DOI QR코드

DOI QR Code

Outbreak of Water Mass into the East Coast of Japan Evident in the Kuroshio Extension in June 2001

  • Yang Chan-Su (Korea Research Institute of Ships & Ocean Engineering, KORDI) ;
  • Suga Toshio (Institute of Observational Research for Global Change, JAMSTEC, Yokosuka, Japan, Department of Geophysics, Tohoku University)
  • Published : 2004.10.01

Abstract

The trajectories of 8 autonomous profiling floats deployed in the Kuroshio Extension region in February 2001 are used to depict the circulation pattern at the surface and 2000db. The corresponding sea surface topography maps created from satellite altimeter and dynamic height climatology were compared with the tracks of nearly coincident floats and were found to agree well in most cases except for the period June 5 to 16 2001. It is shown that over the period the conspicuous breakaway of the floats from an expected path is possibly associated with the abnormal path of the Kuroshio Extension such as an outbreak event, as revealed by AVHRR infrared and SeaWiFS chlorophyll-a images and cruise data in cross sections.

Keywords

References

  1. Argo Science Team, 2001. Argo: The global array of profiling floats, in Observing the Oceans in the 21st Century, edited by C. J. Koblinsky and N. R.Smith, GODAE Project Office, pp.248-258
  2. Bureau of Meteorology, Melbourne. Davis, R. E., D. C. Webb, L. A. Regier,and J. Dufour, 1992. The Autonomous Lagrangean Circulation Explorer (ALACE), J. Atmos. Ocean Technol., 9: 264-285 https://doi.org/10.1175/1520-0426(1992)009<0264:TALCE>2.0.CO;2
  3. Kawai, H., 1972. Hydrography of the Kuroshio Extension in Kuroshio, It’s Physical Aspects, edited Stommel, H. and K. Yoshida, pp. 235-352, Dniv. ofTokyo Press
  4. Kudo, H., 2001. Japan Image Database, SENEC, 27: 1525
  5. Kuragano, T. and M. Kamachi, 2000. Global statistical spacetime scales of oceanic variability estimated from theTOPEX/POSEIDON altimeter data, J. Geophy. Res., 105: 955-974 https://doi.org/10.1029/1999JC900247
  6. Lavender, S. J. and S. B. Groom, 1999. The SeaWiFS automatic data processing system, Int. J. Remote Sensing, 20: 1051-1056 https://doi.org/10.1080/014311699212830
  7. Macdonald, A. M., T. Suga, and R. G. Curry, 2001. An isopycnally averaged North Pacific climatology, J.Atmos. Ocean Technol., 18: 394-420 https://doi.org/10.1175/1520-0426(2001)018<0394:AIANPC>2.0.CO;2
  8. Okuda, K., I. Yasuda, Y. Hiroe, and Y. Shimizu, 2001. Structure of subsurface intrusion of the Oyashio water into the Kuroshio Extension and formation process of the North Pacific Interrnidiate Water, J. Oceanogr., 57: 121-140 https://doi.org/10.1023/A:1011135006278
  9. Toba, Y., H. Kawamura, K. Hanawa, H. Otobe, and K.Taira, 1991. Outbreak of warm water from the Kuroshio South of Japan-A combined analysis of satellite and OMLET oceanographic data, J.Oceanogr. Soc. Japan,47:297-303
  10. Talley, L. D., Y. Nagata, M. Fujimura, T. Kondo, D. Inagake, M. Hirai, and K. Okuda, 1995. North Pacific Intermediate Water in the Kuroshio/Oyashio mixed water region, J. Phys. Oceanogr., 25: 475-501 https://doi.org/10.1175/1520-0485(1995)025<0475:NPIWIT>2.0.CO;2
  11. Yang, C. S., 2000. Atmospheric and oceanic forcings on the spring coastal thermal environment in the Kuroshio/Oyashio Frontal Region, Coastal Eng. J., 42: 407-425
  12. Yasuda, I., K. Okuda, and Y. Shimizu, 1996. Distribution. and modification of North Pacific Intermediate Water in the Kuroshio-Oyashio interfrontal zone, J. Phys. Oceanogr., 26:448-465 https://doi.org/10.1175/1520-0485(1996)026<0448:DAMONP>2.0.CO;2