深水港与江苏海洋经济探讨——以洋口港为例   总被引：1，自引：0，他引：1  

于文金  朱大奎 《海岸工程》2009,28(1):63-71

从江苏海洋经济发展现状入手,分析了江苏海洋经济的特点、存在问题和发展瓶颈。基于江苏海洋经济和深水港口的现状,重点阐述了洋口港在江苏海洋经济中的地位和作用,提出洋口港是苏北海岸发展重要的支点,江苏海洋经济的希望在于深水大港以及由此带动发展起来的港区工业和海港中心城市,提出了“一核三载体”的海洋发展战略。  相似文献   

港池爆炸兴波响应的计算方法   总被引：3，自引：0，他引：3  

沈国光  李德筠 《海洋工程》1994,12(3):73-82

本文以爆炸兴波的ＭＡＣ法轴对称计算结果为初值，提出了对于实际港池后期兴波响应的两种计算方法。其一是基于溶器内液体驻留运动的振型叠加法，其二是爆炸早期兴波与浅水波理论的时域衔接法。进行了一千吨ＴＮＴ当量在港池内触水爆兴波的实例计算。计算表明，该方法能够合理地描述波浪演化特征，与爆炸现场的景观相吻合，可为工程设计提供简易、实用的结果。  相似文献   

Reassessing the invasion of South African waters by the European shore-crab Carcinus maenas     

CA Mabin  JRU Wilson  JJ Le Roux 《African Journal of Marine Science》2017,39(3):259-267

The European shore-crab Carcinus maenas has been present in South Africa since 1983. Despite this species’ international reputation as a biological invader, its distribution in this region has only been considered by three outdated ‘snapshot surveys.’ The present study is the most comprehensive to date, providing an update on the species’ range and the first temporal assessment of its abundance and demographics. Along South Africa's Cape Peninsula and surrounding areas, C. maenas was absent from 12 intertidal sites surveyed, except for Sea Point, and no crabs were found during subtidal surveys along the open coastline. Subtidal harbour populations were recorded in the Cape Town harbours of Table Bay and Hout Bay (previously estimated as comprising approximately 164 200 and 6 500 individuals, respectively). Table Bay was surveyed monthly for one year, using baited traps, crab condos and postlarvae settlement collectors, to assess size distributions and reproductive seasonality of the crab. Reproductive females were recorded throughout most of the year. These results suggest that the harbour populations could be targeted by control programmes, but provide no strong evidence to support the initiation of management action during a particular season. The lack of detection of postlarval settlement, even among well-established populations, suggests this will not be a useful monitoring tool for detecting incursions.  相似文献   

Generation of Meteorological Tsunamis (Large Amplitude Seiches) Near the Balearic and Kuril Islands   总被引：5，自引：5，他引：0  

Rabinovich  Alexander B.  Monserrat  Sebastian 《Natural Hazards》1998,18(1):27-55

Extreme atmosphere-induced seiche oscillations occasionally occur in specific inlets and bays of the world ocean causing severe damage to coastal areas, ships and port constructions. Ciutadella inlet (Menorca Island, Western Mediterranean) can be singled out as a place where such large seiches, locally known as rissaga, are quite common. Similar (although weaker) oscillations are also regularly observed in bays of Shikotan Island (South Kuril Islands, northwestern Pacific). Several spectacular events in these regions, identified in the first part of this study (Rabinovich and Monserrat, 1996), are analysed to determine the atmospheric parameters responsible for the generation of large-amplitude seiches. Their generation mechanism was shown to be quite different from that causing ordinary background oscillations. Coincidence of some external factors and certain resonance effects seem to be necessary to produce the destructive waves. In particular, rissaga waves in Ciutadella inlet were found to be related to significant atmospheric disturbances propagating from the southwest, coinciding with the orientation of the inlet, and having a phase speed of about 3 m/s, which is close to the phase speed of long waves offshore from Menorca. Pronounced resonant properties of the inner basin strongly amplify incoming waves in Ciutadella inlet. In contrast, the bays of the northwestern coast of Shikotan Island are protected from normally incident atmosphere-induced waves by the elongated Kunashir Island, hence the whole situation there is not so favorable for the excitation of large seiches.  相似文献   

漳州港码头岸线规划潮流及泥沙问题研究   总被引：1，自引：0，他引：1  

陈勇  刘家驹 《海洋工程》1996,(2)

本文在实测资料的基础上，全面分析了漳州港海域的波浪要素，潮流动力，泥沙运移特性和水深演变等，计算了漳州港码头工程前后潮流分布场，并在此基础上预报了漳州港起步工程的３．５万吨级码头泊位、港池、航道的泥沙冲淤幅度。结果表明，漳州港海域的水深维护主要与上游纳潮面积大小有关，海域潮差大，潮流强，水深大，波浪小，海域泥沙主要来源于上游的九龙江，年输沙量为２７７万ｔ，海域年平均含沙量也不大，港池航道水深可由水流动力来维持、泊位和淤积很小，这些情况表明，漳州港屿仔尾海区建港的自然条件是优越的。  相似文献   

沙埕港污损生物的生态研究   总被引：12，自引：0，他引：12  

李传燕  林盛 《台湾海峡》1994,13(2):111-117

１９９０年３月至１９９１年２月，在闽沂交界处的沙埕港进行周年污损生物挂板试验，共记录生物７０年，其中，海藻１３种，动物５７种，以泥藤壶，网纹藤壶，僧帽牡盛，中胚花筒螅，太平洋侧花海葵，香港网筛苔虫和多种端足类为优势种，全年 生物附着，夏，秋春，冬季的优势种有显著不同，优势种突出，附着量特别大，夏季底层板（６－８月）的湿重生物量达２８．０３ｋｇ／ｍ＾２，为目前全国沿岩港湾生物量之冠。  相似文献   

广西廉州湾浅地层结构特征及其环境与工程意义     

蔡锋  陈峰 《台湾海峡》1995,14(2):113-117

广西北海廉州湾围垦工程是北海市一项开发利用海洋资源，进行多功能开发的重要工程项目。本文介绍了围垦工程区的浅地层声学探测结果，分析了该区的浅地层结构特征，并在此基础上讨论了其浅地层结构的环境意义及工程意义。  相似文献   

Harbour porpoise (Phocoena phocoena L.) by-catch in set gillnets in the Celtic Sea     

Tregenza  N. J. C.; Berrow  S. D.; Hammond  P. S.; Leaper  R. 《ICES Journal of Marine Science》1997,54(5):896-904

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Study on Deposition in Semi-Closed Coastal or Estuarine Harbour Basins   总被引：1，自引：0，他引：1  

Xu Xiao Senior Engineer  River  Harbour Engineering Department  Nanjing Hydraulic Research Institute  Nanjing 《中国海洋工程》1995,(1)

A preliminary study on the distribution of sediment transport and siltation within a semi-closed harbour as well as the factors affecting the siltation has been made with a suspended sediment model, in which the Lianyungang port is used as the prototype. Based on the work, this paper describes a tubid water experiment within a typical excavated harbour basin. According to the experimental results some expressions for predicting the average siltation amount for semi-closed harbour basins by means of dimensional analysis have been proposed, with tidal features, harbour geometry and properties of sediment taken into account. Through comparing the calculated results with the laboratory and field measured data, it has been shown that the expressions presented in this paper are reasonable.  相似文献   

厦门西港红树林的卫星遥感测绘   总被引：6，自引：0，他引：6  

林荣盛  章文毅 《台湾海峡》1994,13(3):297-302

厦门西港原有大面积红树林，几十年来受到很大破坏，需采取措施进行监测绘和管理，卫星遥感宏观大尺度，可以快速，准确地进行红树林的监测测绘，比传统的人工调查方法省时省力。本项目运用Ｌａｎｄｓａｔ卫星ＴＭ－ＣＣＴ数字影像磁带为信息源。通过图像计算机系统进行几保精校正，假彩色合成，ＳＣＡＬＥ线性增强和一阶直方图分段线性拉伸；训练区监督分类，以及红树林区的面积积分运算等步骤，获得了厦门西港红树林区１：５０００  相似文献