• Title/Summary/Keyword: 태풍 사라

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Flood Control Measures of the Nakdong River Basin (낙동강유역 홍수방지대책 제언)

  • 구본충
    • 한국관개배수회지
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    • no.28
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    • pp.24-27
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    • 2002
  • 지난 8월7일부터 8월 15일까지 약 10일동안 계속된 집중호우와 8월말 제15호 태풍 루사로 발생된 낙동강 하류지역의 홍수는 1959년 사라호 태풍이후 처음있는 대수(大水)라고 지역주민들은 말하고 있다. 그리고 단기간에 내린 비의 양은 사라호 때가 많았지만, 10일 이상의 장기간 강우량은 이번이 더 많았고 낙동강 홍수위는 1959년 사라호때보다 높은 것으로 증언하고 있다. 강우관측 자료나 하천변 시설물 흔적을 살펴보더라도 지역주민들의 증언이 옳다는 짐

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Natural Hazard Prediction System for a Private Company (민간보험사의 자연재해예측시스템 구축)

  • Park, Jun-Ho;Jang, Eun-Mi
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2007.10a
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    • pp.193-199
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    • 2007
  • 늘어나는 자연재해에 대응하여 새로운 보험 상품이 개발되고 있으며, 보험료 및 보험보상료의 증가에 따른 재보험율의 조정과정이 과학적 근거하에 작업이 이루어져야함에도 불구하고 2006년까지 이와 같은 재해 규모와 피해를 예측하거나 모의할 수 있는 시스템은 한국에서는 거의 드문 상황이었다. 본 과제의 목적은 남한 지역을 대상으로 하여 지진, 태풍, 해일, 풍수해 등의 주요4대 재해에 대한 정보를 지리정보와 더불어 구축하여, 민간 보험사에서 자연재해에 대응하여 계획을 세우고, 과학적인 기준 마련하는 것이다. 구축된 데이터는 국가NGIS 사업의 결과물인 1: 5,000 수치지도를 근간으로 하여 각 재해별로 참조할 수 있는 각 부처의 자료를 가공하여 격자화 하여 구축하였으며, 민간보험사에 보유하고 있는 물건의 주소를 포인트 위치로 산정하여 지역별로 검색이 가능하도록 구축하였다. K-weather 등의 기상정보서비스를 실시간으로 연결하여, 태풍 및 풍수해 발생시78개 지점의 자료가 실시간으로 입수되어 주변현황을 모의할 수 있도록 하였으며, 종합적인 피해모델의 경우는 주로 물건의 수와 총액수준으로 평가할 수 있도록 하였다. 각 재해에 대한 취약성 함수는 뮌헨 재보험사의 것을 기본으로 하였으나 상세한 변수조정은 실제 자료를 대응시키면서 최적화된 값을 선정하였다. 본 시스템 구축은 과거자료를 중심으로 한 부분과 임의의 태풍 및 강수량을 특정위치에 적용하였을 때, 보험사가 지불해야할 보험금 액수를 산정할 수 있도록 하였으며, 향후 보험 상품의 지역적 차별화에 근거자료로 활용할 수 있을 것으로 사료된다. 각 재해의 총합이 각 행정구역과 격자의 위험도로 상대적인 위험도 주제도가 생산이 됨에 따라 보다 합리적인 민간회사의 의사결정에 GIS가 사용될 수 있음을 보여주는 사례로 연구의 의의를 두겠다.

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A Study on Typhoon Impacts in the Nakdong River Basin Associated with Decaying Phases of Central-Pacific El Niño (중앙태평양 엘니뇨의 쇠퇴특성에 따른 낙동강 유역의 태풍영향 분석)

  • Kim, Jong-Suk;Son, Chan-Young;Lee, Joo-Heon;Moon, Young-Il
    • KSCE Journal of Civil and Environmental Engineering Research
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    • v.34 no.1
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    • pp.135-143
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    • 2014
  • This study classified abnormal sea surface temperature changes of the central pacific region according to three evolution patterns. Focusing on typhoons that affect the Korean Peninsula, the research analyzed typhoon's occurrence spot and track, change in the central pressure characteristics, and the characteristics of change in typhoon precipitation and the number of occurrences of heavy rainfall in the Nakdong River Basin. As a result of analysis, in case of prolonged-decaying years and symmetric-decaying years, typhoon-related summer rainfall and heavy rainy days appeared to be higher than long-term average. But in case of abrupt-decaying years, the pattern of general decrease appeared. This is because typhoon's occurrence spot is located comparatively near the Korean peninsula, typhoon's central pressure is high, and typhoon's route generally moves to Japan. As the outcome, this study is expected to reduce flood damage through analyzing the characteristics of typhoon's activity according to CP El Ni$\tilde{n}$o evolution patterns and the characteristics of local typhoon rainfall. In addition, it is expected to provide useful information for establishing adaptation and mitigation to climate change.

Realtime Tide and Storm-Surge Computations for the Yellow Sea Using the Parallel Finite Element Model (병렬 유한요소 모형을 이용한 황해의 실시간 조석 및 태풍해일 산정)

  • Byun, Sang-Shin;Choi, Byung-Ho;Kim, Kyeong-Ok
    • Journal of the Korea Institute of Military Science and Technology
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    • v.12 no.1
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    • pp.29-36
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    • 2009
  • Realtime tide and storm-surge computations for the Yellow Sea were conducted using the Parallel Finite Element Model. For these computations a high resolution grid system was constructed with a minimum node interval of loom in Gyeonggi Bay. In the modeling, eight main tidal constituents were analyzed and their results agreed well with the observed data. The realtime tide computation with the eight main tidal constituents and the storm-surge simulation for Typhoon Sarah(1959) were also conducted using parallel computing system of MPI-based LINUX clusters. The result showed a good performance in simulating Typhoon Sarah and reducing the computation time.

The Wise Prevention of Flood Disaster (수해를 슬기롭게 이기자)

  • 박무일
    • Journal of the Korean Professional Engineers Association
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    • v.37 no.4
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    • pp.48-50
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    • 2004
  • 해마다 여름이 오면 장마 태풍 홍수란 말이 우리를 두렵게 한다. 이는 우리에게 좋은 측면에서는 우리나라 강우량의 절반을 이 기간에 가져다주어 풍부한 수자원을 제공하지만 한편으로는 풍수해로 인명의 손실과 재산상의 커다란 손해를 주기 때문이다.

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Characteristics of Surface Topography and Sediments before and after the Typhoon Kompasu in the Gochang Open-Coast Intertidal Flat, Korea (태풍 곤파스 전과 후의 고창 개방형 조간대 표층 지형과 퇴적물 특성)

  • Kang, Sol-Ip;Ryang, Woo-Hun;Chun, Seung-Soo
    • Journal of the Korean earth science society
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    • v.40 no.2
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    • pp.149-162
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    • 2019
  • In the macro-tide open coast of the Korean western coast, typhoon effects were investigated in terms of variations on topography, surface sediment, and sedimentary environment, which appeared before and after the typhoon Kompasu of 2010. The Kompasu of small size and strong intensity landed on the southwestern coast of the Korean Peninsula and passed across the inland between September 1st and 2nd in 2010. Topography and surface sediments before and after the typhoon were measured and sampled along the survey line of 22 sites in the Gochang Donghori intertidal flat. The intertidal area was divided into high tidal zone, middle tidal zone, and lower tidal zone on the basis of mean high water level, mean sea level, and mean low water level. Topographic variation before and after the typhoon represented deposition of average 0.03 m in high tidal zone, erosion of average -0.15 m in middle tidal zone, and erosion of average -0.39 m in lower tidal zone, respectively. Surface sediments of the intertidal flat consisted mainly of fine to medium sands, and the ratio of fine sand was the largest both before and after the typhoon. Surface sediments after the typhoon became finer in mean grain size showing well sorting rather than those before the typhoon.

A Study on the Safety Measures for Typhoon Shelter in Jinhae Bay Based on AHP Assessment (AHP 기법 기반 진해만 태풍 피항지 내 안전대책에 관한 연구)

  • Kim, Ni-Eun;Lee, Myoung-Ki;Camliyurt, Gokhan;Park, Do-Hyeong;Kim, Dae-Won;Park, Young-Soo
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.28 no.4
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    • pp.507-514
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    • 2022
  • Jinhae Bay is used as a major typhoon shelter in the southeastern region of Korea. However, when a typhoon strikes, the Jinhae Bay is facing the possibility of marine accidents caused by dragging anchors and the increased number of ships. This paper suggested ways to safely and efficiently manage the port of Jinhae Bay when a typhoon strikes from Vessel traffic service operators in the sea, derived relative importance by conducting an Analytic Hierarchy Process assessment to ship operators, and suggested safety measures reflecting manager and user opinions. In order to select safety measures factors for the AHP survey, VTS operators analyzed the evaluation of measures when a typhoon strikes in Jinhae Bay. As a result of conducting a survey based on the selected safety measure factors, it was found that ship operators consider the safety of ships more than twice as important as efficient management, and comprehensively consider them in the order of management of evacuated ships, management of anchorage area, management of evacuation information, preparation regulations and guidelines, improvement of system equipment, education, publicity, and notification activities. Through the measures and relative importance identified in this paper, it is believed that Jinhae Bay can serve as the basis for safely and efficiently managing typhoon shelters.

Estimation of Storm Surges on the Coast of Busan (부산연안에서 폭풍해일고의 추정)

  • Hur Dong-Soo;Yeom Gyeong-Seon;Kim Ji-Min;Kim Do-Sam;Bae Ki-Sung
    • Journal of Ocean Engineering and Technology
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    • v.20 no.3 s.70
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    • pp.37-44
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    • 2006
  • Each year, the coast of Busan is badly damaged, due to storm surge. The damages are greatly dependent upon the local peculiarities of the region in which the storm surge occurs. So, in order to prevent/reduce recurrence of the disaster due to the storm surge, it is very important to investigate the fluctuation characteristics of the storm surge height, related to the local peculiarities at each coastal area in which the occurrence of the disaster is expected. In this paper, using the numerical model, the storm surge was simulated to examine its fluctuation characteristics at the coast of Busan Typhoons of Sarah (5914), Thelma (8705) and Maemi (0314), which caused terrible damage to the coastal areas alongthe coast of Busan in the past, were taken as an object of the storm surge simulations. Moreover, the storm surge due to virtual typhoons, which were combined with the characteristics of each proposed typhoon (Maemi, Sarah, Thelma), compared to the travel routes of other typhoons, was predicted. As expected, the results revealed that the storm surge heights are enhanced at the coastal region with the concavity like a long-shaped bay. Also, the storm surge heights, due to each typhoon, were compared and discussed at major points along the coast of Busan, related to the local peculiarities, as well as the characteristics and the travel route of the typhoon.