• 해양환경안전학회:학술대회논문집
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• 해양환경안전학회 2005년도 추계학술대회지
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• pp.139-141
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• 2005

인공어초의 기능을 복원하기 위하여 어초시설과 함께 어초어장의 사후관리는 중요하다. 전남 여수지역 6,142ha에 시설된 인공어초어장에 대하여 양방향음향탐사기(Side Scan Sonar) 및 잠수조사를 실시하고 어초의 시설상태, 생물상, 폐그물량을 조사하였다. 또한 보다 낳은 인공어초 사후관리 방법을 알아보고자 하였다.

• 수산해양기술연구
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• 제47권2호
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• pp.118-127
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• 2011

This study was investigated seasonal variation and species composition of fish species at artificial reefs (octangle three-stage compartment type and dice type)and natural rock in the Shinyang-Ri coastal waters off Jeju Island with visual census method in January 2009, April 2009, July 2009, September 2009, December 2009, March 2010, June 2010, and September 2010. A total of 44 fish species was occurred, and the dominant fish species were Apogon semilineatus, Chromis notata, Trachurus japonicus, Sebastes thompsoni and Apogon doederleini. The number of individuals of fishes was higher at April 2009 and March 2010, however, lower at June 2010 and September 2010. The number of fish speices was higher at artificial reefs than those of at natural rock. Apogon semilineatus was dominant at octangle three-stage compartment type and the dice type artificial reefs, whereas Chromis notata was for natural rock. These results indicated that artificial reefs were good habitats for a variety of fish species in the Shinyang-Ri coastal waters off Jeju Island.

• 한국산학기술학회논문지
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• 제15권1호
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• pp.555-560
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• 2014

우리나라 연안생태계는 백화현상(갯녹음)에 의한 해조류의 감소와 어패류 등 어업자원의 감소로 인해 연안역의 황폐화에 직면해 있다 새로운 인공어초의 새로운 유형의 안정성을 평가하기 위해 본 연구에서는 2차원 단면수조를 이용하여 새롭게 개발된 인공어초의 설치수심에 따른 재현파고, 주기, 흐름 등 외력을 변화시켜 해조류 이식형 어초의 안정 조건이 되는 한계치를 구하고, 설계외력(파랑, 흐름 등)의 안정성에 대한 검토를 수행하였다. 본 연구 결과는 새로운 인공어초의 설계 및 실해역에 시공하기 위해 구조물의 안정성을 사전에 검토할 수 있는 있는 기초자료를 제공할 수 있을 것으로 판단된다.

• 수산해양교육연구
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• 제25권6호
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• pp.1336-1347
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• 2013

The marine algal flora assemblages settled on the artificial seaweed reefs in Jeju-do before and after rocky cleaning were investigated during summer and the early succession of seaweeds attached to the test panels on the structures of the artificial reef after rocky cleaning were observed by visual observations and under the dissecting microscope in order to evaluate the effects of this rocky cleaning operation. Species composition and algal biomass on the Bboolsamgak-typed seaweed artificial reefs before and after rocky cleaning were measured and compared before and after rocky cleaning. Before rocky cleaning in July 2012, only nine algal species had existed on the Bboolsamgak-typed seaweed artificial reefs, however, twenty algal species occurred on the seaweed artificial reefs after rocky cleaning in July 2013. Particularly, 15 species among them in July 2013 were not found in July 2012 and they seemed to occur newly on the artificial reefs. A large quantity of algal biomass increased in July 2013 after rocky cleaning. Based on the importance value, there was a drastic change in the dominant species between July 2012 and July 2013 after rocky cleaning. By dissecting micrographs, an epiphytic diatom, Licmophora sp. and flagellates, were observed on the 9th day. A chlorophyte, Ulothrix flacca was observed after 14 days, Ulva pertusa, Bryopsis pulmosa, crustose coralline algae, and Cladophora spp. were after one month. After two months, a significant species succession was observed from three previous chlorophyte species to crustose coralline algae existed as a dominant species on the panels. In this study, however, any brown algae were not found until three months in the early seaweed succession. All above results indicates that the rocky cleaning is a very efficient method for the establishment of macroalgal assemblages on the artificial reefs.

• 한국수산과학회지
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• 제46권3호
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• pp.266-272
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• 2013

The objective of this study was to monitor and evaluate the schooling characteristics, including the distribution density (volume backscattering strength) and acoustic size (target strength), of commercially valuable species swimming in response to artificial reefs installed at Suyeong Man, Busan, Korea. Fish aggregations at two artificial reef areas and at a nearby natural rocky reef habitat were recorded and analyzed using a 70 kHz split-beam echo sounder and 330 kHz side-scan sonar from August to September, 2006. An underwater CCTV camera system was also used to observe marine organisms in physical contact with and swimming very close to artificial reefs. During the acoustic observations at three reef sites, useful information about schooling characteristics of fish aggregations responding to artificial reefs were obtained, but more trials are needed to confirm significant differences in schooling behavior and geographical distributions in areas containing natural reef structures and artificial reefs.

• 한국콘텐츠학회논문지
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• 제5권5호
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• pp.238-247
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• 2005

IT 관련 기술의 발전은 'Any Time, Any Where, Any Service'를 사용자에게 제공할 수 있는 제반 여건을 마련하였으며, 무선 인터넷 서비스는 인터넷 기반의 서비스를 이동 중에도 이용 가능하도록 하였다. 다양한 무선 콘텐츠 개발로 생활에 다양한 즐거움과 편리함을 제공하였다. 그러나 기존 무선 콘텐츠는 표준화된 환경에서 구축되지 않아 무선 인터넷 플랫폼에 종속적이었다. 따라서 콘텐츠 중복 개발로 인한 자원 낭비, 시간 낭비, 인력 낭비를 초래하고 있다. 본 논문은 JAVA를 이용하여 플랫폼에 독립적이며, WIPI기반 인공어초 검색 콘텐츠를 제안한다. 인공어초시설은 어민 소득 증대의 목적으로 국가가 시행하고 있는 사업이지만, 인공어초시설 위치 정보는 일부 어민들만 알고, 많은 어민들은 인공어초시설 위치조차 모르고 있는 실정이다. 따라서 본 논문은 WIPI 기반 인공어초 검색 콘텐츠를 개발하여 인공어초시설 위치 정보를 모르는 어민들과 조사들에게 인공어초시설 위치정보, 수심, 저질 등의 정보를 제공함으로써 어민들에게는 소득 증대를, 조사들에게는 대어를 낚을 수 있는 기회를 제공하고자 한다.

• 수산해양교육연구
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• 제28권4호
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• pp.1042-1056
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• 2016

To evaluate the wake regions of six artificial reefs (ARs) frequently used in the marine forest creation project in Korea, we consider the effect of water flow directions on the wake regions and accordingly propose a wake region diagram, which is characterized by parameters such as wake volume fluctuations, averaged wake volume, fundamental symmetric angle, secure angle, and principal direction. To demonstrate the parameters, seven water flow directions (0 to $90^{\circ}$) were considered and consequently the variations in wake volumes were investigated by using the concept of wake volume, adopting element-based finite volume method, and utilizing numerical flow domain and boundary conditions. From the analysis results, it was shown that the wake region diagrams have a period of either 45 or $90^{\circ}$ according to the geometrical symmetry of each artificial reef. Also, it was found that the secure angle ranges fluctuate depending on the shapes and sizes of the artificial reefs considered. Thus, it is demanded to consider those parameters during installation of artificial reefs for establishing a larger wake region and accordingly attracting more marine fauna and flora in the region.

• Journal of Advanced Marine Engineering and Technology
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• 제32권2호
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• pp.359-364
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• 2008

Using multi beam echo sounder, side scan sonar and scuba diving equipment, ceramic type, uneven type and semicircle-ramus type reefs into sandy bottom were ascertained, the depth of submersion in 7.2-10.3m on the coast of Gangneung, East of Korea, forty uneven type artificial reefs(AR) were totally buried into the sandy bottom. Two of five semicircle-ramus type ARs had only of their top area exposed. For most of the 45 ceramic reefs, only the upper 25-150cm of ARs were visible. The burial pattern is different in west and east side of the reefs, where the east side is deeply buried compared to the west side. From these results. it is recommended that sufficient analysis of bottom structure and materials especially in the sandy sea area should be undertaken in order to determine the best type of artificial reefs to be deployed and the best location for depoloyment.

• 수산해양기술연구
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• 제43권2호
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• pp.126-139
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• 2007

In the autumn of 2000 and spring of 2001, field surveys were conducted to estimate the effectiveness of artificial reefs (type cube, $2{\times}2{\times}2m^3$) that were established in the four islands of Bangnyeong, Socheong, Daeyeonpyeong and Ganghwa in Kyonggi Bay, the west coast of Korea during 1995 and 1996. The condition of reefs was examined through SCUBA diving and a side-scan sonar. Much of the reefs in Daeyeonpyeong and Ganghwa area were buried in bottom sediment. Despite an intensive search in Bangnyeong area, even a cluster of reefs was not found and most of them seemed to be buried by sand waves. Thus an appropriate investigation on the sediment transport should be included in pre-assessment for the expected performance and protection of artificial reefs. Distribution of average CPUE in natural fishing ground (control) was estimated by bootstrapping simulation and possible comparison of CPUE between control and reef areas (treatment) were made in Bangnyeong and Socheong (Experiment I). Positive reef effect was detected in Socheong but CPUE of treatment in Bangnyeong was varied between or lower than the 99% CPUE confidence intervals of the control. Control/treatment abundance and biomass of fishes and invertebrates were tested by paired t-test and sign test (Experiment II). Only four cases among 22 showed significant positive effect. Based on the results, the cube artificial reef in Socheong was inferred as an affirmative one. Floor type was hypothesized to be one of the probable agents in determining the effectiveness of artificial reefs.

• 수산해양기술연구
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• 제46권2호
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• pp.139-147
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• 2010

This study monitored a variety of marine fish communities in artificial reefs unit of the total 5 types (Dice type, Octagonal turtle type, Two-stage tube type, Gazebo type, Tetrapod type) which are located in the marine ranching at Jeju island by scuba diving in May, July, October and December 2009. Underwater photographing was accomplished at total 3 phases (condition of artificial reefs photographing, concentric circle movement photographing and line transect photographing). The preservation condition of artificial reefs facility was very good, and the dominant species were Chromis notatus, Sebastes thompsoni, Oplegnathus fasciatus and Halichoeres poecilopterus. Fish abundance was high in May and June, and low in October and December, 2009. Chromis notatus was dominant at the all types of artificial reefs, Halichoeres poecilopterus for Gazebo type and Tetrapod type of artificial reefs, and Sebastes thompsoni for Dice type, Octagonal turtle type and Two-stage tube type of artificial reefs.