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Monitoring Variation of Tidal Channels associated with Shihwa Reclamation Project using Remote Sensing Approaches
원격탐사기반 시화호 간척사업과 갯골변화 관찰
Econ. Environ. Geol. 2019 Aug;52(4):299-312
Published online August 31, 2019;  https://doi.org/10.9719/EEG.2019.52.4.299
Copyright © 2019 the Korean society of economic and environmental gelology.

Chanhyeok Park1, Jaehyung Yu2*, Jieun Kim1 and Dong-Yoon Yang3
박찬혁1 ·유재형2* ·김지은1 ·양동윤3

1Department of Astronomy, Space Science, & Geology, Chungnam National University
2Department of Geological Sciences, Chungnam National University
3Geo-Environmental Hazard & Quaternary Geology Research Center, Korea Institute of Geoscience and Mineral Resources
1충남대학교 우주·지질학과, 2충남대학교 지질환경과학과, 3한국지질자원연구원 지질환경재해연구센터
Received August 12, 2019; Accepted August 27, 2019.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
 Abstract
This study analyzed variation of tidal channels associated with Shihwa reclamation project for corresponding observation period based on remote sensing approaches. The project period was subdivided to developing period, closed period, and open period based on developing and management plan of Shiwa lake, and number, length, width, and direction of tidal channels for each period were analyzed using CORONA, Landsat 5 TM, Landsat 7 ETM+, and orthorectified aerial photographs. Number of tidal channels decreased from developing to opening period while 3rd order channles did not show noticeable changes. The length of tidal channels decreased during developing to closed period, and increasing trend of 2nd and 3rd order channels was observed for the opening period. The average widtrh of 2nd and 3rd order channels decreased from developing to closed period, and increased during open period. The direction of tidal channels showed NW and NE direction in general, while the rose diagram showed deacrased frequency of NE direction and increased frequency of NW direction during the open period. These variations in tidal channels are considered to be related to changes in tidal energy environment, where stable energy environment before the project was changed to disconnection of tidal energy by closed environment, and re-connection of the energy during the open period.
Keywords : Shihwa, reclamation project, tidal channels, variation, remote sensing

 

October 2019, 52 (5)