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研究了连续变量函数的全局最优化问题 ,给出了动态隧道方法。该动态隧道方法由局部搜索和动态隧道 2个阶段构成。在局部搜索阶段用了动态系统方法。对全局最优化问题的实例进行了数值实验 ,数值结果表明了该方法的稳健性和有效性。 相似文献
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《中国海洋大学学报(自然科学版)》1984,(1)
海洋气象学是一门边缘科学。我院建院二十五年来,海洋气象专业的教师们在积极作好教学工作的同时,也在海洋气象学方面进行了科学研究工作。在实践和理论等方面都获得了较好的成果。发现了一些有科学价值的现象,解决了一些国家急需解决的问题,提高了理论水乎,也补充了教材内容,提高了教学质量。 相似文献
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《山东海洋学院学报》1984,14(1):5-6
海洋气象学是一门边缘科学。我院建院二十五年来,海洋气象专业的教师们在积极作好教学工作的同时,也在海洋气象学方面进行了科学研究工作。在实践和理论等方面都获得了较好的成果。发现了一些有科学价值的现象,解决了一些国家急需解决的问题,提高了理论水平,也补充了教材内容,提高了教学质量。 相似文献
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本文回顾了近年来关于西沙群岛晚第三纪生物礁研究的新成果:发现了9属43种造礁钙藻,建立了它们的演变系列,描述了它们的造礁作用:探讨了礁白云岩成团。发现了一批微体古生物新种,提出了中新世地质界线的划分方案。 相似文献
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青岛市后海岸滩建设开发改造工程,在建设过程中,对一些重大项目实行了动态管理,从而缩短了工期,提高了工程质量,减少了工程投资,提高了经济效益,实现了多快好省的建设目标。依据参与该动态管理的实践,介绍了就工程实行动态管理及需注意的问题。 相似文献
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台湾海峡地质构造特征 总被引:11,自引:1,他引:11
台湾海峡及其邻区构造可分为3个一级构造单元,即闵浙中生代隆起区、台湾峡新生代坳陷区和台湾新生代岛弧褶断区。其中台湾海峡新生代坳陷区由海峡的主体和台湾西部兵陵平原区组成,它的东、西边界分别是台湾屈尺-老浓断裂带和粤滨外深断裂带。本文在以往海峡西岸东南海海长东-南澳断裂带研究基础上,对近年来台湾海峡、特别是海峡新生代坳陷区各次一级构造单元的深部地质结构,海底地形地貌、沉积特征、断裂构造、火成岩分布和地 相似文献
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本文主要论述了台湾海峡及其两岸地震和地热的各自特征以及它们之间的关系。该地区的4个北东向地震带刻划了各个块体的相互关系。台东地震带的震源机制解表明台湾纵谷具有复杂的过渡性构造。台湾西部和台湾海峡的地震活动也受到菲律宾海板块的控制。福建沿海的地震活动与巴士断层活动有关。在自东向西各地震带的活动能量急剧下降的同时,相应的地热流异常值有一个上升趋势,海峡西岸的地热异常高值多分布在NE与NW向断裂的交汇点上。 相似文献
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INTRODUCTIONIn the late summer Of 1994 (from the end of August to the beginning of September), R/VsOcean Research l, Yanping 2, Ocean Research 3 and XiangWnghong 14 conducted a quasi-simultaneous comprehensive investigation in the southern Taiwan Strait (STS), the northeasternSouth China Sea (SCS) and their adjacent areas, and got CTD data from more than 330 stations.Based on sectional salinity distribution of 10 selected sections, this paper analyses the sectionaldistribution of… 相似文献
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台湾海峡表层沉积物中重矿物特征及其物质来源 总被引:15,自引:0,他引:15
台湾海峡重矿物平均分布0.95%,其分布由西岸向东岸递减;由北部经台湾浅滩朝粤东方向缓慢递减。碎屑矿物46种,以角闪石、绿帘石、磁铁矿、钛铁矿、褐铁矿和片状矿物为主,它们占重矿物含量的67%。据主要重矿物含量将海峡分成8个矿物组合区。碎屑矿物来自海峡两岸基岩,通过河流搬运入海,有部分片状矿物为海峡以北的物质随浙闽沿岸流进入海峡而沉积。其海绿石是台湾西岸、澎湖岛第三系或第四系含海绿石岩层剥蚀后搬运入海沉积而成的。台湾浅滩的残留沉积物为晚更新世低海面时期的河口滨海相沉积物。由于处在开放的海洋环境,至今没有接受现代沉积。残留沉积物中的磁铁矿、钛铁矿、锆石等重矿物相对富集,含量高于近源海域,有可能赋存浅海砂矿。 相似文献
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Jianyu Hu Hiroshi Kawamura Chunyan Li Huasheng Hong Yuwu Jiang 《Journal of Oceanography》2010,66(5):591-610
Patterns and features of currents and seawater volume transports in the Taiwan Strait have been reviewed by examining the results from more than 150 research papers in recent decades. It is noted that there are diverse or even conflicting viewpoints on these subjects. Here both common and different opinions are summarized. This review paper covers the studies involving in situ measurements and numerical modeling of current velocity, analyses of hydrographic data, and classification of water masses. Generally speaking, there are three currents in the Taiwan Strait: the China Coastal Current along the Fujian coast in the western Taiwan Strait, the extension of the South China Sea Warm Current in the western and central Taiwan Strait, and the Kuroshio’s branch or loop current intruding through the eastern Taiwan Strait. The current pattern in winter is quite different from that in summer, and the currents also exhibit differences between the upper and lower layers. The seawater volume transport through the Taiwan Strait is about 2.3 Sv northward in summer but about 0.8 Sv northward in winter. Both the current pattern and the seawater transport vary with local winds in the Taiwan Strait. This is particularly true in winter when the currents and the transport in the upper layer are significantly affected by strong northeasterly winds. 相似文献
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Concerning the ecological studies of the Hydromedusae and Ctenophores in Taiwan Strait, we have only two papers available on these studies in the southwest of Taiwan Strait. Throughout the western Taiwan Strait, for the first time the paper reports species composition, seasonal change, hori zontal distribution, ecological characteristics of the Hydromedusae and Ctenophores and their relationship to the environmental factors. 相似文献
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This article presents general information on environmental geotechnical problems along the Taiwan Strait Tunnel (TST) route including sea-floor characteristics. The term apparent sea-floor is introduced. This layer is due to land erosion washing down and settling in the Taiwan Strait. The depth of ocean water along the Taiwan Strait is estimated. Various soil, and rock types and marine sediments along the coastline of mainland, Taiwan Strait, and Taiwan Islands are presented. Foundation problems under adverse marine environments are discussed. 相似文献
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《Marine Georesources & Geotechnology》2013,31(3-4):213-226
This article presents general information on environmental geotechnical problems along the Taiwan Strait Tunnel (TST) route including sea-floor characteristics. The term apparent sea-floor is introduced. This layer is due to land erosion washing down and settling in the Taiwan Strait. The depth of ocean water along the Taiwan Strait is estimated. Various soil, and rock types and marine sediments along the coastline of mainland, Taiwan Strait, and Taiwan Islands are presented. Foundation problems under adverse marine environments are discussed. 相似文献
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本文根据1994年9月16日台湾海峡7.3级强震序列的空间活动图象变化特征,结合历史地震资料,比较分析了台湾海峡区域史今地震活动的总体演变过程,表明该区强震发生与周边地区的台湾,日本及菲律宾大地地震,在时间进程,强度变化和地域分布关系上存在关地球物理场变化的影响。 相似文献
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GPS observation indicates that the Fujian coastal region of China mainland, the region of Taiwan Strait and northern Taiwan island all show a generally homogenous horizontal motion with weak deformation. Historical earthquake record over more than 800 years and modern instrumental data reveal that there is potential seismic risk in and around Taiwan Strait region. After the National Seismic Zoning Map of China (2001) the expected seismic risk in northern part of the Taiwan Strait is lower than that in middle and southern part. The suggested northern route of the Taiwan Strait passage project seems to be relatively save seismically. 相似文献