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Semidiurnal internal tides off the east coast of Korea inferred from synthetic aperture radar images
Author(s) -
Nam SungHyun,
Park JaeHun
Publication year - 2008
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2007gl032536
Subject(s) - geology , synthetic aperture radar , east coast , remote sensing , seismology , geodesy , oceanography
Semidiurnal internal tides propagating toward and along the east coast of Korea are elucidated from the surface manifestation of non‐linear internal wave (NLIW) packets in synthetic aperture radar (SAR) images taken on September 2, 1996. The SAR images reveal two pairs of NLIW packets, one on the northern side of the southwestern East (Japan) Sea and the other on the western side. The NLIW packets appear to be generated by the semidiurnal internal tide and influenced by a temperature front and bottom topography during their propagation. A geometric optics model simulates westward refraction of semidiurnal internal tides under the influence of a mesoscale circulation pattern during August 1996 and bottom shoaling. This westward refraction contrasts with the eastward refraction of two‐year‐mean vertical displacements and is consistent with the distribution of NLIWs seen in the SAR images.