• 한국재난정보학회 논문집
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• 제11권1호
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• pp.23-34
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• 2015

본 연구에서는 충청북도 내 각 지자체를 대상으로 지역별 대설특성을 통한 잠재적 위험요인을 분석하였다. 분석결과, 35년 평균적설량으로 인한 잠재적 위험도는 제천시와 보은군이 가장 높았으며 35년 최대적설량을 통한 잠재적 위험요인에서는 다른 결과가 도출되는 것을 알 수 있었다. 잠재적 위험요인에 대한 지역의 빈도수를 살펴보면 가장 높은 지역은 보은군, 제천시, 괴산군, 영동군, 청주시 순으로 도출되었다. 본 연구는 일반적인 대설특성 뿐만 아니라 잠재적인 위험요인들을 도출하고 그에 대한 위험도를 제시하였다는 점에서 그 의의를 가진다. 본 연구의 결과는 향후 충청북도 각 지자체들의 제설대응체계 및 방안 마련에 기초자료로 활용할 수 있을 것이다.

• 대한교통학회지
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• 제31권6호
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• pp.3-11
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• 2013

본 연구는 악천후가 교통 흐름에 영향을 미칠 것이라는 전제하에 악천후 상황 중 강설에 따른 고속도로 교통류 특성 변화 중에서도 용량 및 속도 변화에 초점을 맞춰 분석하기 위한 것으로, 자료수집과 통계분석을 통해 연구를 진행하였다. 교통류 특성 변화를 설명하는 요소로 교통량, 속도, 밀도를 선정하여 분석하였으며, 자료수집 대상은 경기도권내 3개 기상관측소 인근 4개 고속도로 7개 기본구간을 조사지점으로 선정하였다. 강설수준별 용량 변화를 분석하기 위해 강설수준을 3단계(Light, Medium, Heavy Snow)로 분류하였다. 분석결과 강설수준에 따른 용량 변화를 살펴보면, 기후 양호시 대비 Light Snow(약한 눈)인 경우 13.2% 감소하였으며, Medium Snow(보통 눈)은 18.6%, Heavy Snow(강한 눈)은 32.0% 감소하는 것으로 나타나 강설수준이 높아질수록 용량 감소율은 증가하는 것으로 분석되었다. 기상악화는 도로의 운영 효율을 저하시키는 요인으로 작용할 가능성이 매우 큰 것으로 나타났으며, 이에 따라 향후 이를 고려한 도로 설계 및 운영 방법이 제시되어야 한다.

• 한국수자원학회논문집
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• 제53권4호
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• pp.259-271
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• 2020

우리나라도 최근 들어 과거 눈이 거의 내리지 않던 지역에 폭설이 내리거나 대설에 의한 인명피해가 발생하는 등의 대설 피해가 발생하며, 대설 및 설해 피해에 대한 관심이 증가하고 있다. 그러므로 자연재해저감 종합계획에 대설에 의한 설해 대비를 포함하는 등의 정책적인 변화가 생겼으나, 우리나라는 그동안 대설 피해가 많지 않았었기 때문에 대설이나 적설 자료의 특성에 대한 연구를 다양한 각도에서 수행한 적이 거의 없다. 우리나라의 적설자료는 강우자료와 특성이 다른 경우가 많다. 예를 들어, 우리나라 남해안 일부 지역은 연중 눈이 한 번도 내리지 않는 경우가 다수 있어, 연최대치계열 자료 중에 값이 없는 경우가 빈번히 존재한다. 이에 0이 다수 포함된 자료의 빈도해석을 위해 조건부결합확률분포를 이용하여 확률 밀도함수를 선정하는 방법을 적용하였다. 그 결과 기본 방법에 비해 적합도가 더 높은 확률밀도함수를 구할 수 있었으며, 100년 빈도 이상의 긴 재현기간에서 기존 방법에 비해 대체로 적설심이 작아지는 경향을 보였다. 본 연구에서는 본 연구에서는 0이 다수 포함된 자료의 빈도해석을 위해 조건부결합확률분포를 제안한 선행연구를 적용하여 우리나라 전국의 적설 관측지점에 대한 빈도해석을 수행하고, 그 결과를 설계에 사용되는 값들과 비교하였다. 본 연구의 결과는 향후 수문학적 적용을 위한 적설자료의 관측 및 분석 방법에 대한 세부적인 기준 마련을 위한 기초자료로 활용될 수 있을 것이다.

• 한국환경과학회지
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• 제16권12호
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• pp.1439-1449
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• 2007

Heavy snowfall was occurred over the south-western part of the Korean Peninsula called as Honam Districts, on two days from 21 December 2005. The development mechanism of snowfall and its characteristics were analysed using observation and numerical data provided by Korea Meteorological Administration. In comparison with other years Arctic air mass developed and maintained during all December 2005 due to active planetary waves with three branches. And jet streams at lower and higher levels make easy development of snow convection cells. Especially thermal low induced by mesoscale heat and dynamic sources, also help the developments of convection cells in strong ascension. The understanding the relation between synoptic and mesoscale circumstance, therefore, is also important to predict the heavy snowfall and to prevent the disaster.

• 대기
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• 제19권1호
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• pp.1-8
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• 2009

We need water equivalent unit data of snowfall for the purpose of forecast and hydrology related research area. This study developed new method of automatic recording snowfall as weight unit with circle type plate using stain-gauge loadcell. Field test of instrument carried out at Daegwallyeong Obs. Station from 20 to 23 Jan. 2008 during heavy snowfall. There is 74.2cm snow depth and 54.6mm precipitation by Daegwallyeong Obs. Station. But the instrument of this study recorded 71.0mm of precipitation amount. Because of different observation method can cause more 15.4mm than Daegwallyeong Obs. Station. But this study gives the possibility of observation of new snow fall measurement under freezing conditions of snow. From the observation data the density of snowfall calculated from 0.09 to $1015g/cm_3$ from the observation period. And have a good relations between manual observation and automatic observation data from this study instrument with slope of 1.35 to 1.39.

• 디지털산업정보학회논문지
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• 제13권4호
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• pp.41-48
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• 2017

It is necessary to develop an LED traffic light lens having a snow removal function capable of clearly providing a traffic signal to the driver even when a traffic light is blurred due to heavy snow and wind in the winter season. This study is focused on the research and development of the traffic light lens in the process of developing the LED traffic light with the snow removal function. In the developed traffic light lens, instead of attaching the film heater, the coated nichrome wire was wound into a coil shape and inserted directly into the groove in the lens. The developed heater system facilitates the insertion of the heating wire with high elasticity into a curved lens and can provide a sufficient heat without deformation of the PC lens. The proposed traffic lights were tested in various external environments and the test results showed that complete snow removal is possible without tunnel effect.

• 대기
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• 제29권3호
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• pp.269-282
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• 2019

While it is important to obtain the accurate information on snowfall data due to the increase in damage caused by the heavy snowfall in the winter season, it is not easy to observe the snowfall quantitatively. Recently, snow measurements using a weighing precipitation gauge have been carried out, but there is a problem that high snowfall intensity results in low accuracy. Also, the observed snowfall data are sensitive depending on wind speed, temperature, and humidity. In this study, a new process of quality control for snow water equivalent (SWE) data of the weighing precipitation gauge were proposed to cover the low accuracy of snow data and maximize the data utilization. Snowfall data (SWE) observed by Pluvio, Parsivel, snow-depth meter using laser or ultrasonic, and rainfall gauge in Cloud Physics Observation Site (CPOS) were compared and analyzed. Applying the QC algorithm including the use of number of hydrometeor particles as reference, the increased SWE per the unit time was determined and the data noise was removed and marked by flag. The SWE data converted by the number concentration of hydrometeor particles are tested as a method to restore the QC-removed data, and show good agreement with those of the weighing precipitation gauge, though requiring more case studies. The three events data for heavy snowfall disaster in Pyeongchang area was analyzed. The SWE data with improved quality was showed a good correlation with the eye-measured data ($R^2$ > 0.73).

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.339-342
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• 2003

According to the results of structural safety analysis, allowable safe snow depth for type B(wood frame with single span) was 25.9cm, and those for type A(wood frame with multi span) and type C and D (steel frame with multi span) were 17.6cm, 25.8cm, and 20.0cm respectively. An experiential example study on meteorological disasters indicated that a strong wind damage was experienced once every 20 years, and a heavy snow damage once every 9.5 years. The most serious disaster was a heavy snow and it was found that a half break or complete collapse of structures were experienced by about 70% of farmhouses.

• 한국농공학회논문집
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• 제57권5호
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• pp.13-17
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• 2015

There are many vinyl houses in rural areas. These vinyl houses have occasionally been collapsed due to heavy snow load in winter. If these vinyl houses are collapsed, many farmers get a lot of economical damages. So it is very important to built safe vinyl house that is able to withstand the applied heavy snow load. In this study, compressive buckling and flexural tests were performed to investigate the strength increase of circular mortar filled pipes. The results showed that buckling load and flexural moment of mortar filled pipes were increased 42 % ~ 82 %, 40 % ~ 44 % respectively more than only pipe without mortar. It is recommended that mortar filled pipes as main members of vinyl house have to be used to prevent collapsing due to the severe snow load.

• 교육시설
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• 제13권4호
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• pp.31-42
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• 2006

This study is about an analysis of the relation between the degree of cognition of student's acts within limits when coping with several types of disaster and the degree of cognition of damage by disasters in the method of multiple regression analysis. The dependent variable is the degree of cognition of student's acts within limits and the independent variable is the degree of cognition of damage by disasters such as heavy snow, typhoon, heavy rain, heat, and yellow sand. A survey of graduates of metropolitan area high-schools has found that there are no difference between girls and boys of the degree of cognition of student's acts within limits when coping with disasters. This study finds that the independent variable, which are playgrounds, animals and plants, streets and roads, altitude and incline, gives positive effect to the degree of cognition of student's acts within limits when coping with typhoon or heavy rain in order. The study also finds that the degree of cognition of student's acts within limits when coping with heavy snow is affected positively by streets and roads, playgrounds, altitude and incline in order. It also shows that there are factors that has an effect to the degree of cognition of student's acts within limits when coping with yellow sand and heat. This study proposes suggestions to facility plans based on these facts discovered.