• Title/Summary/Keyword: South Coast

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On the Annual Variation of Mean Sea Level along the Coast of Korea (한국연안 평균 해면의 연변화)

  • 강용균;이병돈
    • 한국해양학회지
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    • v.20 no.1
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    • pp.22-30
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    • 1985
  • The mean sea level(MSL) along the coast of Korea is high in summer and low in winter, mainly due to the inverse barometric effect and the steric departure. The MSL associated with the inverse barometric effect is spatially uniform and has an amplitude of 8.5$\pm$0.8cm. The thermal departure, with amplitude of 4~8cm, is most dominant in the Yellow Sea. The MSL in the South Sea of Korea is strongly affected by the haline departure, which has an amplitude up to 5cm. The annual range of MSL along the western and eastern coasts of Korea are about 40 and 20cm, respectively. The spatial inhomogeneity of the annual range of MSL arises mainly due to the influence of the Asian monsoon, which amplifies (weakens) the annual MSL along the western (eastern) coast of Korea.

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A Revision of the Suborder Labroidei(Pisces: Perciformes) from Korea (한국산 놀래기아목(농어목) 어류의 분류와 분포)

  • Lee, Wan-Ok;Kim, Ik-Soo
    • Korean Journal of Ichthyology
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    • v.8 no.1
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    • pp.22-48
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    • 1996
  • The toxonomic revision of the suborder Labroidei was made based on the specimens collected from the coasts of Korean Peninsula from 1988 to 1996. The fishes of this suborder in Korea are composed 32 species belonging to 22 genera and five families of Pomacentridae, Cichlidae, Embiotocidae, Labridae, and Scaridae. And the keys to species, genera and families are provided with redescriptions and collection data. Among them the specimens of 21 species were collected and Ditrema viridis of family Embiotocidae was the first record from the coast of Wando-gun, Chollanam-do, Korea. Most species of the suborder Labroidei of Korea were mainly distributed in the coast of Cheju Island and South coast influenced by the warm Kuroshio Current.

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Sea-Level Trend at the Korean Coast

  • Cho, Kwangwoo
    • Journal of Environmental Science International
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    • v.11 no.11
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    • pp.1141-1147
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    • 2002
  • Based on the tide gauge data from the Permanent Service for Meau Sea Level (PSMSL) collected at 23 locations in the Korean coast, the long-term sea-level trend was computed using a simple linear regression fit over the recorded length of the monthly mean sea-level data. The computed sea-level trend was also corrected for the vertical land movement due to post glacial rebound(PGR) using the ICE-4G(VM2) model output. It was found that the PGR-corrected sea-level trend near Korea was 2.310 $\pm$ 2.220 mm/yr, which is higher than the global average at 1.0∼2.0mm/yr, as assessed by the Intergovernmental Panel on Climate Change(IPCC). The regional distribution of the long-term sea-level trend near Korea revealed that the South Sea had the largest sea-level rise followed by the West Sea and East Sea, respectively, supporting the results of the previous study by Seo et al. However, due to the relatively short record period and large spatial variability, the sea-level trend from the tide gauge data for the Korean coast could be biased with a steric sea-level rise by the global warming during the 20th century.

New Records of Marine Algae from KoreaⅠ

  • Oak, Jung-Hyun ;Keum, Yeon-Shim;Hwang, Mi-Sook;Oh, Yoon-Sik
    • ALGAE
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    • v.17 no.3
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    • pp.145-151
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    • 2002
  • Three species of marine algae, two browns and one red were newly reported from the eastern and the southern coast of Korea including Cheju Island. their vegetative and reproductive structures were described. Colpomenia phaeodactyla Wynne et J.N. Norris (Scytosiphonaceae, Phaeophyceae) commonly occured in middle to lower intertidal zone of southern coast. Plants consisted of clusters of elongated and hollow sacs arising from an adherent colpomenioid base. Plurilocular sporangia were multiseriate, forming dense, extensive sori over the erect sacs. Cutleria adspersa (Mertens ex Roth) De Notaris (Cutleriaceae, Phaeophyceae) was collected from subtidal region of Cheju Island. It was characterized by broadly fan-shaped habits with golden brown colour and hair-fringed margines, attached by rhizoids along undersurface. Halarachnion latissimum Okamura (Furcellariaceae, Rhodophyceae) was found adrift from several areas of southern coast. Plants were brownish red, filmy and dlicate, membranaceous roundish fronds. Cystocarps were globular and formed under the cortical layer. Tetrasporangia were oblong and zonately divided.

Monitoring the 2007 Florida east coast Karenia brevis (Dinophyceae) red tide and neurotoxic shellfish poisoning (NSP) event

  • Wolny, Jennifer L.;Scott, Paula S.;Tustison, Jacob;Brooks, Christopher R.
    • ALGAE
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    • v.30 no.1
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    • pp.49-58
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    • 2015
  • In September 2007, reports of respiratory irritation and fish kills were received by the Florida Fish and Wildlife Conservation Commission (FWC) from the Jacksonville, Florida area. Water samples collected in this area indicated a bloom of Karenia brevis, the dinoflagellate that produces brevetoxin, which can cause neurotoxic shellfish poisoning. For the next four months, K. brevis was found along approximately 400 km of coastal and Intracoastal waterways from Jacksonville to Jupiter Inlet. This event represents the longest and most extensive red tide the east coast of Florida has experienced and the first time Karenia species other than K. brevis have been reported in this area. This extensive red tide influenced commercial and recreational shellfish harvesting activities along Florida's east coast. Fourteen shellfish harvesting areas (SHAs) were monitored weekly during this event and 10 SHAs were closed for an average of 53 days due to this red tide. The length of SHA closure was dependent on the shellfish species present. Interagency cooperation in monitoring this K. brevis bloom was successful in mitigating any human health impacts. Kernel density estimation was used to create geographic extent maps to help extrapolate discreet sample data points into $5km^2$ radius values for better visualization of the bloom.

New Records of Marine Algae from Korea II

  • Oak, Jung-Hyun;Keum, Yeon-Shim;Hwang, Mi-Sook;Oh, Yoon-Sik
    • ALGAE
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    • v.20 no.3
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    • pp.177-181
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    • 2005
  • Two species of marine algae, Fauchea spinulosa Okamura et Segawa (Rhodymeniaceae, Rhodophyceae) and Stictyosiphon soriferus (Reinke) Rosenvinge (Chodariaceae, Phaeophyceae) were newly collected from the southern coast and Cheju Island of Korea. Fauchea spinulosa was collected from subtidal zone in the insular region of the southern coast. Plants were erect from the discoidal holdfast with short stipe, pinkish to deep red, cartilageneous, dichotomously and flabellately branched, and 10-15 cm high, 5-15 mm broad. Tetrasporangia are cruciately divided and nemathecia occurred on a side of the branches. Cystocarps were mostly coronate in marginal area and spermatangia were scattered on both sides of branches. Stictyosiphon soriferus commonly occurs on muddy and sandy intertidal flat of Namhaedo located on the southern coast. Plants are epilithic, light brown, terete, 3-5 cm high, and branched heavily in irregular or alternate manner, arising from a small holdfast with rhizoidal clumps. Plurilocular sporangia were scattered in patches and slightly swollen above the cortex of the whole filament. Unilocular sporangia were not found.

The Characteristics of the Fog and Analysis of the Advection.Radiation Fog by KLAPS in Honam Region (호남지방 안개 특성 및 KLAPS를 통한 이류.복사안개 사례 연구)

  • Won, Hyo-Sung;Yu, Keun-Gi;Ryu, Chan-Su
    • Journal of Integrative Natural Science
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    • v.4 no.4
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    • pp.298-310
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    • 2011
  • Recently the traffics and transportation hazzards by fog are tremendously Increased. There occurred the greater traffic disaster by Dense Fog of Oct.2006. In this study frequent occurrences of advection fogs centerd over Honam Prov are investigated. Increment of transportation during the Fog period for 1996~2005(decade)are statistically analyzed with Honam Prov.'s fogs. For Honam west coast(Gunsan, Mokpo), inland of Honam(Junju, Gwangju, Suncheon), Honam south coast(Wando, Yepsu), Wind, Dew point, Diff. of air and sea temp. relative humidity are classified between 12 hours before and on time of fog with three Dimensional Analysis System(KLAPS). High frequencies of advection-radiation Fog occurrence in western Coasts except for Suncheon. The application of fog characteristics analyzed by KLAPS for denser fog over the western coast in Fall to Fog prediction and special advisory issues. The advection-radiation fog can occure favorably when the moisture index is less than $2^{\circ}C$, relative humidity is greater than 90%, but the moisture depth is under 1.5 km. In addition when the height of 925 hPa is rising, then fog occurs, but for sinking is disappearing.

The Typhoon Surges in the Southern Coast of Korea by Typhoon Brenda (태풍 Brenda에 의한 한국 남해안의 해일)

  • LEE In-Cheol;KIM Jong-Kyu;CHANG Sun-duck
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.27 no.5
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    • pp.594-604
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    • 1994
  • The storm surges caused by the typhoon Brenda in 1985 were studied by analysing tidal observation data at 7 stations along the south coast of the Korean peninsula. The tidal deviation at these stations along the coast are discussed in association with meteorological data. The sea level anomalies were studied by means of the Empirical Orthogonal Function (EOF) analysis and the Fast Fourier Transform(FFT) method. From the result of EOF analysis, the temporal and spatial variations of storm surge were described by the first mode of EOF, which is $73\%$ of the total variances during the passage of typhoon Brenda. From the results of FFT spectral analysis, the peak energy of the autospectrum for surge, atmospheric pressure, and wind stress appeared in the low frequency fluctuations band. The result of FFT analysis showed that the typhoon surge was related chiefly to the atmospheric pressure change in an open bay such as Cheju and Keomundo harbor, while it was influenced mainly by the wind stress in the semi-enclosed waters of Yeosu, Chungmu and Kadukdo.

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The Relationship Between Phytoplankton Distribution and Environmental Conditions of the Upwelling Cold Water in the Eastern Coast of the Korean Peninsula (동해남부연안 냉수대 변동과 관련된 해양환경 및 식물플랑크톤의 변동 특성)

  • Oh, Hyun Ju;Suh, Young Sang;Heo, Seung
    • Journal of the Korean Association of Geographic Information Studies
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    • v.7 no.4
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    • pp.166-173
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    • 2004
  • By analyzing the sea surface temperature (SST), phytoplankton and NOAA/AVHRR satellite data of Gijang, located at the eastern coast of the korean peninsula during the period of 2001 to 2003, we have analyzed the daily variation in the upwelling cold water, phytoplankton, and chlorophyll a. The SST of Gijang coast appealed rapid change due to the temporal and spatial variation of the upwelling cold water. This in turn led to an increase in the number of phytoplanktons and other varieties of organisms inhabiting in the Gijang coastal region.

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Environmental Changes Due to Planting Pine Trees on the Coastal Dunes Along the East Coast of Korea - Case Study of Osan Beach in Yangyang-gun - (곰솔 조림으로 인한 동해안 사구의 환경변화 - 양양군 오산해변을 사례로 -)

  • Choi, Kwang Hee;Kong, Hak-Yang
    • Journal of The Geomorphological Association of Korea
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    • v.27 no.1
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    • pp.21-31
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    • 2020
  • Planting pine trees on the coastal dunes has been carried out along the East coast as well as West coast of South Korea. Although the artificial forestation has been regarded as a good policy that help to protect the coastal area from natural disasters, but its real effect to the landscapes is still unknown. In this study, we have installed a monitoring site with an automated weather station to study requirements for dune formation and its environmental changes in Osan beach, Yangyang-Gun, Gangwon Province. We analyzed the meteorological data collected from 2010 to 2019 and vegetational changes in the study area. As a result, the wind speed is decreased by around 30% and the pine-covered area is increased by around 300m2 after planting Japanese Black Pine in 2015. At present, it seems that the eolian transport of sand particle is minimal, because the dominant winds are the westerly winds which is not landward but seaward, and because the surface roughness length is about 0.5m which is similar to that in the deciduous forest.