Evolution of the Surf Zone on a Macro-tidal Beach Observed using X-band Radar SCIE SCOPUS

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Title
Evolution of the Surf Zone on a Macro-tidal Beach Observed using X-band Radar
Author(s)
Yoo, Jeseon; Kim, Sang-Ik; Lee, Dong-Young; Park, Kwang-Soon; Shim, Jae-Seol; Jun, Ki-Cheon
KIOST Author(s)
Yoo, Jeseon(유제선)null전기천
Alternative Author(s)
유제선; 김상익; 이동영; 박광순; 심재설; 전기천
Publication Year
2011
Abstract
Yoo, J., Kim, S.-I., Lee, D.-Y., Park, K.-S., Shim, J.-S. and Jun, K.-C., 2011. Evolution of the surf zone on a macro-tidal beach observed using X-band radar. Journal of Coastal Research, SI 64 (Proceedings of the 11th International Coastal Symposium), 1676 - 1680. Szczecin, Poland, ISSN 0749-0208 This paper proposes a remote sensing technique to monitor surf zone processes. Specifically, we assessed tidal cycle-induced surf zone evolution on the Mallipo (Korea) sand beach by associating X-band radar images and transmitted wave-buoy data, in all weather conditions. Much of the west coast of Korea is bounded by dynamic macro-tidal sand beaches considerably influenced by wave breaking processes in the surf zone. Since wave dynamics on a macro-tidal beach can be significantly influenced by rapid and large changes of water depth, X-band radar image data were used to estimate wave attenuation coefficients, monitoring of which in the surf zone throughout the tidal cycle is essential in describing beach processes. To do this, an image pixel array defined along the cross-shore transect was collected from sequential radar images to generate a cross-shore image timestack. Thereafter, the surf-zone area evolving in time was identified from the image timestack using a line detection method. The computed widths of the surf zone in the cross-shore direction were compared to incident wave heights from the transmitted wave-buoy data, thereby estimating the dissipation rate of breaking waves across the surf zone. The attenuation coefficient on the Mallipo sand beach was found by this method to be 0.58 overall, which is not considerably different from earlier observations on micro-tidal beaches.
ISSN
0749-0208
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3965
Bibliographic Citation
JOURNAL OF COASTAL RESEARCH, pp.1676 - 1680, 2011
Publisher
COASTAL EDUCATION & RESEARCH FOUNDATION
Subject
PROFILE; WAVES; SEA
Keywords
Wave breaking; Inter-tidal zone; Wave attenuation coefficient; Beach monitoring
Type
Article
Language
English
Document Type
Article; Proceedings Paper
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