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The impact of coastal reclamation on tidal and storm surge level in Sanmen Bay, China

Journal of Oceanology and Limnology 2019年第6期37卷 1971-1982页

作者： YANG Wankang feng xingru YIN Baoshu Key Laboratory of Ocean Circulation and Waves Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Second Institute of Oceanography Ministry of Natural ResourcesHangzhou 310012China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Laboratory for Ocean Dynamics and Climate Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

In recent years,fast economic development demands for more land use and thus many reclamation projects are initiated around the Sanmen Bay,Zhejiang,SE China in the East China Sea,for which tidal and storm surge levels are reassessed.A two-dimensional numerical model based on an advanced circulation model(ADCIRC)was applied to evaluate the impact of reclamation projects on tidal and storm surge levels in the *** results show that the shoreline relocation and topographic change had opposite effects on tidal *** relocation decreased the tidal amplitude,while siltation caused topographic change and increased the *** variations of the amplitude were significant in the top areas of Sanmen *** types of typhoon paths were selected for a case study to investigate the impacts of shoreline relocation and topographic change on storm surge *** show that the maximum increase in storm surge level due to shoreline relocation was less than 0.06 *** rise of peak surge level due to the change of topography was significant and the peak surge level rose when siltation *** maximum surge level rise occurred in the path of northwest landing typhoons,which exceeded 0.24 m at the top of the *** rise in peak surge level can potentially lead to severe damages and losses in Sanmen Bay and more attention needs to be paid to this problem of shoreline change in the future.

关键词： Sanmen Bay reclamation project tidal height peak surge level

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Onshore warm tongue and offshore cold tongue in the western Yellow Sea in winter:the evidence

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Journal of Oceanology and Limnology 2018年第5期36卷 1475-1483页

作者： SUN Junchuan YANG Dezhou YIN Baoshu CHEN Haiying feng xingru Institute of Oceanology Chinese Academy of SciencesQingdao 266071China Key Laboratory of Ocean Circulation and Waves Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Marine Science and Numerical Modeling Firstlnstitute of OceanographyState Oceanic Administration Qingdao 266061China

A winter onshore warm tongue extending from the Yellow Sea Warm Current to the southern Jiangsu coast, and an of fshore cold tongue extending from the southern Jiangsu coast to the southwest of Jeju Island(South Korea), are newly identified based on the sea-surface temperature from satellite remote sensing, and further confirmed by the distribution of suspended sediments. In addition, there are two obvious thermal fronts associated with the onshore warm tongue and off shore cold tongue. The narrow gap between the two thermal fronts is supposed to be the pathway for the off shore transport of cold coastal water and suspended sediments. The concurrence of onshore warm and of fshore cold tongues suggests the concurrence of onshore and off shore currents in the western Yellow Sea in winter, which seems to be inconsistent with the previously accepted view that, in winter, the Yellow Sea Coastal Current flows from the Old Huanghe Delta to the southwest of Jeju Island. This distinctive phenomenon helps establish an updated view of the circulation in the western Yellow Sea in winter.

关键词： onshore warm tongue offshore cold tongue cross-shelf exchange western Yellow Sea

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The effect of wave-induced radiation stress on storm surge during Typhoon Saomai(2006)

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Acta Oceanologica Sinica 2011年第3期30卷 20-26页

作者： feng xingru YIN Baoshu YANG Dezhou WILLIAM Perrie Institute of Oceanology China Academy of Sciences Qingdao 266071 China Graduate School Chinese Academy of Sciences Beijing 100049 China Key Laboratory of Ocean Circulation and Wave Chinese Academy of Sciences Qingdao 266071 China Fisheries and Oceans Canada Bedford Institute of Oceanography Dartmouth Nova Scotia Canada

The effects of wave-induced radiation stress on storm surge were simulated during Typhoon Saomai using a wave-current coupled model based on ROMS （Regional Ocean Modeling System） ocean model and SWAN （Simulating Waves Nearshore） wave model. The results show that radiation stress can cause both set-up and set-down in the storm surge. Wave-induced set-up near the coast can be explained by decreasing significant wave heights as the waves propagate shoreward in an approximately uniform direction; wave-induced set-down far from the coast can be explained by the waves propagating in an approximately uniform direction with increasing significant wave heights. The shoreward radiation stress is the essential reason for the wave-induced set-up along the coast. The occurrence of set-down can be also explained by the divergence of the radiation stress. The maximum wave-induced set-up occurs on the right side of the Typhoon path, whereas the maximum wave induced set-down occurs on the left side.

关键词： radiation stress storm surge wave-current interactions Typhoon Saomai

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乌东德双曲拱坝坝基无盖重固结灌浆施工技术

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葛洲坝集团科技 2019年第1期 1-3,8页

作者：刘传炜冯欣茹中国葛洲坝集团三峡建设工程有限公司

乌东德水电站河谷狭窄(宽高比0.9~1.1)、岸坡十分陡峻(60°~75°),拱坝共划分15个坝段其中1#~5#、10#~15#坝段为岸坡坝段,6#~9#坝段为河床坝段。河床坝段建基面高程718m,宽度111.3m左右,上下游方向最长47.6m。大坝坝基布置固结灌浆,灌... 详细信息

乌东德水电站河谷狭窄(宽高比0.9~1.1)、岸坡十分陡峻(60°~75°),拱坝共划分15个坝段其中1#~5#、10#~15#坝段为岸坡坝段,6#~9#坝段为河床坝段。河床坝段建基面高程718m,宽度111.3m左右,上下游方向最长47.6m。大坝坝基布置固结灌浆,灌浆范围为全坝基及坝基轮廓上游外扩5m、下游外扩10m。全坝基采用裸岩封闭无盖重固结灌浆,坝趾贴角部位采用有盖重固结灌浆,贴角下游侧采用无盖重固结灌浆。

关键词：双曲拱坝坝基无盖重固结灌浆

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Mathematics of multi-agent learning systems at the interface of game theory and artificial intelligence

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Science China(Information Sciences) 2024年第6期67卷 445-447页

作者： Long WANG feng FU xingru CHEN Center for Systems and Control College of EngineeringPeking University Center for Multi-Agent Research Institute for Artificial IntelligencePeking University Department of Mathematics Dartmouth College Department of Biomedical Data Science Geisel School of Medicine at Dartmouth School of Science Beijing University of Posts and Telecommunications

Evolutionary game theory (EGT) and artificial intelligence(AI) are two fields that,at first glance,might seem distinct,but they have notable connections and *** former focuses on the evolution of behaviors (or strategies)in a population,where individuals interact with others and update their strategies based on imitation (or social learning).

关键词： multi-agent intelligence mathematics learning interface systems artificial game theory

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海南东方近岸海域海浪观测特征研究

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热带海洋学报 2018年第3期37卷 1-8页

作者：冯兴如李近元尹宝树杨德周陈海英高冠东中国科学院海洋研究所山东青岛266071 中国科学院海洋环流与波动重点实验室山东青岛266071 中国科学院大学北京100049 青岛海洋科学与技术国家实验室海洋动力过程与气候功能实验室山东青岛266237 国电新能源技术研究院海洋地质和水文研究室北京102209 中能电力科技开发有限公司北京100034

利用海南东方近岸海域2014年至2015年间一整年的海浪观测资料,分析了海浪的时间变化特征。观测时间段内,有效波高最大值为4.03m,平均值0.79m;平均周期最大值为6.32s,平均值为3.58s。该海域冬季波高较大,秋季最小,常浪向为SSW方向,强浪向... 详细信息

利用海南东方近岸海域2014年至2015年间一整年的海浪观测资料,分析了海浪的时间变化特征。观测时间段内,有效波高最大值为4.03m,平均值0.79m;平均周期最大值为6.32s,平均值为3.58s。该海域冬季波高较大,秋季最小,常浪向为SSW方向,强浪向为WSW向。基于该长期观测数据,文章亦研究了平均周期、有效波高之间的关系,同时还确立了该海域波高与平均持续时间之间的关系。最后讨论了观测时间段内波浪能流密度的变化特征,发现一年中能流密度大于2kW·m^(-1)的频率为26%,且从全年的计算结果来看,观测位置处12月的波浪能较适宜开发,但总体波浪能资源不够丰富。文章对于认识海南东方近岸海域波浪特征以及工程设计都具有重要的意义。

关键词：海南东方近岸波浪变化特征波高周期联合分布波高持续时间波浪能

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“水下风车”发电开发现状及前景探讨

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风力发电 2019年第1期26卷 35-38页

作者：李近元冯兴如韩毅平王淼张吉邓星中能电力科技开发有限公司北京100034 龙源电力集团股份有限公司北京10034 中国科学院海洋研究所青岛200671

近年来,可再生能源开发利用获得了突飞猛进的发展,主要以风电及太阳能发电为代表。潮流能发电作为可再生能源利用的一种,也越来越被重视。潮流能主要利用水轮机发电,发电方式类似于风电,被形象成为水下风车。潮流能的能量密度较高,约为... 详细信息

近年来,可再生能源开发利用获得了突飞猛进的发展,主要以风电及太阳能发电为代表。潮流能发电作为可再生能源利用的一种,也越来越被重视。潮流能主要利用水轮机发电,发电方式类似于风电,被形象成为水下风车。潮流能的能量密度较高,约为风能的4倍,太阳能的30倍。本文对海上潮流能发电的特点、发展现状、主要发电结构装置结构的技术特点、面临的问题等方面进行了探讨,认为海上潮流能蕴藏量巨大,极具开发前景,全世界海洋能理论可再生量超过7.66×1011kW;我国目前在潮流能发电已经取得一些突破性进展,研发出世界首台应用270°变桨发电机组,实现了双向海流能量高效捕获,使潮流能发电技术进入产业化应用新阶段。但由于海上潮流能发电属于特殊的海洋工程,目前性价比尚未达最优等,能量转换效率及技术可靠性还有待进一步提高。未来可以借鉴海上风电和其他海洋工程设计的理论和经验,持续加以关注。

关键词：风力发电垂直水平升力阻力超级风机

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Sedimentary Patterns and Stratigraphic Trap Models of Deeply Buried Intervals in the Baxian Depression, North China

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Acta Geologica Sinica(English Edition) 2017年第6期91卷 2255-2267页

作者： LI Shengli YU Xinghe ZHANG feng LIANG xingru LI Shunli HUANG Jie CAO Nanzhu School of Energy Resources China University of Geosciences Beijing Huabei Oilfield CNPC

The Baxian depression is a typical half-graben located in the Jizhong sub-basin, north China. Commercial petroleum traps have been discovered in the Jizhong sub-basin. However, the 3rd and 4th members of the Shahejie Formation in this sub-basin have been poorly explored. These two members, belonging to the Lower Paleogene age, are buried deeply in the depression. Favorable petroleum reservoir conditions exist in such deep intervals of the half-graben due to the presence of different types and extent of deltas and turbidity fans in various areas. In fact, three types of turbidite fans are developed in the sag below the transitional belt on the eastern gentle slope. This work summarized three stratigraphic trap belts, i.e., the steep slope, gentle slope, and sag. On the steep slope, structural- stratigraphic traps with small-scale delta fronts and turbidite sandbodies are well developed. On the gentle slope, hydrocarbons generally accumulate in the large-scale delta front, onlapping beds and those sandbodies adjacent to unconformities. In the sag, petroleum trap models are typically characterized by pinched-out turbidite sandbodies. Stratigraphic traps were easily formed in turbidite fans below the eastern transitional belt. The petroleum traps that have already been discovered or predicted in the study area indicate that stratigraphic traps have favorable petroleum exploration potential in deeply buried areas （depth 〉5000 m） in a half-graben basin or depression.

关键词： half-graben stratigraphic trap transitional belt turbidite fan Baxian depression Jizhong sub-basin

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Stock Pattern Mining and Correspondence Analysis Based on Association Rules

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Journal of Data Analysis and Information Processing 2017年第3期5卷 77-86页

作者： xingru Yue feng Shi College of Science Huazhong Agricultural University Wuhan China

In this paper, association rules were applied to mining patterns in stock K-line trend. The pattern which ordinary investors interested in is defined as T-RG (Three-Red Guards). In the mining process, we take the K-line in A-share markets as objects. Through the analysis, investors can select the appropriate point of purchase and selling point. With the help of T-RG, investors can better improve the chance of short-term investment success in A-share markets. In order to explore and validate the T-RG, the main contents of this paper include the following aspects: putting forward a method that judge the validity of rules based on confidence-lift;proposing the meta rule that corresponds to the pattern of T-RG;developing a computer program to extract the T-RG using MATLAB, which supports batch mining;leading fundamental factors into correspondence analysis with identification indexes;reminding the selected stocks, so as to verify the reliability of the identification indexes. According to the above research, something can be learned: In A-share markets, the higher the discriminant index value is, the less number of shares meeting the requirements is;the same discriminant index value, the stock proportion has difference among plates. Confidence P1, P2 and Lift are extremely related to the GC (General Capital), and Lift is extremely related to the Ind (Industry). In the GEM, confidence P1 of mid-cap is near [0.7,1], Lift is near (1,3), confidence P1 of the manufacturing industry is near [0.7,1].

关键词： Stock Meta Rule Confidence Lift Correspondence Analysis

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晶闸管反向并联二极管组件的关断特性研究

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强激光与粒子束 2021年第4期33卷 126-132页

作者：李涛张星汝何孟兵刘俊冯冰洋中国工程物理研究院应用电子学研究所四川绵阳621900 华中科技大学强电磁工程与新技术国家重点实验室武汉430074

晶闸管具有控制特性好,寿命长、体积小、噪声小等优点,是高功率脉冲电源的重要器件。但晶闸管在高电压、大电流、重频工作条件下使用时,会出现晶闸管无法在特定时间内关断的情况,导致脉冲电源出现故障。为提高晶闸管在重频下的工作能力... 详细信息

晶闸管具有控制特性好,寿命长、体积小、噪声小等优点,是高功率脉冲电源的重要器件。但晶闸管在高电压、大电流、重频工作条件下使用时,会出现晶闸管无法在特定时间内关断的情况,导致脉冲电源出现故障。为提高晶闸管在重频下的工作能力,本文对脉冲功率晶闸管组件的关断过程进行研究。基于晶闸管的关断原理和实验分析,在相同di/dt下,增大电流峰值对晶闸管反向恢复特性影响较小,并得到了晶闸管的反向恢复时间、反向恢复电荷和di/dt的关系。根据实验数据拟合晶闸管反向恢复电流波形,修改了电流指数函数模型,可以更好地拟合反向恢复电流。

关键词：脉冲功率开关晶闸管反向恢复动态均压静态均压

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