Browse > Article
http://dx.doi.org/10.3741/JKWRA.2022.55.9.669

A numerical study on rip currents at the Haeundae coast changed after the beach nourishment  

Choi, Junwoo (Coastal Research Laboratory, Department of Hydro Science and Engineering Research, Korea Institute of Civil Engineering & Building Technology)
Publication Information
Journal of Korea Water Resources Association / v.55, no.9, 2022 , pp. 669-678 More about this Journal
Abstract
The Haeundae beach and coast suffered synthetical dramatic changes especially in the nearshore topography by the beach nourishment project (i.e., 2013-2015). A previous study showed the rip current characteristics were changed according to the topographical change in terms of their magnitudes and likelihoods through numerical simulations using the FUNWAVE model. The magnitude and likelihood of rip currents decreased because the surfzone width decreased just after the beach nourishment. In this study, however, numerical simulations of the Haeundae rip currents were performed by using the 2017- and 2020-surveyed topographies changed for several years after the beach nourishment. From the simulation results using the topographies surveyed before and after the beach nourishment, it was found that the magnitude and likelihood of rip currents increased due to its increasing surfzone width in 2017 and 2020 and they might be increasing larger than those before the beach nourishment.
Keywords
Haeundae; Rip current; Beach nourishment; Numerical simulation; FUNWAVE;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Chen, Q., Dalrymple, R.A., Kirby, J.T., Kennedy, A.B., and Haller, M. (1999). "Boussinesq modelling of a rip current system." Journal of Geophysical Research, Vol. 104, pp. 20617-20637.   DOI
2 Choi, J. (2015a). "Numerical simulations of rip currents under phaseresolved directional random wave conditions." Journal of Korean Society of Coastal and Ocean Engineers, Vol. 27, No. 4, pp. 238-245 (in Korean).   DOI
3 Choi, J., Kirby, J.T., and Yoon, S.B. (2015). "Boussinesq modeling of longshore currents in the SandyDuck experiment under directional random wave conditions." Coastal Engineering, Vol. 101, pp. 17-34.   DOI
4 Clark, D.B., Elgar, S., and Raubenheimer, B. (2012) "Vorticity generation by short-crested wave breaking." Geophysical Research Letters, Vol. 39, No. 24, L24604. doi: 10.1029/2012GL054034   DOI
5 Feddersen, F. (2014). "The generation of surfzone eddies in a strong alongshore current." Journal of Physical Oceanography, Vol. 44, pp. 600-617.   DOI
6 Korea Hydrographic and Oceanographic Agency (KHOA) (2021). Report for operation of rip current warning system in 2021.
7 Mitsuyasu, H., Tasai, F., Suhara, T., Mizuno, S., Ohkusu, M., Honda, T., and Rikiishi, K. (1975). "Observations of the directional spectrum of ocean waves using a cloverleaf buoy." Journal of Physical Oceanography, Vol. 5, pp. 750-760.   DOI
8 Shin, C.H., Noh, H.K., Yoon, S.B., and Choi, J. (2014). "Understanding of rip current generation mechanism at Haeundae Beach of Korea: Honeycomb waves." Journal of Coastal Research, Vol. 72, No. sp1, pp. 11-15.   DOI
9 Yoon, S.B., Kwon, S.J., Bae, J.S., and Choi, J. (2012). "Investigation of characteristics of rip current at Haeundae beach based on observation analysis and numerical experiments." Journal of the Korean Society of Civil Engineers, Vol. 23, No. 4B, pp. 243-251 (in Korean).
10 Chen, Q., Kirby, J.T., Dalrymple, R.A., Kennedy, A.B., and Chawla, A. (2000). "Boussinesq modeling of wave transformation, breaking and runup II: two horizontal dimensions." Journal of Waterway, Port, Coastal and Ocean Engineering, Vol. 126, No. 1, pp. 48-56.   DOI
11 Chen, Q., Kirby, J.T., Dalrymple, R.A., Shi, F., and Thornton, E.B. (2003). "Boussinesq modeling of longshore current." Journal of Geophysical Research, Vol. 108, No. C11, pp. 26-1-26-18.
12 Choi, J. (2015b). "Numerical study on rip current likelihood according to the beach nourishment in the Haeundae Coast." Journal of Korean Society of Hazard Mitigation, Vol. 15, No. 5, pp. 239-246 (in Korean).   DOI
13 Choi, J., and Roh, M. (2021). "A laboratory experiment of rip currents between the ends of breaking wave crests." Coastal Engineering, Vol. 164, 103812.
14 Choi, J., Park, W.K., Bae, J.S., and Yoon, S.B. (2012). "Numerical study on a dominant mechanism of rip current at Haeundae Beach: Honeycomb pattern of waves." Journal of the Korean Society of Civil Engineers, Vol. 32, No. 5B, pp. 321-320 (in Korean).
15 Choi, J., Shin, C.H., and Yoon, S.B. (2013). "Numerical study on sea state parameters affecting rip current at Haeundae Beach: Wave period, height, direction and tidal elevation." Journal of Korea Water Resources Association, Vol. 46, No. 2, pp. 205-218 (in Korean).   DOI
16 Dalrymple, R.A. (1975). "A mechanism for rip current generation on an open coast." Journal of Geophysical Research, Vol. 80, pp. 3485-3487.   DOI
17 Dalrymple, R.A. (1978). "Rip currents and their causes." 16th International Conference of Coastal Engineering, Hamburg, Germany, pp. 1414-1427.
18 Johnson, D., and Pattiaratchi, C. (2006). "Boussinesq modelling of transient rip currents." Coastal Engineering, Vol. 53, pp. 419-439.   DOI
19 Long, J.W., and Ozkan-Haller, H.T. (2005). "Offshore controls on nearshore rip currents." Journal of Geophysical Research, Vol. 110, No. C12, C12007. doi: 10.1029/2005JC003018   DOI
20 Kennedy, A.B., Chen, Q., Kirby, J.T., and Dalrymple, R.A. (2000). "Boussinesq modeling of wave transformation, breaking, and runup. I: 1D." Journal of Waterway, Port, Coastal and Ocean Engineering, Vol. 126, pp. 39-47.   DOI
21 Long, J.W., and Ozkan-Haller, H.T. (2016). "Forcing and variability of nonstationary rip currents." Journal of Geophysical Research, Vol. 121, No. 1, pp. 520-539. doi: 10.1002/2015JC010990   DOI
22 Peregrine, D.H. (1998). "Surf zone currents." Theoretical and Computational Fluid Dynamics, Vol. 10, pp. 295-309.   DOI
23 Peregrine, D.H. (1999). "Large-scale vorticity generation by breakers in shallow and deep water." European Journal of Mechanics. B, Vol. 18, pp. 403-408.   DOI
24 Tang, E.C.-S., and Dalrymple, R.A. (1989). Nearshore circulation: Rip currents and wave groups. Advances in Coastal and Ocean Engineering. Plenum Press, New York, U.S., pp. 205-230.
25 Wei, G., Kirby, J.T., Grilli, S.T., and Subramanya, R. (1995). "A fully nonlinear Boussinesq model for surface waves: Part 1: Highly nonlinear unsteady waves." Journal of Fluid Mechanics, Vol. 294, pp. 71-92.   DOI