title: Satellite-based observations of unexpected coastal changes due to the Saemangeum Dyke construction, Korea.
abstract: Spatial and temporal changes around an area of conventional coastal engineering can be easily observed from field surveys because of the clear cause-and-effect observable in the before and after stages of the project. However, it is more difficult to determine environmental changes in the vicinity of tidal flats and coastal areas that are a considerable distance from the project. To identify any unexpected environmental impacts of the construction of Saemangeum Dyke in the area, we examined morphological changes identified by satellite-based observations through a field survey on Gomso Bay tidal flats (15km from Saemangeum Dyke), and changes in the suspended sediment distribution identified by satellite-based observations through a hydrodynamic analysis in the Saemangeum and Gomso coastal area. We argue that hydrodynamic changes due to conventional coastal engineering can affect the sedimentation pattern in the vicinity of tidal flats. We suggest that the environmental impact assessment conducted before a conventional coastal engineering project should include a larger area than is currently considered.
authors.affiliation: Korea Ocean Satellite Center, Korea Institute of Ocean Science & Technology, 787 Haean-ro, Ansan 426-744, Republic of Korea.
authors.forename: Yoon-Kyung
authors.initials: YK
authors.lastname: Lee
authors.affiliation: Korea Ocean Satellite Center, Korea Institute of Ocean Science & Technology, 787 Haean-ro, Ansan 426-744, Republic of Korea. Electronic address: jhryu@kiost.ac.kr.
authors.forename: Joo-Hyung
authors.initials: JH
authors.lastname: Ryu
authors.affiliation: Korea Ocean Satellite Center, Korea Institute of Ocean Science & Technology, 787 Haean-ro, Ansan 426-744, Republic of Korea.
authors.forename: Jong-Kuk
authors.initials: JK
authors.lastname: Choi
authors.affiliation: Physical Oceanography Division, Korea Institute of Ocean Science & Technology, 787 Haean-ro, Ansan 426-744, Republic of Korea.
authors.forename: Seok
authors.initials: S
authors.lastname: Lee
authors.affiliation: Marine geology & Geophysics Division, Korea Institute of Ocean Science & Technology, 787 Haean-ro, Ansan 426-744, Republic of Korea.
authors.forename: Han-Jun
authors.initials: HJ
authors.lastname: Woo
mesh_terms: D061006:Bays; D060389:Construction Industry; D004777:Environment; D004784:Environmental Monitoring / Q000379:methods; D056910:Republic of Korea; D063809:Satellite Imagery
keywords: Coastal water; GOCI; Landsat; Morphological change; Suspended sediment; Tidal flat