Journal
ESTUARINE COASTAL AND SHELF SCIENCE
Volume 88, Issue 1, Pages 125-134Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ecss.2010.03.019
Keywords
surface sedimentary facies; IKONOS; intertidal DEM; GIS-based frequency ratio model; Hwangdo tidal flat
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Funding
- Korea Aerospace Research Institute [PN64790]
- Korea Research Council of Fundamental Science Technology
- Ministry of Education, Science and Technology [M105DA000004-08D0100-0011A]
- Korea Ocean Research & Development Institute [PE98462]
- National Research Council of Science & Technology (NST), Republic of Korea [PE98462] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2008-56355] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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High spatial resolution satellite data (IKONOS) combined with in situ data was used to quantitatively estimate the spatial distribution of tidal flat characteristics for the Hwangdo tidal flat, Cheonsu Bay, Korea. The classification result was accurate in terms of a comparison with the in situ data, and the overall accuracy was 90.7%, which confirmed the validity of the classification. GIS analysis based on a probabilistic model was applied to a quantitative estimation of the relationship between each surface sediment facies and the spectral reflectance. Mud flat facies showed. a high positive correlation (R-2 = 0.91), and sand flat facies showed a high negative correlation (R-2 = 1.00), which was a good reflection of the sedimentary characteristics of Hwangdo tidal flat. Relationships between each sediment facies and DEM also showed good agreement with the topographic characteristics in the study area. The study revealed that intertidal surface sediment classification using high resolution remote sensing imagery and in situ data successfully shows spectral and topographic characteristics of the study area. It was noted that spectral reflectance was affected by a combination of environmental factors, including grain size, topography, and remnant surface water. It is possible to determine the type of tidal flat through quantitative estimates of the spatial distribution of surface sediments according to their spectral reflectance. (C) 2010 Elsevier Ltd. All rights reserved.
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