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http://dx.doi.org/10.7780/kjrs.2003.19.2.117

Characteristics of Landsat ETM+ Image for Gomso Bay Tidal Flat Sediments  

류주형 (연세대학교 지구시스템과학과)
최종국 (연세대학교 지구시스템과학과)
나영호 (연세대학교 지구시스템과학과)
원중선 (연세대학교 지구시스템과학과)
Publication Information
Korean Journal of Remote Sensing / v.19, no.2, 2003 , pp. 117-133 More about this Journal
Abstract
A field survey and Landsat ETM+ image acquisition carried out simultaneously. Using these data, we attempted to establish relationships between tidal flat environmental factors and reflectance observed by ETM+, and to set up a new critical grain size useful for optical remote sensing. Although the grain size of 4 $\Phi$ has been conventionally used as a critical size by sedimentologists, the correlation with optical reflectance was very low. Instead, the grain size of 2 $\Phi$ showed a relatively high correlation coefficient, 0.699, with ETM+ band 4, except near tidal channels in upper tidal flat. We concluded that the grain size of 2 $\Phi$ would be better to use for a critical grain size in Gomso Bay. The grain size also correlated well with moisture content having a correlation coefficient of -0.811 when the 2 $\Phi$ criterion was used. The results of factor analysis showed moisture content was more important parameter than topographic relief, and they were different from German tidal flats in which topographic relief was the prior factor This can be explained by finer grain composition of the Gomso bay tidal flat. In short, moisture content and topography as well as grain size should be considered in tidal flat remote sensing.
Keywords
Tidal Flat; Sediments; Gomso Bay; Landsat ETM+; Remote Sensing;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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