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2000 Fiscal Year Final Research Report Summary

Tracking and prediction of spilled oil in the Japan Sea by using multi-satellite sensor images and geographic information system

Research Project

Project/Area Number 10680503
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionKobe University of Mercantile Marine

Principal Investigator

KOZAI Katsutoshi  Kobe Univ.of Mercantile Marine, Associate Professor, 商船学部, 助教授 (30186613)

Co-Investigator(Kenkyū-buntansha) SAKAIDA Futoki  Kobe Univ.of Mercantile Marine, Associate Professor, 商船学部, 助教授 (20263410)
FUKUSHI Keiichi  Kobe Univ.of Mercantile Marine, Professor, 商船学部, 教授 (20108848)
ISHIDA Hiroshi  Kobe Univ.of Mercantile Marine, Professor, 商船学部, 教授 (60031473)
HIGASHIUWATOKO Tomohiko  Remote Sensing Technology Center Research, 解析研究部, 研究員
Project Period (FY) 1998 – 2000
KeywordsJapan Sea / geostrophic velocity / sea surface topography / along-track altimeter height gradient / geostrophic transport / Nakhodka bow section / sunken tanker Nakhodka / upwelling point of spilled oil
Research Abstract

Sea surface topography derived from TOPEX/POSEIDON altimeter data including the drifting period of Nakhodka bow section is investigated. Compared with the period before the accident the sea surface height north of Oki islands was raised about 80mm higher than the one at north of Noto Peninsula. As a result the spatial density of sea surface contour became dense at the sunken point south of JMA buoy and the direction of sea surface contour tends to align north-south direction. The sea surface gradient of the study area shows the difference of 140mm on sea surface height relative to the horizontal distance about 110km, which means the geostrophic current of about 0.24 knot with the south-south-east direction. Geostrophic velocities derived from along-track altimeter height gradients reveal the effect of small scale cyclonic eddy on the drifting path of Nakhodka bow section during the period of negligible wind influence.
Satellite altimetry using ERS-2 data has been applied to monitor and track upwelling points of spilled oil from the sunken tanker. Geostrophic surface transport estimated from ERS-2 altimeter data has been compared with in situ upwelling point location relative to the one of sunken tanker. It was found out that the larger the magnitude of surface transport, the longer the distance from the upwelling points to the location of sunken tanker. Furthermore the direction of surface transport correlates well with the azimuth of upwelling point relative to the location of sunken tanker.

  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 香西克俊,宮田義隆: "ナホトカ号漂流油の分光特性観測とLandsat TMへの適用"神戸商船大学紀要第2類商船理工学編. 第47号. 81-85 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 香西克俊: "ナホトカ号船首部漂流期間を含む日本海南部における衛星海面高度場の変動"海洋気象学会誌(海と空). Vol.75,No.2. 53-66 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 香西克俊: "TOPEX/POSEIDON衛星高度計による日本海南部海域の海面高度変動"海洋気象学会誌(海と空). Vol.75,No.3. 90-93 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Katsutoshi Kozai: "SPILLED OIL TRAJECTORY ASSESSMENT BY USING TOPEX/POSEIDON"International Archives of Photogrammetry and Remote Sensing. Vol.XXXIII,Supplement B7. 111-114 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Katsutoshi Kozai: "Nakhodka Oil Spill Monitoring by Satellite Altimeter"Proceedings of Korea-Japan Maritime Universities Young Researcher's Workshop. 45-48 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K.Kozai and T.Higashiuwatoko: "Integrating multiple satellite sensor data with GIS for simulating the path of spilled oil from Nakhodka in the Japan Sea"Proceedings of TECHNO-OCEAN2000 International Symposium. 203-206 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Katsutoshi Kozai, Yoshitaka Miyata: "Observation of spectral characteristics of drifting oil from Nakhodka and its application for Landsat TM (in Japanese with English abstract)"Review of Kobe University of Mercantile Marine Part II. Vol.47. 81-85 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Katsutoshi Kozai: "Variation of Satellite-derived Sea Surface Topography in the Southern Part of the Japan Sea Including the Drifting Period of Nakhodka Bow Section (in Japanese with English abstract)"Journal of the Marine Meteorological Society (UMI TO SORA). Vol.75, No.2. 53-66 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Katsutoshi Kozai: "Variation of Satellite-derived Sea Surface Topography in the Southern Part of the Japan Sea by using TOPEX/POSEIDON (in Japanese with English abstract)"Journal of the Marine Meteorological Society (UMI TO SORA). Vol.75, No.3. 90-93 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Katsutoshi Kozai: "SPILLED OIL TRAJECTORY ASSESSMENT BY USING TOPEX/POSEIDON"International Archives of Photogrammetry and Remote Sensing. Vol.XXXIII, Supplement B7, Amsterdam 2000. 111-114 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Katsutoshi Kozai: "Nakhodka Oil Spill Monitoring by Satellite Altimeter"Proceedings of Korea-Japan Maritime Universities Young Researcher's Workshop. 45-48 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Katsutoshi Kozai, Tomohiko Higashiuwatoko: "Integrating multiple satellite sensor data with GIS for simulating the path of spilled oil from Nakhodka in the Japan Sea"Proceedings of TECHNO-OCEAN 2000 Internatioanl Symposium. 203-206 (2000)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2002-03-26  

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