• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2002년도 학술발표회 논문집(II)
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• pp.799-804
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• 2002

• 한국농공학회:학술대회논문집
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• 한국농공학회 2002년도 학술발표회 발표논문집
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• pp.305-308
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• 2002

This study is that analyzes the flood damages caused by rainfall during typhoon and how inundated area should be affected. Using HEC-HMS for analyzing rainfall-runoff and GIS (Geography Information System) for analyzing inundated area and volume. Each model was applied to Seopyung area for runoff effect analysis. As the result, Damaged area was magnified gradually according to the increase of rainfall and GIS was good for calculating the exact flood damage area at varied time.

• Korean Journal of Geomatics
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• 제2권1호
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• pp.37-46
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• 2002

Accurate classification of water area is an preliminary step to accurately analyze the flooded area and damages caused by flood. This step is especially useful for monitoring the region where annually repeating flood is a problem. The accurate estimation of flooded area can ultimately be utilized as a primary source of information for the policy decision. Although SAR (Synthetic Aperture Radar) imagery with its own energy source is sensitive to the water area, its shadow effect similar to the reflectance signature of the water area should be carefully checked before accurate classification. Especially when we want to identify small flood area with mountainous environment, the step for removing shadow effect turns out to be essential in order to accurately classify the water area from the SAR imagery. In this paper, the flood area was classified and monitored using multi-temporal RADARSAT SAR images of Ok-Chun and Bo-Eun located in Chung-Book Province taken in 12th (during the flood) and 19th (after the flood) of August, 1998. We applied several steps of geometric and radiometric calculations to the SAR imagery. First we reduced the speckle noise of two SAR images and then calculated the radar backscattering coefficient $(\sigma^0)$. After that we performed the ortho-rectification via satellite orbit modeling developed in this study using the ephemeris information of the satellite images and ground control points. We also corrected radiometric distortion caused by the terrain relief. Finally, the water area was identified from two images and the flood area is calculated accordingly. The identified flood area is analyzed by overlapping with the existing land use map.

• 한국측량학회지
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• 제24권3호
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• pp.299-309
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• 2006

최근 세계적인 기상이변으로 대규모의 자연재해가 발생되고 있으며, 도시지역의 인구 과밀화와 시설물의 대형화로 피해규모도 대형화되고 있다. 본 연구에서는 매미 태풍 시 침수피해가 크게 발생하였던 마산시 월영동지역에 대해 도시홍수량을 추정할 수 있는 SWMM모형을 이용하여 빈도강우와 해수위별 침수예상지를 추정하고 이것을 GIS데이터베이스와 연결하여 침수예상피해를 분석하였다. 그 결과, GIS자료를 이용하여 대상지역을 소유역으로 구분하고 홍수추정모형인 SWMM을 이용하여 침수위치와 침수심을 예측함으로서 빈도강우와 해수위 상승에 따른 침수예상지역을 정확하게 예측할 수 있었다. 또한 침수가 예상되는 지역에 대해 건물용도별로 침수위험도를 예측하거나 침수에 따른 대피계획수립에 이용할 수 있는 자료를 제공할 수 있었으며, 향 후 웹이나 무선통신기술 등과 연계된 재난관리체계구축에 대한 연구가 이뤄질 경우 활용성이 증대될 것으로 판단된다.

• 한국산업보건학회지
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• 제27권4호
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• pp.324-332
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• 2017

Objectives: Much scientific evidence indicate a positive association between moldy environments and respiratory illnesses and/or symptoms. However, few comprehensive assessments of mold have been performed for such settings. Spore counts or microscopic enumeration only may not be sufficient for evaluating fungal exposure. Recently, Mold Specific QPCR technology developed by the US EPA (Environmental Relative Moldiness Index, ERMI) has been widely used worldwide and great performance for assessing fungal exposure has been shown. Methods: We aimed to develop a Korean version of ERMI suitable for the distribution of fungal flora in Korea. Thirty dwellings in the Seoul and Incheon area were selected for sampling, and each was classified as 'Flooded, 'Water-damaged' or 'Non-water-damaged'. Results: Dust on the floor and airborne sampling were collected using an MAS100 and a 'Dustream' collector. Samples were analyzed by quantitative polymerase chain reaction(QPCR) for the 36 molds belonging to ERMI. Student t-test and ANOVA tests were carried out using SAS software. The median ERMI values of flooded, water damaged, and non-water damaged dwellings were 8.24(range: -5.6 to 27.9), 5.47(-25. 4 to 32.7), and -15.30(-24.6 to 14.8), respectively. Significant differences were observed between flooded and non-water damaged dwellings (P=0.001) and between water-damaged and non-water damaged dwellings (P=0.032). Conclusion: Our findings indicate that ERMI values attributed to dust samples in Korea could be applicable for the identification of flooded or water damaged buildings. However, much data is needed for continuously developing the Korean version of ERMI values.

• 대한원격탐사학회지
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• 제36권4호
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• pp.627-635
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• 2020

With the increasing severity of climate change, intense torrential rains are occurring more frequently globally. Flooding due to torrential rain not only causes substantial damage directly, but also via secondary events such as landslides. Therefore, accurate and prompt flood detection is required. Because it is difficult to directly access flooded areas, previous studies have largely used satellite images. Traditionally, water indices such asthe normalized difference water index (NDWI) and modified normalized difference water index (MNDWI) which are based on different optical bands acquired by satellites, are used to detect floods. In addition, as flooding likelihood is greatly influenced by the weather, synthetic aperture radar (SAR) images have also been used, because these are less influenced by weather conditions. In this study, we compared flood areas calculated from SAR images and water indices derived from Landsat-8 images, where the images were acquired at similar times. The flooded area was calculated from Landsat-8 and Sentinel-1 images taken between the end of May and August 2019 at Lijiazhou Island, China, which is located in the Changjiang (Yangtze) River basin and experiences annual floods. As a result, the flooded area calculated using the MNDWI was approximately 21% larger on average than that calculated using the NDWI. In a comparison of flood areas calculated using water indices and SAR intensity images, the flood areas calculated using SAR images tended to be smaller, regardless of the order in which the images were acquired. Because the images were acquired by the two satellites on different dates, we could not directly compare the accuracy of the water-index and SAR data. Nevertheless, this study demonstrates that floods can be detected using both optical and SAR satellite data.

• 한국작물학회:학술대회논문집
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• 한국작물학회 1995년도 추계 학술대회지
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• pp.62-63
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• 1995

• 한국작물학회:학술대회논문집
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• 한국작물학회 1995년도 추계 학술대회지
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• pp.60-61
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• 1995

• 한국주거학회논문집
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• 제1권1호
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• pp.65-76
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• 1990

Sugok Villiage. of the prospective flooded villiages for building Im Ha Dam, is selected as the studied place. Primarily, the purpose of this study is invested, recerded about traditional living environment, and then searched to find out possibilites on the context of the inheritance of analyzing about life contents and space. The result of this study are as follows:1) In composition of living environment, thinking view on confucianism and living view on folk beliefs are considered as important element2) Hierarchy of life environment is appeared of above and below space.(focused on JONG KA) and inner and outer space(boarded on pine forest) on the other hand according to living territory life environment can be divided into five territories.3) Confucian ideas, social status, folk beliefs and economics has been affected about formation of individual life. Accordingly, I believe that true inheritance of traditional culture was, through preserving mental contents as well as physical contents, possible.

• 한국수자원학회논문집
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• 제37권3호
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• pp.241-248
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• 2004

수해발생에 따른 피해를 줄이기 위해서는 구조적인 대책뿐만 아니라 비구조적인 대책수립을 포함한 종합적인 수해 대응대책이 중요하다. 본 연구에서는 비구조적인 대응대책 중 인명보호의 차원에서 중요한 피난활동을 중심으로 실제 피난행동을 하기까지의 영향요인을 설문조사를 토대로 분석하였다. 또한 향후 효과적인 수해대응을 위하여 태풍 루사 및 매미에 따른 침수지역주민을 대상으로 설문조사를 통하여 피난 장소, 피난 거리 등을 분석하였다. 피난모의 실험을 통하여 피난에 소요된 시간을 평가하였으며 그 결과, 피난에 소요되는 시간은 피난거리, 피난자의 가족 수에 크게 영향을 받는 것으로 나타났다.