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Formation and Distribution of Low Salinity Water in East Sea Observed from the Aquarius Satellite

Aquarius 염분 관측 위성에 의한 동해 저염수의 형성과 유동 연구

  • Lee, Dong-Kyu (Department of Oceanography, College of Natural Science, Pusan National University)
  • 이동규 (부산대학교 자연과학대학 해양학과)
  • Received : 2018.03.26
  • Accepted : 2018.04.10
  • Published : 2018.04.30

Abstract

The monthly salinity maps from Aquarius satellite covering the entire East Sea were produced to analyze the low-salinity water appearing in fall every year. The low-salinity water in the northern East Sea began to appear in May-June, spreading southward along the coast and eastward north of the subpolar front. Low-salinity water from the East China Sea entered the East Sea through the Korea Strait from July to September and was mixed with low-salinity water from the northern East Sea in the Ulleung Basin. The strength of the low-salinity water from the East China Sea was dependent on the strength of the southerly wind of the East China Sea in July-August. The salinity reaches a minimum in September with a distribution parallel to the latitude of $37.5^{\circ}N$. In October, low salinity water is distributed along the mean current path and subpolar front and the entire East Sea is covered with the low salinity water in November. Water with salinity larger than 34 psu starts to flow into the East Sea through the Korea Strait in December and it expands gradually northward up to the subpolar front in January- February.

Keywords

References

  1. An HS. 1974. On the cold water mass around the southeast coast of Korean Peninsula. J Oceanol Soc Korea 9, 10-18.
  2. Bai Y, He X, Pan D, Chen CTA, Kang Y, Chen X and Cai WJ. 2014. Summertime Changjiang River plume variation during 1998-2010, J Geophys Res Oceans 119, 6238-6257. http://doi.org/10.1002/2014JC009866.
  3. Beardsley R C, Limeburner R, Kim K and Candela J. 1992. Lagrangian flow observations in the East China, Yellow and Japan Sea. La mer 30, 297-314.
  4. Byun SK and Seung YH. 1984. Description of current structure and coastal upwelling in the south-west Japan Sea-summer 1981 and spring 1982. In: Ichiye T (ed) Ocean Hydrodynamics of the Japan and East China Seas. Elsevier Oceanography Series 39, Amsterdam, 83-93.
  5. Jeong HD, Kim SW, Lim JW, Choi YK and Park JH. 2013. Time-series variation of sea surface salinity in the South-western East Sea. J Kor Soc Oceanogr 18, 163-177.
  6. Kim CH and Kim K. 1983. Characteristics and origin of the cold water mass along the east coast of Korea. J Kor Soc Oceanogr 18, 73-83.
  7. Lee DK and Lee JC. 2017. Distribution and Circulation of Autumn Low Salinity Water in the East Sea. Korean J Fish Aqua Sci 50, 207-218. http://doi.org/10.5657/KFAS.2017.0207.
  8. Lee DK, Kwon JI and Son SH. 2015. Horizontal distribution of salinity in summer inferred from total suspended sediment in the East China Sea. Acta Ocean Sinica 34, 44-50. http://doi.org/10.1007/s13131-015-0776-7.
  9. Lee DK and Niiler PP. 2005. The energetic surface circulation patterns of the Japan/East Sea. Deep Sea Res Pt II 52, 1547-1563. https://doi.org/10.1016/j.dsr2.2003.08.008.
  10. Lee DK and Niiler PP. 2010. Surface cirulation in the south-western Japan/East Sea as observed from drifters and sea surface height. Deep Sea Res Pt II 57, 1222-1232. https://doi.org/10.1016/j.dsr.2010.06.003.
  11. Lee DK, Seung YH, Kim YB, Kim YH, Shin HR, Shin CW and Chang KI. 2016. Circulation. In: Chang KI, Zhang CI, Park C, Kang DJ, Ju SJ, Lee SH and Wimbush M (eds). Oceanography of the East Sea (Japan Sea). Springer, Berlin, 87-126.
  12. Lee DK. 2016. Correction of Aquarius sea surface salinity in the East Sea. Ocean and Pol Res 38, 259-270. http://dx.doi.org/10.4217/OPR.2016.38.4.259.
  13. Martin S and Kawase M. 1998. The southern flux of sea ice in the Tatarskiy Strait, Japan Sea and the generation of the Liman Current. J Mar Res 56, 141-155. https://doi.org/10.1357/002224098321836145.
  14. Mori K, Matsuno T, Senjyu T, Hirose N and Han IS. 2009. Shortterm temperature and salinity variations in the Tsushima Strait in 2004: Behavior of the surface low-salinity water in the strait. J Oceanogr 65, 301-310. https://doi.org/10.1007/s10872-009-0028-6.
  15. Ostrovskii AG, Fukudome K, Yoon JH and Takikawa T. 2009. Variability of the Volume Transport through the Korea/Tsushima Strait as Inferred from the Shipborne Acoustic Doppler Current Profiler Observations in 1997-2007. Oceanology 49, 338-349. http://doi.org/10.1134/S0001437009030060.
  16. Park K, Kang CK, Kim KR and Park JE. 2014. Role of sea ice on satellite-observed chlorophyll a concentration variations during spring bloom in the East/Japan Sea. Deep-Sea Res Pt I 83, 34-44. https://doi.org/10.1016/j.dsr.2013.09.002.
  17. Park JH, Chang KI and Nam SH. 2016. Summertime coastal current reversal opposing offshore forcing and local wind near the middle east of Korea: obervation and dynamics. Geophys Res Lett 43, 7097-7105. https://doi.org/10.1117/12.864875.
  18. Senjyu T, Enomoto H, Matsuno T and Matsui S. 2006. Interannual salinity variations in the Tsushima Strait and its relation to the Changjiang discharge. J. Oceanogr 62, 681-692. https://doi.org/10.1007/s10872-006-0086-y.
  19. WOA (world ocean atlas). 2015. World ocean arlas 2013. Retriveved from www.nodc.noaa.gov/O5/woa13 on Feb 20, 2018.