{"title":"Assessing Typhoon Soulik-induced morphodynamics over the Mokpo coastal region in South Korea based on a geospatial approach","authors":"Sang-Guk Yum, Moon-Soo Song, M. Adhikari","doi":"10.5194/nhess-23-2449-2023","DOIUrl":null,"url":null,"abstract":"Abstract. The inner shelf and coastal region of the Yellow Sea along the Korean\nPeninsula are frequently impacted by typhoons. The Mokpo coastal region in\nSouth Korea was significantly affected by Typhoon Soulik in 2018, the\ndeadliest typhoon strike to the southwestern coast since Typhoon Maemi in 2003.\nTyphoon Soulik overran the region, causing extensive damage to the coast,\nshoreline, vegetation, and coastal geomorphology. Therefore, it is important to investigate its impact on the coastal ecology, landform,\nerosion/accretion, suspended-sediment concentration (SSC), and associated\ncoastal changes along the Mokpo region. In this study, the net shoreline movement (NSM), normalized difference\nvegetation index (NDVI), fractional vegetation coverage (FVC), coastal-landform change model, normalized difference suspended-sediment index\n(NDSSI), and SSC–reflectance relation have been used to analyze the coastal\nmorphodynamics over the typhoon periods. We used pre- and post-typhoon\nSentinel-2 MultiSpectral Instrument (MSI) images for mapping and monitoring the typhoon effect and\nrecovery status of the Mokpo coast through short- and medium-term coastal-change analysis. The findings highlighted the significant impacts of\ntyphoons on coastal dynamics, wetland vegetation, and sediment resuspension\nalong the Mokpo coast. It has been observed that typhoon-induced SSC\ninfluences shoreline and coastal morphology. The outcome of this research\nmay provide databases to manage coastal environments and a long-term plan to restore valuable coastal habitats. In addition, the findings may be useful for post-typhoon emergency response, coastal planners, and administrators involved in the long-term development of human life.","PeriodicalId":18922,"journal":{"name":"Natural Hazards and Earth System Sciences","volume":" ","pages":""},"PeriodicalIF":4.2000,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Natural Hazards and Earth System Sciences","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.5194/nhess-23-2449-2023","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOSCIENCES, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
Abstract
Abstract. The inner shelf and coastal region of the Yellow Sea along the Korean
Peninsula are frequently impacted by typhoons. The Mokpo coastal region in
South Korea was significantly affected by Typhoon Soulik in 2018, the
deadliest typhoon strike to the southwestern coast since Typhoon Maemi in 2003.
Typhoon Soulik overran the region, causing extensive damage to the coast,
shoreline, vegetation, and coastal geomorphology. Therefore, it is important to investigate its impact on the coastal ecology, landform,
erosion/accretion, suspended-sediment concentration (SSC), and associated
coastal changes along the Mokpo region. In this study, the net shoreline movement (NSM), normalized difference
vegetation index (NDVI), fractional vegetation coverage (FVC), coastal-landform change model, normalized difference suspended-sediment index
(NDSSI), and SSC–reflectance relation have been used to analyze the coastal
morphodynamics over the typhoon periods. We used pre- and post-typhoon
Sentinel-2 MultiSpectral Instrument (MSI) images for mapping and monitoring the typhoon effect and
recovery status of the Mokpo coast through short- and medium-term coastal-change analysis. The findings highlighted the significant impacts of
typhoons on coastal dynamics, wetland vegetation, and sediment resuspension
along the Mokpo coast. It has been observed that typhoon-induced SSC
influences shoreline and coastal morphology. The outcome of this research
may provide databases to manage coastal environments and a long-term plan to restore valuable coastal habitats. In addition, the findings may be useful for post-typhoon emergency response, coastal planners, and administrators involved in the long-term development of human life.
期刊介绍:
Natural Hazards and Earth System Sciences (NHESS) is an interdisciplinary and international journal dedicated to the public discussion and open-access publication of high-quality studies and original research on natural hazards and their consequences. Embracing a holistic Earth system science approach, NHESS serves a wide and diverse community of research scientists, practitioners, and decision makers concerned with detection of natural hazards, monitoring and modelling, vulnerability and risk assessment, and the design and implementation of mitigation and adaptation strategies, including economical, societal, and educational aspects.