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《北极航海地图集》是我国首部详细反映北极自然地理、通航条件和助航资源的大型综合性地图集,特殊的地理条件决定了其在编绘方式上与其他图集不同。针对图集编制中遇到的问题,从资料收集与处理、内容设计、专题要素表示方法、色彩与符号设计、版式设计、地图整饰、工艺流程等7个方面,介绍了图集的设计思想与编制技术,可为其他同类图集的编制提供参考。 相似文献
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通过《海军军官图集》的编制，研究了地图集的基本设计思路，包括总体设计的基本内容与原则，提出了图集结构的模式，以及投影选择、比例尺设计和分幅的方法等。 相似文献
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内容选题是海洋军事图集乃至所有地图集编辑设计工作中一个非常重要的环节。本文结合《海军军官图集》的编制,提出了综合性海洋军事地图集选题的基本原则、方法和注意事项。 相似文献
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《世界海洋通道及港口图集》由海军海洋测绘研究所编制、海军司令部航海保证部于1996年6月正式出版。 21世纪是人类走向海洋、开发海洋的时代,海洋将成为人们赖以生存和发展的重要空间,出版这本图集顺应了时代发展的需要。该图集为世界海洋普通地理图集,军需民用。为部队各级指挥机关、从事海洋工作的各个部门了解和研究世界海区地理情况提供可靠的信息,也可作为广大读者了解海洋知识和海洋地理情况的参考书。图集内容由总图、海区图、海上通道 相似文献
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研究了编制出版《国家海洋地图集》对了解海洋状况、合理开发海洋资源、保护海洋生态环境的重要性；初步提出了海洋图集的内容、表达方法和组织实施的意见。 相似文献
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《长春市城市总体规划》图集的编辑制作 总被引：3，自引：1，他引：3
简要阐述了用MapGIS、CoreIDRAW两种软件结合制作《长春市城市总体规划》图集的设计、编制方法，采用图层模式有效管理地图集的数据．根据实践得出了一些经验和技巧。 相似文献
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<正>我国是海洋大国,海岛众多。海岛是壮大海洋经济、拓展发展空间的重要依托,是保护海洋环境、维护生态平衡的重要平台,是捍卫国家权益、保障国防安全的战略前沿。2009年12月26 相似文献
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The New Zealand Waters Pollution Regulations 1963, referring to recreational water to which the public can gain access, states that the “coliform bacteria content shall not consistently exceed 1,000/100 ml”. This standard is now under revision, and the suggested new standard is a median faecal coliform index of 200/100 ml with a maximum value not exceeding 400/100 ml. Recent literature supports the use of faecal coliform sub‐group bacteria as the best indicator of faecal pollution and reference is made to the membership of this sub‐group. Inherent inaccuracies of the Most Probable Number (MPN) method of assessing bacterial populations are pointed out, such as experimental variations with different cultural media, and possible errors in interpretation of results. In North America, there is evidence that an MPN for the total coliform group of 1000/100 ml indicates a faecal coliform sub‐group MPN of 200/100 ml, and epidemiological experience supports these values as standards. We tabulate and discuss evidence that the usual ratio of faecal coliforms : coliform group bacteria is typically 1 : 1 in fresh and marine waters of the Wellington region, and that a more attainable standard would be 500 faecal coliforms/100 ml. In ratios quoted in this paper, ‘coliform group’ means the remainder of the coliform group excluding faecal coliforms. The World Health Organisation (1963) definition, of the entire group of coliforms, is not intended. The ratio is different in other parts of New Zealand; in Auckland, for example, the ratio is close to that found in the United States. 相似文献
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《Coastal Engineering》1999,36(3):263-269
Using the logarithmic wind profile and typical values of dimensionless sea roughness for different sea states, simple power expressions are derived for the wind profile over water. The power expressions are useful for correcting measured wind speed data at a given elevation (up to an elevation of 60 m) to the standard elevation of 10 m commonly used in coastal engineering studies. The analysis shows that the 1/7 power expression (suggested in [U.S. Army Corps of Engineers, 1984. Shore Protection Manual, Vol. 1. Coastal Engineering Research Center, Vicksburg, USA.] and commonly used today) is a good approximation (<3% error) of the logarithmic profile for various sea states up to an elevation of 20 m. Above this elevation, the 1/7 power expression underestimates the wind speed for moderate to fully developed sea states. 相似文献
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《Marine Policy》2015
This paper systematically reviews and synthesizes peer-reviewed, English-language scientific publications (n=212) to identify relevant research about how Ecosystem-Based Adaptation (EBA) is integrated with coastal planning. Preferred Reporting Items for Systematic reviews and Meta-Analysis (PRISMA) methodology is applied in this study. Attention was given to studies concerning human-environment interactions as opposed to physical or biological climate change issues alone because the coastal planning and EBA approach addresses the management of human actions in nature. The literature references include the issue of climate change (77%); however, limited evidence of EBA in coastal areas are reported (18%), and it is evident that the issues have become relevant in the scientific literature published in recent years. Broad texts demonstrate that SLR is one of the major long-term impacts (68%), and all of these papers recognize the most affected ecosystems in the tropics would be mangroves. EBA is an emerging option that can offset anticipated ecosystem losses and improve coastal planning to cope with SLR because it provides benefits beyond climate change stressors. There is a need to synthesize a road map for incorporation of mangrove regulations into local planning instruments and for building capacity for their implementation. Application of PRISMA in marine science will enhance future reviews, facilitate the systematic search and adequately document any theme, and also be useful in determining research gaps or information needs. 相似文献
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《Marine Policy》2014
This paper summarises research and options for sustainable sea transport in Oceania with a focus on domestic shipping. This debate is situated initially within the context of the current Pacific domestic shipping scenario, a region of minute economies connected by some of the longest sea transport routes in the world. All current options are fossil fuel powered and increasingly uneconomic and unsustainable. Many routes are marginal or unviable and a vicious cycle of old ships replaced with old ships prevails. Although a central and essential issue of many Pacific communities, the option of pursuing sustainable sea transport is currently invisible within the policy space at all levels. Various renewable energy options are possible and increasingly available. Recent research finds that these have strong potential for providing benefits across multiple wellbeings. The barriers to pursing this agenda are complex and poorly understood but are perceptual and institutional more than technological. A small number of critical experiments during the last oil crisis provide critical lessons and direction. 相似文献
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日本在日前发表的《信息通信白皮书》中提出，要建立网络无所不在的社会；美国1999年提出了“21世纪信息技术计划”，由此看出，信息社会正向人类走来，人们唯有通过网络才能快捷、有效地获得有用信息，海洋产业唯有借助网络才能推动科学研究，有效地利用海洋资源，促进海洋经济发展，海洋信息共享工程建设势在必行。标准化原理能确保海洋信息共享工程建设有序、高效、质量优良。 相似文献
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提出了一种用于对不连续压力采样序列的傅立叶分析方法.此方法将周期函数展开成傅立叶级数,但在数值积分时取函数周期内有采样值的区间作为积分域,然后求解线性方程组得到傅立叶级数的系数值.为了检验本方法的有效性,利用此方法对解析函数进行了拟合,当一个周期内的取样时间大于1/2周期时,利用此方法能够得到满意的结果.利用实验方法研究了波浪作用下截断圆柱表面的压力分布.在波浪作用下静水面附近的测点在露出水面时没有压力值.利用所提出的傅立叶分析方法对略低于静水面位置的实测压力进行了分析,拟合结果与实测结果吻合很好,说明此方法在处理物理模型实验中间断采样得到的数据是有效的.利用数值方法对波浪压力进行了计算,并将一阶和二阶波压力的数值结果与实测值进行了比较. 相似文献
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《中国海洋工程》2018,(4)
正Aims and Scope Being an international journal,China Ocetan Engineering(COE)takes its prime function as the integration of new research concepts,equipment,technology,materials and.structures and other scientific advances within the field of estuarial,coastal,offshore,and deepwater engineering with particular reference to developments.The Journal is concerned with all engineering aspects involved in the exploration and utilization of ocean resources.Topics regularly covered include research,design and 相似文献
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《中国海洋工程》2019,(2)
正Aims and Scope Being an international journal, China Ocean Engineering(COE) takes its prime function as the integration of new research concepts, equipment,technology, materials and structures and other scientific advances within the field of estuarial,coastal,offshore, and deepwater engineering with particular reference to developments. The Journal is concerned with all engineering aspects involved in the exploration and utilization of ocean resources. Topics regularly covered include research, design and construction of structures (including wharfs, dikes, breakwaters,platforms, mooring systems, etc.), instrumentation/testing (physical model and numerical model), wave dynamics, sedimentation,structural/stress analysis, soil mechanics, and material research. 相似文献