• 제목/요약/키워드: RUSA

검색결과 138건 처리시간 0.022초

태풍 RUSA 전.후의 토지피복변화 분석기법 연구 (Method Development of Land Cover Change Detection by Typhoon RUSA)

  • 이미선;박근애;정인균;김성준
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2003년도 학술발표논문집
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    • pp.75-78
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    • 2003
  • This study is to present a method of land cover change detection by the typhoon RUSA (August 1 - September 4, 2002) using Landsat 7 ETM+ images. For the Namdae-cheon watershed in Gangreung, two images of Sept. 29, 2000 and Nov. 22, 2002 were prepared. To identify the damaged areas, firstly, the NDVI (Normalized Difference Vegetation Index) of each image was computed, secondly, the NDVI values were reclassified as two categories that the negative index values including zero are the one and the positive index values are the other, thirdly the reclassified image before typhoon is subtracted from the reclassified image after typhoon to get DNDVI (Differential NDVI). From the DNDVI image, the flooded and damaged areas could be extracted.

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수자원의 경제적 가치를 고려한 유출량의 평가 (A Study on Runoff Discharge Considering Economic Value of Water Resource)

  • 강상혁
    • Spatial Information Research
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    • 제15권3호
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    • pp.291-299
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    • 2007
  • 강원도 지역은 매년 다양한 재해를 반복적으로 겪고 있으며 이러한 재해는 이 지역의 지속적인 발전에 장애요인이 되고 있다. 특히 2002년 태풍 루사에 의한 집중호우는 막대한 피해와 더불어 우리사회의 많은 교훈을 남겼다. 본 연구에서는 홍수 유출량을 경제적 관점에서 평가함으로써 수자원 관리의 중요성을 부각하고자 하였다. 그 결과 2002년 루사 당시 삼척시 오십천의 홍수유출에 따른 수자원의 경제적 손실은 약 5천 5백만원이 유실된 것으로 분석되었다.

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태풍 '루사(RUSA)'의 이동에 따른 기상 현상

  • 육명렬
    • 한국농림기상학회:학술대회논문집
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    • 한국농림기상학회 2002년도 추계 학술발표논문집
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    • pp.1-18
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    • 2002
  • 우리나라는 매년 3∼4개의 태풍의 영향을 받고 있다. 금년에는 현재까지 4개의 태풍(제5호 라마순, 제8호 나크리, 제9호 펑셴, 제15호 루사)의 영향을 받았다. 특히, 태풍 역사이래 최대의 재산 및 인명 피해를 유발한 제15호 태풍은 8월 23일 09시경 북태평양의 괌 동북동쪽 약 1,800km 부근 해상(16.5N, 161.0E)에서 열대저압부(Tropical Depression, TD)가 '약'한 '소형' 열대폭풍(Tropical Storm, TS)으로 조직화되면서 제15호 태풍 '루사(RUSA)'로 명명되었으며, 그 뜻은 '삼바사슴'을 의미하고 말레이시아에서 제출한 태풍 이름이다.(중략)

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수문학 측면의 태풍 루사(RUSA)

  • 김현준
    • 한국농림기상학회:학술대회논문집
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    • 한국농림기상학회 2002년도 추계 학술발표논문집
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    • pp.19-34
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    • 2002
  • 지난 8월 31일, 제15호 태풍 루사(RUSA)가 한반도를 관통하며 전국적으로 사상 초유의 피해를 입히고 지나갔다. 특히 강원도의 영동지역은 지형적인 영향으로 기상관측이래 일 최대강우량을 기록하기도 하였다. 하천이 범람하고 도심의 저지대가 침수되었으며 제방, 도로, 교량이 유실되는 등 그 피해가 다른 지역보다 극심하였다 중앙재해대책본부는 이번 태풍으로 모두 5조1천479억 원의 재산피해가 발생하고 인명피해는 실종자 33명을 포함 246명으로 최종 집계 발표하였다.(중략)

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태풍-중위도 종관 시스템 상호작용 연구: 루사(0215), 매미(0314) 사례분석 (A Case Study on Typhoon-Midlatitude Synoptic System Interaction: Typhoons Rusa(0215) and Maemi(0314))

  • 최기선;김백조;박종길
    • 한국환경과학회지
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    • 제16권9호
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    • pp.1051-1061
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    • 2007
  • The impact of midlatitude synoptic system (upper-level trough) on typhoon intensity change was investigated by analyzing the spatial and temporal characteristics of vertical wind shear (VWS), relative eddy momentum flux convergence (REFC), and potential vorticity (PV). These variables were computed over the radial mean $300{\sim}1,000km$ from the typhoon center by using GDAPS (Global Data Assimilation and Prediction System) data provided by the Korea Meteorological Administration (KMA). The selected cases in this study are typhoons Rusa (0215) and Maemi (0314), causing much damage in life and property in Korea. Results show that the threshold value of VWS indicating typhoon intensity change (typhoon to severe tropical storm) is approximately 15 m/s and of REFC ranges 6 to 6.5 $ms^{-1}day^{-1}$ in both cases, respectively. During the period with the intensity of typhoon class, PVs with 3 to 3.5 PVU are present in 360K surface-PV field in the cases. In addition, there is a time-lag of 24 hours between central pressure of typhoon and minimum value of VWS, meaning that the midlatitude upper-level trough interacts with the edge of typhoon with a horizontal distance less than 2,000 km between trough and typhoon. That is, strong midlatitude upper-level divergence above the edge of the typhoon provides a good condition for strengthening the vertical circulation associated with the typhoons. In particular, when the distance between typhoon and midlatitude upper-level trough is less than 1,000 km, the typhoons tend to weaken to STS (Severe Tropical Storm). It might be mentioned that midlatitude synoptic system affects the intensity change of typhoons Rusa (0215) and Maemi (0314) while they moves northward. Thus, these variables are useful for diagnosing the intensity change of typhoon approaching to the Korean peninsula.

돌발홍수 모니터링 및 예측 모형을 이용한 예측(F2MAP)태풍 루사에 의한 양양남대천 유역의 돌발홍수 모니터링

  • 김병식;홍준범;최규현;윤석영
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2006년도 학술발표회 논문집
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    • pp.1145-1149
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    • 2006
  • The typhoon Rusa passed through the Korean peninsula from the west-southern part to the east-northern part in the summer season of 2002. The flash flood due to the Rusa was occurred over the Korean peninsula and especially the damage was concentrated in Kangnung, Yangyang, Kosung, and Jeongsun areas of Kangwon-Do. Since the latter half of the 1990s the flash flood has became one of the frequently occurred natural disasters in Korea. Flash floods are a significant threat to lives and properties. The government has prepared against the flood disaster with the structural and nonstructural measures such as dams, levees, and flood forecasting systems. However, since the flood forecasting system requires the rainfall observations as the input data of a rainfall-runoff model, it is not a realistic system for the flash flood which is occurred in the small basins with the short travel time of flood flow. Therefore, the flash flood forecasting system should be constructed for providing the realistic alternative plan for the flash flood. To do so, firstly, Flash Flood Monitoring and Prediction (FFMP) Model must be developed suitable to Korea terrain. In this paper, We develop the FFMP model which is based on GIS, Radar techniques and hydro-geomorphologic approaches. We call it the F2MAP model. F2MAP model has three main components (1) radar rainfall estimation module for the Quantitative Precipitation Forecasts (QPF), (2) GIS Module for the Digital terrain analysis, called TOPAZ(Topographic PArametiZation), (3) hydrological module for the estimation of threshold runoff and Flash Flood Guidance(FFG). For the performance test of the model developed in this paper, F2MAP model applied to the Kangwon-Do, Korea, where had a severe damage by the Typhoon Rusa in August, 2002. The result shown that F2MAP model is suitable for the monitoring and the prediction of flash flood.

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한반도 영향 태풍의 월별 최대풍 특징과 사례 연구 - 태풍 루사·매미·곤파스·볼라벤을 대상으로 - (Characteristics of Monthly Maximum Wind Speed of Typhoons Affecting the Korean Peninsula - Typhoon RUSA, MAEMI, KOMPASU, and BOLAVEN -)

  • 나하나;정우식
    • 한국환경과학회지
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    • 제28권4호
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    • pp.441-454
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    • 2019
  • The present study analyzes the characteristics of 43 typhoons that affected the Korean Peninsula between 2002 and 2015. The analysis was based on 3-second gust measurements, which is the maximum wind speed relevant for typhoon disaster prevention, using a typhoon disaster prevention model. And the distribution and characteristics of the 3-second gusts of four typhoons, RUSA, MAEMI, KOMPASU, and BOLAVEN that caused great damage, were also analyzed. The analysis show that between May and October during which typhoons affected the Korean Peninsula, the month with the highest frequency was August(13 times), followed by July and September with 12 occurrences each. Furthermore, the 3-second gust was strongest at 21.2 m/s in September, followed by 19.6 m/s in August. These results show that the Korean Peninsula was most frequently affected by typhoons in August and September, and the 3-second gusts were also the strongest during these two months. Typhoons MAEMI and KOMPASU showed distribution of strong 3-second gusts in the right area of the typhoon path, whereas typhoons RUSA and BOLAVEN showed strong 3-second gusts over the entire Korean Peninsula. Moreover, 3-second gusts amount of the ratio of 0.7 % in case of RUSA, 0.8 % at MAEMI, 3.3 % at KOMPASU, and 21.8 % at BOLAVEN showed as "very strong", based on the typhoon intensity classification criteria of the Korea Meteorological Administration. Based on the results of this study, a database was built with the frequencies of the monthly typhoons and 3-second gust data for all typhoons that affected the Korean Peninsula, which could be used as the basic data for developing a typhoon disaster prevention system.

태풍 루사에 의한 김해 OO단지 사면붕괴 발생원인 분석 (An Analysis on the Failure Mechanism of Slope behind a Plant Complex of Gimhae due to Typhoon Rusa)

  • 강인규;류정수;김홍택;백승철
    • 한국방재학회:학술대회논문집
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    • 한국방재학회 2007년도 정기총회 및 학술발표대회
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    • pp.263-266
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    • 2007
  • In this paper, analysis results on the failure of slope behind a Plant Complex of Gimhae due to typhoon Rusa in 2002 are introduced. The left side of the slope was reinforced by soil nails and the right side of the slope was going to construct slope reinforcement works. In the slope failure, the damage area is about $34,000m^2$, the lower width of slope failure is about 230m, the upper width of slope failure is about 50m, and the height of slope failure is about 120m. The elevation of a bedrock in the right side of the slope was lower than the left side of the slope. Due to the depth of weathered soils and weathered rocks in right side of the slope was thick, it will be expected that the effects of pore-water pressure during the rainfalls are large. For the analysis of the failure mechanism, 3-dimensional numerical analysis was carried out by FLAC-3D.

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