A STUDY ON THE CHARACTERISITCS OF THE SEDIMENTARY ENVIRONMENTS BY USING SAR DATA IN THE GANGHWA TIDAL FLAT

Title
A STUDY ON THE CHARACTERISITCS OF THE SEDIMENTARY ENVIRONMENTS BY USING SAR DATA IN THE GANGHWA TIDAL FLAT
Author(s)
김계림; 김상완; 유주형; 원중선
KIOST Author(s)
Kim, Kye Lim(김계림)Ryu, Joo Hyung(유주형)
Publication Year
2008-07-07
Abstract
The Ganghwa tidal flat is located on the west coast of Korea. This area is covered by the sand, mud and mixed (sandy/muddy) sediments where the grain-size is coarser to the seaward and finer to the eastern flat. The objectives of this study are to characterize the sedimentary environments based on the analysis of correlation between SAR data and factors of sedimentation. We used both the backscattering coefficient of JERS-1, ENVISAT, ERS-2 and ALOS images and the coherence of interferometric pair. In the results of our analysis, we found a relationship between SAR-derived measurements and in-situ sediment grain-size. The backscattering coefficient appeared to be greater in the region containing more of sand fraction because of the coarser grain-size and rougher surface. The coarse grain such as sand-sized sediment was more affected by the tide since the coarser grain-size has the smaller viscosity. Therefore the coherence is lower in the sand dominant area.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29863
Bibliographic Citation
2008 IGARSS, pp.1, 2008
Publisher
GARSS
Type
Conference
Language
English
Publisher
GARSS
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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