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북부 동중국해 살오징어(Todarodes pacificus) 유생분포의 계절특성
김중진 ( Jung Jin Kim ),김철호 ( Cheol Ho Kim ),이준수 ( Joon Soo Lee ),김수암 ( Su Am Kim ) 한국수산과학회 2014 한국수산과학회지 Vol.47 No.1
We conducted eight surveys in the northern East China Sea (ECS) in winter (February-April), summer (July), and autumn (October) 2004-2009, to investigate the seasonal distribution of T. pacificus. A total of 482 paralarvae, rang-ing in mantle length (ML) from 1.0 - 17.0 mm, were collected at 73 out of 181 stations. There were higher numbers of paralarvae during the winter and summer months than in the autumn. There was significant seasonal variation in the paralarval mantle lengths; mantle lengths were longer in winter (April) than in summer (July). The position of oceanic fronts in the study area played an important role in restricting paralarval distribution along the inshore edge of the Tsushima Warm Current (TWC). When the TWC expanded to western Jeju Island in winter and autumn, the paralarval distribution range extended to include western Jeju Island. However, when the TWC was located south-east of Jeju Island in the summer, paralarvae were distributed along the frontal zone off southeast Jeju Island. Sites at which paralarval mantle length was <2.0 mm ML indicated that the spawning ground were likely to be within the northern ECS in winter and summer, but north of the study area in autumn.
동중국해 북부해역에서의 살오징어 (Todarodes pacificus) 유생의 분포
김중진 ( Jung Jin Kim ),이화현 ( Hwa Hyun Lee ),김수암 ( Suam Kim ),박철 ( Chul Park ) 한국수산과학회(구 한국수산학회) 2011 한국수산과학회지 Vol.44 No.3
The common squid Todarodes pacificus is an ecologically and commercially important species in Korea and Japan. However, the distribution pattern of its eggs and larvae in Korean waters has not yet been clarified. To determine the horizontal and temporal distribution of common squid larvae in the northern East China Sea, samples collected using paired, 60 cm diameter Bongo nets from the three surveys conducted in August 2003, May 2004 and November 2005 were examined. In addition, the vertical distribution was examined from the samples collected using a 1 m2 MOCNESS in April 1999 (20 m interval down to 100 m). A total of 218 larvae ranging in mantle length (ML) from 1.2 to 17.0 mm were counted at 27 stations. Larval abundance was highest in May 2004. The larvae mainly occurred in the southeastern area of Jeju Island, where the water temperature and salinity at 50 m deep ranged from 15-23℃ and 34-34.6 psu, respectively. Most larvae were collected in the frontal zone, where the Tsushima Warm Current and inshore waters meet. The results from the MOCNESS samples showed that the larvae occurred mostly in 20-80 m depth ranges (about 90%), although collections were only conducted above 100 m. No significant differences in larval mantle lengths (ANOVA, P>0.05) were found among each depth interval. Given the occurrence sites of the larvae <2.0 mm ML, the spawning ground of this species appears to be within the northern East China Sea, mainly to the southeast and northeast of Jeju Island, in early spring.
김중진,Kim, Jung-Jin 한국과학기술단체총연합회 2005 과학과 기술 Vol.38 No.8
하루가 멀게 변하고 발전해 가는 과학기술, 그렇다면 앞으로 20~30년 후 과학기술이 만들어 낼 직업군은 어떤 모습과 형태로 우리에게 다가올 것인지... 이번호에 '들어가기' 글을 시작으로 미래의 유망직업, 인기직업, 이색직업 등에 대해 관련전문가의 연구결과를 중심으로 소개코자 한다.
한국 연근해 고등어(Scomber japonicus)의 성숙 및 산란 특성
김소라 ( So Ra Kim ),김중진 ( Jung Jin Kim ),박희원 ( Hee Won Park ),강수경 ( Sukyung Kang ),차형기 ( Hyung Kee Cha ),백혜자 ( Hea Ja Baek ) 한국수산과학회(구 한국수산학회) 2020 한국수산과학회지 Vol.53 No.1
We investigated the maturity and spawning dynamics of chub mackerel Scomber japonicus in Korean waters using samples collected by a large purse seine fishery from January 2013 to December 2017. We analyzed sex ratio, monthly maturity stage, gonadosomatic index (GSI), Fulton’s condition factor (K), and fork length at 50% group maturity. Spawning occurred from March to June, with a peak in May. We detected a significant difference in sex ratio (χ<sup>2</sup> test, P<0.05). The relationship between fork length and body weight was expressed as BW=0.0025FL<sup>3.4693</sup>. We estimated 50% group maturity at a female fork length of 29.3 cm.
김중진(Jung-Jin Kim),장창국(Chang-guk Jang),박종일,상현규(Hyun-kyu Sang),이희엽(Hee-yeop Lee),박민흥(Min-heung Park) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.10
수도권 도시철도의 승강장과 차량 사이의 간격은 최대 260mm에 달하며 이는 최근의 장애인 및 어린이 등 교통약자의 발빠짐 사고의 원인이 되고 있다. 2006년 3월에 개통한 대전도시철도공사 판암역의 승강장과 차량과의 최대간격은 16.2cm이다. 이러한 간격으로 인한 교통약자의 발빠짐 사고를 방지하기 위해 2016년 7월에 차량과의 간격이 넓은 8개소에 접이식 자동 안전발판 시스템을 설치하여 차량과의 간격을 3cm 이하로 구축했다. 이는 장애인 및 어린이 등의 교통약자를 위한 보다 안전한 도시철도 운영에 도움의 되고 있다. Spacing between the metropolitan area urban railway platform and the vehicle reached a maximum 260mm, this has become a cause of foot missing accident of vulnerable road users such as people with disabilities and children. The maximum distance between the platform and the vehicle, which was opened in March 2006 Daejeon Metropolitan Express Transit Corporation Pan"am Station is 16.2cm. Building in order to prevent the foot missing accident of vulnerable road users due to these intervals, set up a folding automatic safety scaffolding system of the interval is wide eight locations of the vehicle in July 2016, the distance between the vehicle and platform to 3cm below did. This has become a help in the management of a safer city railway for vulnerable road users, such as people with disabilities and children.