• The Science & Technology
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• v.32 no.11 s.366
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• pp.12-13
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• 1999

바다는 무한한 자원의 보고이다. 미국ㆍ일본ㆍ중국 등 선진국에선 이미 바다의 개발과 보호를 위한 장기 전략을 세우고 이미 실처네 옮기고 있다. 바다를 경사하던 우리나라에서도 60년대부터 선원, 조선 수출 등 바다관련산업이 등장하여 우리나라 경제발전의 견인차 역할을 해왔다. 당장 투자효과가 나지 않더라도 해양기술 개발과 축적을 위해 과감한 투자가 앞서야 하겠다.

• Journal of Korea Port Economic Association
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• v.37 no.1
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• pp.1-18
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• 2021

A coastal marine ranching project in Uleungdo had been conducted for 5 years from 2013 to 2017 with investment costs of 5 billion won, for the special purpose of the deployment of artificial reefs, the release of young fishes. The paper focuses on an ex-post analysis of the economic feasibility for the project after completing the project, which is apart from a preliminary viability. For economic analysis, the economic benefits are derived from direct benefits including increasing effects of fisheries income and saving effects of harvesting costs, and indirect benefits including increasing effects of recreational fishing and preservation effects of coastal marine ecosystems while economic costs include releasing and purchasing costs of artificial reef and juvenile fish, R&D costs, maintenance costs and harvesting costs. The result shows that the project should not be accepted according to NPV=-0.125 billion won, IRR=4.5% and B/C ratio=0.98 under Scenario 1 which considers direct benefits and indirect benefits excluding the preservation values, while the project should be accepted under Scenario 2 indicating NPV=30.9 billion won, IRR=11.3% and B/C ratio=1.49 which considers the direct benefits as well as the indirect ones including the preservation values, based on 4.5% of the social rate of discount.

• 어항어장
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• s.76
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• pp.30-35
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• 2006

우리나라도 1970년대부터 연안의 수산자원을 조성하기 위한 방안으로 인공어초 시설 사업과 수산종묘 사업을 실시하고 있다. 그러나 그 효과가 미미한 실정이므로 우리나라 연안자원을 적극적으로 조성하기 위해서는 바다목장 사업이 필요하다.

• Geophysics and Geophysical Exploration
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• v.27 no.1
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• pp.37-50
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• 2024

The magnetotelluric (MT) survey can be affected by external environmental factors. In particular, when acquiring MT data in islands, it is essential to consider the combined effect of topography and sea to understand the results and make accurate interpretations. To analyze the MT response (apparent resistivity, phase) with consideration of the effect of topography and sea, a small cone-shaped island model surrounded by deep sea was created. Two-dimensional (2-D) and three-dimensional (3-D) forward modeling were performed on the terrain model considering topography and the island model considering both topography and sea. The 2-D MT response did not reflect the topographic and sea effect of the direction orthogonal to the 2-D profile. The 3-D MT response included topographic and sea effects in all directions. The XY and YX components of the apparent resistivity were separated on undulating topography, such as a hill. A conductor at 1 km below sea level could be distinguished from topographic and sea effects in the MT response, and low resistivity anomaly was attenuated at greater depths. This study will facilitate understanding of field data measured on small islands.

• Korean Journal of Agricultural and Forest Meteorology
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• v.12 no.4
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• pp.217-224
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• 2010

This study was carried out to quantify potential effects of the surrounding ocean on the observed air temperature at coastal weather stations in the Korean Peninsula. Daily maximum and minimum temperature data for 2001-2009 were collected from 66 Korea Meteorological Administration (KMA) stations and the monthly averages were calculated for further analyses. Monthly data from 27 inland sites were used to generate a gridded temperature surface for the whole Peninsula based on an inverse distance weighting and the local temperature at the remaining 39 sites were estimated by recent techniques in geospatial climatology which are widely used in correction of small - scale climate controls like cold air drainage, urban heat island, topography as well as elevation. Deviations from the observed temperature were regarded as the 'apparent' sea effect and showed a quasi-logarithmic relationship with the distance of each site from the nearest coastline. Potential effects of the sea on daily temperature might exceed $6.0^{\circ}C$ cooling in summer and $6.5^{\circ}C$ warming in winter according to this relationship. We classified 25 sites within the 10 km distance from the nearest coastline into 'coastal sites' and the remaining 15 'fringe sites'. When the average deviations of the fringe sites ($0.5^{\circ}C$ for daily maximum and $1.0^{\circ}C$ for daily minimum temperature) were used as the 'noise' and subtracted from the 'apparent' sea effects of the coastal sites, maximum cooling effects of the sea were identified as $1.5^{\circ}C$ on the west coast and $3.0^{\circ}C$ on the east and the south coast in summer months. The warming effects of the sea in winter ranged from $1.0^{\circ}C$ on the west and $3.5^{\circ}C$ on the south and east coasts.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.10a
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• pp.272-273
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• 2000

수산자원의 남획, 연안오염의 증대와 간척ㆍ매립에 의한 연안어장의 축소 등의 요인에 의해 수산자원은 감소하고 있는 실정으로, 보다 종합적이고 효율적인 연안어장의 관리 방법으로 바다목장화 사업의 추진이 필요하게 되었다. 바다목장화에 의한 연안의 수산자원증강에 대한 관심이 고조되면서 방류종묘의 종류와 방류량이 증가하였으나, 방류 종묘의 품질과 방류효과에 대한 의문이 제기되면서 이와 관련하여 바다목장화에 대한 연구가 선진국을 중심으로 수행되었다. (중략)

• The Korean Journal of Quaternary Research
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• v.6 no.1
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• pp.13-19
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• 1992

To understand the natural environments and human cultures in the Yellow Sea regions, this paper deals especially the climate and sea level fluctuation in the Yellow Sea and its surrounding region in the period of late Pleistocene (125, 000 yr BP) to Holocene. During the glacial maximum (about 15, 000 yr BP to 18, 000 yr BP), the climate might be cold and arid. These arid climate in the Yellow Sea region did make desertization possible. Possible human culture exchanges between China, Korea and Japan might be carried in a easy way, because the entire basin of the Yellow Sea was exposed as land. Paleoshorelines of the Yellow Sea in the period of 10, 000 yr BP, 9, 000 ry BP and 6, 000 yr BP are presented and sea level fluctuation curve from 37, 000 yr BP (late Pleistocene) to present (late Holocene), for the first time, is presented based on a careful reconsideration of existing old data and recent new data.

• 어항어장
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• s.45
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• pp.41-46
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• 1998

• 어항어장
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• s.53
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• pp.35-41
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• 2000

• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.1
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• pp.74-80
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• 1978

To identify new herbicides for the control of Scirpus maritimus and evaluate the performance of some promising herbicides for transplanted rice, field experiments were carried out in the reclaimed paddy fields.