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The sea dynamics inferred from satellite sequential radiometry images

Research Project

Project/Area Number 05640479
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Meteorology/Physical oceanography/Hydrology
Research InstitutionKYUSHU UNIVERSITY

Principal Investigator

OSTROVSKII Alexander g.  Kyushu Univ.・Res.Inst.for Appl.Mech., Assc.Prof., 応用力学研究所, 助教授 (70243962)

Co-Investigator(Kenkyū-buntansha) UMATANI Shinichiro  Kyushu Univ.・Res.Inst.for Appl.Mech., Res.Assc., 応用力学研究所, 助手 (30112353)
IMAWAKI Shiro  Kyushu Univ.・Res.Inst.for Appl.Mech., Prof., 応用力学研究所, 教授 (40025474)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1994: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1993: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsSea surface temperature / NOAA satellite / COADS data / Fractal / Wavelet / Inversion / Advection / Diffusion / 赤外画像 / 日本海 / 乱流 / Western North Pacific / NOAA MCSST / COADS / fractal / wavelet / inversion / advection / heat flux
Research Abstract

1. The sea surface temperature (SST) data were acquired from the NOAA satellites radiometry surveys and deduced from the Comprehensive Ocean-Atmosphere Data Set Compressed Marine Reports. The Compiled data sets cover the Northwestern Pacific including the Japan Sea. The SST distri-butions represent an indirect result of the turbulence and currents in the upper ocean. The fractal, wavelet and inversion techniques were used to infer the sea dynamics from the sequen-tial fields of the sea surface temperature (SST).
2. For the first time the fractal dimension estimation and two-dimensional orthonormal wavelet transform techniques were applied to the satellite born SST images. The fractal and wavelet analyzes demonstrated the intermittence and multiscale phenomena in the the the Japan Sea surface temperature patterns. (1) The fractal dimension calculations indicated the chaotic behaviorof the upper sea dynamics. (2) The results of the wavelet analysis allowed to suggest that the autumn cooli … More ng leads to enhancement of the three dimensional mixing, while at the beginning of thespring heating the stably stratified conditions in the upper sea are favorable for stirring by eddies at scales ofthe geostrophic turbulence.
3. The original inversion methods were deeloped to obtain the sea near-surface velocities and mixing coefficients from time dependent distributions of passive tracers such as SST.(1) The first approach concerned the case of the transient flow. The unknown horizontal velocities, diffusion tensor and decaying rate in a conservation equation for SST are derived by means of a maximum likelihood (ML) estimator. In the numerical simulations it is shown that the ML esti-mator provides us with consistent estimates of the mixing coefficients for different resolu-tions of the data grid. Also it can provide reasonable advection velocities in a certain range of oceanic conditions of general interest. (2) The second approach was devoted to estimate of climatically mean advection-diffusion transport from the long time-series of observations. The unknown parameters were found by fitting a stochastic partial differential temperature conser-vation equation to the observed covariances of the winter SST anomalies over the Northwestern Pacific. The inversion was applied to the SST data averaged at 1deg latitude x 2deg longitude boxes on a 10-day mean basis from 1965 to 1990. The estimates of the net advection velocity are consistent in magnitude and direction with the general circulation in the surface layr of the Northwest Pacific in winter. The estimates of the diffusion coefficient were also reliable. The analysis supports Hasselmann's theory in which generation of midlatitude SST anomalies lasting the dominant timescale of atmospheric processes is primarily attributed to the short period stochastic weather forcing. However, the analysis indicates that the inertia of SST anomalies to their "memory" of earlier winds can not be neglected in the vicinity of the western boundary and in the tropics. Less

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] Bunimovich.I.A.,A.G.Ostrovskii and S.Umatani: "Observations of the fractal properties of the Japan Sea surface temperature patterns" Int.J.of Remote Sensing. 14. 2185-2201 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii,A.G.: "The Japan sea dynamics inferred from NOAA AVHRR infrared images" Proc.of Techno-Ocean'94 Int.Symp.17-22 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] アレクサンダーアストロフスキー・馬谷紳一郎・廣江豊: "衛星赤外画像から見た日本海の海洋循環-1993年秋の描像-" 月刊海洋科学. 26. 747-752 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Kondo T.,A.Ostrovskii,and S.Umatani: "Climatologies of the surface heat fluxes over the Japan sea" Proc.of the CREAMS'94 Intl.Symp.,Fukuoka,Japan. 29-42 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii A.and Y.Hiroe: "The Japan sea circulation as seen in satellite infrared imagery in autumn 1993." Proc.of the CREAMS'94 Intl.Symp.,Fukuoka,Japan. 75-88 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii A.: "On a heat anomaly transport in the Northwest Pacific." In:GOOS Newsletter. N1. 62-69 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii A.G.and L.I.Piterbarg: "Assimilation of COADS data in the stochastic SST anomaly model." Proc.of Second Intl.Symp.on Assimilation of Observations in Meterorology and Oceanography,World Meteorological Organization,. II. 539-544 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii A.G.and L.I.Piterbarg: "Inversion for the heat anomaly transport from sea surface temperature time series in the northwest Pacific" J.Geophys.Res.100(印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii,A.G.: "Advection,diffusion,and feedback as estimated with maximum likelihood method from time dependent distributions of passive tracer" Stochastic Modelling in Physical Oceanography,Springer-Verlag. (印刷中). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Bunimovich.L.A., A.G.Ostrovskii and S.Umatani: "Observations of the fractal properties of the Japan Sea surface temperature patterns" Int.J.of Remote Sensing. Vol.14. 2185-2201 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii, A.G.: "The Japan sea dynamics inferred from NOAA AVHRR infrared images" Proc.of Techno-Ocean'94 Int.Symp.17-22 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii, A.G., S.Umatani and Y.Hiroe: "The Japan sea circulation as seen in satellite infrared imagery in autumn 1993." Marine Science Monthly. Vol.26, No.12, (in Japanese). 747-752 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Konda T., A.Ostrovskii, and S.Umatani: "Climatologies of the surface heat fluxes over the Japan sea" Proc.of the CREAMS'94 Intl.Symp., Fukuoka, Japan. 29-42 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii A.and Y.Hiroe: "The Japan sea circulation as seen in satellite infrared imagery in autumn 1993." Proc.of the CREAMS'94 Intl.Symp., Fukuoka, Japan. 75-88 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii, A.G.: "On a heat anomaly transport in the Northwest Pacific." In : GOOS Newsletter. N1. 62-69 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii, A.and L.Piterbarg: "Assimilation of COADS data in the stochastic SST anomaly model." Proc.of Second Intl.Symp.on Assimilation of Observations in Meteorology and Oceanogra-phy, World Meteorological Organization, Tokyo, Japan. Vol.II. 539-544 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii, A.G.and L.I.Piterbarg: "Inversion for the heat anomaly transport from sea surface temperature time series in the northwest Pacific" J.Geophys.Res.Vol.100 (in press). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii, A.G.: "Advection, diffusion, and feedback as estimated with maximum likelihood method from time dependent distributions of passive tracer" Stochastic Modelling in Physical Oceanography, Springer-Verilg. (in press). 1995

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] Ostrovskii,A.G.: "The Japan sea dynamics inferred from NOAA AVHRR infrared images" Proc.of Techno-Ocean'94 Int.Symp.17-22 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] アレクサンダーオストロフスキー,馬谷紳一郎,廣江豊: "衛星赤外画像から見た日本海の海洋循環-1993年秋の描像-" 月刊海洋科学. 26. 747-752 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Ostrovskii,A.G.and L.I.Piterbarg: "Inversion for the heat anomaly transport from sea surface temperature time series in the northwest Pacific" J.Geophys.Res. 100(印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Ostrovskii,A.G.: "Advection,diffusion,and feedback as estimated with maximum likelihood method from time dependent distributions of passive tracer" Stochastic Modelling in Physical Oceanography,Springer-Verlag. (印刷中). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Bunimovich,L.A.: "Observations of the fractal properties of the Japan Sea surface temperature patterns." International Journal of Remote Sensing. 14. 2185-2201 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 鍵本崇: "高解像度海洋循環モデルによる海洋観測システム設計の研究" 海洋観測国際共同研究計画(GOOS)ニュースレター. 1. 54-73 (1994)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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