antonio RuizdeElvira
Offshore wind energy is a promising resource for renewable energy development. Reanalysed wind data are unmatched by other wind data sources in providing a long-term assessment of wind power potential. In this study, 10 of the selected offshore locations close to the Moroccan coast were used to evaluate the ERA5 wind reanalysis dataset against the IFREMER-blended observational dataset covering the
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Effects of Three Feed Additives in Low Fish Meal Diet on Growth, Antioxidant Capacity and Intestinal Microbiota of Penaeus monodon J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-07 Wanli Yang, Song Jiang, Qibin Yang, Jianhua Huang, Jianzhi Shi, Yundong Li, Yukai Yang, Falin Zhou
The effects of three feed additives in a low fish meal diet on growth, antioxidant capacity and intestinal microbiota of Penaeus monodon were studied to enhance the understanding of these effects and to provide basic data and a reference for the formulation and optimization of feed for P. monodon. A total of 630 healthy, homogenous shrimp (4.58 ± 0.05 g) were randomly divided into seven groups with
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Design and Experimental Study of 50 kW Ocean Thermal Energy Conversion Test Platform Based on Organic Rankine Cycle J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-07 Beichen Lu, Yanjun Liu, Xiaoyu Zhai, Li Zhang, Yun Chen
In recent years, clean and renewable energy sources have received much attention to balance the contradiction between resource needs and environmental sustainability. Among them, ocean thermal energy conversion (OTEC), which consists of surface warm seawater and deep cold seawater, can rely on thermal cycling to generate electricity and has great potential in alleviating the energy crisis. In this
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Wind-Powered Desalination on Islands: A Review of Energy–Water Pathways J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-07 Carlos Matos, Pedro Cabrera, José A. Carta, Noemi Melián-Martel
Water scarcity is a global problem that particularly affects islands located in arid regions or regions with limited water resources. This issue has prompted the development of non-conventional water sources such as fossil fuel-powered desalination systems. Concern about the high energy and environmental costs associated with this type of facility has created the ideal framework for the proliferation
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Pressure Analysis of Onshore and Offshore Shale Gas Reservoirs under Constant-Rate Condition Considering Thin Sandstone Layer and Interlayer Cross-Flow J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-06 Shiming Wei, Kaixuan Qiu
The extraction of shale gas from onshore and offshore shale gas reservoirs will play an important role in meeting China’s future energy needs, which will not only help alleviate the energy crisis but also contribute to climate change mitigation. As for the target shale formation enriched by thin sandstone layers in typical basins, an analytical calculation method is proposed to perform pressure analysis
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Underwater Terrain Matching Method Based on Pulse-Coupled Neural Network for Unmanned Underwater Vehicles J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-06 Pengyun Chen, Zhiru Li, Guangqing Liu, Ziyi Wang, Jiayu Chen, Shangyao Shi, Jian Shen, Lizhou Li
The positioning results of terrain matching in flat terrain areas will significantly deteriorate due to the influence of terrain nonlinearity and multibeam measurement noise. To tackle this problem, this study presents the Pulse-Coupled Neural Network (PCNN), which has been effectively utilized for image denoising. The interconnection of surface terrain data nodes is achieved through PCNN ignition
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Control System Design for Offshore Floating Platform Transportation by Combination of Towing and Pushing Tugboats J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-06 Thinh Huynh, Young-Bok Kim
This study investigates the automated transportation control problem of an offshore floating platform that has limited or no maneuverability. The proposed solution involves two tugboats pushing into the platform and two other tugs towing it in the opposite direction. By implementing cooperative control of these tugs, the desired planar motion of the platform is achieved. For this, the proposed control
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A Novel Vision-Based Outline Extraction Method for Hull Components in Shipbuilding J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-04 Hang Yu, Yixi Zhao, Chongben Ni, Jinhong Ding, Tao Zhang, Ran Zhang, Xintian Jiang
The diverse nature of hull components in shipbuilding has created a demand for intelligent robots capable of performing various tasks without pre-teaching or template-based programming. Visual perception of a target’s outline is crucial for path planning in robotic edge grinding and other processes. Providing the target’s outline from point cloud or image data is essential for autonomous programming
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Accurate Identification for CW Direct Signal in Underwater Acoustic Ranging J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-05 Jing Li, Jin Fu, Nan Zou
The underwater channel is bilateral, heterogeneous, uncertain, and exhibits multipath transmission, sound line curvature, etc. These properties complicate the structure of the received pulse, causing great challenges in direct signal identification for ranging purposes and impacts on back-end data processing, even accurate acoustic positioning. Machine learning (ML) combined with underwater acoustics
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Weak Fault Feature Extraction and Enhancement of Autonomous Underwater Vehicle Thrusters Based on Artificial Rabbits Optimization and Variational Mode Decomposition J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-05 Dacheng Yu, Mingjun Zhang, Feng Yao, Jitao Li
Variational Mode Decomposition (VMD) has typically been used in weak fault feature extraction in recent years. The problem analyzed in this study is weak fault feature extraction and the enhancement of AUV thrusters based on Artificial Rabbits Optimization (ARO) and VMD. First, we introduce ARO to solve the problem of long-running times when using VMD for weak fault feature extraction. Then, we propose
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Multi-Module Fusion Model for Submarine Pipeline Identification Based on YOLOv5 J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-03 Bochen Duan, Shengping Wang, Changlong Luo, Zhigao Chen
In recent years, the surge in marine activities has increased the frequency of submarine pipeline failures. Detecting and identifying the buried conditions of submarine pipelines has become critical. Sub-bottom profilers (SBPs) are widely employed for pipeline detection, yet manual data interpretation hampers efficiency. The present study proposes an automated detection method for submarine pipelines
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Study on Assessment of Collision Probability between Ship and Bridge Based on Automatic Identify System Data J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-03 Jin Pan, Yong Wang, Tao Wang, Mingcai Xu
With the development of bridge crossings over rivers, the accident of the vessel–bridge collision is increasing as well. It is important to assess probability of bridges colliding with passing ships. Firstly, the AIS (Automatic identify system) data was collected and decoded to obtain the dynamic information of the ships passing the bridge including the distributions of ships position, speed, and yaw
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The Influence of Refractive Index Changes in Water on Airborne LiDAR Bathymetric Errors J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-02-29 Xingyuan Xiao, Zhengkun Jiang, Wenxue Xu, Yadong Guo, Yanxiong Liu, Zhen Guo
Due to the limitations of measurement equipment and the influence of factors such as the environment and target, measurement errors may occur during the data acquisition process of airborne LiDAR bathymetry (ALB). The refractive index of water is defined as the propagation ratio of the speed of light waves in a vacuum to that in water; this ratio influences not only the propagation speed of the laser
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Point-to-Point-Based Optimization Method of Ballast Water Allocation for Revolving Floating Cranes with Experimental Verification J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-01 Xiaobang Wang, Yang Yu, Siyu Li, Jie Zhang, Zhijie Liu
The Revolving Floating Crane (RFC) is a specialized engineering vessel crucial for offshore lifting operations, such as offshore platform construction and deep-water salvaging. It boasts impressive lifting capacity, good adaptability to various environmental conditions, and high operational efficiency. Conventionally, the safety and stability of RFC operations heavily depend on manual ballast water
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Improving Water Quality in a Sea Bay by Connecting Rivers on Both Sides of a Harbor J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-01 Yuning Chi, Wenming Zhang, Yanling Liu, Xiaoyu Zhang, Wanqing Chi, Bing Shi
Improving water quality is imperative for many sea bays, including Laizhou Bay, China, to achieve sustainable marine development. In 2010, two 17.3 km long sand-retaining embankments were built in southwestern Laizhou Bay, which weakened the nearshore hydrodynamics and seriously impacted the water quality. To mitigate this issue, this study proposes connecting the two rivers on both sides of the embankments
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Research on Structural Collapse of a Containership under Combined Bending–Torsion by Oblique Waves J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-01 Weiqin Liu, Qilu Zou, Yaqiang Zhang, Yong Nie, Xuemin Song
Large waves cause a great number of collapsed-ship accidents, resulting in the loss of many lives and properties. It has been found that most of these collapses are caused by encountering oblique waves. As a result, the ship structure experiences a complex collapse under combined bending and torsion. This paper utilizes a numerical hydroelasto-plastic approach, coupling CFD (Computational Fluid Dynamics)
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Joint Inversion of Sea Surface Wind and Current Velocity Based on Sentinel-1 Synthetic Aperture Radar Observations J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-02 Jingbei Sun, Huimin Li, Wenming Lin, Yijun He
Spaceborne synthetic aperture radar (SAR) has been proven to be a useful technique for observing the sea surface wind and current over the open ocean given its all-weather data-gathering capability and high spatial resolution. In addition to the commonly used radar return magnitude quantified by normalized radar cross section (NRCS), the Doppler centroid anomaly (DCA) has added another dimension of
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Astronomical Time Scale of the Late Pleistocene in the Northern South China Sea Based on Carbonate Deposition Record J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-01 Chunhui Zhang, Wanyi Zhang, Chengjun Zhang, Liwei Zheng, Shiyi Yan, Yuanhao Ma, Wei Dang
Variations in solar insolation caused by changes in the Earth’s orbit—specifically its eccentricity, obliquity, and precession—can leave discernible marks on the geologic record. Astrochronology leverages these markers to establish a direct connection between chronological measurements and different facets of climate change as recorded in marine sediments. This approach offers a unique window into
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Examining the Impact of Long-Term Industrialization on the Trace Metal Contaminants Distribution in Seawater of the Pula Bay, Croatia J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-01 Ozren Grozdanić, Ana-Marija Cindrić, Iva Finderle, Dario Omanović
In this study, we examined for the first time the spatio-temporal distribution of trace metal (TM) contaminants (Zn, Cd, Pb, Cu, Ni and Co) in the seawater column of Pula Bay. The bay has been known for decades as one of the most industrialized regions on the Croatian side of the Adriatic. Water samples were collected at 20 sites (at two depths) in four different seasons. The main physico-chemical
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Moderate Anthropogenic Noise Exposure Does Not Affect Navy Bottlenose Dolphin (Tursiops truncatus) Whistle Rates J. Mar. Sci. Eng. (IF 2.9) Pub Date : 2024-03-01 Jessica J. Sportelli, Kelly M. Heimann, Brittany L. Jones
Bottlenose dolphins (Tursiops truncatus) rely on frequency- and amplitude-modulated whistles to communicate, and noise exposure can inhibit the success of acoustic communication through masking or causing behavioral changes in the animal. At the US Navy Marine Mammal Program (MMP) in San Diego, CA, dolphins are housed in netted enclosures in the San Diego Bay and exposed to noise from vessels, unmanned