DOI QR코드

DOI QR Code

ERS SAR Observations of the Korean Coastal Waters

  • Published : 2007.02.28

Abstract

The processes of regional scales in the East Korean coastal waters were investigated by analysis of the Synthetic Aperture Radar (SAR) images taken by the European Research Satellites ERS-1, ERS-2 and Envisat. More than 500 quick look frames taken in 1991-2003 were examined to detect the frames with clearly surface expressions of oceanic phenomena. 26 ERS-1/2 SAR and 11 Envisat wide swath Advanced SAR (ASAR) frames were selected and obtained from the European Space Agency in a form of the precision high-resolution images. The following oceanic phenomena and processes were evident in the radar imagery through the Korean costal waters: fronts, currents, eddies, internal waves, island and ship wakes, oil pollution, etc. They manifested themselves in the field of sea surface roughness, their scale ranged from several tens meters to about 100 km. The most common morphology of these phenomena was a series of contrast dark or light curvilinear lines and bands. The joint analysis of the discussed SAR images with other satellite and in situ data supported and enhanced our interpretation of SAR signatures.

Keywords

References

  1. Alpers, W., 1995. Measurement of mesoscale oceanic and atmospheric phenomena by ERS-1 SAR. Radio Sci. Bull., 275: 14-22
  2. Alpers, W., L. Mitnik, L. Hock, and K.S. Chen, 2002. The Tropical and Subtropical ocean viewed by ERS-SAR. Available at: http://earth.esa.int/application/ERS-SARTropical
  3. Da Silva, J. C. B., S.A. Ermakov, I. S. Robinson, D. R. G. Jeans, and S. V. Kijashko, 1998. Role of surface films in ERS SAR signatures of internal waves on the shelf. I. Short-period internal waves. J. Geophys. Res., 103(C4): 8009-8031 https://doi.org/10.1029/97JC02725
  4. Johannessen J. A., R. A. Shuchman, G. Digranes, D. R. Lyzenga, C. Wackerman, O. M. Johannessen, and P. W. Vachon, 1996. Coastal ocean fronts and eddies imaged with ERS-1 synthetic aperture radar. J. Geophys Res., 101(C3): 6651-6668 https://doi.org/10.1029/95JC02962
  5. Nilsson C. S. and P. C. Tildesley, 1995. Imaging of oceanic features by ERS 1 synthetic aperture radar. J. Geophys. Res., 100(C1): 953-967 https://doi.org/10.1029/94JC02556