PRELIMINARY STUDY OF INTERNAL SOLITARY WAVE AMPLITUDE OFF THE EAST COAST OF KOREA BASED ON SYNTHETIC APERTURE RADAR DATA SCIE SCOPUS

Cited 1 time in WEB OF SCIENCE Cited 1 time in Scopus
Title
PRELIMINARY STUDY OF INTERNAL SOLITARY WAVE AMPLITUDE OFF THE EAST COAST OF KOREA BASED ON SYNTHETIC APERTURE RADAR DATA
Author(s)
Hong, Dan-Bee; Yang, Chan-Su; Ouchi, Kazuo
KIOST Author(s)
Yang, Chan Su(양찬수)
Publication Year
2016-12
Abstract
This paper presents a method of retrieving the amplitude of oceanic internal solitary wave (ISW), from synthetic aperture radar (SAR) data, and preliminary results obtained in the East/Japan Sea off the east coast of Korean Peninsula. The retrieval algorithms include the small perturbation method (SPM) for microwave backscatter, the action balance equation (ABE) for describing the interaction between wind-generated ocean waves and varying surface current, and also the Korteweg-deVries (KdV) (non-linear partial differential) equation for describing the surface current variation induced by an internal soliton. The radar cross section (RCS) was computed, and the ISW amplitude was estimated by fitting the RCS ratio to the SAR image of ISWs acquired by RADARSAT-1 through the ABE and KdV. Assuming that ISWs propagate along an isotherm between 5 degrees C and 10 degrees C as a boundary between upper and lower layers, ISW amplitude was estimated in the range of 12.5 m similar to 52.5 m. Although no in-situ data are available to validate the results, this study is the first of its kind to obtain the underwater information by SAR in the east coast of Korea.
ISSN
1023-2796
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2148
DOI
10.6119/JMST-016-1026-8
Bibliographic Citation
JOURNAL OF MARINE SCIENCE AND TECHNOLOGY-TAIWAN, v.24, no.6, pp.1194 - 1203, 2016
Publisher
NATL TAIWAN OCEAN UNIV
Subject
OCEAN IMAGING MODEL; SOUTH CHINA SEA; SAR IMAGES; ANDAMAN SEA; GENERATION; SOLITONS; SURFACE; TIDES; MODULATION; SCATTERING
Keywords
synthetic aperture radar; internal solitary wave amplitude; varying surface currents; small perturbation method; Korteweg-deVries equation; action balance equation
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
NATL TAIWAN OCEAN UNIV
Related Researcher
Research Interests

Satellite Oceanography,Marine Safety & Security,Remote Sensing,위성해양학,해양 안전 및 보안,원격탐사

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