• Title, Summary, Keyword: Anmyon

Search Result 21, Processing Time 0.035 seconds

Analysis of Water Soluble Organic Carbon (WSOC) and n-alkanes for the Ambient PM10 in the Anmyon Island (안면도 미세먼지의 수용성 유기탄소 및 알칸계 유기성분 분석)

  • Lee, Ji Yi;Kim, Yu Won;Kim, Eun Sil;Lee, Sun Young;Lee, Hyunhee;Yi, Seung-Muk;Kwon, Su Hyun;Kim, Yong Pyo
    • Particle and aerosol research
    • /
    • v.7 no.4
    • /
    • pp.131-138
    • /
    • 2011
  • The concentration levels of n-alkanes and water soluble organic carbon (WSOC) at Anmyon, a Global Atmospheric Watch (GAW) station operated by Korea Meteorological Administration (KMA), has been characterized for the PM10 samples collected in 2010. It was found that the concentrations of WSOC at Anmyon were comparable to those in Seoul and lower than those in Gosan, another background area in Korea. However, the maximum concentration of the WSOC at Anmyon was observed in fall while that at Seoul was in winter. It suggests that the emission and/or transformation characteristics at two areas are different. The concentrations of n-alkanes at Anmyon were slightly lower than at Gosan and about one thirds at Seoul. However, it was found that at Gosan the n-alkanes from natural sources were dominant at Gosan. On the other hand, n-alkanes from anthropogenic sources were dominant at Anmyon. Study directions to further understand the characteristics of aerosols at Anmyon are discussed.

Measurement of Dry deposition at Seoul, Chunchon and Anmyon-do by Using Filter pack Method (필터팩을 이용한 서울과 춘천, 안면도의 건성 강하량 측정)

  • Kim, Man-Goo;Kang, Mi-Hee;Hong, Young-Min;Park, Ki-Jun;Lee, Bo-Kyung;Lee, Dong-Soo;Kim, San
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.17 no.1
    • /
    • pp.19-29
    • /
    • 2001
  • Atmospheric concentrations of acidic pollutant were measured by the 4 stage filter pak method at Chunchon and by the 3 stage filter pack method at Seoul and Anmyon-do from January to December 1998. The sample was collected for 24 hours on every Wednesday. Concentrations of particulate matters were highest at Anmyon-do. The particulate concentration was much higher during the warm season than other seasons. While the particulate concentration was higher during the warm season, the concentration of gaseous matter was higher in winter. Dry deposition flux was calculated by using reported deposition velocities and concentration of pollutants measured in this study. The dry deposition velocities used in this study for SO$_2$, SO$_{4}^{2}$, HNO$_3$,NO$_{3}^{-}$ and NH$_3$ were 0.29, 0.15, 2.08( 2.13 only for Anmyon-do), 0.20 and 1.00cm/sec, respectively. At Chunchon, annual sulfur flux originated from dry deposition was 384 kg/$textrm{km}^2$, and the flux from wet deposition was 782kg/$textrm{km}^2$. Dry deposition of sulfur was 33% of total sulfur deposition. The annual nitrogen flux originated from dry deposition was 1,892kg/$textrm{km}^2$. And the flux from wet deposition was 1,066kg/$textrm{km}^2$. Dry deposition of nitrogen was 64% of total nitrogen deposition. Dry deposition as well as wet deposition have to be considerd in the study on acidification of environment such as soil or watershed.

  • PDF

A Study on the Transition Characteristics of Precipitation Components in Dangjin and Anmyon-do Area (唐津과 安眠島地域 降水 成分의 變化特性에 關한 硏究)

  • Chung, Jin-Do;Lee, Choun-Ho
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.20 no.5
    • /
    • pp.593-601
    • /
    • 2004
  • In this study, we are going to compare the chemical composition of the precipitation that falls in the Dangjin and Anmyon-do areas by analyzing the water soluble components (anion and cation). We also examined the effects of seasonal change and regional difference in those data sets. The [$NO_3\;^- \;+\;SO_4\;^{2-}$] at 49.2${\mu}$eq/l is 67% of the total anion of 73.1${\mu}$eq/l, while that of [$NH_4\;^+\;+\;Ca^{2+}$] at 37.7${\mu}$eq/l is 62% of the cation in Dangjin area. Also, the [$NO_3\;^-\;+\;SO_4\;^{2-}$] concentration of 151.8 (${\mu}$eq/l) is 62% for the total anion of 143.5 (${\mu}$eq/l), and the [$NH_4\;^+\;+\;Ca^{2+}$] concentration of 119.7 (${\mu}$eq/l) is 47% for the cation of 254.3 (${\mu}$eq/l) in Anmyon-do area. The ion composition ratio is shown for the order by 22% of $SO_4\;^{2-}$, 20.8% of $NH_4\;^+$ and 15.4% of $Cl^-$ that is the sum of 58.7% for the total ion composition in Dangjin area, and is the order by 33.8% of $NH_4\;^+$, 16.3% of $SO_4\;^{2-}$ and 11.1% of $Cl^-$ in Anmyon-do area. Furthermore, We predicted that even areas which were previously clean will get acid rain if there is large scale construction there or nearby.

International Flower Exhibition in Anmyon-Do and Its Implications for Flower Industry in Chungnam Region (안면도 국제 꽃박람회의 지역 화훼산업의 발전방안)

  • Kwon, Yong-Dae
    • Korean Journal of Agricultural Science
    • /
    • v.28 no.2
    • /
    • pp.162-172
    • /
    • 2001
  • There have been various flower exhibitions in many countries such as Netherlands, Japan and China so as to encourage the growth of flower industry since they recognize the value of flower as cultural goods. Chungnam Province government, also endeavoring to make the. regional flower industry into high valued agriculture and exporting industry, plans to open the international flower exhibition in Anmyon-Do from April 26th, 2002. This flower show, first held by local government and featuring mega-event tourism, is expected to contribute to initiating flower industry and related business in Chungnam region. However, the flower exhibition may not be said to succeed if it does not play enough to trigger the role in expanding its effect on post growth of regional flower industry. This paper aimed at suggesting strategies of maintaining festival boom of post Anmyon-Do flower fair and contributing to take off of flower agriculture and its related industry as follows; 1) inviting various flower business activities into exhibition places 2) establishing flower village town attracted by tourists 3) devising the flower R&D center 4) organizing helping center for infant flower business group.

  • PDF

International Flower Exhibition in Anmyon Island and Its Impacts on Regional Development (안면도 국제 꽃박람회가 지역개발에 미치는 파급효과)

  • Kwon, Yong Dae
    • Korean Journal of Agricultural Science
    • /
    • v.27 no.1
    • /
    • pp.63-70
    • /
    • 2000
  • Taean county region has been economically lagged behind compared with other areas in Chungnam Province mainly due to disadvantages of the location such as traffic accessibility, social infrastructure and industrial complex. However, recently Taean region has been emerged as newly prospective area because west coastal highway will be constructed to connect Seoul urban area to famous beach sites, recreational facilities along the seaside of Taean county, where International Flower Exhibition will also be held in Anmyon Island for the year of 2002. This Paper aims to explore how International Flower Exhibition is contributing to the development of local economy of Taean County area and to suggest the strategies for the development of this area through promoting spread effects of these international events. It is estimated that although there will be loss of 32,987 thousands won during the period of international flower festival based on the cash flow analysis, long run profits would be 108 trillion won, when calculating indirect benefits derived from the sight seeing, flower sales and other incomes from various activities. In order to maximize post benefits of international flower event, it is suggested that Taean county should pursue the strategies for specializing in cultural events such as family recreational events, beach festival and traditional cultural events, improving the social infrastructure and promoting the local industry such as flower, tourism and advanced technological enterprises.

  • PDF

Fauna of the Crabs on the Coasts of the Western Islands of Korea (한국서해 도서 연안의 게류 분포상)

  • 김훈수
    • The Korean Journal of Zoology
    • /
    • v.5 no.2
    • /
    • pp.13-17
    • /
    • 1962
  • The author colelcted crabs (Tribe Brachyura ) on the coasts of fourteen western islands of South Korea (Paenyong Do, Taechong Do, Sochong Do, Taeyonpyong Do, Kanghwa Do, Yongjong Do, Chagyak Do, Tokchok To. Moktok To. Pukkyoknyolbi Do. Ong Do, ANmyon Do, Pigum Do, and Taehuksan Do) mainly in summers during a period ranging from 1955 to 1962. Of these Islands, Paeknyong , Taehong, Taeyonpyong, Ong, Anmyon, Pigum and Taehuksan Do are the localities where the crabs were investigated firstly by the present author. The collections made by the author consist of 1779 specimens of crabs involving 9 families. 25 genera, 33 species and 5 subspecies (Table2). 23 species of crabs had been reported hitherto from Tokchok To and 7 from Kanghwa Do. In present paper the author adds 1 species to the fauna of crabs of Tokchok To and 7 to that of Kanghwa Do. In present paper the author adds 1 species to the fauna of crabs of Tokchok To and 7 to that of Kanghwa D. Among 38 species or subspecies of crabs collected, Oregonia gracilis, Cancer amphioetus and Chaesmagnathus convexus are new to the fauna of the west coast of Korea. 57 species of crabs are therefore identified in this area. The author collected Pinnotheres cardii on Taechong Do and Scopimera bitympana on Pigum Do. It became, therefore, clear that these two kinds of crabs occur much wider areas than known hitherto in Korea. The nothern limit of the distribution of Ocypoda stinpsoni and Sesarma haematocheir is Kyungki Bay as known already, that of Helice tridens is ,however, more northern part than Kyungki Bay, since they were collected on Paeknyong Do.

  • PDF

Aerosol Optical Thickness of the Yellow Sand from Direct Solar Radiation at Anmyon Island during the Spring of 1998 (안면도에서1998년 봄철에 관측된 황사의 광학적 특징)

  • Shin, Do-Shick;Kim, San;Kim, Jeong-Sik;Cha, Ju-Wan
    • Journal of Korean Society for Atmospheric Environment
    • /
    • v.15 no.6
    • /
    • pp.739-746
    • /
    • 1999
  • The spectral aerosol optical thickness of vertical air columns were measured by a ground-based multi-channel sunphotometer at the BAPMoN station(36$^{\circ}$31'N, 126$^{\circ}$19'E) in Anmyon Island, Korea, from 1 March 1998 to 31 May 1998. We used the data of three yellow sand and two clear sky days in order to analyze the temporal variations in aerosol optical thickness at the station. The basic aerosol optical thickness generally represented smaller than 0.3 in a clear sky and the range 0.5 to 1.1 in yellow sand. Especially the aerosol optical thickness represented larger than 0.9 in a heavy yellow sand. It was found that the aerosol optical thickness of yellow sand was highly increased in comparison with the case of a clear sky andparticles larger than 0.5$mu extrm{m}$ were also increased in the spectral distribution of aerosol volume during yellow sand. Consequently the spectral variations in tropospheric aerosol caused by yellow sand were determined by the number concentration of particles larger than 0.5${\mu}{\textrm}{m}$ and the magnitude of yellow sand.

  • PDF

Paralytic Shellfish Poisoning Toxin Accumulation in Four Mussel Species Fed on Toxic Alexandrium tamarense (독성 Alexandrium tamarense를 섭취한 담치류 4종의 마비성패독 축적)

  • Kim, Young-Soo;Shon, Myung-Back;Kim, Chang-Hoon
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.39 no.1
    • /
    • pp.49-54
    • /
    • 2006
  • Cultured cells of the toxic Alexandrium tamarense were fed to four mussel species, Mytilus coruscus, M. edulis, M. galloprovincialis and Septifer vulgatus, to examine the interspecies and interlocality differences in the ability to accumulate paralytic shellfish poisoning (PSP) toxins. Toxin content of A. tamarense cells varied during culture period. In contrast, toxin composition in the cell (C1,2, GTX1-4 and neoSTX) was constantly stable. In feeding experiment, the four mussel species collected from Geoje intoxicated after uptake of A. tamarense. Toxin content ($average{\pm}SD\;{\mu}g$ STXeq/100 g) of M. coruscus, M. edulis, M. galloprovincialis and Septifer vulgatus were $1,660{\pm}79,\;3,914{\pm}2,242,\;5,626{\pm}1,620\;and\;958{\pm}163$, respectively. Toxin profiles included C1,2, GTX1,4 and neoSTX as the major components, and dcGTX2,3, GTX2,3, neoSTX and STX as the minor ones. Toxin accumulation of three mussel species collected from Pohang, Geoje and Anmyon-do showed interspecies and interlocality differences. Toxin content ($average{\pm}SD\;{\mu}g$ STXeq/100 g) were $91{\pm}4,\;151{\pm}14,\;39{\pm}3$ in M coruscus, $189{\pm}1,\;231{\pm}11,\;206{\pm}15$ in M edu/is and $214{\pm}28,\;326{\pm}30,\;291{\pm}26$ in M. galloprovincialis in order of Anmyon-do, Geoje and Pohang.