• Title/Summary/Keyword: Eastern Sea

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Effect of Temperature on Catches of Anchovy and Laver In Eastern part of South Sea of Korea (한국남해동부해역에서 수온이 멸치와 김 생산량에 미치는 영향)

  • Kim Hyun Ju;Kwoun Chul Hui
    • Proceedings of KOSOMES biannual meeting
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    • 2003.11a
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    • pp.175-180
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    • 2003
  • Water temperature data of National. Fisheries Research and Development Institute (NFRDI) during periods of 19m to 2002 were analyzed to investigate the effect of the water temperature on catches of anchovy and laver in the eastern part of the Southern Waters of Korea The annual catches of anchovy and laver increased gradually although they showed fluctuations each year. Our findings indicated tint the catches cf anchovy and laver were controlled by various oceanographic conditions, mainly water temperature. The appearance of cooler sea surface water, warmer water at 0 to 20 m depth, and bottom water of about $15^{\circ}C$ caused relatively lower catches.

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Trend of Sea Level Change Along the Coast of Korean Peninsula

  • An Byoung Woong;Kang Hyo Jin
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.32 no.6
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    • pp.803-808
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    • 1999
  • Trend of sea level change has been analysed by using the tidal data gathered at the 12 tide stations along the coast of Korean peninsula. Analysis and prediction of the sea level change were performed by Principal Component Analysis (PCA). For the period of 20 years from 1976 to 1995, the trend generally shows a rising pattern such as 0.22 cm/yr, 0.29 cm/yr, and 0.59 cm/yr along the eastern, southern, and western coast of Korea, respectively. On the average the sea level around the Korean peninsula seems to be rising at a rate of 0.37 cm/yr. Adopting the average rate to the sea level prediction model proposed by EPA (Titus and Narrayanan, 1995), the sea level may be approximately 50$\~$60 cm higher than the present sea level by the end of the next century.

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A Systematic Review of the Effectiveness of Eastern-Western Integrative Medicine for Musculoskeletal Disorders (근골격계 질환의 한·양방협진치료 효과 연구에 대한 체계적 문헌 고찰)

  • Lee, Seung-Jin;Shin, Byung-Cheul;Song, Geun-Sung;Hwang, Eui-Hyoung;Yun, Young-Ju;Cho, Hyun-Woo
    • Journal of Korean Medicine Rehabilitation
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    • v.21 no.4
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    • pp.87-96
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    • 2011
  • Objectives: This study aims to systematically evaluate the effectiveness of Eastern-Western integrative medicine for musculoskeletal disorders compared with Eastern or Western Medicine. Methods: Systematic sea-mes of 9 major Korean databases were conducted for articles published up to July 2011. Searching keyword was "Integrative Medicine". Prospective studies dealt with musculoskeletal disorders by Eastern-Western integrative medicine were included. Quality assessment of included studies was evaluated by Cochrane risk of bias tool. Results: 470 studies in total were seamed, Amalg them 7 studies met our inclusion criteria(3 randomized controlled clinical trials, 2 non-randomized controlled trials and 2 uncontrolled clinical trials). Included studies dealt with lumbar pan(3), shoulder pain(2), pain after traffic injury(1), spinal compression fracture(1). Eastern-Western integrative medicine showed better or equal effect for the treatment of various muscloskeletal disorders compared with Eastern or Western medicine alone. Conclusions: There is very weak evidence for the effectiveness of Eastern-Western integrative medicine for musculoskeletal disorders compared with Eastern or Western medicine alone. Well designed randomized controlled trials with rigorous methodology are needed to evaluate the effectiveness of Eastern-Western integrative medicine objectively in the future.

A Study on Sea Surface Temperature Changes in South Sea (Tongyeong coast), South Korea, Following the Passage of Typhoon KHANUN in 2023 (2023년 태풍 카눈 통과에 따른 한국 남해 통영해역 수온 변동 연구)

  • Jae-Dong Hwang;Ji-Suk Ahn;Ju-Yeon Kim;Hui-Tae Joo;Byung-Hwa Min;Ki-Ho Nam;Si-Woo Lee
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.30 no.1
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    • pp.13-19
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    • 2024
  • An analysis of the coastal water temperature in the Tongyeong waters, the eastern sea of the South Sea of Korea, revealed that the water temperature rose sharply before the typhoon made landfall. The water temperature rise occurred throughout the entire water column. An analysis of the sea surface temperature data observed by NOAA(National Oceanic and Atmospheric Administration) satellites, indicated that sea water with a temperature of 30℃ existed in the eastern waters of the eastern South Sea of Korea before the typhoon landed. The southeastern sea of Korea is an area where ocean currents prevail from west to east owing to the Tsushima Warm Current. However, an analysis of the satellite data showed that seawater at 30℃ moved from east to west, indicating that it was affected by the Ekman transport caused by the typhoon before landing. In addition, because the eastern waters of the South Sea are not as deep as those of the East Sea, the water temperature of the entire water layer may remain constant owing to vertical mixing caused by the wind. Because the rise in water temperature in each water layer occurred on the same day, the rise in the bottom water temperature can be considered as owing to vertical mixing. Indeed, the southeastern sea of Korea is a sea area where the water temperature can rise rapidly depending on the direction of approach of the typhoon and the location of high temperature formation.

Influence of Water Temperature on Air Temperature around Eastern and Western Coastal Areas of the Korean Peninsula during Winter (동계 한반도 동·서 연안역 기온에 미치는 수온의 영향)

  • Hong, Chul-Hoon
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.52 no.1
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    • pp.92-96
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    • 2019
  • The influence of water temperature (WT) on air temperature (AT) in the eastern and western coastal regions of the Korean peninsula in the winter was investigated using historical data from the Korean Meteorological Agency (KMA) and the National Institute of Fisheries Science (NIFS), focusing on the relationship between AT and WT. The data analysis shows that, during winter, the AT is generally higher by +1.9 to $+2.7^{\circ}C$ at Kangreung ($37.2^{\circ}N$) in the eastern region than at Inchon ($37.4^{\circ}N$) in the western region, i.e., the AT in the eastern region of the Korean Peninsula tends to be higher overall than that in the western region when similar latitudes are compared. On the other hand, in the winters of 1977-2006, the WT at Sokcho was higher by $+0.8^{\circ}C$ (January) to $+2.3^{\circ}C$ (March) than that at Sochungdo, directly resulting in increased AT ($+1.22^{\circ}C$) at Sokcho. This study suggests that higher AT in the eastern region during winter is caused by the influence of water flow, such as the East Korean Warm Current in the East/Japan Sea.

Interannual variability of spring bloom in the Gulf of Maine observed by SeaWiFS

  • Son, Seung-Hyun;Thomas, Andrew
    • Proceedings of the KSRS Conference
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    • v.1
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    • pp.328-331
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    • 2006
  • Eight years of SeaWiFS data quantify variability in the time/space patterns of spring bloom development in the Gulf of Maine (GOM). Maximum and earliest spring bloom are usually observed over Georges Bank, later on the deep basins from the west to the east GOM, and latest development along the eastern Maine coast in cold, tidally mixed water. Pronounced interannual variability of spring bloom timing, spatial position, and magnitude are shown in the GOM. Strongest negative anomalies are present in April 1998 and 2001 over Georges Bank and the eastern GOM, and in January to April of 2005 over the most of GOM. Positive anomalies are strong in April 2001, 2003 and 2004 in varying locations as well as in February and March 1999. It is suggested that interannaul variability in spring phytoplankton bloom concentrations is strongly associated with changes in water mass and stratification which might be influenced by basin-scale forcing due to large climate change.

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Observations on seaweed attachment to bivalve shells in Peter the Great Bay (East Sea) and their taphonomic implications

  • Lutaenko, Konstantin A.;Levenets, Irina R.
    • The Korean Journal of Malacology
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    • v.31 no.3
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    • pp.221-232
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    • 2015
  • Observations in beach, intertidal and upper subtidal environments in Peter the Great Bay (north-western East Sea) have shown that attached algae were found on empty shells of 13 species of epifaunal and infaunal bivalve mollusks. Thirteen algae species were identified on empty dislodged shells but more than 50 species are known to be epibiotic on living bivalves. The dislodgement of shells with attached algae takes place in semi-enclosed, low-energy areas, as well as those which are open and affected by strong wave action, indicating the large scale of this phenomenon. The significance of seaweed transportation of living mollusks and their empty shells in the coastal zone, involving both taphonomic and ecological processes, is stressed. Algae appear to be a taphonomic agent and play a similar role as compared to birds or hermit crabs, but they act passively and contribute to environmental mixing in death assemblages in coastal environments.

Age Determination and Growth Using the Transverse Section Method of Otoliths Sandfish, Arctoscopus japonicus, in the Eastern Sea of Korea (한국 동해산 도루묵의 이석횡단절단법에 의한 연령사정 및 성장)

  • Lee, Hae-Won;Kang, Yong-Joo
    • Ocean and Polar Research
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    • v.28 no.3
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    • pp.237-243
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    • 2006
  • The ages of sandfish, Arctoscopus japoninis sampled from the eastern sea of Korea, were determined by the transverse section method of otoliths. Ages were assigned to every individual according to the number of opaque zones, and then fitted to the von Bertalanffy growth equation. Estimated equations were $L_t=25.90(1-e^{-0.2976(t+0.4447)})$ for females and $L_t=21.38(1-e^{-0.2917(t+1.2087)})$ for males, where t is age (year) and $L_t$, is body length (mm) at age t. These two equations were significantly different and the body length of females calculated from the equation was larger than that of males except at 1 year old.

A STUDY ON THE SECULAR VARIATION OF ZOOPLANKTON BIOMASS IN THE EASTERN AREA OF THE YELLOW SEA (한국 서해의 동물성 플랑크톤량의 경년 변화에 관한 연구)

  • KIM Yong Sool
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.4 no.3_4
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    • pp.99-102
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    • 1971
  • The present paper deals with secular analysis of zooplankton biomass in the eastern area of the Yellow Sea during the last seven years from 1963 to 1969. The annual variation of zooplankton biomass in the research area shows increase since October 1965, the lowest point. The increasing shape is a parabola expression, BM= 0.0146 $T^2+0.0448T+38.0436$ (BM, Biomass; T, Time, of which zero point is placed at December 1965).

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ASummer Circulation Inferred from the Density (Temperature) Distribution in the Eastern Yellow Sea (密度(水溫) 分布에 의한 夏季黃海東部의 海水循環考察)

  • 성영호
    • 한국해양학회지
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    • v.22 no.2
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    • pp.63-70
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    • 1987
  • Existing oceanographic data indicate that tidal mixing fronts generally prevail in the Eastern Yellow Sea along the Korean coast. In the Western part, these fronts seem to be much weaker. These fronts are believed to be generated mostly by spatially different tidal mixing. The geostrophic adjustment model applied to the observed density structure gives the mixed coastal water flowing northward and the offshore waters(both surface warm and bottom cold waters) flowing southward along the Korean coast. The transport of each water amounts to O(10$\^$4/)m$\^$3//sec.

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