• 제목/요약/키워드: salty wind

검색결과 12건 처리시간 0.023초

태풍 볼라벤에 의한 제주도 방풍림 조풍(潮風) 피해 (Salty Wind Damages in Windbreak Forests of Jeju Island by Typhoon Bolaven)

  • 최광희;최광용;김윤미
    • 대한지리학회지
    • /
    • 제49권1호
    • /
    • pp.18-31
    • /
    • 2014
  • 이 연구에서는 제주도 지역에서 태풍에 의해 야기되는 조풍(潮風) 발생 및 식생에 나타난 피해의 시 공간적 특징을 밝히고자 하였다. 이를 위해 2012년 8월 하순 제주도를 강타한 태풍 볼라벤(BOLAVEN)의 통과시 기상자료를 분석하고 이후 야외답사를 수행하여 제주도 식생에 나타난 조풍해 정도를 조사하였다. 그 결과, 조풍해는 주로 제주도 남부 및 동부 해안지역에서 발생한 것으로 나타났으며, 태풍이 동반한 강한 남동풍과 상대적으로 적은 강수량이 그 원인으로 분석되었다. 조풍에 의해 해안에서 약 8km 범위 내의 삼나무(Cryptomeria japonica)와 해안지역의 곰솔(Pinus thunbergii)을 포함한 대부분의 식생이 피해를 입었으나, 그 피해정도 및 회복력은 수종별로 차이가 있었다. 조풍에 의한 식생 피해를 줄이기 위해서는 강풍성 마른 태풍이 접근 시 조풍해 발생을 예측하고 방제대책을 마련하는 것이 필요하다.

  • PDF

전남 신안군 한반도해송숲의 곰솔 수세약화 원인 분석 (Causes of Weakening Tree Vigor of Pinus thunbergii in Hanbando Coastal Forest in Shinangun, Jeollanamdo Province)

  • 김선화;박석곤
    • 한국환경생태학회지
    • /
    • 제35권4호
    • /
    • pp.398-407
    • /
    • 2021
  • 한반도해송숲의 지형환경, 기상조건, 토양 이화학적 성질과 곰솔의 생육상태를 조사해, 이곳 곰솔의 수세약화 원인을 찾아내고자 했다. 곰솔의 수세가 불량하거나 고사한 지역(수세불량지)과 대조구로서 곰솔의 생육상황이 양호한 지역(수세양호지)으로 나눠 조사했다. 그 결과, 수세불량지의 입목밀도는 수세양호지보다 유의적으로 높았지만, 수관폭은 반대로 수세양호지에서 더 넓었다. 고사목 개체수와 입목밀도는 서로 부(-)의 상관관계를 보였고, 또 입목밀도와 흉고직경·수고·수관고(crown height)·수관폭 사이에서는 부(-)의 상관관계를 보였다. 즉, 입목밀도가 높으면 개체의 수관이 겹쳐 하부 가지가 죽어 수관고와 수관폭이 작아졌다. 이에 엽량 감소에 따른 광합성량이 줄어들어 수고와 직경의 생장량이 적어졌다고 본다. 이로 인해 수세가 약해지면서 해안사구라서 수분·양분의 부족과 강한 조풍 등의 환경압이 가중되어 해안가 근처의 곰솔이 대규모로 죽은 것으로 판단된다. 한반도해송숲의 고사목 발생과 수세약화 원인은 복합적이지만, 곰솔 생장에 따른 적정한 입목밀도 관리 부족이라는 내부요인을 제1 요인으로 꼽을 수 있다. 또 곰솔 생육에 불리한 토양조건과 조풍, 강풍 등의 환경압을 제2 요인이라고 볼 수 있다.

동절기 기후인자와 염해 오손간의 상관관계 분석 (Analysis on the Correlation between the Meteorological Factors of the Winter Season and the Salt Pollution)

  • 김재훈;김도영;김주한;김필환;한상옥;박강식
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2004년도 하계학술대회 논문집 C
    • /
    • pp.1802-1804
    • /
    • 2004
  • In seashore, outdoor insulators are polluted due to salty wind and the pollution causes the flashover and failure of electric equipments. As well known, the pollution has a close relation with meteorological factors such as wind velocity, precipitation, wind direction, relative humidity, dew point, etc. In this paper we statistically analyzed the correlation between the pollution and the meteorological factors including snowfall and freezing. The multiple regression analysis was used for the statistical analysis; daily measured equivalent salt deposit density(dependent variable) and the meteorological data(independent variable) were used. From the results of this investigation, we verified the influence of snowfall and freezing on the ESDD, which has been overlooked in the preceding investigation.

  • PDF

옥외 절연물의 오손도 예측 기법 및 프로그램 개발 (Development of an Expert Technique and Program to Predict the Pollution of Outdoor Insulators)

  • 김재훈;김주한;한상옥
    • 전기학회논문지
    • /
    • 제56권1호
    • /
    • pp.28-34
    • /
    • 2007
  • Recently, with the rapid growth of industry, environmental condition became worse. In addition to outdoor insulators in seashore are polluted due to salty wind. Also this pollution causes the flashover and failure of electric equipments. Especially the salt contaminant is one of the most representative pollutants, and known as the main source of the accident by contamination. As well known, the pollution has a close relation with meteorological factors such as wind velocity, wind direction, temperature, relative humidity, precipitation and so on. In this paper we have statistically analyzed the correlation between the pollution and the meteorological factors. The multiple regression analysis was used for the statistical analysis; daily measured equivalent salt deposit density(dependent variable) and the weather condition data(independent variable) were used. Also we have developed an expert program to predict the pollution deposit. A new prediction system using this program called SPPP(salt pollution prediction program) has been used to model accurately the relationship between ESDD with the meteorological factors.

염해 오손도 예측기법 개발을 위한 오손물과 기후 인자와의 상관관계 분석 (Regression Analysis Between Climate Conditions and Contaminants for Development of Prediction Method of the Salt Pollution)

  • 김도영;김재훈;이원영;한상옥;박강식
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2004년도 춘계학술대회 논문집 전기설비전문위원
    • /
    • pp.173-175
    • /
    • 2004
  • The degree of contamination on outdoor insulators is one of the most importance factor to determine the pollution level of outdoor insulation. Outdoor insulators in coastal are affected due to salty wind blowing from the seaside. The sea salt is known as the most dangerous pollutant. As known through the preceding study, the generation of salt pollutant and the pollution degree of outdoor insulators have a close relation in accordance with meteorological conditions, such as temperature, humidity, dewpoint, wind velocity and wind direction. Therefore, at first, we have analyzed relation between meteorological conditions and contaminants for development of prediction method. In this paper, we have investigated a statistical estimation technique based on actual data for equivalent salt deposit density(ESDD) of outdoor insulators which were installed in Kochang field test substation with multiple linear regression analysis.

  • PDF

동해안 냉해풍지역의 벼 생육환경 연구 (Study on Rice Growing Environment Against Cold Sea Wind in Eastern Coastal Area of Korean Peninsula)

  • 김정일;이지윤;박동수;박노봉;권오덕;장재기;이지훈;김상열;강항원
    • 한국작물학회지
    • /
    • 제55권2호
    • /
    • pp.133-138
    • /
    • 2010
  • 동해연안지역의 벼 생육부진 및 수량감소의 주된 요인분석을 위하여 해안으로부터 1, 2,3, 5 km의 4개 지점의 기상, 토양 및 벼 생육반응을 조사 분석한 결과는 다음과 같다. 1. 해안거리별 일 평균기온은 차이가 거의 없었으나, 냉수대 출현에 따른 냉해풍 발생시 온도변화는 뚜렷하여 5km에서보다 1 km지점에서 $8^{\circ}C$, 2 km지점 $7^{\circ}C$, 3 km지점 $4^{\circ}C$까지 온도가 낮아졌으며 냉해풍은 하루에도 수차례 발생하였음. 2. 해안거리별 토양특성은 해안에 가까울수록 모래성분이 많고 미사 및 점토성분은 적었으며, 양이온 치환용량이 적어서 작물이 비료성분을 섭취할 수 있는 흡착력이 낮아졌음. 3. 해안에 가까운 재배지역일수록 초장은 작아지고 경수는 적었으며, 출수기는 3~4일 지연되었고, 벼 건물중 및 임실율은 낮아졌음. 4. 수량은 5km보다 1 km지점에서 27~36% 감수되어, 해안에 가까운 재배지역일수록 감수폭이 더 컸으며, 주된 감수요인은 주당수수의 감소가 가장 크게 영향을 미쳤고, 해안 2 km지점에서 90%이상의 수량성을 나타낸 품종은 냉해풍지역의 적응품종인 삼덕벼였음.

신두리 해안 사구지 식생의 식물사회학적 연구 (Phytosociological Study on the Vegetation of Sand Dune in Shindoori Seashore)

  • 안영희
    • 한국환경복원기술학회지
    • /
    • 제6권6호
    • /
    • pp.29-40
    • /
    • 2003
  • Shindoori dune, about 2,000,000$m^2$ in area, is located in the west of the middle area in Korea. Around the sand dune, many diagnostic plants and animals are populated, so it is considered a very important ecosystematic area. This study was carried out to establish for conservation and restoration in Shindoori dune. Our surveys have been accomplished from October, 2002 to September, 2003. Plant communities formed around the sand dune in Shindoori were divided into several patterns and analysed. They have been divided into 9 communities. Community A : Carex pumila community, B : Carex kobomugi community, C : Elymus moWs community, D : Imperata cylindrica var. koenigii community, E: Rosa rugosa community, F: Ischaemum anthephoroides community, G: Vitex rotundifolia community, H : Lathyrus japonica community, I : Oenothera biennis community. The flora surveyed in these communities was constituted of 19 families, 44 genera, 8 varieties, and 40 species. Wild plants such as Calystegia soldanella, Artemisia capillaris, Avena fatua, Mertensia asiatica, Glehnia littoralis and Zoysia sinica were mostly light loving plants and higher resistant plants against the salty wind. Our result from the ranking all surveyed areas by the Bray-Curtis ordination method was very similar to the results from phytosocialogical table work.

항암작용(抗癌作用)이 있는 동물류(動物類)에 대(對)한 문헌적(文獻的) 고찰(考察) (Investigation of Literature Refered to the Animal of Anti-cancer)

  • 임낙철;로석선;강승원
    • 대한한의학회지
    • /
    • 제16권2호
    • /
    • pp.149-176
    • /
    • 1995
  • The results were as follow: 1. In classification of the virulence of medicines, it is the virulent animal that have a deadly poison and the rest is the animal of weak nor non-toxic. 2. In classification of the channel distribution, the most is the medicine that belongs to liver channel, the next are the stomach, lung, kidney and spleen channel. 3. In classification of four characters, the most parts are cool, common and warm medicine and there is a few that is hot and cooling. 4. In classification of five tastes, the most numerous tastes are sweet and salty and the next are acrid, bitter and sour tastes. 5. In classification of the medical action, there are few medicine of invigorating vital energy, tonic therapy and astringent and a great part of the medicine are regulating vital energy and blood, removing blood stasis and mass, clearing away heat-evil and eliminating sputum, calming the river to inhibit the wind-evil and pain control. 6. In classification of the application of cancer, the most numerous disease is the liver cancer and the next are stomach cancer, esophageal cancer, lung cancer, leukemia, uterine cancer,mastitis, brain tumor.

  • PDF

Āyurveda(아유르베다)의 약물 지식에 관한 연구 - 『Suśruta-saṃhitā·Sūtrasthāna (수슈르따-상히따·수뜨라스타나)』를 중심으로 - (A Study of the Āyurveda Herbal theory in the 『Suśruta-saṃhitā·Sūtrasthāna』)

  • 서지영;이병욱;김학동;김기욱
    • 한국의사학회지
    • /
    • 제27권1호
    • /
    • pp.135-156
    • /
    • 2014
  • Through a simple translation and analysis of the "Su$\acute{s}$uta-saṃhit$\bar{a}$(The fascinating tales) S$\bar{u}$trasth$\bar{a}$na(The Introduction)", I have summarized the results of the research into the $\bar{A}$yurveda Herbal theory. 1. The title of chapter 40 is "dravya-rasa-guṇa-vip$\bar{a}$ka-vij$\tilde{n}$anīya(Medcation Taste Nature Effects Digestion)", and it states theoretical knowledge on materia medica. It says that 'matter' is the most important thing, and that it decides the curing effect. Although it does acknowledge the reason behind the doctors that emphasized things like 'taste', it mainly has a critical tone. The difference in philosophies and medical theory can be seen when we compare this to the "Caraka-saṃhit$\bar{a}$", 'theory on taste'. 2. The title of chapter 41 is "dravya-vi$\acute{s}$eṣa-vij$\tilde{n}$anīya(A Discussion on the Characteristics of Materia Medica)", and the contents of the chapter have a similar tone to the thoughts of the S$\bar{a}$mkhya(數論派). All 'matter' was created by the combination of the five elements of earth, water, fire, wind, and ether, and the predominant element makes it have an earth, water, fire, wind, or ether nature. Earth has an unmoving and down going nature, and makes the body strong. Water has an irrigating nature, and moistens the tissue and induces secretion and excretion. Fire has an upward-going nature, and improves sight and complexion. Wind relaxes and dries the body, and makes the mind and body agile. Ether gives flexibility, porosity, and candidness. The title of chapter 42 is "rasa-vi$\acute{s}$eṣa-vij$\tilde{n}\bar{a}$nīya(A Discussion on the Types of Rasa(taste))". "Rasa" is an important concept in $\bar{A}$yurveda. Sometimes it is translated as 'one of the seven types of bodily tissue' and seen as chyle, and sometimes it is seen as the tastes that can be felt with the tongue such as spicy, sweet, sour, bitter, salty, and astringent(澁). Volume 1, chapter 42 of the "Caraka-saṃhit$\bar{a}$" is dedicated to the "types of taste", and in chapter 26, it theorizes the concept of 'taste'.

렴瘡에 對한 文獻的 考察 (A literatual study on the Ecthyma)

  • 김희택;오영선;노석선
    • 한방안이비인후피부과학회지
    • /
    • 제10권1호
    • /
    • pp.209-246
    • /
    • 1997
  • In the literatual study on the Ecthyma, the results were as follows. 1. The pathogenic factors of Ecthyma is divided three parts. One is exogenous pathogenic factors which including the wind evil, wind heat and toxic material produced by wetness evil. Another is endogenous pathogenic factors which including the declination of kidney-yang, impairment of the liver and kidney, the lower classes of yin-fire, accumulation of wetness-heat in the spleen asthenia, impairment of the liver and kidney, wetness-heat of three yang, asthenic heat-syndrome of three yin. The other is pathogenic factors neither endogenous nor exogenous which including the food and living, uncontrol sexual excess, anxiety and angry, injury of skin, injury of insects and animals. 2. Five viscera which was concerned with Ecthyma are liver, spleen and kidney. 3. Frequent region of Ecthyma are S-36(足三里) and C-7(陰交). External Ecthyma was rose to wetness-heat of three yang channel that cured easily. Internal Ecthyma was rose to asthenic heat-syndrome of three yin channel that cured hardly. 4. In the frequency of prescription, the most numerous prescription is Bojungikgitang(補中益氣湯) and the next are Kyukgigo(隔紙膏) and Yukmijihwanghwan(六味地滉丸). 5. In the frequency of medicine, the most medicine is Calomelas(輕粉) which included Hydrargyrum(水銀) and the next are Olibanum(乳香) and Resina Commiphorae Myrrhae(沒藥) which regulating vital energy and pain control medicine used that in order to destroy insects and remove polson. 6. In classification of the medical action, medicine of clearing away summer-heat and heat evil and activating blood circulation to dissipate blood stasis used to be very busy which in order to remove the disorder of vital energy for virulent heat-evil. 7. In classification of four characters, the most part is warm medicine, the next are cold and cool medicine and there is a few that is hot medicine. 8. In classification of five tastes, the most numerous tastes are bitter and acrid, the next are sweet, salty and sour tastes. 9. In classification of virulence of medicine, the most part is non-toxic, the next are weakly and deadly poison. 10. In classification of channel distribution, the most is the medicine that belongs to liver channel, the next are the lung, spleen, stomach and kidney channel.

  • PDF