• 대한원격탐사학회지
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• 제18권4호
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• pp.201-207
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• 2002

복사전달모델과 KOMPSAT-1/OSMI 자료를 이용하여 황사함지 가능성을 조사하였다. 그리고 황사탐지를 위한 OSMI의 특성을 파악하기 위하여 OSMI와 SeaWiFS의 자료를 이용하여 공간 분광분석과 채널별 스펙트럼 분석을 실시하고, 또한 에어로솔 광학두께를 상호 비교하였다. OSMI와 SeaWiFS 자료를 이용한 x축 방향의 분광분석 결과, 865nm에서 분광특성이 비슷함을 알 수 있었고, 채널별 스펙트럼 분석에서는 765nm과 865nm에서 SeaWiFS의 결과와 비슷하여 이 밴드에서의 OSMI 자료의 활용 가능성을 확인할 수 있었다. 이들 밴드를 이용하여 산출한 OSMI의 황사탐지 화상은 MODIS에서 얻어진 화상과 비슷함을 알 수 있었다. 황사 때의 광학두께는 약 0.8~l.0으로 나타났다.

• Journal of the korean society of oceanography
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• 제39권1호
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• pp.96-106
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• 2004

A total of 116 surface sediment samples were obtained on the Yellow Sea and analyzed for grain size and geochemical elements in order to interpret the present sediment transportation. Thirty-nine cores and 3,070 line-km shallow seismic profiles are analyzed for sedimentary records of Yellow Sea in the past. Results show that the boundary of sediment transport between Korean side and Chinese side is about between $123^{\circ}E$ and $124^{\circ}E$. The similar result is produced from Shi et al. (in this publication). Two cyclonic patterns of surface sediments are recognized in the northeastern and southwestern Yellow Sea, while the strong front zone of the mud patch and sandy sediments are found in the southeastern Yellow Sea (the southwestern part of Korean coasts). The formation of fine-particle sediment packages, called for Northwest Mudbelt Deposit (NWMD), Hucksan Mudbelt Deposit (HSMD) and Jeju Mudbelt Deposit (JJMD), are resulted from eddies (gyres) of water circulations in the Yellow Sea. NWMD has been formed by cyclonic (anticlockwise) eddy. NWMD is composed of thick, homogeneous, relatively semi-consolidated gray clay-dominated deposit. On the other hand, HSMD and JJMD are formed by anticyclonic (clockwise) eddies. They are thick, homogeneous, organic-rich gray, silt-dominated deposit. Both core and surface sediments show that the middle zone across Chinese and Korean side contains bimodal frequency of grain-size distribution, indicating that two different transport mechanisms exist. These mud packages are surrounded by sand deposits from both Korea and China seas, indicating that Yellow Sea, which is the shallow sea and epicontinental shelf, is formed mostly by sand deposits including relict sands. The seismic profiles show such as small erosional/non-depositional channels, sand-ridges and sand-waves, Pleistocene-channelfilled deposits, a series of channels in the N-S major channel system, and thick Holocene sediment package, indicating that more complex sedimentary history exists in the Yellow Sea.

• 대한원격탐사학회지
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• 제6권1호
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• pp.39-47
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• 1990

The first Marine Observation Satellite(MOS) was launched by National Space Development Agency of Japan on February 19, 1987, and it is equipped with three sensons covering visible, infrared, and microwave region. One of them is Visible and Thermal Infrared Radiometer(VTIR) whose main objective is to detect the Sea Surface Temperature(SST). The objective of this study was to process the MOS data using Cray-2 supercomputer, and to assess the SST in the Yellow Sea. In order to implement this objective, the linear regression model between the ground truth data and the corresponding digital number of VTIR in MOS was used to establish the relationship. After testing the significance of the regression model, the SST map of the whole Yellow Sea was derived based on the model. The digital SST map representing the study area showed certain pattern about the SST of Yellow Sea in March and April. In conclusion, the VTIR data in MOS is also useful in investigating SST which provides the information about the Yellow Sea water current in the spring.

• 한국지구과학회지
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• 제43권4호
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• pp.520-531
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• 2022

The Yellow Sea experienced glacio-eustasy sea-level fluctuations during the Quaternary period. In the middle part of the Yellow Sea, the Quaternary successions were accumulated by alternating terrestrial, paralic, and shallow marine deposits that reflected the fluctuating sea levels. A long core of 69.2 m was acquired at the YMGR-102 site (33°50.1782'N and 123°48.3019'E) at a depth of 72.5 m in the middle of the Yellow Sea. A four-layered geoacoustic model was reconstructed for the sedimentary succession. It was based on seismic characteristics from 3.5 kHz SBP and air-gun seismic profiles and 96 grain-size properties in the core sample from YMGR-102. For the underwater simulation and experiments, the in-situ P-wave speeds were calculated using the sound speed ratio of the Hamilton method. The geoacoustic model of YMGR-102 can contribute to the reconstruction of geoacoustic models, reflecting the vertical and lateral variability of the acoustic properties in the continental shelf of the middle Yellow Sea.

• 생명과학회지
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• 제7권1호
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• pp.17-23
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• 1997

해양오염의 진단을 위한 생화학적 오염지표 설정의 기초 연구의 일환으로, 오염이 심각한 서해(또는 황해)산 넙치(Paralchthys olvaceus)의 노 및 근육중의 아세틸콜린에스테라아제(AChE) 및 무털릴콜린에스테라아제(butyrylcho-linesterase:BChE)의 활성, 그리고 전산탈수소효소(lactate dehydrogenase:LDH)의 활성을 분석${\cdot}$평가하였다. 서해안의 양식산의 넙치의 뇌 및 근육증의 AChE의 활성은 동해안의 포항의 자연산 넙치의 노 및 근육의 AChE의 활성 대비 각각 40-50% 미 40-55% 정도나 유의적으로 저하되었을 뿐만 아니라 서해안의 자연산 넙치의 뇌 및 근욱중의 AChE의 활성 대비 각각 15-40% 및 25-35% 정도나 유의적으로 저하되었다. 또 서해안의 양식산 넙치의 뇌 및 근육중의 BChE의 활성은 동해안 포항의 자연산 넙치의 뇌 및 근육중의 BChE의 활성 대비 각각 70-75% 및 65-75% 정도나 유의적으로 저하되었ㅇ르 뿐만아니라 서해안의 자연산 넙치의 뇌 및 근육중의 BChE의 활성 대비 각각 50-75% 및 45-50% 정도나 유의적으로 저하되었다. 한편 서해안의 양식산 넙치의 혈약중의 LDH의 활성은 동해안 포항의 자연산 넙치의 혈액중의 LDH의 활성 대비 10-50%정도나 유의적으로 증가하였을 뿐만 아니라 서해안의 자연산 넙치의 혈액중의 LDH의 활성 대비 20-25% 정도나 유의적으로 증가하였다. 따라서 서해안의 양식산 넙치의 오염 뿐만 아니라 자연산 넙치의 오염 가능성도 있다는 사실을 알 수 있다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 1998년도 Proceedings of International Symposium on Remote Sensing
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• pp.404-408
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• 1998

Yellow sand event has been studied using SeaWiFS data in order to examine the aerosol optical characteristics in the Yellow Sea and their influences on the atmospheric correction for the ocean color remote sensing. Two SeaWiFS images of April 18 and April 25, 1998, representing Yellow Sand event and clear-sky case respectively, are selected for emphasizing the impact of high aerosol concentration on the ocean color remote sensing. It was shown that NASA's standard atmospheric correction algorithm treats yellow sand area as either too high radiance or cloud area, in which ocean color information is not generated. SeaWiFS aerosol optical thickness is compared with nearby ground-based sun photometer measurements and also is compared with radiative transfer simulation in conjunction with yellow sand model, examining the performance of NASA's atmospheric correction algorithm in case of the heavy dust event.

• Journal of the korean society of oceanography
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• 제37권3호
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• pp.187-195
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• 2002

The characteristics of surface circulation in the Yellow Sea and the East China Sea are discussed by analyzing a great deal of current data observed by 142 sets of mooring buoy and 58 sets of drifters trajectories collected in the Yellow Sea and the East China Sea through domestic and abroad measurements. Some major features are demonstrated as bellow: 1) Tsushima Warm Current flows away from the Kuroshio and has multiple sources in warm half year and comes only from Kuroshio surface water in cold half year. 2) Taiwan Warm Current comes mainly from the Taiwan Strait Water in warm half year and comes from the intruded Kuroshio surface water and branches near 27N in cold half year. 3) The Changjiang Diluted Water turns towards Cheju Island in summer and flows southward along the coastal line in winter. 4) The study sea area is an eddy developing area, especially in the southern area of Cheju Island and northern area of Taiwan.

• Fisheries and Aquatic Sciences
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• 제1권1호
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• pp.94-112
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• 1998

The present study dealt with cumaceans (Cumacea: Bodotriidae) collected from the Yellow Sea. Specimens were sampled using a van Veen grab m the Yellow Sea and in. Kyonggi Bay surrounding Inchon, Korea. New figures and redescriptions of the four bodotiid cumaceans are presented including Bodotria ovalis Gamo, 1965, Iphinoe tenera Lomakina, 1960, Eocuma cf. hilgendorfi Marcusen, 1894, and Heterocuma sarsi Miers, 1879. They are newly added in the Korean fauna.

• 해양환경안전학회지
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• 제15권4호
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• pp.339-344
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• 2009

본 연구는 우리나라와 중국 간의 황해 환경에 대한 조사 필요성에 의하여 공동으로 수행한 결과 중 일부이다. 계절에 따른 황해 동물플랑크톤 군집의 변동을 보기 위하여 1998년부터 2003년까지 6년에 걸쳐 매년 1회 3개 선 24개 정점에서 동물플랑크톤을 채집하였다. 채집된 동물플랑크톤 시료는 일정 비율로 분할 후 생물량을 측정하였으며, 1998, 2000, 2002년 등 3개년에 걸쳐 주요 분류군의 경우 종수준까지 동정하였고, 1999, 2001, 2003년 등 3개년은 주요 분류군 수준까지 동정하였다. 이러한 결과에서 황해 동물플랑크톤 군집의 계절적 분포 변동에 따른 특성을 파악하였다. 조사시기에 따른 공간적 분포 양상에 있어 반복성은 나타나지 않았다. 가장 중요 분류군인 요각류의 경우 한국측 해역에서 높은 분포를 보였으며, 모악류의 경우 중국측 해역에서 높았다. 현 결과에서 조사시기 동안 황해를 대표하는 요각류는 Calanus sinicus, Paracalanus parvus s.l., Oithona atlantica, Corycaeus affinis 등 4종으로 이들 종의 밀도 변화가 수산자원의 양에 영향을 미칠 수 있는 중요한 요인으로 생각할 수 있다.

• 대한원격탐사학회지
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• 제32권4호
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• pp.339-351
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• 2016

For the safety of sea, it is important to monitor sea fog, one of the dangerous meteorological phenomena which cause marine accidents. To detect and monitor sea fog, Moderate Resolution Imaging Spectroradiometer (MODIS) data which is capable to provide spatial distribution of sea fog has been used. The previous automatic sea fog detection algorithms were focused on detecting sea fog using Terra/MODIS only. The improved algorithm is based on the sea fog detection algorithm by Wu and Li (2014) and it is applicable to both Terra and Aqua MODIS data. We have focused on detecting spring season sea fog events in the Yellow Sea. The algorithm includes application of cloud mask product, the Normalized Difference Snow Index (NDSI), the STandard Deviation test using infrared channel ($STD_{IR}$) with various window size, Temperature Difference Index(TDI) in the algorithm (BTCT - SST) and Normalized Water Vapor Index (NWVI). Through the calculation of the Hanssen-Kuiper Skill Score (KSS) using sea fog manual detection result, we derived more suitable threshold for each index. The adjusted threshold is expected to bring higher accuracy of sea fog detection for spring season daytime sea fog detection using MODIS in the Yellow Sea.