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Intercomparison of wave measurements obtained from a NOMAD buoy and from a waverider buoy in Lake Erie 伊利湖NOMAD浮标和乘波浮标波浪测量值的比较
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160221
D. Schwab, P. Liu
Wave data recorded by a NOMAD buoy and a Waverider buoy in the west central basin of Lake Erie during September, October, and November 1984 are compared. Data include significant wave height, average wave period, wave spectra, and water temperature. The two systems were found to provide comparable estimates of wave height, wave period, and wave spectra only during periods when significant wave height exceeded 0.5 m. At lower wave heights, the NOMAD buoy gave slightly lower estimates of significant wave height than the Waverider. The Waverider processing system was unable to provide accurate spectral information for low wave heights because of aliasing. Water temperature measurements from the two systems were virtually identical.
比较了1984年9月、10月和11月在伊利湖中部盆地西部用NOMAD浮标和Waverider浮标记录的波浪数据。数据包括有效波高、平均波周期、波谱和水温。两种系统仅在显著波高超过0.5 m时提供了可比较的波高、波周期和波谱估计。在较低波高时,NOMAD浮标给出的有效波高估计略低于乘波号。由于混叠,乘波号处理系统无法提供低波高的准确光谱信息。两个系统的水温测量结果几乎相同。
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引用次数: 6
Overview of NOAA's Exclusive Economic Zone Survey PROGRAM 美国国家海洋和大气管理局专属经济区调查计划概述
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160220
D. Pryor
NOAA's National Ocean Service has begun a new program of mapping the ocean floor within the United States' Exclusive Economic Zone. The program will produce base maps to support the exploration, exploitation, conservation and management of natural resources in this vast area which is now under national sovereignty. This is a cooperative effort with the United States Geological Survey and a part of a Federal program in support of the Exclusive Economic Zone. The primary mission of the program is to produce accurate, high resolution bathymetric data using modern multibeam swath mapping systems. NDAA is currently applying its two systems - a Sea Beam and a Bathymetric Swath Survey System (BS3)- to this task. Additional systems are to be installed. Characteristics of these systems and the positioning equipment being used as well as the data processing techniques being employed will be examined and related to the data products which are being prepared. Mapping progress to date will be reviewed and survey plans described. Opportunities for acquisition of other data in conjuction with the planned surveys will be presented.
美国国家海洋和大气管理局(NOAA)的国家海洋局(National Ocean Service)开始了一项新的计划,绘制美国专属经济区(Exclusive Economic Zone)内的海底地图。该计划将制作基础地图,以支持在这片目前处于国家主权之下的广大地区勘探、开发、保护和管理自然资源。这是与美国地质调查局的一项合作努力,也是支持专属经济区的联邦计划的一部分。该项目的主要任务是使用现代多波束测绘系统生成精确、高分辨率的测深数据。NDAA目前正在应用其两个系统——海波束和水深测量系统(BS3)来完成这项任务。需要安装额外的系统。将审查这些系统的特点和所使用的定位设备以及所采用的数据处理技术,并将其与正在编制的数据产品联系起来。将审查迄今为止的制图进度,并说明调查计划。将提出与计划的调查一起取得其他数据的机会。
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引用次数: 6
Quantitative performance data of a new automatic optical bench salinometer/densitometer 新型全自动光学台式盐/密度计的定量性能数据
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160311
K. Mahrt, W. Kroebel
One can realize a powerful optical interferometric electronical bench salinometer/ densitometer, which may even use distilled water as a reference rather than "Standard Sea Water". Major specifications of the present day prototype in terms of salinity are: Accuracy:pm 0.005precision:pm0.001, reasonable resolution: 0.0003. The range of measurements covers S = 0...40. A favourable feature is the inherent possibility of measurement in continuous flow. Problems of thermostating and handling of the liquid samples have been solved. Research and development is going on with emphasis on increasing the handling speed of samples. This focusses on the design of a very unconventional optical double- cuvette which allows for high speed flushing. While at OCEANS'84 the description of the foundations of the measuring principle stood in the foreground, critical data from performance tests are now to be reported on and discussed in detail.
可以实现功能强大的光学干涉式电子台式盐/密度计,甚至可以使用蒸馏水作为参考,而不是“标准海水”。就盐度而言,目前原型的主要规格是:精度: pm0.005精度:pm0.001,合理分辨率:0.0003。测量范围为S = 0…40。一个有利的特点是在连续流动中测量的固有可能性。解决了液体样品的恒温和处理问题。研究和开发正在进行,重点是提高样品处理速度。这集中在一个非常非常规的光学双试管的设计,允许高速冲洗。在1984年海洋学会议上,对测量原理基础的描述是最重要的,但现在将报告和详细讨论性能测试的关键数据。
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引用次数: 5
Open cycle-ocean thermal energy conversion: Experimental study of flash evaporation 开式循环-海洋热能转换:闪蒸实验研究
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160216
T. Fournier
France's Ocean Thermal Energy Conversion program has shown the feasibility and competitiveness of open or closed cycle systems for plants generating less than 20 MWe. The design of a 5 MWe shore-based pilot plant for Tahiti began in 1982. The second stage of the program now in progress will select the most effective cycle for the Tahiti plant. This paper presents initial experiments with the vertical-spout flash evaporator designed for the open cycle version. Results cover variable water flows in terms of the non-equilibrium pressure differences at the inlet and outlet, gas release, liquid entrainment and liquid-side pressure drop. Three modes of evaporation dictated by bubble bursting conditions are described and the effects of salinity, jet interaction and spout height are discussed.
法国的海洋热能转换项目已经证明了开式或闭式循环系统对发电量低于20兆瓦的电厂的可行性和竞争力。1982年开始为塔希提岛设计一座5兆瓦的岸上试验电站。目前正在进行的第二阶段计划将为塔希提核电站选择最有效的循环。本文介绍了为开式循环设计的立式喷口闪蒸器的初步试验。结果涵盖了不同水流量的进出口非平衡压差、气体释放、液体夹带和液侧压降。描述了由气泡破裂条件决定的三种蒸发模式,并讨论了盐度、射流相互作用和喷口高度的影响。
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引用次数: 5
Equipment and techniques developed for scientific exploration of oceanic caves 为科学勘探海洋洞穴而开发的设备和技术
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160116
J. Bozanic
Underwater cave divers using Scuba gear to perform scientific research (including measurement recording, biological collecting, geological sampling, and photographic recording) must overcome several unique problems to attain their goals. The equipment and methods have been developed over many years, and have been utilized on many underwater research expeditions in such places as the Bahamas, Canary Islands, Cayman Islands, Mexico, Republic of Palau, and the United States. Although these items were developed to meet specific needs and purposes, the potential for other ocean development/ measurement applications could be of interest to scientific and sport diver organizations and commercial firms.
使用水肺设备进行科学研究(包括测量记录、生物采集、地质采样和摄影记录)的水下洞穴潜水员必须克服几个独特的问题才能达到他们的目标。这些设备和方法经过多年的发展,已在巴哈马群岛、加那利群岛、开曼群岛、墨西哥、帕劳共和国和美国等地的许多水下研究探险中使用。虽然这些项目是为了满足特定的需要和目的而开发的,但其他海洋开发/测量应用的潜力可能会引起科学和体育潜水员组织和商业公司的兴趣。
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引用次数: 1
Digital acoustic communication in multipath underwater channels 水下多径信道数字水声通信
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160214
A. Zielinski, M. Caldera
A novel transmission scheme based on the Sliding Discrete Fourier Transform (SDFT) is proposed for communicating in multipath acoustic channel and its performance is evaluated by computer simulations. The system described uses constant envelope multifrequency signals and can tolerate large Doppler frequency shifts and strong multipath conditions. Beam diversity is suggested as an additional protection against signal fading caused by acoustic shadow zones. With the availability of VLSI circuits to implement the SDFT algorithm (such as the Recticon Quad Chirped Transversal Filter), the system is particularly attractive in situations where power and space conservation are of prime importance, as in remotely controlled submersibles.
提出了一种基于滑动离散傅立叶变换(SDFT)的多径声道通信新传输方案,并通过计算机仿真对其性能进行了评价。所描述的系统使用恒定包络多频信号,可以承受大的多普勒频移和强多径条件。波束分集被认为是防止声阴影区引起的信号衰落的额外保护。随着实现SDFT算法的VLSI电路的可用性(例如Recticon Quad Chirped横向滤波器),该系统在诸如远程控制潜水器等对功率和空间节约至关重要的情况下特别具有吸引力。
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引用次数: 5
Ice navigation studies in the Alaskan Arctic using POLAR Class icebreakers 使用POLAR级破冰船在阿拉斯加北极进行冰导航研究
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160229
L. Brigham, R. Voelker
The operational capability of the U.S. Coast Guard's POLAR Class icebreakers is reviewed for Alaskan ice covered waters. Operational capability is defined in terms of three distinct geographic areas: the Bering, Chukchi, and Beaufort Seas. POLAR Class icebreakers have successfully operated in each of these areas since 1979. As a result of the deployments, it is possible to draw conclusions on the relative environmental severity for each region and the impact of such ice conditions on POLAR Class operations. Pictorial representations illustrate the zones of environmental severity for each of the Alaskan seas. The paper suggests that POLAR Class icebreakers can operate year-round in the Bering Sea. Operations in the Chukchi Sea during winter are possible while winter transits into the Beaufort Sea are probably not feasible without refueling enroute. Ice navigation and ice piloting skills are deemed vitally important to the success of any Alaskan Arctic marine transportation system.
美国海岸警卫队极地级破冰船在阿拉斯加冰雪覆盖水域的作战能力进行了审查。作战能力是根据三个不同的地理区域来定义的:白令海、楚科奇海和波弗特海。自1979年以来,POLAR级破冰船已经成功地在这些地区运行。通过部署,可以得出每个地区的相对环境严重程度以及这种冰况对POLAR级作业的影响的结论。图片展示了阿拉斯加各海域的环境严重程度。论文建议POLAR级破冰船可以在白令海全年运行。冬季可以在楚科奇海作业,但如果不中途加油,冬季进入波弗特海可能是不可行的。冰上导航和冰上驾驶技术被认为对任何阿拉斯加北极海上运输系统的成功至关重要。
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引用次数: 1
The Ocean Drilling Program IV: Deep water coring technology-Past, present, and future 海洋钻探计划四:深水取心技术——过去、现在和未来
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160102
David, P., Huey, Michael A. Storms
Using the technology developed during 15 years of the highly successful Deep Sea Drilling Project (DSDP), the Ocean Drilling Program (ODP) is continuing to pursue both the scientific objectives of recovering core samples from beneath the world's oceans and the technical objectives of advancing the state-of-the-art of deep water coring. The wide variety of wireline coring tools developed during DSDP (1968-1983) which are still in use include a standard Rotary Core Barrel (RCB), a through-the-bit Extended Core Barrel (XCB) and a Pressure Core Barrel (PCB) for recovering cores at in situ pressures up to 5000 psi. All of these are variations of rotary coring done in conjunction with TCI roller cone core bits. Non-rotary coring tools and downhole instruments have included three generations of hydraulic piston corers for use in recovering undisturbed cores in unconsolidated sediments. The most recent version, the Advanced Piston Corer (APC), is about half as mechanically complex as its predecessors, yet delivers 76% greater coring thrust. Magnetic azimuth orientation for each piston core is available utilizing an Eastman multishot tool. A miniaturized electronic temperature measuring instrument can be used with the APC or a combined Heat Flow/Pore Water Sampler tool can be deployed in soft formations. Current ODP tool developments include a wireline retrievable hard rock coring tool, driven by a 3-3/4 inch diameter mud-motor. A sea floor structure to stabilize a hollow rotor 9-1/2 inch PDM mudmotor is being developed to start holes on hard rock with little or no sediment cover. Possibilities for future tool developments include: hydraulic sidewall samplers for hard rock or soft formations; in situ gas sampling in soft sediments; wireline retrievable downhole geotechnical instruments; a vibracorer to recover loose sands; and "smart" core barrels with the ability to interpret and adjust for changes in coring parameters.
利用深海钻探项目(DSDP) 15年来取得的巨大成功所开发的技术,海洋钻探计划(ODP)将继续追求从世界海洋下回收岩心样本的科学目标和推进最先进的深水取心的技术目标。在DSDP(1968-1983)期间开发的各种电缆取心工具仍在使用,包括标准的旋转取心桶(RCB),穿过钻头的扩展取心桶(XCB)和压力取心桶(PCB),用于在高达5000 psi的原位压力下回收取心。所有这些都是旋转取心的变化,与TCI牙轮取心钻头一起完成。非旋转取心工具和井下仪器包括三代液压活塞盖,用于回收松散沉积物中未受干扰的岩心。最新版本的先进活塞盖(APC)的机械复杂性仅为其前身的一半,但取心推力却提高了76%。利用伊士曼多射孔工具,可以对每个活塞芯进行磁方位定位。小型电子温度测量仪可以与APC一起使用,也可以将热流/孔隙水取样器组合工具部署在软地层中。目前开发的ODP工具包括电缆可回收的硬岩取心工具,该工具由直径3-3/4英寸的泥浆马达驱动。一种用于稳定中空转子9-1/2英寸PDM泥浆马达的海底结构正在开发中,用于在很少或没有沉积物覆盖的坚硬岩石上开孔。未来工具发展的可能性包括:用于硬岩或软地层的液压侧壁取样器;软质沉积物气体原位采样;电缆可回收井下岩土工程仪器;用来恢复松散沙子的振动器;“智能”取心筒具有解释和调整取心参数变化的能力。
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引用次数: 7
The NASA NSCAT and Topex/Poseidon programs NASA NSCAT和Topex/Poseidon项目
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160231
R. Stewart
The National Aeronautics and Space Administration, in support of global oceanographic studies and the large-scale oceanographic experiments of the World Climate Research Program, has begun a program to measure oceanic winds, currents, and tides from space. The two major elements of the program are: (a) A Nasa Scatterometer NSCAT to measure winds from space to be flown on the Navy's Remote Ocean Sensing System NROSS satellite; and (b) the Topex/Poseidon altimetric satellite to measure currents and tides. The NSCAT will measure surface wind speed and direction on a 50 km grid with an accuracy ofpm 2m/s andpm 20degalong 600 km wide swaths on either side of the spacecraft to provide near global coverage every two clays for three years. NSCAT is funded and launch is planned for September 1990. The combination of Nasa's Topex program with the Poseidon program of the French Centre National d'Etudes Spatiales, Topex/Poseidon, has led to plans to launch a joint altimetric satellite in February 1991 to measure sea-surface topography with an accuracy ofpm 14cm and a precision ofpm 2.4cm along a fixed global grid every 10 days for three years. These measurements will be used to calculate the time-varying and permanent surface geostrophic currents at the sea surface, oceanic tides, and ocean wave height.
为了支持全球海洋学研究和世界气候研究计划的大规模海洋学实验,美国国家航空航天局开始了一项从太空测量海洋风、洋流和潮汐的计划。该计划的两个主要组成部分是:(a) Nasa散射计NSCAT,用于测量来自太空的风,该散射计将在海军的远程海洋遥感系统NROSS卫星上飞行;(b) Topex/Poseidon测高卫星测量海流和潮汐。NSCAT将在50公里的网格上测量地面风速和风向,在航天器两侧600公里宽的狭长地带测量风速和风向,精度为每秒2米/秒和每秒20米/秒,每隔两天提供近全球覆盖,为期三年。NSCAT已得到资助,计划于1990年9月发射。Nasa的Topex项目与法国国家空间研究中心的Poseidon项目(Topex/Poseidon)相结合,计划在1991年2月发射一颗联合测高卫星,沿着固定的全球网格每10天测量一次海面地形,精度为14厘米,精度为2.4厘米,持续三年。这些测量将用于计算时变和永久的海面地转流、海洋潮汐和海浪高度。
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引用次数: 0
The public/private partnership: Ensuring the future of basic oceanographic research 公私伙伴关系:确保基础海洋学研究的未来
Pub Date : 1900-01-01 DOI: 10.1109/OCEANS.1985.1160152
D. Gower
How can the National Ocean Service (NOS) and private industry work together to best use our resources to realize the full potential for ocean use? The current Administration has emphasized the necessity of fostering strong private industry/government partnerships. In doing this, the government should provide basic research, but private industry must put it to work. NOS is fulfilling its mandate of providing basic oceanographic research and has established partnerships with industry in order to develop cooperative projects that are mutually beneficial and effect technology transfer. Through activities such as the NOAA Users' Conference and regional Project PORTS workshops, private industry has learned of NOS's services and NOS has increased its awareness of the oceanographic industry's needs. In order for NOS to continue to meet those needs, more attention must be focused on the importance and usefulness of applied oceanographic products. Only when the public is aware of the vast potential and applicability of ocean resources will the necessary support be found for basic oceanographic research.
国家海洋局(NOS)和私营企业如何共同努力,以最好地利用我们的资源,充分发挥海洋利用的潜力?本届政府强调必须促进私营企业与政府之间强有力的伙伴关系。为此,政府应该提供基础研究,但私营企业必须将其付诸实践。NOS正在履行其提供基础海洋学研究的任务,并与工业界建立了伙伴关系,以开发互利的合作项目并促进技术转让。通过NOAA用户会议和区域项目PORTS讲习班等活动,私营企业了解了NOS的服务,NOS也提高了对海洋学行业需求的认识。为了使海洋学服务继续满足这些需要,必须更加重视应用海洋学产品的重要性和有用性。只有公众意识到海洋资源的巨大潜力和适用性,才能为基础海洋学研究找到必要的支持。
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引用次数: 0
期刊
OCEANS '85 - Ocean Engineering and the Environment
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