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Seasonal Variability of Internal Tides Northeast of Taiwan

Journal of Ocean University of China 2020年第3期19卷 740-746页

作者： ZHAO Xinhua HOU Yijun LIU Ze zhuang zhanpeng WANG Kaidi The Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of the Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Pilot National Laboratory for Marine Science and Technology(Qingdao) Laboratory for Ocean and Climate DynamicsChinese Academy of SciencesCenter for Ocean Mega-ScienceQingdao 266000China First Institute of Oceanography(FIO) Ministry of Natural Resources(MNR)of ChinaQingdao 266100China College of Oceanic and Atmospheric Sciences Ocean University of ChinaQingdao 266100China

The spatial-temporal characteristics of the barotropic tides and internal tides(ITs) northeast of Taiwan Island are examined, based on a 1-year mooring current observations from May 23, 2017 to May 19, 2018. The results of harmonic tidal analysis show that the barotropic tides are dominated by semidiurnal tides, which is mainly controlled by M2 tidal components. Moreover, the vertical structures of diurnal and semidiurnal ITs show that the semidiurnal IT shows notable seasonal variation, whereas seasonal variations of the diurnal IT energy is not significant. The semidiurnal IT energy in winter half year is twice that in summer half year. The seasonal variation of semidiurnal IT is mainly modulated by the direction change of the current rather than by the topographic features and stratification. In summer(winter) half year cyclonic(anti-cyclonic) eddies meanly control at this point, so the flow direction is mainly in the southwest(northeast) direction, causing the background flow to flow along(perpendicular to) the isobath. When crossing the isobath, the ITs are generated by the interaction of the barotropic tide and the topography, resulting in the increase of the tidal energy in the winter half year.

关键词： internal tide seasonal variation eddy northeast of Taiwan

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Principal-component estimates of the Kuroshio Current axis and path based on the mathematical verification between satellite altimeter and drifting buoy data

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Acta Oceanologica Sinica 2020年第1期39卷 14-24页

作者： zhanpeng zhuang Zhenli Hui Guangbing Yang Xinhua Zhao Yeli Yuan The First Institute of Oceanography Ministry of Natural ResourcesQingdao 266100China Laboratory for Regional Oceanography and Numerical Modeling Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Institute of Oceanology Chinese Academy of SciencesQingdao 266071China

We used satellite altimetry data to investigate the Kuroshio Current because of the higher resolution and wider range of observations. In previous studies, satellite absolute geostrophic velocities were used to study the spatiotemporal variability of the sea surface velocity field along the current, and extraction methods were employed to detect the Kuroshio axes and paths. However, sea surface absolute geostrophic velocity estimated from absolute dynamic topography should be regarded as the geostrophic component of the actual surface velocity, which cannot represent a sea surface current accurately. In this study, mathematical verification between the climatic absolute geostrophic and bin-averaged drifting buoy velocity was established and then adopted to correct the satellite absolute geostrophic velocities. There were some differences in the characteristics between satellite geostrophic and drifting buoy velocities. As a result, the corrected satellite absolute geostrophic velocities were used to detect the Kuroshio axis and path based on a principal-component detection scheme. The results showed that the detection of the Kuroshio axes and paths from corrected absolute geostrophic velocities performed better than those from satellite absolute geostrophic velocities and surface current estimations. The corrected satellite absolute geostrophic velocity may therefore contribute to more precise day-to-day detection of the Kuroshio Current axis and path.

关键词： Kuroshio axis detection Kuroshio path detection mathematical verification satellite absolute geostrophic velocity principal-component detection

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An efficient parallel algorithm for ocean circulation numerical model based on irregular rectangle decomposition scheme

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Acta Oceanologica Sinica 2016年第5期35卷 18-23页

作者： zhuang zhanpeng YUAN Yeli ZHANG Jie HAN Lei YANG Jungang College of Physical and Environmental Oceanography Ocean University of China The First Institute of Oceanography State Oceanic Administration

A parallel algorithm of circulation numerical model based on message passing interface（MPI） is developed using serialization and an irregular rectangle decomposition scheme. Neighboring point exchange strategy（NPES） is adopted to further enhance the computational efficiency. Two experiments are conducted on HP C7000 Blade System, the numerical results show that the parallel version with NPES（PVN） produces higher efficiency than the original parallel version（PV）. The PVN achieves parallel efficiency in excess of 0.9 in the second experiment when the number of processors increases to 100, while the efficiency of PV decreases to 0.39 rapidly. The PVN of ocean circulation model is used in a fine-resolution regional simulation, which produces better results. The capability of universal implementation of this algorithm makes it applicable in many other ocean models potentially.

关键词： irregular rectangle decomposition scheme message passing interface(MPI) neighboring point exchange strategy data communication

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不同层结条件下海浪生湍流混合特征分析及其对上层海洋的影响

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海洋科学进展 2024年第3期42卷 437-451页

作者：庄展鹏袁业立自然资源部第一海洋研究所山东青岛266061 自然资源部海洋环境科学与数值模拟重点实验室山东青岛266061 崂山实验室区域海洋动力学与数值模拟功能实验室山东青岛266061

上层海洋混合过程的动力学研究和数值模拟一直是海洋和气象学家关注的重点之一,其中上层海洋垂向混合参数化方案的不准确直接影响海洋模式的模拟效果。风生海浪对海气相互作用以及上层海洋的内部混合都起到极为重要的作用。本文基于包... 详细信息

上层海洋混合过程的动力学研究和数值模拟一直是海洋和气象学家关注的重点之一,其中上层海洋垂向混合参数化方案的不准确直接影响海洋模式的模拟效果。风生海浪对海气相互作用以及上层海洋的内部混合都起到极为重要的作用。本文基于包含垂向层结效应的海浪生湍流混合系数理论模型,开展不同层结条件下海浪生湍流混合系数的分布变化特征分析。构建了一维理想解析实验和准全球算例,结果表明,在100 m以浅的上层海洋中,混合层深度与上述混合系数呈现较为显著的负相关关系,当跃层或混合层深度较大时能够显著增强垂向混合过程,进而使表层暖水下降至更深的位置,加深混合层深度模拟结果。主要原因是由于深跃层条件下表层的层结效应较弱,因而对混合的抑制作用较小。此外,在准全球算例中海浪生湍流混合方案可显著提高海洋环流模式对上层海洋温度结构的模拟能力,模式对跃层处WOA13实测数据的模拟精度最高可提升60%以上。

关键词：海浪生湍流混合垂向层结条件海洋环流数值模拟跃层深度

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具二次等式约束最小二乘问题的一种极端情形

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计算数学 2012年第4期34卷 361-372页

作者：庄展鹏刘新国中国海洋大学数学科学学院山东青岛266100

本文研究具有二次等式约束的最小二乘问题(LSS):min ||Ax-b||_2 s.t.||x||2=1,其中A∈R^(m×n),b∈R^m,并假定||A+b||_2<1.重点关注一个极端情形:||A+b||-2≈0.敏度分析表明,这是一种病态问题.基于Pade逼近给出了一种迭代解法.数值算例... 详细信息

本文研究具有二次等式约束的最小二乘问题(LSS):min ||Ax-b||_2 s.t.||x||2=1,其中A∈R^(m×n),b∈R^m,并假定||A+b||_2<1.重点关注一个极端情形:||A+b||-2≈0.敏度分析表明,这是一种病态问题.基于Pade逼近给出了一种迭代解法.数值算例表明,新方法在速度上较已有方法有优势.

关键词：最小二乘病态问题扰动分析 Pade逼近

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基于AVISO卫星高度计资料的黑潮表层流轴时空变化特征分析

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数字海洋与水下攻防 2024年第1期7卷 54-61页

作者：庄展鹏董婷婷自然资源部第一海洋研究所海洋环境科学与数值模拟重点实验室崂山实验室区域海洋动力学与数值模拟功能实验室

黑潮是著名的太平洋西边界流，是东中国海环流系统的主动脉。我国东海和黄、渤海的水文状况，基本上受黑潮及其分支所制约，因此，对黑潮的研究受到国内外学者的广泛关注。针对AVISO高度计地转流资料，采用改进的特征线法和最大梯度法... 详细信息

黑潮是著名的太平洋西边界流，是东中国海环流系统的主动脉。我国东海和黄、渤海的水文状况，基本上受黑潮及其分支所制约，因此，对黑潮的研究受到国内外学者的广泛关注。针对AVISO高度计地转流资料，采用改进的特征线法和最大梯度法，实现对黑潮表层流轴的自动化探测。利用经验模分解方法对黑潮流轴的离岸距离序列进行了分解，并利用自组织映射方法对黑潮流轴进行了分类。结果表明，黑潮流轴在本州岛南部和九州岛南部海域摆动幅度较大，在四国岛南部海域摆动幅度较小。在九州岛南部海域，黑潮流轴在所研究时间段内有超过一半时间呈近岸平直特征，而“大弯曲”状态占比约35%。

关键词：黑潮表层流轴卫星高度计资料自动化特征提取

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Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue zhuang Yanxin Qiao Yu Zhang Aihua Yuan Hu Zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere

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Lipid droplets in the nervous system:involvement in cell metabolic homeostasis

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Neural Regeneration Research 2025年第3期20卷 740-750页

作者： Yuchen Zhang Yiqing Chen Cheng zhuang Jingxuan Qi Robert Chunhua Zhao Jiao Wang School of Life Sciences Shanghai UniversityShanghaiChina School of Medicine Shanghai UniversityShanghaiChina Institute of Basic Medical Sciences Chinese Academy of Medical Sciences School of Basic MedicinePeking Union Medical CollegeBeijingChina Center of Excellence in Tissue Engineering Chinese Academy of Medical SciencesBeijingChina Beijing Key Laboratory of New Drug Development and Clinical Trial of Stem Cell Therapy BeijingChina

Lipid droplets serve as primary storage organelles for neutral lipids in neurons,glial cells,and other cells in the nervous *** droplet formation begins with the synthesis of neutral lipids in the endoplasmic ***,lipid droplets were recognized for their role in maintaining lipid metabolism and energy homeostasis;however,recent research has shown that lipid droplets are highly adaptive organelles with diverse functions in the nervous *** addition to their role in regulating cell metabolism,lipid droplets play a protective role in various cellular stress ***,lipid droplets exhibit specific functions in neurons and glial *** of lipid droplet formation leads to cellular dysfunction,metabolic abnormalities,and nervous system *** review aims to provide an overview of the role of lipid droplets in the nervous system,covering topics such as biogenesis,cellular specificity,and ***,it will explore the association between lipid droplets and neurodegenerative *** the involvement of lipid droplets in cell metabolic homeostasis related to the nervous system is crucial to determine the underlying causes and in exploring potential therapeutic approaches for these diseases.

关键词： Alzheimer's disease lipid droplet biogenesis lipid droplets lipid metabolism nervous system neurodegenerative disorders oxidative stress Parkinson's disease

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Interfacial Zn2+-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang Li Shan Guo zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials Hunan Institute of Science and Technology School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University College of Materials and Metallurgy Guizhou University National Energy Metal Resources and New Materials Key Laboratory Central South University

Aqueous zinc-ion batteries （AZIBs） are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc （Zn） deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn2+-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups （such as hydroxyl,carboxyl,etc.） have the potential to significantly optimize the solvation structure of Zn2+and regulate the interfacial electric double layer （EDL）.By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn （H-Zn） anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH4V4O10（NVO） full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A *** study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

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基于非结构化的海洋动力模式FVCOM的北印度洋海域数值模拟

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实验技术与管理 2022年第5期39卷 21-28,34页

作者：阮宗利徐丹亚王际朝庄展鹏吴国丽张艳华纪艳菊中国石油大学(华东)理学院山东青岛266580 南方海洋科学与工程广东省实验室(珠海) 广东珠海519080 自然资源部第一海洋研究所山东青岛266061

使用FVCOM对北印度洋海域进行了数值模拟,并对算例的构建过程做了详细的描述。模式中加入了TPXO 7.2的潮位驱动和ERA5的风场强迫,并将FVCOM中输出的水位SSH与国家海洋科学数据中心的历史观测数据进行了对比验证。各观测站的预测与实测SS... 详细信息

使用FVCOM对北印度洋海域进行了数值模拟,并对算例的构建过程做了详细的描述。模式中加入了TPXO 7.2的潮位驱动和ERA5的风场强迫,并将FVCOM中输出的水位SSH与国家海洋科学数据中心的历史观测数据进行了对比验证。各观测站的预测与实测SSH时间序列的对比曲线和RMSE、RRMSE、相关系数等结果表明,该区域的FVCOM数值模拟是很有效的,并且是高精度的,获得的最小RMSE和RRMSE分别为0.09 m和0.02。

关键词：海洋数值模拟 FVCOM SSH 风场强迫潮汐驱动

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