Analysis of Flood Damage in the Seoul Metropolitan Government Using Climate Change Scenarios and Mitigation Technologies

Kim, Jaekyoung; Kang, Junsuk

doi:10.3390/su13010105

Cited by 15 publications

(6 citation statements)

References 20 publications

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“…Erratic rainfall patterns and increased intensity contribute to sub-stantial damage in areas with population and infrastructure [31]. 2011 Seoul experienced substantial damage due to heavy rainfall measuring 110.5 mm per hour [32]. The intensity reached a higher level in 2022, recording 141.5 mm of rain per hour, resulting in an extensive and overwhelming flood [4].…”

Section: Ecologymentioning

confidence: 99%

Study on the Redevelopment of the Hangang River Waterfront from an Urban Resilience Perspective

Jun,

Song

2023

Sustainability

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Cities worldwide are developing strategies to cope with heat waves, extreme colds, floods, wildfires, hurricanes, earthquakes, droughts, pandemics, and other disasters caused by climate change. To this end, a resilience theory is being expanded and applied as a methodology to secure social and spatial systems that respond to climate change while providing ecological habitats and spaces for more diverse human activities. This study evaluated resilient redevelopment strategies for the Hangang River in Seoul by drawing on practices grounded in resilience theory. This study analyzed the nine proposals from the Resilience by Design Challenge, which aimed to gather response strategies for climate change in the San Francisco Bay Area in 2017 to identify practical physical design and social system strategies. Each team’s strategy for implementing urban resilience focused on six categories: governance systems, financial planning, public engagement, accessibility, ecology, and diversity. The guidelines to consider during the redevelopment of the Hangang River in Seoul were formulated by applying these criteria to the review of the river. This process has also yielded the following implications and characteristics for resilient design. First, ensuring the resilience of a city necessitates prioritizing the resolution of regional imbalances. Second, the social and ecological resilience of cities is intricately intertwined. Moreover, comprehending the dynamics between the two can guide effective, resilient design. Third, resilient design’s spatial and temporal scales are extensive and varied, highlighting the importance of understanding the relationships among categories and subcategories at different hierarchies. Finally, the value of urban waterfront space, traditionally associated with positive cultural and economic contributions to cities, must be reevaluated more profoundly and meaningfully in light of climate change.

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Section: Ecologymentioning

confidence: 99%

Study on the Redevelopment of the Hangang River Waterfront from an Urban Resilience Perspective

Jun,

Song

2023

Sustainability

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“…Although the elevation around the Hangang River area is relatively high, the random rainfall patterns and increased intensity cause significant damage around the river where the population and infrastructure are concentrated [24,25]. Heavy rainfall of 110.5 mm/h caused great damage to Seoul in 2011 [26]. Furthermore, the intensity increased in 2022 when 141.5 mm/h of rainfall caused an irresistible flood over a vast area [27].…”

Section: Climate Change Regarding the Hangang Rivermentioning

confidence: 99%

Towards Sustainable Urban Riverfront Redevelopment: Adaptability as a Design Strategy for the Hangang Riverfront in Seoul

Jun

2023

Sustainability

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The design of urban spaces, including waterfronts, must consider the flexibility to respond to urban and environmental changes and the continuity that respects the existing urban factors that have determined the essential characteristics of the place. The Hangang River in Seoul, South Korea, has been susceptible to significant changes over the years and has accumulated considerable historical traces and an irrevocable relationship with its urban contexts. On the other hand, as the country experienced rapid development, most urban plans have been executed based on shortsighted perspectives without considering sustainability. This study suggests adaptability as the main driver to achieve sustainability of the urban riverfront by viewing the site condition dichotomously. The components of the site were distinguished as fixed and variable factors. Considering fixed factors, six design intervention types were applied to the site through extensive macroanalysis and correlation studies, and each intervention was proposed to respond to the variable factors of the site. This study proposed four strategies to upgrade the riverfront as an adaptable space. First, five types of waterfronts were introduced with more distinct functions and identities to accommodate various activities. Second, commercial development was introduced to build a stable financial base that could respond to economic fluctuations. Third, the ecological waterfront space was expanded to react to climate change in the long term and achieve the goals of improving the microclimate, biodiversity, and educational function in the short term. Lastly, connective infrastructure was introduced to address the rapidly increasing demand for open space. The significance of this study was twofold. First, the site condition was interpreted more comprehensively by applying a framework for analysis by distinguishing the fixed and variable factors. Second, the strategy presented in this study can be applied to establish a waterfront redevelopment plan in other cities that have a context similar to the Hangang River of Seoul.

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“…Floods have been occurring throughout Earth's history, and are expected to persist so long as the water cycle and soil moisture dynamics continue. Understanding the geological characteristics of an area is crucial for assessing flood risk, developing flood management strategies, and designing infrastructure to mitigate flood impacts (Tehrany et al 2014;Kayode et al 2019;Wu, 2020;El-Zein et al 2021;Osei et al 2021, Kim andKang, 2021).…”

Section: Introductionmentioning

confidence: 99%

Electrical geophysical evaluation of susceptibility to flooding in University of Nigeria, Nsukka main campus and its environs, Southeastern Nigeria

Obiora,

Ibuot

2023

Journal of Groundwater Science and Engineering

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Flooding occurs when rainfall exceeds the absorption capacity of soil and causes significant environmental consequences. In this study, electrical resistivity techniques were employed to assess the flood susceptibility of the study area by examining variations in electrical properties. Prior to flooding, Vertical Electrical Sounding (VES) and Electrical Resistivity Tomography (ERT) profiles were conducted to determine the variations in resistivity within subsurface lithologies exposed to the injected current. The injected current penetrated the subsurface units characterised by resistivity ranging from 190.5 Ω•m to 6,775.7 Ω•m, 42.3 Ω•m to 7,297.4 Ω•m, and 320.2 Ω•m to 24,433.3 Ω•m in the first, second and third layers, respectively. These layers were identified as lateritic topsoil, medium-coarse brownish grained sand, and coarse pebbly blackish sand, respectively. The calculated reflection coefficients between layers 1, 2, and 3 reveal alternation in layers with values ranging from −0.04 to 0.66 and 0.36 to 0.95 for and , respectively. The transverse resistivity, longitudinal resistivity and anisotropy ranged from 243.59 Ω•m to 24,115.42 Ω•m, 199.61 Ω•m to 14,950.76 Ω•m, and 1.02 to 2.14. Models derived from the ERT profiles reveal variations in resistivity, pinpointing areas of low resistivity which correspond to waterlogged and impermeable layers. The result of this study underscores the importance of integrated resistivity techniques in the study of floods, as it provides valuable insights into flood behaviour, and subsurface dynamics.

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Analysis of Flood Damage in the Seoul Metropolitan Government Using Climate Change Scenarios and Mitigation Technologies

Cited by 15 publications

References 20 publications

Study on the Redevelopment of the Hangang River Waterfront from an Urban Resilience Perspective

Study on the Redevelopment of the Hangang River Waterfront from an Urban Resilience Perspective

Towards Sustainable Urban Riverfront Redevelopment: Adaptability as a Design Strategy for the Hangang Riverfront in Seoul

Electrical geophysical evaluation of susceptibility to flooding in University of Nigeria, Nsukka main campus and its environs, Southeastern Nigeria

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