• Title/Summary/Keyword: Inland and mountainous region

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시베리아 고기압 확장시 호남 지방의 강설 분포 - 노령 산맥 서사면 지역을 중심으로 - (The Distribution of Snowfall by Siberian High in the Honam Region - Emphasized on the Westward Region of the Noryung mountain ranges -)

  • 이승호;천재호
    • 대한지리학회지
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    • 제38권2호
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    • pp.173-183
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    • 2003
  • 본 연구에서는 시베리아 고기압의 확장시 호남 지방의 강설 분포와 강설 패턴의 지역성을 파악하기 위해 호남 지방의 15개 기상관측지점의 일강설량 및 구름 자료를 분석하였다. 호남 지방의 강설은 시베리아 고기압에 의한 것이 대부분으로 북서 계절풍에 직접적으로 노출된 서해안과 노령 산맥의 서사면은 강설이 많고, 노령 산맥의 풍하측인 남해안으로 갈수록 적어진다. 특히, 노령 산맥의 서사면 지역에서는 지형적 특색에 따라 강설 분포의 패턴이 다양하여. 해안에 위치한 군산은 강설이 많고 내륙 평야에서 강설이 감소하는 경향을 보인다 한편 내륙으로 기류가 이동하여 산지를 만나면 강제 상승하게 되어 다시 강설이 증가한다. 일반적으로 적운형 구름의 출현 빈도가 높은 지역에서 강설이 많은데, 적운형 구름은 내륙 산지, 해안, 그리고 내륙 평야 순이며, 강설 강도 또한 내륙 산지, 해안, 내륙 평야 순으로 강하다. 특히, 정읍의 경우 배후에 노령 산맥이 가까이 있고 북서 계절풍에 대해 정면으로 노출되어 강설 강도가 가장 강하게 나타난다. 따라서, 호남 지방의 강설은 해안 지역에서의 바다효과에 의한 강설과 내륙 산간 지역에서의 지형 효과에 의한 강설로 구분할 수 있다.

영남지방 지역 및 지대별 담배거세미나방과 파밤나방 성충의 발생소장 (Seasonal Occurrence of Tobacco Cutworm, Spodoptera litura Fabricius and Beet Armyworm, Spodoptera exigua Hübner Using Sex Pheromone Traps at Different Locations and Regions in Yeongnam District)

  • 배순도;김현주;이건휘;박성태
    • 한국응용곤충학회지
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    • 제46권1호
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    • pp.27-35
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    • 2007
  • 영남지방의 지역 및 기후지대별 담배거세미나방과 파밤나방의 발생소장을 각각의 성페로몬을 이용하여 조사하였다. 경람지역에서 담배거세미나방은 3월 중하순부터 11월 중하순까지 발생하였다. 경북지역에서 담배거세미나방은 4월 중하순부터 11월 상중순까지 발생하였으나, 울진에선 5월 하순부터 10월 하순까지 발생하였다. 기후지대별 담배거세미나방의 발생최성기는 남부해안지대에서 9월 중순, 내륙지대 및 분지지대에서 8월 하순, 내륙산간지대에서 8월 중순, 그리고 동해안중부지대에서 9월 상순이었다. 담배거세미나방의 지역별 발생비율은 경남의 경우 진주에서 20.0%로 가장 높았으며, 창녕에서 8.6%로 가장 낮았고, 경북의 경우 성주에서 3.3%로 가장 높았으며, 울진에서 0.8%로 가장 낮았다. 기후지대별 발생비율은 내륙지대에서 43.7%로 가장 높았으며, 다음은 남부해안지대에서 36.3%, 분지지대에서 8.4%, 내륙산간지대에서 7.0%이었고, 동해안중부지대에서 4.6%로 가장 낮았다. 한편, 파밤나방은 경북의 동해안중부지대를 제외하곤 3월 상순부터 11월 중순까지 발생하였다. 포항, 영덕 및 울진의 동해안중부지대에서 파밤나방은 대체로 4월 중순부터 11월 중순까지 발생하였다. 기후지 대별 파밤나방의 발생최성기는 내륙지대, 분지지대 및 내륙산간지대에서 8월 상순, 남부해안지대 및 동해안중부지대에서 8월 하순이었다. 파밤나방의 지역별 발생비율은 경남의 경우 창녕에서 1.6%로 가장 높았으며, 부산에서 0.4%로 가장 낮았고, 경북의 경우 성주에서 37.2%로 가장 높았으며, 울진에서 2.7%로 가장 낮았다. 기후지대별 발생비율은 분지지대에서 약 54.3%로 가장 많았으며, 다음은 내륙산간지대에서 29.9%, 동해안중부지대에서 9.3%, 내륙지대에서 3.9%이었고, 남부해안지대에서 2.6%로 가장 낮았다. 따라서 담배거세미나방은 경남지방에서, 파밤나방은 경북지방에서 다발생 되었고, 기후지대별 담배거세미나방의 발생량은 경남의 내륙지대, 파밤나방의 발생량은 경북의 분지지대에서 가장 많았다. 영남지방에서 담배거세미나방의 발생량은 파밤나방보다 2.4배 많았으나, 최초 발생시기와 발생최성기는 담배거세 미나방보다 파밤나방이 약간 빨랐다.

Numerical Prediction on Snowfall Intensity in the Mountainous Coastal Region

  • Choi, Hyo;Lee, Han-Se;Kim, Tae-Kook;Choi, Doo-Sun
    • 한국환경과학회:학술대회논문집
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    • 한국환경과학회 2003년도 International Symposium on Clean Environment
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    • pp.89-94
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    • 2003
  • The formation of a severe snow storm occurred in the mountainous coastal region near Mt. Taegualyang and Kangnung city in the eastern part of Korea was investigate from 0900LST, December 7 through 9, 2002, using MM5 model. As synoptic scale easterly wind induced a great amount of moisture from the East Sea into the inland coastal region and sea-breeze further induced more moisture from the basin toward the top of the mountain side. The lifted moisture toward the mountain top was cooled down along the eastern slope of the mountain and near the mid of the mountain the moisture was much cooled down with relative humidity of 100% under the air temperature below $O^{\circ}C$, resulting in the formation of snow. Relative humidity of 100% generally occurred at the 5km away from the coast toward the inland mountain and the band of 100% RH was parallel to the coastal line. The 100% band coincided with minimum air temperature band and line.

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대기오염물질의 장거리 수송과 열적저기압의 관계 (Relationship between Thermal Low and Long-Range Transport of Air Pollutants)

  • 이화운;김유근;김해동;정우식;현명숙
    • 한국환경과학회지
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    • 제10권2호
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    • pp.143-151
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    • 2001
  • The atmospheric conditions and the transport mechanism of long-range transport of air pollutants from coastal area to inland area were investigated using regular meteorological data and air pollution data obtatined from the southeastern area of Korea. Daytime temperature over the inland area(Taegu) was higher than that over the coastal area(Pusan) and the temperature difference of about 5~6$^{\circ}C$ when the thermal low most fully developed and the sea level pressure over Taegu was lower than that over Pusan by about 4~5hPa at that time. Therefore this low pressure appeared to the thermally induced low. Air mass polluted from the coastal area during the morning period was transported inland area, at first by the sea breeze and by the large scale wind system toward the thermal low generated in the mountainous inland region. This was explained by the fact that the concentration of air pollutants over Taegu increased throughtout the late afternoon.

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지표수-지하수 연계를 고려한 국내 내륙산간지역 시공간적 지하수자원 관리 취약성 평가 기법 개발 (Development of the spatiotemporal vulnerability assessment method for groundwater resources management at mountainous regions in Korea considering surface water-groundwater interactions)

  • 이재범;아거쑤아모스;김건;양정석
    • 한국수자원학회논문집
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    • 제54권10호
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    • pp.807-817
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    • 2021
  • 본 연구에서는 국내 내륙산간지역의 행정구역을 대상으로 지표수-지하수연계를 고려한 시공간적 지하수자원 관리 취약성 평가를 수행하였다. 내륙산간지역을 4개 산지권역으로 구분하고 지표수-지하수 연계를 고려할 수 있는 공간적 지하수자원 관리 취약성 평가 지표를 선정하였다. 지하수 자원 관리 취약지역 선정 결과 중부산야권역의 파주시, 산악권역의 가평군, 남서산야권역의 구례군, 남동산야권역의 양산시가 선정되었다. 선정된 지역에 대하여 지하수위 및 침투량의 변동에 따른 월 단위 지하수자원 관리 취약 시기 평가를 수행하였다. 월 단위 지하수자원 관리 취약시기 평가결과 12 ~ 2월이 지하수자원 관리에 취약한 시기로 평가되었다. 본 연구의 결과는 지하수자원 관리 취약 지역과 취약 시기 평가 기법 및 결과를 제공함으로써 행정구역 별 보다 효율적인 지하수자원 관리 방안 도출에 기여할 것으로 기대된다.

부산지역에서의 대기흐름과 관련된 $SO_2$농도 3차원 수치모의 (A Three Dimensional Numerical Simulation of $SO_2$ Concentration in Relation with Atmospheric Flow in Pusan Area, Korea)

  • 장은숙;이화운
    • 한국환경과학회지
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    • 제6권4호
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    • pp.359-367
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    • 1997
  • The Characteristics of atmospheric flow and dispersion of air pollutants in the mountainous coastal area were studied using three-dimensional model by the combination of land/sea breezes and transport. It was then applied to Pusan city. As the urban area considered In this study is located in a mountainous coastal area, the atmospheric flow is strongly affected by the land/sea breezes and mountain/valley winds. The typical effects of land/sea breezes on the dispersion and the characteristics of pollutants movement in the region were analysed. The model has been proved to be an useful tool to prodict real time air pollutants transport as shown by the results of application studies In Pusan, Korea which Is an urbanized coastal area with mountainous topography. It was found that the pollutants are differently transported and concentrated as going Inland by the Influence of the sea breeze with topographic changes. By comparing the pollutants concentrations of the stimulated results with those of the observational results, It is shown that stimulated results in this study are in qualitative agreement with observational ones.

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중규모 모델 WRF로부터 모의된 한반도 풍력-기상자원 특성 (Characteristics of a Wind Map over the Korean Peninsula Based on Mesoscale Model WRF)

  • 변재영;최영진;서범근
    • 대기
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    • 제20권2호
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    • pp.195-210
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    • 2010
  • This study uses mesoscale model WRF to investigate characteristics of wind fields in South Korea, a region with a complex terrain. Hourly wind fields were simulated for one year representing mean characteristics of an 11-year period from year 1998 to year 2008. The simulations were performed on a nested grid from 27 km down to 1 km horizontal resolution. Seasonal variation of wind speed indicates that wind is strongest during the spring and winter seasons. Spatial distribution of mean wind speed shows wind energy potential at its peak in mountainous region of Gangwon-do, the east coast, and Jeju Island. Wind speed peaks at night in mountainous and eastern coastal regions, and in the afternoon inland and in the southwestern coastal region. The simulated wind map was verified with four upper-air sounding observations. Wind speed was shown to have a more pronounced overestimation tendency relative to observation in the winter rather than summer. The results of this wind mapping study help identify locations with the highest wind energy potential in South Korea.

Occurrence and Distribution of Weedy Rice in Kyonggi Region

  • Cho, Young-Cheol;Park, Jung-Soo;Park, Kyeong-Yeol;Kim, Hee-Dong;Rho, Young-Deok
    • 한국작물학회지
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    • 제43권4호
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    • pp.254-258
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    • 1998
  • Distribution and occurrence of weedy rice in Kyonggi region were surveyed in 1996. Weedy rice was observed in 1368 fields (54.9%) of total 2490 fields. Almost two thirds of paddy fields in northern mountainous region were contaminated by weedy rice and more severe contamination, three forths of paddy fields, was observed in suburban regions. In those regions, occurrence of weedy rice was greater than those in north-eastern inland and south-western plain regions. The occurrence of weedy rice was higher in water seeding cultivation (66.7%) than other cultivation methods. The number of weedy rice per 10a was 756.7 plants in direct seeding on dry paddy and 379.4 plants in water seeding. The occurrence of weedy rice was higher in fields planted by farmer's seeds than that of paddy fields cultivated by certified seeds, and the longer the farmer's seeds being used, the more weedy rice occurred in paddy field.

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Decision-Making Model Research for the Calculation of the National Disaster Management System's Standard Disaster Prevention Workforce Quota : Based on Local Authorities

  • Lee, Sung-Su;Lee, Young-Jai
    • Journal of Information Technology Applications and Management
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    • 제17권3호
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    • pp.163-189
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    • 2010
  • The purpose of this research is to develop a decision-making model for the calculation of the National Disaster Management System's standard prevention workforce quota. The final purpose of such model is to support in arranging a rationally sized prevention workforce for local authorities by providing information about its calculation in order to support an effective and efficient disaster management administration. In other words, it is to establish and develop a model that calculates the standard disaster prevention workforce quota for basic local governments in order to arrange realistically required prevention workforce. In calculating Korea's prevention workforce, it was found that the prevention investment expenses, number of prevention facilities, frequency of flood damage, number of disaster victims, prevention density, and national disaster recovery costs have positive influence on the dependent variable when the standard prevention workforce was set as the dependent variable. The model based on the regression analysis-which consists of dependent and independent variables-was classified into inland mountainous region, East coast region, Southwest coastal plain region to reflect regional characteristics for the calculation of the prevention workforce. We anticipate that the decision-making model for the standard prevention workforce quota will aid in arranging an objective and essential prevention workforce for Korea's basic local authorities.

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Tropical Night (Nocturnal Thermal High) in the Mountainous Coastal City

  • Choi, Hyo
    • 한국환경과학회지
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    • 제13권11호
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    • pp.965-985
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    • 2004
  • The investigation of driving mechanism for the formation of tropical night in the coastal region, defined as persistent high air temperature over than 25$^{\circ}C$ at night was carried out from August 14 through 15, 1995. Convective boundary layer (CBL) of a 1 km depth with big turbulent vertical diffusion coefficients is developed over the ground surface of the inland basin in the west of the mountain and near the top of the mountain, while a depth of thermal internal boundary layer (TIBL) like CBL shrunken by relatively cool sea breeze starting at 100 km off the eastern sea is less than 150 m from the coast along the eastern slope of the mountain. The TIBL extends up to the height of 1500 m parallel to upslope wind combined with valley wind and easterly sea breeze from the sea. As sensible heat flux convergences between the surface and lower atmosphere both at the top of mountain and the inland coast are much greater than on the coastal sea, sensible heat flux should be accumulated inside both the TIBL and the CBL near the mountain top and then, accumulated sensible heat flux under the influence of sea breeze circulation combined with easterly sea breeze from sea to inland and uplifted valley wind from inland to the mountain top returning down toward the eastern coastal sea surface should be transported into the coast, resulting in high air temperatures near the coastal inland. Under nighttime cooling of ground surface after sunset, mountain wind causes the daytime existed westerly wind to be an intensified westerly downslope wind and land breeze further induces it to be strong offshore wind. No sensible heat flux divergence or very small flux divergence occurs in the coast, but the flux divergences are much greater on the top of the mountain and along its eastern slope than on the coastal inland and sea surfaces. Thus, less cooling down of the coastal surface than the mountain surface and sensible heat transfer from warm pool over the coast into the coastal surface produce nocturnal high air temperature on the coastal inland surfaces, which is not much changed from daytime ones, resulting in the persistence of tropical night (nocturnal thermal high) until the early in the morning.