By Topic

OCEANS '04. MTTS/IEEE TECHNO-OCEAN '04

Date 9-12 Nov. 2004

Go

Filter Results

Displaying Results 1 - 25 of 99
  • Experimental study on stability of a caisson type quay wall by the artificial drain method using recycle material during earthquake

    Publication Year: 2004, Page(s):2092 - 2097 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (736 KB) | HTML iconHTML

    In order to improve earthquake-proof capacity of a caisson type quay wall, a series of shaking table model tests was performed using the new artificial drain system as a countermeasure against soil liquefaction. The tests were conducted under earthquake input motions, making the maximum acceleration level change. The results from these experiments indicate that the drainage provided by recycle art... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Study on corrosion degradation of wire ropes in sea water

    Publication Year: 2004, Page(s):1910 - 1917 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (944 KB) | HTML iconHTML

    Wire ropes used in marine environment have a great degradation due to corrosion. Accurate inspection methods for corrosion of wire ropes are necessary to ensure their safety. However, technical background data of corrosion is quite few at present, and is not sufficient for wire rope inspection. Collecting the technical data is important to establish and ensure the offshore structure's maintenance ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Extreme events in ocean currents through depth in the vicinity of the Iceland-Scotland Ridge

    Publication Year: 2004, Page(s):2331 - 2337 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (846 KB) | HTML iconHTML

    This study analyses the vertical structure of extreme currents for three sections in the vicinity of the Iceland-Scotland Ridge. The variation of speed and direction with depth of observational currents from the Variability of Exchanges in the Northern Seas (VEINS) project is studied. Currents have been divided into (1) the mean residual flow, (2) tidal current and (3) nontidal surge residuals to ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Implementation of multi-vessel tracking algorithm using multiple marine radar systems

    Publication Year: 2004, Page(s):2242 - 2248 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (717 KB) | HTML iconHTML

    To prevent marine casualties, marine radars are widely used for tracking vessels near coast and, in general, multiple marine radars are applied to cover wide coastal area. Therefore their cooperative operation is very important for effective vessel traffic control. This work introduces implementation of a multivessel, multiradar tracking algorithm which can be used for such purpose. The implemente... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Basic requirements and options for communication systems in scientific underwater cable networks

    Publication Year: 2004, Page(s):2211 - 2218 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (926 KB) | HTML iconHTML

    New innovative scientific underwater cable networks have been proposed and initiated in many locations around the world. These networks have become feasible due to recent evolution of underwater telecommunication cable technology. However, their communication systems are quite different from standard telecommunication cable systems. Differences between the characteristics of existing submarine tel... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A basic research on the long horizontal active time reversal communication

    Publication Year: 2004, Page(s):2219 - 2224 Vol.4
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB) | HTML iconHTML

    We have researched on the application of time reversal waves to the underwater acoustic technology. Time reversal waves enable a desired signal to converge to the focus, even in unknown and inhomogeneous media. As time reversal waves converge to a "point" at any range, their focusing property is quite different from that of the conventional beam forming method. In this work, the results of the bas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Oceans '04 MTS/IEEE Techno-Ocean '04 (IEEE Cat. No.04CH37600)

    Publication Year: 2004
    Request permission for commercial reuse | PDF file iconPDF (160 KB)
    Freely Available from IEEE
  • [Blank page]

    Publication Year: 2004, Page(s): 0_2
    Request permission for commercial reuse | PDF file iconPDF (3 KB)
    Freely Available from IEEE
  • [Blank page]

    Publication Year: 2004, Page(s): 0_3
    Request permission for commercial reuse | PDF file iconPDF (3 KB)
    Freely Available from IEEE
  • [Blank page]

    Publication Year: 2004, Page(s): 0_4
    Request permission for commercial reuse | PDF file iconPDF (3 KB)
    Freely Available from IEEE
  • OCEANS '04 - MTS/IEEE TECHNO-OCEAN 04 - Title Page

    Publication Year: 2004, Page(s): i
    Request permission for commercial reuse | PDF file iconPDF (32 KB)
    Freely Available from IEEE
  • Copyright

    Publication Year: 2004, Page(s): ii
    Request permission for commercial reuse | PDF file iconPDF (46 KB)
    Freely Available from IEEE
  • Author's index

    Publication Year: 2004, Page(s):vii - xxiii
    Request permission for commercial reuse | PDF file iconPDF (793 KB)
    Freely Available from IEEE
  • [Blank page]

    Publication Year: 2004, Page(s): xxiv
    Request permission for commercial reuse | PDF file iconPDF (3 KB)
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2004, Page(s):xxv - lviii
    Request permission for commercial reuse | PDF file iconPDF (1553 KB)
    Freely Available from IEEE
  • Wave effect on microwave scattering at water surface

    Publication Year: 2004, Page(s):1803 - 1806 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    Microwave scattering at the water surface where a water surface wave coexisted with wind-waves was measured in an experimental water tank. Scattering characteristics, scattering coefficients and Doppler spectra of backscattering microwaves and the relation between scattering characteristics and physical properties of a water surface wave such as wave length, wave height, wave phase and orbital vel... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A long baseline kinematic GPS solution of ionosphere-free combination constrained by widelane combination

    Publication Year: 2004, Page(s):1807 - 1814 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB) | HTML iconHTML

    Why can't the dual frequency long baseline kinematic positioning be solved accurately? In kinematic positioning, the coordinates changes epoch by epoch, and the number of the observation equations per unknown does not increase. Hence, the averaging effect of the least square solution can't work well in contrast to the static positioning. So, when the baseline length is long and the error increases... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An integrated approach of remote sensing and geophysics for investigating geological structure in the East Vietnam Sea

    Publication Year: 2004, Page(s):1815 - 1820 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (606 KB) | HTML iconHTML

    The East Vietnam Sea (South China Sea) is a large area with the diversely complicated conditions of geological structure. In spite of over the past many years of investigation, many marine places have remained poorly understood because of a thick seawater layer as well as of the sensitive conflicts among the countries in the region. Fortunately, satellite altimeter technology is allowing the enhan... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Airborne polarimetric SAR monitoring for ships and coastal seas

    Publication Year: 2004, Page(s):1821 - 1824 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB) | HTML iconHTML

    Airborne polarimetric and interferometric synthetic aperture radar (PiSAR) images are analyzed for monitoring ships and coastal seas especially for estimating sea surface wind speed and direction. Though in situ ships data through AIS (Automatic Identification System) were not available by the time of analysis, PiSAR's X band images showed the potential to map coastal wind vectors with high... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Offshore wind profile observation system on a floating buoy

    Publication Year: 2004, Page(s):1825 - 1829 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (417 KB) | HTML iconHTML

    To detect the availability of wind farms, it is important to evaluate their profitability based on actual wind data. In case of an offshore wind farm, especially in deeper waters, we can not find any actual measured data to evaluate it. In Europe, the data are gained with a conventional meteorology tower mounted on the seabed in shallow water. However some offshore wind farms which may be expected... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Survey report of offshore wind conditions in prospect of offshore wind energy conversion systems in Japan

    Publication Year: 2004, Page(s):1830 - 1834 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (411 KB) | HTML iconHTML

    Wind energy is viewed as a promising new energy resource in its pure, clean, and inexhaustible nature. Because of less disturbed, stable and strong wind conditions, coastal areas are considered to be suitable for constructing wind energy systems. Moreover, it is said that offshore wind conditions are better than inshore wind conditions for power generation. However, actual measured reports of offs... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Field test and numerical simulation on the coastal wind-powered light system

    Publication Year: 2004, Page(s):1835 - 1840 Vol.4
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB) | HTML iconHTML

    This paper introduces field test and numerical simulation on coastal wind-powered light and battery system, as one typical example of on-site wind power utilization. Field experiment was conducted at the Kurihama coast facing to the entrance of the Tokyo Bay. The experimental system with 12W powered light was set to operate daily 6 hours after sunset. Wind velocity and direction at the three point... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Construction of the first offshore wind turbines in Setana Port in Japan

    Publication Year: 2004, Page(s):1841 - 1846 Vol.4
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (638 KB) | HTML iconHTML

    Two 600 kW wind turbines were built in the Setana Port area in summer 2003, and started official electric generation from April 1st, 2004. They are the very first wind turbines built in the offshore area in Japan. In Hokkaido, there are many wind energy development projects on land, and of course there are many wind turbines operating in Tohoku area, northern part of Honshu Island, too. While offs... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • LPV technique for rotational speed control of wind turbines using measured wind speed

    Publication Year: 2004, Page(s):1847 - 1853 Vol.4
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (390 KB) | HTML iconHTML

    In the paper, we apply LPV (linear parameter varying) control methodology for the rotational speed control problems of wind turbines. Our goals are extracting maximum power in the region below the rated wind speed and maintaining the rated power in the region over the rated wind speed. Effectiveness of the LPV control is shown by means of numerical simulations, compared with results by conventiona... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • AquaBuOY - the offshore wave energy converter numerical modeling and optimization

    Publication Year: 2004, Page(s):1854 - 1859 Vol.4
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (547 KB) | HTML iconHTML

    Ocean energy and offshore wave energy conversion in the United States is at a significant milestone. During the next couple of years, ocean energy technology developers and energy officials have a potential to deploy pilot scale ocean energy conversion installations. This capability comes at a time of increased interest in ocean energy worldwide. The paper outlines AquaEnergy's experience in devel... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.