• Proceedings of the Korea Water Resources Association Conference
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• 2011.05a
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• pp.279-282
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• 2011

최근 기후변화에 의한 기상현상은 국지성 집중호우, 돌발홍수 등을 발생시켜 많은 인명과 재산의 피해를 가져오고 있다. 특히, 도시집중 현상으로 택지 및 시설부지의 부족현상이 가중됨으로써 하천범람 구역이나 홍수우려가 있는 저지대까지 도시화가 이루어짐으로써 치수상 안전도가 상대적으로 저하되고 있는 한편, 도시유역에서의 집중호우로 인한 홍수피해는 다른 지역에 비해 상대적으로 피해규모가 증대되고 있다. 또한, 최근 도시지역에 홍수피해를 유발하고 있는 강우의 특징은 단시간에 많은 강우가 집중하여 발생하는 국지성 집중 호우로 침수피해를 가중시키는 경향이 있으므로 배수시설 설계 시 이러한 강우의 특성과 도시유출 특성에 대한 고려가 필요하다. 이에 본 연구에서는 최근 침수가 잦은 부산 센텀지구를 대상으로 모형을 구축하여 기존배수체계의 배수능력을 초과하는 집중호우 발생 시 침수피해를 저감하기 위한 지하저류조의 용량을 산정하였다.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.979-979
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• 2012

최근 기후변화로 인한 사회경제적 충격에 대해 관심이 증가하고 있다. 비록 기후변화로 인해 특정한 충역에 대한 결정적인 증가가 부족함에 불구하고 많은 연구에서 가뭄과 같은 극단적인 기후사상의 빈도와 강도가 증가할 것으로 예상하고 있다(IPCC 2007). 기후변화뿐만 아니라 인구증가, 도시화, 환경보호와 같은 요구로 인해 희소한 자원인 수자원의 물부족 스트레스는 더욱 악화되고 있다. 그러나, 기후변화로 인한 가뭄의 특성은 시작시기의 불명확성과 갑작스러운 강우발생에 따른 해갈로 인해 가뭄피해를 산정하기가 매우 어렵다는 단점이 있다. 이러한 요인은 향후 발생할 수 있는 극한가뭄에 대한 예방사업의 필요성을 약화시키기 때문에 가뭄예방정책은 합리적으로 수립되기 어려운 실정이다. 이에 본 연구에서는 우리나라에서 발생한 가뭄의 피해사례를 조사함으로써 향후 우리나라에서의 가뭄피해를 예상해 보았으며, 이에 따른 가뭄피해예방정책의 필요성을 제시하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.547-548
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• 2023

내진 설계가 되어있지 않은 건물의 경우, 지진으로 인해 건물 붕괴 가능성이 높아지며 이로 인해 많은 인명 피해가 발생할 수 있다. 지진으로 인한 건물의 피해를 예측하고 이를 기반으로 취약점을 보완한다면 인명 피해를 줄일 수 있으므로 건물 피해 예측 모델에 대한 연구가 필요하다. 본 논문에서는 2015 년 네팔 대지진으로 인해 손상된 건물 데이터를 활용하여 Random Forest 와 Extreme Gradient Boosting 기계학습 분류 알고리즘을 사용하여 지진 피해 예측 모델의 정확도를 비교하였다.

• Magazine of the Korea Concrete Institute
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• v.9 no.1
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• pp.29-35
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• 1997

• Proceedings of KHEA Conference
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• 2003.04a
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• pp.190-190
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• 2003

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.15 no.2
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• pp.237-244
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• 1997

The goal of this research is to evaluate methodology that uses satellite data for the analysis of flood and drought damaged area. Land cover classification were performed using satellite data that were acquired at disaster periods and comparatively normal times. Damaged area was extracted by use of overlay analysis in land cover change and compared with the field survey results. The results show analysis of flood damaged area could be carried out with single scene acquired at adequate day, and are corresponded with field survey data very well. And also, some areas that had been missed in field survey were found. The suggested method proved to be more accurate and effective way for mapping inundated areas of floodplains than field survey that would be held a few month later. The results on the analysis of drought damaged area show that drained water could be detected just only in small area, and crop damaged area could not be verified in objective validity. Drought analysis by remote sensing was proved not to be adequate for practical use in this study.

• Journal of the Korean earth science society
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• v.34 no.6
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• pp.536-549
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• 2013

This study investigates the damages of and analyzes the social and economic impacts of volcanic ash eruptions in the world in order to estimate the potential volcanic ash impacts in South Korea when Mt. Baekdusan volcano erupts in the future. First, we build a comparison chart called "the impact of volcanic ash" on each economic and social sector by using major volcanic eruptions and we compare the damage with respect to volcanic ash thickness/weights. Secondly, we analyze the social and economic impact from volcanic ash. The economic damage is not likely to occur in South Korea, unless Mt. Baekdusan erupts in winter. However, the potential damage should not be overlooked because the volcanic ash may have a global impact around the world. If Mt. Baekdusan volcano erupts when the wind blows from north or northeast, the volcanic ash may then significantly affect South Korea of which economy is highly dependent on exports. Particularly when the volcanic ash moves to the densely populated metropolitan areas or agricultural areas, the damage can be significant. In preparation for the potential volcanic disasters, the volcanic ash forecast table suitable for South Korea should be prepared. In addition, building a Korean volcanic ash hazard map in advance will have a strategic significance.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.685-693
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• 2017

This study aims to effectively respond to urban local rainstorms by classifying the risk against flood damage for each use district. The risk classification is based on sensitivity analysis of the socio-economic damage caused by local rainstorms in Changwon city, Korea by a Fuzzy model using data, such as the districts that provide institutional bases for land use, land prices, which estimate the property values, and floor area ratios, which measures the density and areas of flood damage. The analysis result indicated that flood damage in five districts of Changwon (Masan happo-gu, Masan Hoewon-gu, Sungsan-gu, Euichang-gu, and Jinhae-gu) is highest in the order of commercial areas, residential areas, industrial areas, and forests, which was attributed to high land price and floor area ratio of commercial areas. On the other hand, specific analysis in Masan Hoewon-gu and Sungsan-gu was different from the previous result, indicating that the risk against flood damage may vary according to the districts depending on their local conditions. The analysis from this study can be applied to future urban planning and be used as a guideline to estimate the potential flood damage. Overall, this study is meaningful in that it proposes an effective management of land use as a new resolution to mitigate of urban flood damage within a broader perspective of climate change and urbanization.

• Korean Journal of Agricultural and Forest Meteorology
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• v.19 no.2
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• pp.43-53
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• 2017

This study aims to analyze the effect of typhoons on pear production. Pears are typical fruits that are vulnerable to typhoon damages, so typhoons are negatively associated with pear productivity. However, relatively less pear damages by typhoons in the main pear production area, comparing to the average in Korea, have been reported. The main production area seems to adopt better agricultural techniques or practices to cope with natural disasters such as typhoons. Thus, this study tests the hypothesis that there are differences of production losses due to typhoons between the main pear production area and the rest using the stochastic frontier analysis. The main production area is defined by Location Quotient Index (LQI), and we found that LQI had a significant effect to decrease the productivity losses in the main production areas, which shows that those production areas alleviated the pear production loss due to typhoons.

• Journal of the Korean Society of Hazard Mitigation
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• v.9 no.2
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• pp.31-37
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• 2009

Most damages of civil infrastructures under natural disasters are frequently occurred at surrounding areas of the river or the road. Every year, Recovery for these disaster damages are performed by the government. Recently, the government decide to change current recovery plan system because current recovery plan which doesn't consider future disaster impacts at a site has been proved to be ineffective. Accordingly, new permanency recovery plan system is needed and its corresponding ideas are presented in this research considering more detailed disaster damage classifications and cause assessments. The proposed permanency recovery plan would also provide more systematic and diverse recovery response strategies including both two concepts, for example Preparedness considered by risk assessment and management, and Mitigation investigated by hazard impact analyses.