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http://dx.doi.org/10.7848/ksgpc.2022.40.3.187

Analysis of Coastline Changes in Yeongdong Region Using Aerial Photos and CORONA Satellite Images  

Ahn, Seunghyo (Inter-Department Collabortory Program in Spatial Information Science, Gangneung-Wonju National University)
Kim, Gihong (Dept. of Civil Engineering, Gangneung-Wonju National University)
Lee, Hanna (Inter-Department Collabortory Program in Spatial Information Science, Gangneung-Wonju National University)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.40, no.3, 2022 , pp. 187-193 More about this Journal
Abstract
In the Yeongdong region of Gangwon-do, coastal areas are important resources in terms of cultural, social and economic aspects. However, the coast of Gangwon-do is experiencing severe erosion, and it is concerned that its adverse effects will gradually increase. In this study, coastline changes of Yangyang and Gangneung in Gangwon-do were tracked and analyzed over a long period of time. In order to build time series image data, aerial photos from the 1940s to the present were mainly used, and data from CORONA satellite, which operated from the 1960s to the early 1970s, were collected and used together. Using 51cm resolution ortho image and 2m resolution Digital Elevation Model(DEM) as reference, ground control points were selected to perform geometric correction on the aerial photos and CORONA images. Subsequently, Canny edge detector applied to these images to extract the coastlines. As a result of analyzing the extracted and vectorized coastlines by overlaying them in chronological order, erosion and deposition occurring around the artificial structures and on the nearby beaches were observed. In this study, the effect of seasonal variation, tide, and various coastal management including the beach filling were not considered. Because coastal erosion is greatly affected by geographic factors, each local government must find its own solution. Continuous research and local data accumulation are required.
Keywords
Coastline; Change Detection; Aerial Photograph; CORONA;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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