Experimental studies of the thermohaline structure at the continental slope in the northwestern Japan Sea

  • A. Yu. Lazaryuk V.I. Ilyichev Pacifc Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences
  • D. D. Kaplunenko V.I. Ilyichev Pacifc Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences
  • A. G. Ostrovskii Shirshov Institute of Oceanology, Russian Academy of Sciences
  • V. B. Lobanov V.I. Ilyichev Pacifc Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences
  • O. O. Trusenkova V.I. Ilyichev Pacifc Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences
  • S. Yu. Ladychenko V.I. Ilyichev Pacifc Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences
DOI 10.29006/1564-2291.JOR-2017.45(1).5
Keywords CTD data analysis, moored profiler, infrared satellite imagery, ocean thermohaline structure, mesoscale eddy, the Japan Sea, the Primorye Current, 4D oceanography

Abstract

The pioneering long-term survey of the NW Japan Sea thermohaline structure was implemented for almost half a year from April 18, 2015 through October 15, 2015. The measurements were carried out by using the SBE 52-MP CTD probe at the moored profiler Aqualog. The profiler mooring was deployed at the continental slope in the area east of Peter the Great Bay. A novel approach to the primary processing of the profiler CTD data is discussed. It features a new data processing software CTD data_cor_SBE_52-МР. The profiler data is verified based on ship measurements at a cross-slope transect on May 30, 2015. The processing and verification of the SBE 52-MP CTD observations allows for the data quality improvement up to the WOCE standards. The profiler mooring data and the ship measurements reveal variations in the ocean temperature, salinity, and density stratification due to ocean eddy passage nearby the mooring site. The NOAA/AVHRR infrared satellite imagery is used for detection and analysis of this eddy and its movement southwestward along the Primorye Current zone. Overall, the study demonstrates a powerful potential of combined analysis of long-term time series of the in situ data at fixed geographical location, the ship borne oceanographic section, and the multispectral satellite information in compliance with the 4D oceanography requirements.

Author Biography

A. Yu. Lazaryuk, V.I. Ilyichev Pacifc Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences

A.Yu. Lazaryuk, D.D. Kaplunenko, A.G. Ostrovskii, V.B. Lobanov, O.O. Trusenkova, S.Yu. Ladychenko

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Journal of Oceanological Research
Published
2017-12-28
Issue
Vol 45 No 1 (2017): Journal of Oceanological Research
Section
Ocean physics and climate

Transfer of copyrights occurs on the basis of a license agreement between the Author and Shirshov Institute of Oceanology, RAS

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