• Title/Summary/Keyword: 풍랑피해

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A Study on the Prediction Function of Wind Damage in Coastal Areas in Korea (국내 해안지역의 풍랑피해 예측함수에 관한 연구)

  • Sim, Sang-bo;Kim, Yoon-ku;Choo, Yeon-moon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.4
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    • pp.69-75
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    • 2019
  • The frequency of natural disasters and the scale of damage are increasing due to the abnormal weather phenomenon that occurs worldwide. Especially, damage caused by natural disasters in coastal areas around the world such as Earthquake in Japan, Hurricane Katrina in the United States, and Typhoon Maemi in Korea are huge. If we can predict the damage scale in response to disasters, we can respond quickly and reduce damage. In this study, we developed damage prediction functions for Wind waves caused by sea breezes and waves during various natural disasters. The disaster report (1991 ~ 2017) has collected the history of storm and typhoon damage in coastal areas in Korea, and the amount of damage has been converted as of 2017 to reflect inflation. In addition, data on marine weather factors were collected in the event of storm and typhoon damage. Regression analysis was performed through collected data, Finally, predictive function of the sea turbulent damage by the sea area in 74 regions of the country were developed. It is deemed that preliminary damage prediction can be possible through the wind damage prediction function developed and is expected to be utilized to improve laws and systems related to disaster statistics.

Development of Predicting Function for Wind Wave Damage based on Disaster Statistics: Focused on East Sea and Jeju Island (재해통계기반 풍랑피해액예측함수 개발 : 동해안, 제주를 중심으로)

  • Choo, Tai-Ho;Kwon, Jae-Wook;Yun, Gwan-Seon;Yang, Da-Un;Kwak, Kil-Sin
    • Journal of the Korean Society for Environmental Technology
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    • v.18 no.2
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    • pp.165-172
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    • 2017
  • In current stage, it is hard to predict the scale of damage caused by natural disaster and it is hard to deal with it. However, in case of disaster planning level, if it is possible to predict the scale of disaster then quick reaction can be done which will reduce the damage. In the present study, therefore, function of wind wave damage estimation among various disaster is developed. Damage of wind wave and typhoon in eastern and Jeju coastal zone was collected from disaster report (1991~2014) published by Ministry of Public Safety and Security and to reflect inflation rate, 2014 damage cost was converted. Also, wave height, wind speed, wave direction, wave period, etc was collected from Meteorological Administration and Korea Hydrographic and Oceanographic Administration web site. To reflect the characteristic of coastal zone when wave damage occurs, CODI(Coastal Disaster Index), COSI(Coastal Sensitivity Index), CPII(Coastal Potential Impact Index) published by Korea Hydrographic and Oceanographic Agency in 2015 were used. When damage occurs, function predicting wind wave damage was developed through weather condition, regional characteristic index and correlation of damage cost.

Development of the Wind Wave Damage Estimation Functions based on Annual Disaster Reports : Focused on the Western Coastal Zone (재해연보기반 풍랑피해예측함수 개발 : 서해연안지역)

  • Choo, Tai-Ho;Cho, Hyoun-Min;Shim, Sang-Bo;Park, Sang-Jin
    • The Journal of the Korea Contents Association
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    • v.18 no.1
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    • pp.154-163
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    • 2018
  • Not only South Korea but also Global world show that the frequency and damages of large-scale natural disaster due to the rise of heavy rain event and typhoon or hurricane intensity are increasing. Natural disasters such as typhoon, flood, heavy rain, strong wind, wind wave, tidal wave, tide, heavy snow, drought, earthquake, yellow dust and so on, are difficult to estimate the scale of damage and spot. Also, there are many difficulties to take action because natural disasters don't appear precursor phenomena However, if scale of damage can be estimated, damages would be mitigated through the initial damage action. In the present study, therefore, wind wave damage estimation functions for the western coastal zone are developed based on annual disaster reports which were published by the Ministry of Public Safety and Security. The wind wave damage estimation functions were distinguished by regional groups and facilities and NRMSE (Normalized Root Mean Square Error) was analyzed from 1.94% to 26.07%. The damage could be mitigated if scale of damage can be estimated through developed functions and the proper response is taken.

Development of the Wind Wave Damage Predicting Functions in southern sea based on Annual Disaster Reports (재해연보기반 남해연안지역 풍랑피해 예측함수 개발)

  • Choo, Tai Ho;Kim, Yeong Sik;Sim, Sang Bo;Son, Jong Keun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.2
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    • pp.668-675
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    • 2018
  • The continuing urbanization and industrialization around the world has required a large amount of power. Therefore, construction of major infrastructure, including nuclear power plants in coastal areas, has accelerated. In addition, the intensity of natural disasters is increasing due to global warming and abnormal climate phenomena. Natural disasters are difficult to predict in terms of occurrence, location, and scale, resulting in human casualties and property damage. For these reasons, the disaster scale and damage estimation in coastal areas have become important issues. The present study examined the predictable weather data and regional ratings and developed estimating functions for wind wave damage based on the disaster statistics in the southern areas. The results of the present study are expected to help disaster management in advance of the wind wave damage. The NRMSE was used for verification. The accuracy of the NRMSE results ranged from 1.61% to 21.73%.

Proposal for Wind Wave Damage Cost Estimation at the Southern Coastal Zone based on Disaster Statistics (재해통계기반 남해연안지역 풍랑피해액예측함수 제안)

  • Choo, Tai-Ho;Yun, Gwan-Seon;Kwon, Yong-Been;Park, Sang-Jin;Kim, Seong-Ryul
    • The Journal of the Korea Contents Association
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    • v.17 no.4
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    • pp.267-274
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    • 2017
  • The natural disasters such as typhoon, earthquake, flood, heavy rain, drought, sweltering heat, wind wave, tsunami and so on, are difficult to estimate the scale of damage and spot. Also, these disasters were being damaged to human life. However, if based on the disaster statistics the past damage cases are analyzed and the estimated damages can be calculated, the initial damage action can be taken immediately and based on the estimated damage scale the damage can be mitigated. In the present study, therefore, we proposed the functions of wind wave damage estimation for the southern coast. The functions are developed based on Disaster Report('91~'14) for wind wave and typhoon disaster statistics, regional characteristics and observed sea weather.

Development for the function of Wind wave Damage Estimation at the Western Coastal Zone based on Disaster Statistics (재해통계기반 서해 연안지역의 풍랑피해예측함수 개발)

  • Choo, Tai Ho;Kwak, Kil Sin;Ahn, Si Hyung;Yang, Da Un;Son, Jong Keun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.18 no.2
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    • pp.14-22
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    • 2017
  • The frequency and scale of natural disasters due to the abnormal climate phenomena caused by global warming have being increasing all over the world. Various natural disasters, such as typhoons, earthquakes, floods, heavy rain, drought, sweltering heat, wind waves, tsunamis and so on, can cause damage to human life. Especially, the damage caused by natural disasters such as the Earthquake of Japan, hurricane Katrina in the United States, typhoon Maemi and so on, have been enormous. At this stage, it is difficult to estimate the scale of damage due to (future) natural disasters and cope with them. However, if we could predict the scale of damage at the disaster response level, the damage could be reduced by responding to them promptly. In the present study, therefore, among the many types of natural disaster, we developed a function to estimate the damage due to wind waves caused by sea winds and waves. We collected the damage records from the Disaster Report ('91~'14) published by the Ministry of Public Safety and Security about wind waves and typhoons in the western coastal zone and, in order to reflect the inflation rate, we converted the amount of damage each year into the equivalent amount in 2014. Finally, the meteorological data, such as the wave height, wind speed, tide level, wave direction, wave period and so on, were collected from the KMA (Korea Meteorological Administration) and KHOA (Korea Hydrographic and Oceanographic Agency)'s web sites, for the periods when wind wave and typhoon damage occurred. After that, the function used to estimate the wind wave damage was developed by reflecting the regional characteristics for the 9 areas of the western coastal zone.

A Study of Resource Mobilization Cases and Problems in the Case of Inundation (침수 발생 시 자원동원 사례 및 문제점 고찰)

  • Yon Soo Kim;Ha Young Jang;Min Young Jung;Ho Young Jeon
    • Proceedings of the Korea Water Resources Association Conference
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    • 2023.05a
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    • pp.406-406
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    • 2023
  • 자연재난은 각각의 유형별로 발생 특성이 다양하고, 피해 유형도 상이하기에 재난 발생 시 재난 특성에 따른 최적 자원의 비축 및 동원이 필요하다. 하지만, 재난관리자원은 종류가 다양하고 요구 비축량이 많으며, 재난유형별로 발생특성이 다양하고 피해유형도 상이하기 때문에 모든 자원을 비축하고 활용하기에는 어려움이 따른다. 따라서 재난특성에 맞는 필요 자원의 비축을 통한 효율적인 재난관리자원 운영 및 관리체계 마련이 필요하다. 특히, 침수관련 재난(호우, 태풍, 풍랑)의 경우 과거 20년(2001년~2020년)동안 발생 건수는 282건으로 같은 기간 발생한 413건의 자연재난 중 68%를 차지할 만큼 침수 대응에 따른 필요 자원의 분석이 필요하지만, 관련 자원의 운영현황 및 발생한 문제점에 대한 분석은 미흡한 실정이다. 이에 본 연구에서는 과거 20년(2001년~2020년)동안 발생한 침수관련 재난(호우, 태풍, 풍랑)발생 시 동원된 재난관리자원 사례를 분석하였다. 재해연보, 관련 백서 및 보고서 등의 수집 및 분석을 통해 침수 발생 시 동원된 장비, 자재를 분석하였으며, 자원동원 시 발생하는 문제점을 자원비축, 자원능력, 자원활용, 대응시간으로 구분할 수 있었다. 본 연구는 과거 발생한 침수관련 재난에 대하여 재난관리자원의 동원 사례와 시사점 및 문제점을 도출한 점에서 그 의미가 있으며, 향후 침수 관련 재난 발생 시 자원의 효율적인 비축 및 관리, 동원 및 응원 등 효율적 운영방안 수립에 활용할 수 있을 것으로 기대된다.

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Analysis of Resource Mobilization in Inundation Area through Past Disaster Events (과거 재난사례를 통한 침수지역 자원동원 현황 분석)

  • Ha Young Jang;Yon Soo Kim;Dae Won Jang;Duck Gil Kim
    • Proceedings of the Korea Water Resources Association Conference
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    • 2023.05a
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    • pp.404-404
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    • 2023
  • 최근 국지성 집중호우 등 기상이변의 영향으로 침수피해의 위험성은 점차 증가하는 추세이고, 도시화로 인한 불투수면적의 증가, 녹지공간의 감소, 도시의 난개발 등 물순환 체계의 왜곡에 따른 침수로 인한 피해가 다수 발생하고 있다. 침수 발생 시 막대한 인적 및 물적 피해가 발생할 수 있기에 재난초기에 재난관리자원의 신속한 확보와 동원은 피해확산 방지에 매우 중요하고, 자원의 부족이나 동원의 지연으로 초기 대응이 늦어질 경우 피해가 확대될 수 있기에 침수발생 특성에 따른 필요 자원의 비축 및 동원이 필요하다. 하지만, 재난관리자원은 종류가 다양하고 요구되는 비축량이 많기에 모든 재난관리자원을 보유하고, 활용하기에는 어려움이 따른다. 따라서 침수피해재난을 중심으로 최적 자원 비축을 통한 효율적인 재난관리자원 운영 및 관리체계의 마련이 필요하다. 본 연구에서는 과거 20년(2001년~2020년) 동안 발생한 침수피해 관련 재난(호우, 태풍, 풍랑)사례를 통해 재난발생 시 동원된 자원현황을 분석하였다. 재해연보, 관련 백서 및 보고서, 침수흔적도 등의 수집 및 분석을 통해 지자체 침수피해 현황을 분류하고, 침수재난과 관련된 자원의 비축 및 운용 사례 분석을 통해 장비 28종, 자재 6종을 확인하였다. 본 연구는 침수재난 발생 시 지자체별 침수피해 규모와 필요한 재난관리자원을 도출한 점에서 그 의미가 있으며, 향후 재난관리자원의 효율적인 비축 및 관리계획 수립에 기초자료로 활용할 수 있을 것으로 기대된다.

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Development of a DEbris flow Loss Estimation Tool using Inventory and GIS (토석류 충격력과 인벤토리를 고려한 GIS 기반 토사재해 피해액 산정 모형 개발)

  • Kim, Byung Sik;Nam, Dong Ho
    • Proceedings of the Korea Water Resources Association Conference
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    • 2020.06a
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    • pp.105-105
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    • 2020
  • 전 세계적으로 기후변화에 따른 기온상승 및 강수량 증가, 호우일수 증가 등 이상기후로 인해 다양한 형태의 자연재해가 발생하고 있으며, 이로 인해 우리나라에서도 폭우, 풍랑, 가뭄, 대설 등으로 인한 자연재해 발생이 증가하고 있다. 특히 우리나라는 연평균 강수량 1,300mm의 대부분의 강우가 하절기인 6 ~ 9월에 태풍 및 집중호우를 동반하여 발생하기 때문에 연강수량의 60%이상이 여름철에 집중된다. 이러한 여름철에 집중된 강우로 인해 홍수 및 범람 피해가 여름철에 급증하고 있으며, 2차 피해인 산사태 및 토석류 피해 또한 급증하고 있는 추세이다. 토석류는 집중호우 시 자연산지의 취약한 사면이 붕괴되어 유출수와 함께 급경사의 계류로 붕괴된 토석이 유출되면서 토석류로 전이 및 발전하여 계류하부의 주택 및 농경지를 매몰하여 피해를 발생시킨다. 특히 토석류는 유출수와 함께 토석이 급경사의 계류를 따라 빠른 속도로 이동하고 퇴적 시작점에서 높이의 6배까지 이동하여 인명피해 등 큰 피해를 발생시키는 특성이 있다. 이러한 토석류 피해로 인한 피해와 손실을 최소화하기 위해서는 토석류 발생 시 피해 규모를 예측하여야하며, 또한 하부 구조물의 손실을 정량적으로 해석하여 방재정책의 우선순위를 수립하여야 한다. 따라서 본 논문에서는 강우로 인한 토석류 발생시 하부 구조물의 손실을 정량적으로 해석하기 위하여 토사재해 손실·손상함수를 개발하여, 함수를 탑재한 토사재해 피해액 산정모형인 DELET(DEbris flow Loss Estimation Tool) 모형을 개발하였다. DELET를 이용하여 실제 토석류 피해가 발생한 피해지역에 적용하여 토사재해 피해 구조물의 손실을 평가하였다.

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