• 한국수산과학회지
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• 제9권4호
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• pp.233-237
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• 1976

충무연안의 한실포에서 인평포에 이르는 굴${\cdot}$홍합 양식장(Fig.1)을 중심으로 1975년 7월부터 1976년 9월까지 매월, 해수, 이토, 굴 및 담치에서 V.parahaemolyticus와 V. alginolyticus의 분포를 조사한 결과를 요약하면 다음과 같다. 1. 해수, 이토, 굴 및 담치, 420개 시료에서 parahaemolyticus 51균주와 V. alginolyticus 160 균주를 분리하였다. 2. 월별분리율은 7월-9월에 가장 높았다. 3. 시료별 parahaemolyticus의 분리율은 이토$(28\%)$, 해수$(24\%)$, 담치$(5\%)$ 및 굴$(4.2\%)$의 순이였다. 4. 조사지점별 분리율은 station 1 과 5가 다른 조사지점에 비해 가장 높았다. 5. 분리된 211 균주의 형태적 생리적 생화학적성상은 전형적인 parahaemolyticus 및 V. alginolyticus와 및 일치하였다.

• Ocean and Polar Research
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• 제29권4호
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• pp.411-418
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• 2007

We studied the bottom morphology and sedimentary environments of the Masan Bay using high-resolution Chirp seismic profiles and sediments data. According to deep-drilled core samples (up to 20 m thick) penetrated into the weathered rock basement, the sediments consist largely of three sediment types: the lower sandy gravel facies (Unit I) of 1-4 m in thickness, the middle sandy mud and/or muddy sand facies(Unit II) of 1-2 m thick and the upper mudfacies (Unit III) of over 10 m in thickness. The sedimentary column above the acoustic basement can be divided into two major sequences by a relatively strong mid-reflector, which show the lower sedimentary sequenc e(T) with parallel to subparallel internal reflectors and the upper sedimentary sequence(H) with free acoustic patterns. Acoustic basement, the lower sedimentary sequence (T), and the upper sequence (H) are well correlated with poorly sorted massive sandy gravels (Unit I), the sand/mud-mixed sediment (Unit II), and the muddy facies(Unit III), respectively. The acoustic facies and sediment data suggest that the Masan bay is one of the most typical semi-enclosed coastal embayments developed during the Holocene sea-level changes. The area of the Masan Bay reduced from about $19\;km^2$ in 1964 to about $13\;km^2$ in 2005 by reclamation, and its bottom morphology changed as a result of dredging of about $2{\times}10^7\;m^3$.

• Animal Systematics, Evolution and Diversity
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• 제12권4호
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• pp.313-329
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• 1996

본 연구는 한.중 황해 국제 공동연구 사업의 일환으로, 1992년 9월 17일부터 10월 2일 사이에 황해의 49개 정점에서 채집된 저서다모류와 그 밖의 냥해에 위치한 광양만 및 인천지역 갯벌 간석지에서 채집된 시료를 대상으로 하였다. 환형동물문 다모강에 속하는 별난가시갯지렁이과 (환형동물문, 다모강)는 한국에서는 아직 보고되지 않은 과 (科)로서 본 연구에서 다음의 2속,3아속에 속하는 6종을 새로이 보고한다: 두갈래별난가시갯지렁이 Cirrophorus furcatus, 민코별난가시갯지렁이 Cirrophorus arma tus, 채찍별난가시갯지랭이 Cirrophorus branchiatus, 태평양별난가시갯지렁이 Aricidea (Aedicira) pacifica, 왓스별난가시갯지렁이 Aricidea(Aricidea) wassi, 솜털별난가시갯지렁이 Aricidea(Acesta) assimilis.

• The Journal of the Acoustical Society of Korea
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• 제25권2E호
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• pp.49-55
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• 2006

Compressional wave velocity (Vp), shear wave velocity (Vs), elastic and physical properties, and electrical resistivity for two core sediments obtained from Southeastern Yellow Sea Mud (SEYSM) were measured and computed. The sediments consist of homogeneous mud (mostly silt and clay) with shells and shell fragments. As a result, the mean grain size is uniform ($7.5-8.5{\Phi}$ throughout the core sediments. However, physical properties such as wet bulk density and porosity show slightly increasing and decreasing patterns with depth, compared to the mean grain size. The compressional (about 1475 m/s in average) and shear wave (about 60 m/s in average) velocities with depth accurately reflect the pattern of wet bulk density and porosity. Electrical resistivity is more closely correlated with compressional wave velocity than physical properties. The computed Vp/Vs and Poisson's ratios are relatively higher (more than 10) and lower (approximately 0.002) than Hamilton's (1979) data, respectively, suggesting the typical characteristics of soft and fully water-saturated marine sediments. Thus, the Vp/Vs ratio in soft and unconsolidated sediments is not likely sufficient to examine lithology and sediment properties. Relationships between the elastic constant and physical properties are correlated well. The elastic constants (Poisson's ratio, bulk modulus, shear modulus) given in this paper can be used to characterize soft marine sediments saturated with seawater.

• Journal of the korean society of oceanography
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• 제37권3호
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• pp.178-186
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• 2002

The mud deposit located to the south of Cheju Island, the East China Sea, is characterized by an upwelling system or, on occasions, a combined upwelling-downwelling system. The water mass here is associated with relatively high suspended matter concentrations. In the present study, a vertical I-D model is used to undertake numerical experiments for evaluating the upwelling and downwelling effects on the suspended particulate matter distribution patterns within the water column. The results show that: (1) because the upwelling or downwelling velocity tends to be of the same order of magnitude as the settling velocity of suspended particles, a number of different patterns of suspended matter concentration distribution are possible, depending on the relative importance of the velocities; (2) the presence of upwelling can enhance the suspended particulate matter concentration; and (3) in an upwelling-downwelling system, maximum concentrations may or may not lie in the middle of the water column, depending on, once again, the interrelationships between the opwelling/downwelling velocities and the settling velocity. Hence, the physical processes associated with upwelling/downwelling appear to be relevant to the suspended material distribution over shelf mud areas.

• 대한통합의학회지
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• 제10권4호
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• pp.121-136
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• 2022

Purpose : Marine therapy is an activity that promotes public health such as constitution improvement, immunity improvement, and anti-aging by utilizing marine therapeutic resources such as seawater, mud, seaweed, salt and sea climate. In Europe developed countries, the marine therapy industry has been developing for centuries, with France, Germany, and Israel leading the way. Currently, it has achieved great industrial achievements and is of great help in improving the human health. The purpose of this study is to investigate how marine therapeutic resources benefit to human health, as well as how to study and utilize their efficacy. We analyzed previous research articles related to the effects of marine therapeutic resources. Methods : The study included a total of 830 published literatures in the last 20 years from the Republic of Korea and other contries. PubMed and Google Scholar were utilized to collect the foreign source while the local scientific publications were accessed through the Korean Education and research Information Service (KERIS) and Korean studies Information Service System (KISS). The keywords used to search foreign literature were "marine therapy", "Thalassotherapy", "seawater", "deep seawater", "saline groundwater", "sand therapy", "mud therapy", "hydrotherapy", "seaweed", "Sun light", "sea salt", "marine animal", and "marine microorganisms" were combined, and for the domestic literature, the keywords were "marine therapy", "marine therapeutic resources", "seawater", and "sand". Results : A total of 830 research papers were found as a result of searching for domestic and international papers related to marine therapeutic resources. The collected documents were classified into 175 seawater resources, 259 marine mineral resources, 41 marine environment, and 355 marine organisms. The efficacy of each marine therapeutic resources was analyzed. By resources type, there were about 213 papers on the efficacy of seaweed, followed by about 175 papers on seawater, 142 on microorganisms, 124 on mud/peat, and sand, salt, minerals and others are appeared in order (Table 1). Conclusion : Korea has the highest marine biodiversity index, excellent tidal flats, four distinct seasons, and various sea environments of the East sea, Yellow sea, South sea and Jeju sea. For this reason, Korea has a much more diverse marine therapeutic resources than other advanced countries in the marine therapy industry. prebiously, we thought that the sea was only valuable as a shipping port and fishery industry. But now, it been shown that the ocean can become a new industrial field which can contribute to human health and well-being by providing healing and therapy to people through the gift of marine resources.

• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2003년도 생물공학의 동향(XIII)
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• pp.65-65
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• 2003

• 한국지구과학회지
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• 제26권5호
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• pp.443-458
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• 2005

낙동강 삼각주 서부 지역의 시추 코아에 대한 퇴적상, 유공충 화석군집 및 AMS $^{14}C$ 연대측정을 수행하고 제4기 퇴적층의 고환경 변화를 분석하였다. 분석 결과, 연구지역의 제4기 후기 퇴적층은 네 개의 퇴적단위(하부로부터 Unit I, II, III, IV)로 구성된다. Unit I은 연구지역에 최초 해침이 일어나기 전 육성 환경에서 형성된 하도 퇴적층이다. Unit Ⅱ는 연안성 규조의 출현으로부터 천해에서 형성된 해성 퇴적층으로 판명되었으며, 퇴적층 상부에는 대기 노출에 의한 건조와 산화에 의한 균열이 발달하고 있어 상위 퇴적단위와 층서적으로 뚜렷하게 구분된다. 이 퇴적단위는 이전 간빙기(MIS 5)에 형성되었을 가능성이 매우 높다. Unit II를 부정합으로 피복하는 Unit III은 약 9,000 yr BP 경 홀로 세 해침이 시작되면서 담수의 영향을 받는 하구의 조간대에서 형성되기 시작하였으며, 해침이 좀 더 진행되면서 약 8,000 yr BP부터는 내대륙붕 환경에서 퇴적되었다. Unit IV는 해수면이 안정된 후, 약 5,000 yr BP를 전후로 한 시기에 낙동강 삼각주의 성장에 의해 형성되었다. 먼저 삼각주의 하부삼각주평원에 해당되는 조간대 퇴적층이 형성되고, 이후 삼각주의 전진에 따라 연구지역은 현재의 삼각주 평원의 배후 지역인 범람원 환경으로 변모하였다.

• Journal of the korean society of oceanography
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• 제39권4호
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• pp.212-221
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• 2004

Concentrations of suspended particulate matters (SPM) and their distribution patterns were monitored three times in the East China Sea during the winter season in 1998 and 1999. SPM concentrations showed significant temporal variations controlled by the atmospheric conditions and sea states. In coastal area, SPM values were about 10-20 mg/l in fair weather conditions, but exceeded 100mg/l during the storm periods. Turbid waters were distributed widespread in the continental shelf of the East China Sea and the coastal area of the Korean Peninsula, and these two areas were connected along a NE-SW direction. The distribution patterns of turbid waters were interpreted as representing the transport behavior of suspended matter. Although the primary source of inner shelf mud deposits of Korea seems to be the Korean Peninsula, contribution from the East China Sea to the coastal area of Korea increases especially during the winter season.

• 한국습지학회지
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• 제8권4호
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• pp.41-47
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• 2006

전 지구적 기후변화로 인하여 습지에서 일어나는 다양한 종류의 생지화학적인 순환에 큰 변화가 관측되고 있다. 특히, 갯벌의 경우 온도변화에 의한 직접적인 환경변화 뿐 아니라 해수면의 상승과 강수량의 변화라는 요인에 의해 간접적인 영향도 받을 것으로 예측된다. 본 논문에서는 온도와 해수의 염도 변화에 따라 갯벌에서 발생하는 메탄양의 변화를 실험실 규모의 실험을 통하여 규명하고자 했다. 시료는 겨울철 강화도 동검도 갯벌에서 채취하여 2 종류의 실험을 수행하였다. 첫 번째 실험에서는 0-5 cm, 5-10 cm 깊이의 토양을 자연 상태의 염도와 50 % 희석한 염도 조건 하에서 20 일간 배양하며 2일 간격으로 메탄 발생량을 측정하였다. 두 번째 실험에서는 5-10 cm 깊이의 토양을 $5^{\circ}C$, $15^{\circ}C$ 에서 자연 상태의 염도와 50 % 희석한 염도 조건 하에서 31일간 배양하며 발생하는 메탄의 양을 하루 간격으로 측정하였다. 첫 번째 실험의 결과 5-10 cm 깊이의 토양에서 메탄이 더 많이 발생하며 염도의 영향은 배양 후반부로 가면서 크게 나타남을 알 수 있었다. 두 번째 실험 결과에서는 $15^{\circ}C$에서 $5^{\circ}C$에서 보다 더 많은 메탄이 발생하였고, 50 % 희석한 염도 조건에서 자연 상태의 염도 조건에서 보다 많은 메탄이 발생하는 것을 관찰할 수 있었다. 이러한 결과는 갯벌에서의 메탄 생성율은 온도 상승과 해수의 화학적 특성의 변화에 따라 많은 영향을 받음을 보여준다. 또한 전 지구적 기후변화로 야기될 온도나 해수 염도의 변화가 메탄의 발생에 영향을 미쳐, 생물학적 되먹임 기작에도 변화가 일어날 것으로 사료된다.