Ocean and Polar Research

  • 제31권2호
  • /
  • Pages.177-187
  • /
  • 2009
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  • 1598-141X(pISSN)
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  • 2234-7313(eISSN)
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)
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Variability of Surface Water Properties in the Japan/East Sea on Different Time Scales

  • Ponomarev, Vladimir (V.I. Il'ichev Pacific Oceanological Institute, POI Far Eastern Branch, Russian Academy of Sciences) ;
  • Rudykh, Natalya (V.I. Il'ichev Pacific Oceanological Institute, POI Far Eastern Branch, Russian Academy of Sciences) ;
  • Dmitrieva, Elena (V.I. Il'ichev Pacific Oceanological Institute, POI Far Eastern Branch, Russian Academy of Sciences) ;
  • Ishida, Hajime (Graduate School of Natural Science and Technology Kanazawa University)
  • 발행 : 2009.06.30
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초록

This study examined the multi-scale variabilities of sea surface temperature (SST) and salinity in the Japan/East Sea (JES) based on statistical analyses of observational data, with a focus on the northwestern part of the sea. The regionality of JES SST variability was estimated for different frequency ranges on semimonthly (11-17 days), monthly to seasonal (30-90 days), quasi-semiannual (157-220 days), and quasi-biennial (1.5-3 years) time scales using cluster analyses of daily gridded SST data for 1996 to 2007 from the Japan Meteorological Agency (JMA). Several significant peaks and regional cores were found in each frequency range of the SST anomaly (SSTA) oscillations. Quasi-semiannual SSTA oscillations with high amplitude were found in the south-southwestern part of the Japan Basin ($41-43^{\circ}N$) and were amplified in the area adjacent to Peter the Great Bay. Oscillations with periods of 79 and 55 days also prevailed over the southwest Japan Basin between the Yamato Rise and the continental slope. A similar method was applied to classify SST and the annual cycle of surface salinity using Generalized Digital Environmental Model (GDEM) gridded data. The Tatarskii Strait and adjacent area showed the most specific annual cycles and variability in salinity on interannual to interdecadal time scales. The most significant inverse relationship between surface salinity in the Tatarskii Strait and southern JES areas was found on the interdecadal time scale. Linkages of sea water salinity in the Tatarskii Strait with Amur River discharge and wind velocity over Amurskii Liman were also revealed.

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피인용 문헌

  1. Hydrological processes in the Amur Liman vol.43, pp.4, 2016, https://doi.org/10.1134/S009780781604014X