PRELIMINARY RESULTS ON THE ANALYSIS OF GEOMORPHOLOGIC CHANGE OF THE TIDAL FLAT IN GOMSO BAY BY THE CONSTRUCTION OF SAEMANGEUM DYKE

Title
PRELIMINARY RESULTS ON THE ANALYSIS OF GEOMORPHOLOGIC CHANGE OF THE TIDAL FLAT IN GOMSO BAY BY THE CONSTRUCTION OF SAEMANGEUM DYKE
Author(s)
이윤경; 김계림; 우한준; 유주형; 최종국
KIOST Author(s)
Kim, Kye Lim(김계림)Woo, Han Jun(우한준)Ryu, Joo Hyung(유주형)Choi, Jong Kuk(최종국)
Publication Year
2013-05-17
Abstract
Gomso bay, a funnel-shaped embayment with 7-9 km wide and 20 km long, is located on 15 km south from the Saemangeum dyke which had the enormous reclamation works with 33 km long dyke from 1991 to 2006. Morphological change of tidal flats in Gomso bay were estimated based on the waterline mehod (Ryu et al., 2008) and change of suspended sediment around Gomso bay and Saemangeum area were investigated (Lee, 2010 Min et al, 2012). However, interactions between tidal flats and suspended sediment have not been studied. The purpose of this study was to quantitatively estimate geomorphologic change of the tidal flats in Gomso bay together with hydrodynamic approaches and sediment patterns for understanding the cause-and-effect of deposition and erosion by construction of Saemangeum dyke. The intertidal digital elevation models (DEMs) were generated for 1990, 2000 and 2010. Ground leveling was carried out along the 3 lines (KM, KH and KB line). Water samples for suspended sediment concentration (SS) were collected from 2005 to 2012 not only Gomso bay but also around Saemangeum area.The samples from 2012 included at the fixed points at about every 60 minutes from 9:30 to 16:30 at local time. The erosion was dominant in the outer Gomso bay area, especially at the front of the funnel-shaped area, whereas sedimentation was observed at the inner bay, especially eastern parts of Jujin stream. The chets in Gomso bay were estimated based on the waterline mehod (Ryu et al., 2008) and change of suspended sediment around Gomso bay and Saemangeum area were investigated (Lee, 2010 Min et al, 2012). However, interactions between tidal flats and suspended sediment have not been studied. The purpose of this study was to quantitatively estimate geomorphologic change of the tidal flats in Gomso bay together with hydrodynamic approaches and sediment patterns for understanding the cause-and-effect of deposition and erosion by construction of Saemangeum dyke. The intertidal digital elevation models (DEMs) were generated for 1990, 2000 and 2010. Ground leveling was carried out along the 3 lines (KM, KH and KB line). Water samples for suspended sediment concentration (SS) were collected from 2005 to 2012 not only Gomso bay but also around Saemangeum area.The samples from 2012 included at the fixed points at about every 60 minutes from 9:30 to 16:30 at local time. The erosion was dominant in the outer Gomso bay area, especially at the front of the funnel-shaped area, whereas sedimentation was observed at the inner bay, especially eastern parts of Jujin stream. The che
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/27061
Bibliographic Citation
International symposium of remote sensing, pp.1 - 4, 2013
Publisher
International
Type
Conference
Language
English
Publisher
International
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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