영일만 수질의 시,공간 변동에 미치는 담수유입의 효과

김영숙 ( Young Sug Kim ),김영섭 ( Young Seop Kim ) 한국환경생물학회 2004 환경생물 : 환경생물학회지 Vol.22 No.1

In order to determine the effect of fresh water inflow from the Heongsan river on the changes of water quality in the Yeongil Bay (Korea), the seasonal changes of water temperature, salinity, chemical oxygen demand (COD), dissolved inorganic nitrogen(DIN) and phosphate phosphorus (PO₄-P) concentrations were examined using the data set obtained five fixed points of Yeongil Bay from 1998 to 2000. The distributions and changes of COD and concentrations of total inorganic phosphorous (TIP) and nitrogen (TIN) at three points Heongsan river, were also compared with those of Yeongil Bay. Based on the correlations of DIN and PO₄-P, it was found that the inflow of freshwater affected on the water quality of Yeongil Bay. Such a complicacy was confirmed by the prominent differences in a few water quality measures between Site 1(the innermost area) and Site 5 (the mouth of the bay). The negative correlations in ΔN/ΔP at sites 1, 2 and 3 of the inner-part of the bay also indicated a large effect of freshwater inflow on the water quality of the bay. The extremely low atomic ratio of an average of 6.4 in ΔN/ΔP compared to the Redfild ratio suggested that the DIN was depleted in the overall bay system. In contrast, it was inferred that the excessive PO₄-P concentration was due to the inflow of freshwater from the Heongsan river.

Study on the shallow gas distribution in Yeongil Bay using seismic attribute analysis

원종필,신정균,하지호,전형구 한국지질과학협의회 2024 Geosciences Journal Vol.28 No.2

Seismic attribute analysis, a method of highlighting important information in seismic data, has been used in various fields. Recently, several studies have used seismic attributes to interpret seismic anomalies associated with subsurface gas. In this study, we applied seismic attribute analysis to seismic data acquired in Yeongil Bay to identify the subsurface gas distribution. Before applying seismic attributes to the Yeongil Bay seismic data, we selected promising seismic attributes and applied them to F3 Block seismic data to analyze the relation between the seismic attributes and seismic anomalies caused by subsurface gas. Since there are previous studies on the subsurface gas in the F3 Block, we could identify the characteristics of the seismic attributes based on the F3 Block seismic data. Then, we applied the selected seismic attributes to the Yeongil Bay seismic data to define the subsurface gas distribution. Through seismic attribute analysis, a three-dimensional gas distribution model of Yeongil Bay was generated, and this model can provide quantitative information on the subsurface geology of Yeongil Bay.

영일만 순환류 발생구조와 해황 특성

윤한삼(Han-Sam Yoon),이인철(In-Cheol Lee) 한국해양환경·에너지학회 2005 한국해양환경·에너지학회지 Vol.8 No.3

We investigated the interactions between coastal waters of the Yeongil Bay, Korea, and oceanic waters of the Eastern Sea, as well as the development mechanism of vertical circulation currents in the bay. The oceanic waters of the bay have an average water temperature of 12.2~18.4℃ and salinity of 33.32-34.43 PSU. Results of spectral analysis have shown that the period of revolution between oceanic and coastal waters is about 0.84-0.91 years in the surface waters and 1.84 years in the bottom layer. The wind direction in the bay shifts between SW and NE, with the main wind direction being SW during the winter period, and water mass movement is influenced by such seasonal variations in wind direction. Vertical circulation currents in the bay are structured by two phenomena: the surface riverine outflow layer from the Hyeong-san River into the open sea and the bottom oceanic inflow layer with high-temperature and salinity into the bay. These phenomena start the spring when the water mass is stable and become stronger in the summer when the surface cold water develops over a 10-day period. Consequently, tidal currents have little influence in the bay; rather, these vertical and horizontal circulation currents play an important role in the transport of the pollutant load from the inner bay to the open sea.

경상북도 영일만에 분포하는 이매패류의 자원조사

차병열,이채성,문태석,박미선,Cha, Byung-Yul,Lee, Chae-Sung,Moon, Tae-Seok,Park, Mi-Seon 한국패류학회 2012 The Korean Journal of Malacology Vol.28 No.2

Bivalves collected by a dredge in Yeongil Bay of Gyeongsangbuk-Do Province, Korea in May, 2010 and August, 2010 were 2 species including Dostinorbis japonicus and Scapharca broughtonii. The total abundance of bivalves were 1,703 inds. and 140.9 kg. Among them, the abundance of D. japonicus were 1,198 inds. and 76.1 kg. And the abundance of S. broughtonii were 505 inds. and 64.8 kg. The shell length by bivalves species were 25.76-67.88 mm (mean, 58.08 mm) in D. japonicus and 46.82-113.74 mm (mean, 76.86 mm) in S. broughtonii consisting mainly of recruitment group. By regional abundance comparison, the bivalves abundance collected in the outside harbor was 1,332 inds. and 105.4 kg, which was much more than that of the inside harbor indicating 371 inds. and 35.5 kg. In terms of size, the bivalves collected in the outside harbor were 49.49-67.88 mm (mean, 58.47 mm) in D. japonicus and 48.21-113.74 mm (mean, 77.48 mm) in S. broughtonii, which were larger than those of the inside harbor. The yearly biomass of the main commercial target species, S. broughtonii by swept area method (SAM) was estimated up to 242.1 tons. However, considering the regional differences of bivalves between the inside harbor and the outside harbor by abundance and size comparison, it might have been overfished to bivalves in the inside harbor.

우리나라 연안해역 난 및 자치어의 분포특성

백정익,지환성,유효재,황강석,김두남 한국수산과학회 2021 한국수산과학회지 Vol.54 No.4

The distribution and abundance of fish eggs and larvae were investigated from February to December 2020 alongthe coastal waters of Korea. The eggs and larvae were identified using the mitochondrial DNA cytochrome c oxidasesubunit I (mtDNA COI) and 16s rRNA gene. During the study period, eggs of overall 45 taxa belonging to 26families were collected and larvae of overall 39 taxa belonging to 23 families were collected. In Yeongil Bay, eggs ofEngraulis japonicus, which accounted for 83.9% of the total population, was the most dominant species, followed bySardinops sagax (4.0%), Repomucenus valenciennei (3.8%) and E. japonicus larvae, which accounted for 34.9% ofthe total population. These were followed by Sebastiscus marmoratus (31.0%). In Gomso Bay, E. japonicus eggs accountedfor 61.7% of the total population, followed by Sillago japonica (14.0%), Johnius grypotus (8.8%) and Pholisfangi larvae, which accounted for 53.5% of the total population, followed by Ammodytes personatus (34.1%). InJinhae Bay, E. japonicus eggs accounted for 86.0% of the total population, followed by Leiognathus nuchalis (4.1%),Konosirus punctatus (3.7%) and E. japonicus larvae, which accounted for 48.7% of the total population, followed byParablennius yatabei (21.6%).

영일만 내,외해역에서 조하대 해조군집 구조의 특성

유종수,Yu,Jong-Su 한국조류학회(藻類) 2003 ALGAE Vol.18 No.4

Algal flora and community structure of benthic marine algae in the subtidal zone, Yeongil Bay area were studied. The number of algal species in the quadrats were identified totally 78: 2 Cyanophyta, 10 Chlorophyta, 19 Phaeophyta, and 47 Rhodophyta. The dominant species based on biomass were Sargassum hornerii, Undaria pinnatifida, and Sargassum thunbergii. Vertical distribution was clear by the representative algae such as, Undaria pinnatifida, Sargassum thunbergii, Sargassum horneri, Corallina spp. in the upper subtidal zone, Undaria pinnatifida, Sargassum horneri, Caulerpa okamurae in the middle zone, and Dictyopteris divaricata in the lower zone.

경상북도 영일만에 분포하는 이매패류의 자원조사

차병열,이채성,문태석,박미선 한국패류학회 2012 The Korean Journal of Malacology Vol.27 No.1

Bivalves collected by a dredge in Yeongil Bay of Gyeongsangbuk-Do Province, Korea in May, 2010 and August, 2010 were 2 species including Dostinorbis japonicus and Scapharca broughtonii. The total abundance of bivalves were 1,703 inds. and 140.9 kg. Among them, the abundance of D. japonicus were 1,198 inds. and 76.1 kg. And the abundance of S. broughtonii were 505 inds. and 64.8 kg. The shell length by bivalves species were 25.76-67.88 mm (mean, 58.08 mm) in D. japonicus and 46.82-113.74 mm (mean, 76.86 mm) in S. broughtonii consisting mainly of recruitment group. By regional abundance comparison, the bivalves abundance collected in the outside harbor was 1,332 inds. and 105.4 kg, which was much more than that of the inside harbor indicating 371 inds. and 35.5 kg. In terms of size, the bivalves collected in the outside harbor were 49.49-67.88 mm (mean, 58.47 mm) in D. japonicus and 48.21-113.74 mm (mean, 77.48 mm) in S. broughtonii, which were larger than those of the inside harbor. The yearly biomass of the main commercial target species, S. broughtonii by swept area method (SAM) was estimated up to 242.1 tons. However, considering the regional differences of bivalves between the inside harbor and the outside harbor by abundance and size comparison, it might have been overfished to bivalves in the inside harbor. 조사기간 동안 경상북도 영일만 내의 총 6개 정점에서 채집된 패류는 피조개와 떡조개 2종 이었다. 패류의 총 채집개체수에서는 1,703마리, 총 생체량은 140.9 kg이었는데, 이중 떡조개가 개체수 1,198마리 (생체량 76.1 kg), 피조개가 개체수505마리 (생체량 64.8 kg) 이었다. 채집된 주요 패류의 각장범위는 떡조개가 25.76-67.88 mm (평균, 58.08 mm), 피조개가 46.82-113.74 mm (평균, 76.86 mm) 로서 성숙한 개체들이었다. 주요 패류의 해역별 채집량에 있어서는 항외지역이 개체수 1,332마리 (생체량 105.4 kg) 로 항내지역의 개체수 371마리 (생체량 35.5 kg) 보다 많았다. 또한, 패류의 크기에 있어서도 항외지역의 패류가 항내지역보다 큰 경향을 나타내었다. 소해면적법에 의한 영일만 내의 피조개 현존량은242톤으로 산정되었으며, 어업인들에 의해 이용되고 있는 피조개의 연 생산량은 17.93-95.53톤이었다.

Levels and Patterns of Chlorobenzenes in Marine Sediments from Yeongil and Ulsan Bays of Korea

( Hyo Bang Moon ),( Hee Gu Choi ),( Sang Soo Kim ) 한국환경분석학회 2002 환경분석과 독성보건 Vol.5 No.1

영일만 형망어업 어획물의 종조성 및 분포 특성

홍성익 ( Sung-eic Hong ),배재현 ( Jae-hyun Bae ),박창두 ( Chang-du Park ),박종명 ( Jong-myung Park ),윤병선 ( Byung-sun Yoon ),안희춘 ( Heui-chun An ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.1

The species composition and distribution of catches by dredge gear in the Yeongil Bay, Korea were investigated on a seasonal basis from February to November, 2015. Total catches consisted of 44 species and 35 families. They were 13 species of fish, 10 species of crustacea, 5 species of echinodermata, 5 species of gastropoda, 4 species of cephalopoda and 3 species of bivalvia. Major catch species was shellfish and had seasonal variations in catch. In spring and winter, the catch of ark shell (Scapharca broughtonii) was increased. Adversely, the catch of admas venus clam (Callithaca adamsi) increased in sunmmer and autumn. Species diversity indices was high as the value of 1.99 in spring, and low to the value of 0.34 in summer. In addition, multi dimentional scaling (MDS) indices also was high in spring as the value of 1.99. In summer, the index was low as the value of 0.34. Similarity analysis based on species data was transformed by fourth root. With the result of cluster analysis and MDS analysis, species was divided into two groups. The first group as Group A consists of winter and spring species and another was Group B made of species in summer and winter.

Bivalve Mollusks in Yeongil Bay, Korea, 1. Introductory Part and Annotated List of Species

Lutaenko Konstantin A.,Je, Jong-Geel,Shin, Sang-Ho Korea Institute of Ocean ScienceTechnology 2003 Ocean and Polar Research Vol.25 No.2

An annotated listing of bivalve mollusks collected at 31 sampling sites in Yeongil Bay (eastern coast of Korea) at a depth of 0-52m is presented here. A total of 98 species belonging to 75 genera and 36 families are enumerated; all species are provided with habitat data (bathymetric distribution and bottom sediments character), given separately far living and dead (empty shells) specimens, and some with taxonomic and zoogeographic comments. Fifty-six species are illustrated with photographs. Astarte hakodatensis Yokoyama, 1920 (Astartidae), Nitidotellina pallidula (Lischke 1871) (Tellinidae) and Lyonsia nuculanoformis Scarlato in Volova et Scarlato, 1980 (Lyonsiidae) are found to be new to the Korean fauna, and the genus Salaputium Iredale, 1924 (Crassatellidae) with one species Salapurium Iredale, 1924(Crassatellidae) with one species Salaputium cf. unicum Hayami and Kase, 1993, previously described as being found only from submarine caves in the Ryukyu Islands, is recorded as being found in the East Sea(Sea of Japan) for the first time.