• Title/Summary/Keyword: Kangwon-do coast

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Distribution of Larva and Juvenile of Sand Eel, Ammodytes personatus in Kangwon-do Coast, Korea (강원연안산(産) 까나리 자치어(仔稚漁)의 분포)

  • Han, Kyeong-Ho;Kim, Bok-Kee;Choi, Soo-Ha;Kim, Kwi-Young;Kim, Yong-Uk;Cho, Jae-Kwon
    • Korean Journal of Ichthyology
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    • v.11 no.2
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    • pp.155-162
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    • 1999
  • To study the distribution of larva and juvenile of the sand eel, Ammodytes personatus in the Kangwon coastal, samples were collected by the larva net (RN 80 net) and small drag net at 60 stations from January 1996 to December. Appearance season of larva and juvenile of sand eel was appeared untill the January to June in the Kangwon-do coast, and the densities of them were high in June. Appearance phase, length frequency distribution of larva and juvenile of sand eel were distributed that the average standard length 10.0~30.0mm in the temperature range of $5.0{\sim}6.0^{\circ}C$ at the January to March, and April to June occurred the average standard length 40.0~80.0 mm in the temperature range of $7.2{\sim}12.0^{\circ}C$. It was distributed in southern part of Kangwon-do coast until the February to March 1996. And association of the sand eel migrated to the northern and middle part of Kangwon-do coast at April when surface water temperature was higher than $7.2^{\circ}C$. It was considered that the migration of the abundance larva and juvenile of sand eel in this area is mainly affected by the water temperature.

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Flora of Three River Estuary Areas of the East Coast, Gangwon-do (강원도 동해안 3개 하천 하구역 일대의 식물상)

  • Jung, Hee-Jin;Cheon, Kyeong-Sik;Ok, Gil-Hwan;Yoo, Ki-Oug
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.15 no.2
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    • pp.57-75
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    • 2012
  • This study was carried out to investigate the flora of estuary regions, Namdaecheon, Jusucheon, and Maeupcheon, placed in the east coast of Gangwon-do. The vascular plants were summarized as 441taxa, including 90 families, 277 genera, 388 species, 2 subspecies, 35 varieties, and 6 forms. Number of species in each investigated region was 271taxa of Namdaecheon, 247taxa of Jusucheon, and 285taxa of Maeupcheon, respectively. Among the investigated 441taxa, 7 Korean endemic, 5 rare plants and 37 specially designated plants by Ministry of Environment were also included. Aquatic and hydrophyte plants were collected 41taxa, and the thinophyte and halophyte plants were investigated 22taxa. The naturalized plants were 59taxa, and the percent of naturalized plant species was estimated as 13.3%. Based on the floristic composition, Maeupcheon was estimated as well conserved estuary region among the investigated 3 rivers.

A study on Regional foods in the middle of Chosun Dynasty through Domundaejac ("도문대작(屠門大嚼)"을 통해 본 조선중기 지역별 산출 식품과 향토음식)

  • Cha, Gyung-Hee
    • Journal of the Korean Society of Food Culture
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    • v.18 no.4
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    • pp.379-395
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    • 2003
  • Regional foods is influenced by weather, local and social environment etc. The purpose of this study was to understand that regional foods in the middle of Chosun Dynasty through Domundaejac. Some of representative dishes of the Hansung and Kyonggi-do Area is duck(rice cake) of seasonally celebrated days, hangua(korea confectionary) and rice wine. Typical foods in Chungchong-do Area is included persimmon, jujube, watermelon and wax gourd. Some of the well-known food in Kangwon-do Area is pear, bangpungchuk(gruel), sukebyung(rice cake), woongjijunggua(korea confectionary) and sanat-kimchi(picked mustard leaves and stem) that is seemed characteristics of mountainous section. Some of the famous dishes in Cholla-do Area is backsanja(korea confectionary), tea, chuksun kimchi(bamboo shoot pickle), citrus fruits and ear shell. Kyongsan-do Area ia famous persimmon, bamboo fruit, dasik(korea confectionary) and yakban(glutinous rice cake). Hwanghae-do Area is famed pear and choshi as assumed the eatly form of gochujang(thick soypaste mixed with red pepper). Representative dishes are deljjuk(blue berry), herring, sangat-kimchi(picked mustard leaves and sterm) in Hamgyong-do Area and daemandu(big dumpling) in Pyongan-do Area. The coast area is famous for using lots of sea food. Fresh seafood is consumed raw, and clams, fish and seaweed are liberally added to soups and other dishes. The East coast is catched salmon, flatfish, codfish, sandfish and mackerel The West coast is catched yellow corvenia, lobster, tiny shrimp and large-eyed herring. The South coast is catched sea mussel, codfish and laver.

Epidemiological Survey on Metugonimus yokogawui Infection in the Eastern Coast area of Kangwon-Province, Korea (강원도 동해시 황강흡충 감염의 역학적 조사연구)

  • 안영겸;정평림
    • Parasites, Hosts and Diseases
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    • v.25 no.1
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    • pp.59-68
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    • 1987
  • An epidemiological survey on Metagonimus yokogawai infection was performed in the eastern coast area of Kangwon province. Formalin-ether concentration technique and Stoll's dilution egg counting method were employed to figure out the prevalence and intensity of M. yokogawai infection and eating habits of inhabitants with raw freshwater fish. The results are summarized as follows: 1. The prevalence rate of M. yokogawai infection was 6.6% among a total of 2, 357 examinees; 8.6% (115 out of 1, 345) in male and 4.0% (40 out of 1, 012) in female. 2. The prevalence rates were different by the streams where the examinees were residing: 17.8% along the area of Ohsip-cheon (stream), 11.8% along Maeup-cheon, 1.7% along Hwasang-cheon, 1.3% along Yeongok-cheon, 0.9% along Namdae-cheon, 0.9% along Sa-cheon and 0% in the other streams (Yongchon-cheon, Kangnung Namdae-cheon and Jusoo.cheon) in decreasing order. 3. By social strata, the positive rate was 8.0% (122 out of 1, 521) in general inhabitants and 3.9% (33 out of 836) in school children. 4. By the intensity of infection by means of EPG counts in feces; the light infection (less than 400/EPG) was 74.1%, moderate infection (401-1, 000/EPG) 17.3% and heavy infection (more than 1, 001/EPG) 8.6%. 5. Twelves out of 50 sweetfish (Plecoglossus altivelis) (24%) caught from the streams in eastern coast of Kangwon-Do were infected with metacercariae of M. yokogawai, and the number of larvae detected were 70.7 per 6sh in average. The metacercarial infection rates in fish were also different by the streams; 100% in Ohsip-cheon of Samcheok-Gun, 14.3% in Sa-cheon, 16.7% in Yeongokcheon of Myeongju-Gun and 0% in Namdae-cheon of Yangyang-Gun, respectively. 6. Six hundred ninety live (695) out of 1, 396 inhabitants and school children (49.8%) were experienced in eating raw freshwater fishes (Plecoglossus altivezis, Triboledon hakonensis, Coreoperca sp., Morose sp., Carassius sp. & Cyprinus sp. and Zacco platypus). The data were assayed with the questionnaire collected from the examinees. In summarizing the above results, it is known that the Ohsip-cheon area of Samcheok-Gun is highly infected region, and the other areas of Kangnung Namdae-cheon, Yeongok-cheon and Yangyang Namdae-cheon are very lowly infected or non-infected regions for M yokogawai infection.

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Preliminary Study for Tidal Flat Detection in Yeongjong-do according to Tide Level using Landsat Images (Landsat 위성을 이용한 조위에 따른 영종도 갯벌의 면적 탐지에 관한 선행 연구)

  • Lee, Seulki;Kim, Gyuyeon;Lee, Changwook
    • Korean Journal of Remote Sensing
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    • v.32 no.6
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    • pp.639-645
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    • 2016
  • Yeongjong-do is seventh largest island in the west coast of Korea which is 4.8 km away in the direction of south-west from Incheon. The mudflat area around the Yeongjong-do has variable dimension according to tide level. In addition, Yeongjong-do is important area with high environmental value as wintering sites for migratory birds. The mudflat of Yeongjong-do is also meaningful region because it is used as place of education and tourist attraction. But, there are increasing concerns about preservation of mudflat area caused by artificial development such as land reclamation project and Incheon airport construction. In this paper, mudflat area was detected using Landsat 7 ETM+ images that United States Geological Survey (USGS) is providing the data in 16 days period. The false color composite was made from band 7, 5, and 3 that could dividing boundary between water and land for the purpose of appearance of boundary line in mudflat region. This area was calculated using results of classification based on false color composite images and was digitized through repetitive algorithm during research of period. Therefore, the change of northeastern area in Yeongjong-do was detected according to tide level during 16 years from 2000 to 2015 on the basis of providing period at tide station. This paper will expect as indicator for range of area in same tide level prior to the start of the research for preservation of mudflat. It will be also scientific grounds about change of mudflat area caused by artificial development.

A Study on Offshore Longline Type Aquaculture Facilites, Part 1 : 3-D Nonlinear Static Analyisis of Cable-Buoy-Weight Mooring System (내파성 가리비 연승식 양식시성레 관한 연구(I) - 케이블-부이-중량물 계류시스템의 3차원 비선형 정적해석 -)

  • 신현경;김덕수
    • Journal of Ocean Engineering and Technology
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    • v.10 no.1
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    • pp.92-99
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    • 1996
  • Longline type aquaculture facilities are being used for scallpop culture in 30 m of water 2.5 km off the coast of Joomoonjin, Kangwon-do. In this paper, the facilities are modeled by the cabele-buoy-weight system, subject to the nonlinear behaviors of the mooring lines and the effects of current. Its static configuration is shown as a solution of 3-D nonlinear static equation and Runge-Kutta $4^{th}$ method is employed.

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Studies on the Geographical Distribution of Fresh-water Fishes in East Side Area of Taebaik Mountain Chain (嶺東地方에 棲息하는 淡水魚의 地理的 分布에 關한 硏究)

  • Choi, Ki Chul;Joen, Sang Rin
    • The Korean Journal of Zoology
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    • v.11 no.1
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    • pp.13-21
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    • 1968
  • 1. The authors have collected 40 species of fresh-water fishes at 10 streams located at east side area of Taebaik Mountain Chain, from Songhyon-ri, Hyonnae-myon, Kosung-Kun, Kangwon-do to Chodang cave, Koenduck-myon, Samchok-kun, Kangwon-do from May 25, 1966 to August 30, 1967. 2. Of 40 species 14 are not distributed in the Han River, another 17 are not found in northern part of Wonsan and 11 are not distributed in southern part of Woolchin located at east coast of Korea. 3. Thirty-three species of northern fresh-water fishes, 16 of southern species and 60 of the Han River species were not distributed in the studied area. 4. We consider that the studied area should be included intermediate district of Amur and China subregion. We also believe that the difference of the fish fauna of the studied area and northern part, southern part and the Han River is originated by ecological and geohistorical factors. 5. We consider that Ganthopogon strigatus, Cobitis rotundicaudata, Coreoperca kawamebari, Leucopsarion petersi are distributed in the studied area are remarkable facts. On the other hand, it was quite strange that Gobiogobio, Pseudorasbora parva, Zacco paltypus, Zacco temmincki are not found in the area.

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The Analysis of Changes in East Coast Tourism using Topic Modeling (토핑 모델링을 활용한 동해안 관광의 변화 분석)

  • Jeong, Eun-Hee
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.13 no.6
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    • pp.489-495
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    • 2020
  • The amount of data is increasing through various IT devices in a hyper-connected society where the 4th revolution is progressing, and new value can be created by analyzing that data. This paper was collected total 1,526 articles from 2017 to 2019 in central magazines, economic magazines, regional associations, and major broadcasting companies with the keyword "(East Coast Tourism or East Coast Travel) and Gangwon-do" through Bigkinds. It was performed the topic modeling using LDA algorithm implemented in the R language to analyze the collected 1,526 articles. It was extracted keywords for each year from 2017 to 2019, and classified and compared keywords with high frequency for each year. It was setted the optimal number of topics to 8 using Log Likelihood and Perplexity, and then inferred 8 topics using the Gibbs Sampling method. The inferred topics were Gangneung and Beach, Goseong and Mt.Geumgang, KTX and Donghae-Bukbu line, weekend sea tour, Sokcho and Unification Observatory, Yangyang and Surfing, experience tour, and transportation network infra. The changes of articles on East coast tourism was was analyzed using the proportion of the inferred eight topics. As the result, the proportion of Unification Observatory and Mt. Geumgang showed no significant change, the proportion of KTX and experience tour increased, and the proportion of other topics decreased in 2018 compared to 2017. In 2019, the proportion of KTX and experience tour decreased, but the proportion of other topics showed no significant change.

A GIS-Based Spatial Analysis for Enhancing Classification of the Vulnerable Geographical Region of Highly Pathogenic Avian Influenza Outbreak in Korea (GIS 공간분석 기술을 이용한 국내 고병원성 조류인플루엔자 발생 고위험지역 분류)

  • Pak, Son-Il;Jheong, Weon-Hwa;Lee, Kwang-Nyeong
    • Journal of Veterinary Clinics
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    • v.36 no.1
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    • pp.15-22
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    • 2019
  • Highly pathogenic avian influenza (HPAI) is among the top infectious disease priorities in Korea and the leading cause of economic loss in relevant poultry industry. An understanding of the spatial epidemiology of HPAI outbreak is essential in assessing and managing the risk of the infection. Though previous studies have reported the majority of outbreaks occurred clustered in what are preferred to as densely populated poultry regions, especially in southwest coast of Korea, little is known about the spatial distribution of risk areas vulnerable to HPAI occurrence based on geographic information system (GIS). The main aim of the present study was to develop a GIS-based risk index model for defining potential high-risk areas of HPAI outbreaks and to explore spatial distribution in relative risk index for each 252 Si-Gun-Gu (administrative unit) in Korea. The risk index was derived incorporating seven GIS database associated with risk factors of HPAI in a standardized five-score scale. Scale 1 and 5 for each database represent the lowest and the highest risk of HPAI respectively. Our model showed that Jeollabuk-do, Chungcheongnam-do, Jeollanam-do and Chungcheongbuk-do regions will have the highest relative risk from HPAI. Areas with risk index value over 4.0 were Naju, Jeongeup, Anseong, Cheonan, Kochang, Iksan, Kyeongju and Kimje, indicating that Korea is at risk of HPAI introduction. Management and control of HPAI becomes difficult once the virus are established in domestic poultry populations; therefore, early detection and development of nationwide monitoring system through targeted surveillance of high-risk spots are priorities for preventing the future outbreaks.

Trace (Minor) Elemental and Isotopic Compositions of Aragonitic Mollusk Shells in the Eastern Coast and Cheju Island, Korea (한반도 동해안과 제주도 연안에서 발견되는 아라고나이트질 연체동물 각질의 미량원소 및 탄소와 산소 동위원소 함량의 변화)

  • Ji, Ok-Mi;Woo, Kyung-Sik
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.3 no.3
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    • pp.112-123
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    • 1998
  • The objectives of this study are to investigate the trace elemental and stable isotopic compositions of aragonitic mollusk shells, such as Gomphina veneriformis melanaegis, Mytilidae and Umbonium coastatum, from the eastern coast of Korean peninsula and Cheju Island, and to compare their variations with latitude, that is, the temperature of the ambient seawater at which the skeletons grew. The Mg compositions of Gomphina veneriformis melanaegis tend to decrease with increasing water temperature, whereas those of Mytilidae and Umbonium coastatum do not show any trend. Sr compositions of Mytilidae tend to increase with increasing water temperature, whereas those of Gomphina veneriformis melanaegis decrease. Fe compositions of Umbonium coastatum tend to decrease with increasing water temperature, whereas those of Gomphina veneriformis melanaegis increase. Fe compositions of Mytilidae do not show any trend with water-temperature variations. Ba compositions of all the skeletons do not show any trend with water-temperature variations. Cd compositions of Mytilidae and Umbonium coastatum do not show any trend with increasing water temperature, whereas those of Gomphina veneriformis melanaegis increase. Cu compositions of Gomphina veneriformis melanaegis increase with increasing water temperature, whereas Mytilidae and Umbonium coastatum do not show any trend. Pb compositions of Umbonium coastatum do not show any tend with increasing water temperature, but those of other skeletons increase. Zn compositions of Mytilidae tend to decrease with increasing water temperature, whereas those of Gomphina veneriformis melanaegis increase. Zn compositions of Umbonium coastatum do not show any trend with increasing water temperature. Estimated water temperatures from oxygen isotopic data of all the skeletons are higher than the range of water temperature of the shallow seawater of the East Sea and around Cheju Island. The oxygen isotopic compositions of all the skeletons are well clustered, but they do not show any trend with latitude. Therefore, this could reflect that the organisms may not have secreted their shells in oxygen isotopic equilibrium with ambient seawater due to vital effect. Thus, isotopic compositions of all the organisms in this study may not be suitable for paleotemperature estimate.

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