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http://dx.doi.org/10.7780/kjrs.2020.36.6.2.10

Analysis of Tidal Channel Variations Using High Spatial Resolution Multispectral Satellite Image in Sihwa Reclaimed Land, South Korea  

Jeong, Yongsik (Satellite Application Division, Korea Aerospace Research Institute (KARI))
Lee, Kwang-Jae (Satellite Application Division, Korea Aerospace Research Institute (KARI))
Chae, Tae-Byeong (Satellite Application Division, Korea Aerospace Research Institute (KARI))
Yu, Jaehyung (Department of Geological Sciences, Chungnam National University)
Publication Information
Korean Journal of Remote Sensing / v.36, no.6_2, 2020 , pp. 1605-1613 More about this Journal
Abstract
The tidal channel is a coastal sedimentary terrain that plays the most important role in the formation and development of tidal flats, and is considered a very important index for understanding and distribution of tidal flat sedimentation/erosion terrain. The purpose of this study is to understand the changes in tidal channels by a period after the opening of the floodgate of the seawall in the reclaimed land of Sihwa Lake using KOMPSAT high-resolution multispectral satellite image data and to evaluate the applicability and efficiency of high-resolution satellite images. KOMPSAT 2 and 3 images were used for extraction of the tidal channels' lineaments in 2009, 2014, and 2019 and were applied to supervised classification method based on Principal Component Analysis (PCA), Artificial Neural Net (ANN), Matched Filtering (MF), and Spectral Angle Mapper (SAM) and band ratio techniques using Normalized Difference Water Index (NDWI) and MF/SAM. For verification, a numerical map of the National Geographic Information Service and Landsat 7 ETM+ image data were utilized. As a result, KOMPSAT data showed great agreement with the verification data compared to the Landsat 7 images for detecting a direction and distribution pattern of the tidal channels. However, it has been confirmed that there will be limitations in identifying the distribution of tidal channels' density and providing meaningful information related to the development of the sedimentary process. This research is expected to present the possibility of utilizing KOMPSAT image-based high-resolution remote exploration as a way of responding to domestic intertidal environmental issues, and to be used as basic research for providing multi-platform-image-based convergent thematic maps and topics.
Keywords
Multispectral Satellite Image; Remote Sensing; Tidal Channels; Lineament Extraction; KOMPSAT; High Spatial Resolution;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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