Proceedings of the KSRS Conference (대한원격탐사학회:학술대회논문집)
- 2007.10a
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- Pages.29-32
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- 2007
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- 1226-9743(pISSN)
FRACTAL ANALYSIS OF TIDAL CHANNEL USING HIGH RESOLUTION SATELLITE IMAGES
- Eom, Jin-Ah (Department of Earth System Sciences, Yonsei University) ;
- Lee, Yoon-Kyung (Department of Earth System Sciences, Yonsei University) ;
- Ryu, Joo-Hyung (KORDI, Ocean Satellite Research Group) ;
- Won, Joong-Sun (Department of Earth System Sciences, Yonsei University)
- Published : 2007.10.31
Abstract
Tidal channel development is influenced by sediment type, grain size, composition and tidal current. Tidal channels are usually characterized by channel development, density and shape. Quantitative analysis of tidal channels using remotely sensed data have rarely been studied. The objective of this study is to quantify tidal channels in terms of fractal dimension and compare different inter-tidal channel patterns. For the fractal analysis, we used Box counting method which had been successfully applied to streams, coastlines and others linear features. For a study, the southern part of Ganghwado tidal flats was selected where is famous for high dynamics of tidal currents and vast tidal flats. This area has different widths and lengths of tidal channels. IKONOS and Komsat-2 MSC images were used for extracting tidal channels, and the Box counting method was applied to obtain fractal dimensions (D) for each tidal channel. Yeochari area possesses channels with linear pattern and less dense development and accordingly show low D values ranging from 1.037 to 1.038. On other hands, area (near Donggumdo and Yeongjongdo ) of dendrites channel pattern and dense development resulted in high D values from 1.2057 to 1.2667. Also, area possesses channels with linear pattern had low density about