MORPHOLOGICAL RESPONSE OF A NOURISHED BEACH WITH BURIED GROINS TO A SERIES OF WINTER STORMS
Palavras-chave:Seasonal beach changes, Winter storms, Hard structures, Coastal processes, New Jersey
Ortley Beach, located along the Atlantic coast of New Jersey, is an erosional hot spot with shore protection measures including beach nourishment and a buried groin field. 5 beach profiles were measured with dense spatial (about 100 m apart along the shoreline) and temporal intervals (2-3 weeks) from February 10 to May 12 in 2023. During the energetic winter season from February 10 to March 17, a large longshore variation of beach changes was measured. Beach accretion was observed at southern part of the study area due to impoundment effect of buried groin interacting with northerly-directed longshore sediment transport. Severe beach/dune erosion was measured at profiles at the northern part of the study area adjacent to the downdrift of the groin field. The shoreline offset did not occur exactly at the place of the groin, instead sediment bypassed the buried groin and the deposition extended tens of meters downdrift of the groin. Later, as the weather transitioned to spring, the frequency and intensity of large waves subside, substantial beach accretion occurred at all the measured beach profiles. Another winter storm in late April eroded the beaches back to the previous stage. With wider pre-storm beach profile, no distinctive shoreline offset was created by buried groin field induced by this storm in late April. This suggests the status of the pre-storm beach profile playing an important role in controlling long-shore variations of beach changes. Systematic beach profile monitoring is essential to investigate the threshold of beach width for the occurrences of shoreline offset induced by the buried groins. In addition, this study was conducted with undergraduate students when the coastal study program at Kean University (Hispanic-Serving Institution) just started, thus it can also serve as an example in initiating and conducting field-based coastal research with students.
BARONE, D.A., MCKENNA, K.M., FARRELL, S.C. 2014. Hurricane Sandy: Beach-dune performance at New Jersey beach profile network sites. 82(4): 13-23.
CHENG, J. and WANG, P., 2018. Dynamic equilibrium of sandbar position and height along a low wave energy micro-tidal coast. Continental Shelf Research, 165: 120-136.
CHENG, J. and WANG, P., 2019. Unusual beach changes induced by hurricane Irma with a negative storm surge and post storm recovery. Journal of Coastal Research, 35(6): 1185-1199.
CLAUDINO-SALES VANDA, Wang, P., Horwitz, M.H. Factors controlling the survival of coastal dunes during multiple hurricane impacts in 2004 and 2005: Santa Rosa barrier island, Florida. Geomorphology, 95 (3-4): 295-315.
HOUSTON, J.R., 2022. Beach nourishment provides resilient protection for critical coastal infrastructure. Shore & Beach, 90 (2): 19-32.
HATZIKYRIAKOU, A., LIN, N., GONG, J., XIAN, S., HU, X., KENNEDY, A., 2015. Component-based vulnerability analysis for residential structures subjected to storm surge impact from Hurricane Sandy. Nature Hazards Rev. 05015005.
HAUPTMAN, L., PALAPARTHI, J., and BRIGGS, T.R., 2022. Beach morphology and sedimentology in northern Palm Beach County, Florida, USA: A brief update. William Morris Davis Journal of Geomorphology, 3 (1):1-15.
LIN, L.; DEMIRBILEK, Z., and MASE, H., 2011. Recent capabilities of CMS-Wave: A coastal wave model for inlets and navigation projects. In: ROSATI, J.D.; WANG, P., and ROBERTS, T.M. (eds.). Proceedings, Symposium to Honor Dr. Nicholas C. Kraus. Journal of Coastal Research, Special Issue 59: 7–14.
LEMKE, L. and MILLER, J.K. 2017. EOF analysis of shoreline and beach slope variability at a feeder beach constructed within a groin field at Long Branch. Coastal Engineering, 14-25.
ROBERTS, T.M. and WANG, P., 2012. Four-year performance and associated controlling factors of several beach nourishment projects along three adjacent barrier islands in West-Central Florida, USA. Coastal Engineering, 70: 29-39.
WANG, P., ADAM, J.D., CHENG, J., VALLEE, M., 2020. Morphological and sedimentological impacts of hurricane Michael along the northwest Florida coast. Journal of Coastal Research, 36(5): 932-950.
ZIMMERMAN, T, MILLER, JK. 2021. UAS-SFM approach to evaluate the performance of notched groins within a groin field and their impact on the morphological evolution of beach nourishment, Coastal Engineering, 170: 103997.
Copyright (c) 2023 JUN CHENG, CHRISTIANA FIOCCO, MICHAEL HEUSER, AMY JOHNSON, ERIN MCGRATH
Este trabalho está licenciado sob uma licença Creative Commons Attribution 4.0 International License.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Autores que publicam nesta revista concordam com os seguintes termos:
- Autores mantém os direitos autorais e concedem a William Morris Davis o direito de primeira publicação, com o trabalho simultaneamente licenciado sob a Creative Commons Attribution License (CC-BY 4.0), que permite o compartilhamento do trabalho com reconhecimento da autoria do trabalho e publicação inicial nesta revista.
- Autores têm autorização para assumir contratos adicionais separadamente, para distribuição não-exclusiva da versão do trabalho publicada nesta revista (ex.: publicar em repositório institucional ou como capítulo de livro), com reconhecimento de autoria e publicação inicial nesta revista.
- Autores têm permissão e são estimulados a publicar e distribuir seu trabalho online (ex.: em repositórios institucionais ou na sua página pessoal) após o processo editorial, já que isso pode aumentar o impacto e a citação do trabalho publicado (Veja O Efeito do Acesso Livre).
- Autores são responsáveis pelo conteúdo constante no manuscrito publicado na revista.