• 한국전자통신학회논문지
• /
• 제10권5호
• /
• pp.629-636
• /
• 2015

본 논문는 인공어초 조성의 가장 기본적인 요소인 적지선정을 위한 방법에 대해 고찰하였다. 현장관측과 위성 원격탐사(Remote Sensing, RS)로 획득한 자료를 지리정보시스템(Geographic Information System, GIS)을 활용하여 분석하였다. 한반도 주변해역의 해양환경 특성을 파악하기 위해 물리적 조건-해저저질, 수심, 생물적 조건-클로로필-${\alpha}$, 화학적 조건-해수온, DO를 활용하였다. 인공어초 적지로는 태안반도, 거제, 완도, 포항, 서천 등이 나타났다. 향후 본 연구는 인공어초 설치의 효율적인 활용뿐만 아니라 종합적인 데이터베이스의 구축에 도움을 줄 수 있을 것이다. 또한 인공어초 시설관리의 기초자료로 활용할 수 있을 것으로 기대된다.

• 한국지역지리학회지
• /
• 제11권1호
• /
• pp.114-122
• /
• 2005

태안반도 신두 해안사구지대의 중앙부에서 고사구층으로 판단되는 퇴적물의 퇴적시기를 파악하기 위해 OSL 연대측정을 실시하였다. 조사 지점 최하부에서의 사구사 퇴적은 대략 680$\sim$730년 전으로, 1.5m 깊이에서는 480$\sim$610년 전으로 나타났다. 반면 1.3m부근의 암갈색 퇴적층을 사이에 두고 1.2m 깊이 퇴적층에서의 산출연대는 123$\sim$151년 전으로, 최상부 퇴적물의 연대는 약 68년인 것으로 나타났다. 한편, 사구 표면으로부터 1.5m와 3m 깊이에서 채취한 두개의 시료는 200년 정도의 연대 차이가 있다. 이에 의하면 사구사의 집적율은 연간 약 0.75cm로 나타났다. 본 조사에서 연대를 추정한 사구사 퇴적층은 1개 지점에 불과하지만, 이를 토대로 볼 때, 지난 1,000년간 상당한 양의 사구사가 퇴적되었거나 재이동되었고, 적어도 한번의 토양화과정이 진행되었음을 알 수 있다. 이러한 사실은 지금까지 플라이스토세나 홀로세 초기로 알려진 고사구층의 형성 연대에 대한 연구가 다시 시도되어야 함을 시사한다.

• 한국수산과학회지
• /
• 제47권3호
• /
• pp.264-273
• /
• 2014

To investigate species composition and seasonal variation of demersal organisms in the coastal waters off the Taean peninsula, otter trawl surveys were conducted from April 2010 to January 2011. A total of 75 species were collected, including 44 species of Pisces, 19 species of Crustacea, 6 species of Cephalopoda, 4 species of Gastropoda, and 1 species each of Bivalvia and Echinoidea. The dominant species in each season were Palaemon gravieri in spring, Charybdis bimaculata in summer, Loligo japonica in autumn, and Crangon hakodatei in winter. The number of species, individuals and biomass were highest in autumn and lowest in winter. The diversity index was highest in summer and lowest in winter. The dominance index was highest in winter and lowest in summer. The richness index was highest in autumn and lowest in winter. The evenness index was highest in summer and lowest in autumn. A cluster analysis showed that demersal organisms were divided into two groups; spring and winter organisms (Group 1) and summer and autumn organisms (Group 2). We detected a significant difference (P<0.05) between these groups, mainly owing to Platycephalus indicus, Repomucenus koreanus, and Paralichthys olivaceus within Pisces: Trachysalambria curvirostris, Metapenaeopsis dalei, P. gravieri, and C. hakodatei within Crustacea: and L. japonica within Cephalopoda.

• 한국수산과학회지
• /
• 제50권1호
• /
• pp.55-64
• /
• 2017

Seasonal variability in algal community structure was examined at the intertidal zones of five study sites on the Taean Peninsula, on the western coast of Korea, from February 2014 to November 2015. A total of 118 species of marine algae, comprising 17 green, 24 brown and 77 red algae, were identified. The maximum number of species was observed at the Mohang site (75 species), and the minimum at the Yeonpo site (46 species). The seaweed biomass was $160.24g\;dry\;wt./m^2$ on average, and was maximal at Uihang ($519.04g\;dry\;wt./m^2$) and minimal at Yeonpo ($19.03g\;dry\;wt./m^2$). Based on biomass, the dominant seaweeds at Taean peninsula were Sargassum thunbergii and Corallina pilulifera. Community indices were as follows: richness index (R), 3.21-5.01; evenness index (J'), 0.33-0.38; and diversity index (H'), 0.90-1.12. Based on evaluation of the environmental states by the community indices, the ecological evaluation index (EEI) of Taean peninsula was "moderate". The overall species and biomass of seaweeds decreased after the oil spill. However, Hakampo previously showed a similar algal community structure. In conclusion, the algal community was temporarily affected by the oil spill, but rapidly recovered.

• 대한지리학회지
• /
• 제38권4호
• /
• pp.505-517
• /
• 2003

본 연구는 우리나라의 서해안에서 해안사구의 발달이 탁월한 충청남도를 선정하여 해안사구의 구성물질이 어디에서 기원하는가를 구명하는 것을 목적으로 하였다. 기존의 문헌을 검토하고 예비조사를 거쳐 중점연구지역을 선정한 다음에 각종 자료를 분석하여 지역연구의 바탕으로 삼았다. 우리나라의 서해안은 수심이 얕아서 조차가 크기 때문에 조류의 작용이 활발한 것이 특징이다. 그러나 태안반도, 안면도와 같이 육지가 바다로 돌출한 지방에서는 파랑의 작용도 활발하여 비치가 나타나고 그 배후에는 해안사구가 발달하였다. 해안사구의 구성물질은 거의 대부분 석영과 장석으로 이루어졌으며 운모, 중광물도 섞여 있다. 사구사는 화강암기원의 것을 제외하면 입도가 아주 작고 원마도가 불량한 것이 특징이다. 이는 모래의 이동거리가 길지 않았음을 의미한다. 해안사구는 고조시에 파랑의 영향을 받아 후퇴한다. 해안사구의 트렌치에서는 플라이스토세층으로 생각되는 적색의 모래층이 관찰되는데, 이 모래층은 빙기의 산물이라고 판단된다.

• 한국수산과학회지
• /
• 제47권6호
• /
• pp.1014-1025
• /
• 2014

We measured the concentrations of various geochemical parameters [grain size, ignition loss (IL), chemical oxygen demand (COD), acid volatile sulfide (AVS), and trace metals (Fe, Cu, Cd, Pb, Cr, Mn, As, Zn, and Hg)] in the surface sediments of two intertidal oyster Crassostrea gigas farming areas (Iwon and Mongsan tidal flats) on the Taean Peninsula, Korea, to evaluate the pollution level of organic matter and trace metals in sediment. The intertidal sediments in the study region comprise mostly sand with a mean grain size of 2.5-3.5 Ø. The concentrations of IL, COD, AVS, and trace metals in the sediment of two study regions were either similar or lower in oyster farming areas relative to non-farming areas, apparently due to biological uptake or physical and biological sediment reworking. Based on the results for the pollution evaluation of organic matter and trace metals derived from sediment quality guidelines, enrichment factor, and geoaccumulation index, our results suggest that the sediment in these two intertidal oyster farming regions is not polluted by organic matter and trace metals.

• 한국패류학회지
• /
• 제27권1호
• /
• pp.77-86
• /
• 2011

The unwanted artificial oil-spill has severely contaminated the coastal environment in the world. Level of contamination has so far been monitered by various indicator species including mussel, oysters, flounder, and cockle. In this study, we decided to use the oyster as a model organism to observe the morphological changes being exposed to the artificial oil-spill in the coastal areas in Taean, Korea. The oysters were collected from four local sites (Sindu-ri, Uiwang-ri, Jonghyeon-dong, Ansan and Uihang-ri) exposed to various levels of pollution after an oil spill in Taean. Microscopic analysis of the hepatopancreatic microstructure in the digestive gland from the collected oysters show that the swelling, whorl, and destruction phenomenon of the nuclear membrane, a well-known microstructure induced by heavy metal exposure, was observed. Nuclear body (Nb), another typical characteristic of contamination or infection were also observed in some samples. Necrosis was observed in tissue samples collected from the area with a high degree of oil pollution. In addition, parasite-like particles (virus, perkinsus) were observed in most samples. Taken together, these results suggest that oil contamination in the oyster habitats influences the cytopathological changes in Crassostrea gigas.

• 한국수산과학회지
• /
• 제40권4호
• /
• pp.210-219
• /
• 2007

The benthic marine algal flora and community structure were examined at five sites of the Taean Peninsula, Korea, during July-August 2005. Ninety-six algal species were Identified, including 14 green, 21 brown, and 60 red algae, and 1 marine plant. The common species that occurred at the five sites were Sargassum thunbergii, Gelidium divaricatum, Caulacanthus okamurae, Gracilavia vermiculophylla, and Neorhodomela aculeata. Sthunbergii was the dominant species in terms of coverage and biomass at ail of the study sites. The average biomass varied from $23.72g/m^2$ in dry weight at Chaeseokpo to $66.43g/m^2$ at Padori. The species could be divided into six functional groups in terms of morphological characteristics: 41 coarsely branched forms, 25 filamentous forms, 16 sheet forms, 7 thick leathery forms, including the marine plant Phyllospadix iwatensis, 4 crustose forms, and 3 Jointed calcareous forms. The seaweed communities at the five study sites were unstable and the environmental conditions were bad or very bad. Among the five study sites, the ecological evaluation index (EEI) and diversity index (H') were maximal at Padori at 2.29 and 1.98, respectively. By contrast, the dominance index (DI) was minimal at Padori (0.55) and maximal at Baramarae (0.96). Therefore, we conclude that the rocky shore at Padori has the best environment among the five study sites, although the species richness and biomass of seaweeds have declined continuously over the last 10 years.

• 한국지역지리학회지
• /
• 제10권3호
• /
• pp.667-681
• /
• 2004

이 연구의 목적은 태안반도 신두해안사구의 유효풍속과 지형변화의 관계를 밝히는 것이다. 퇴적물의 유동은 8개의 횡단면에서 침식핀을 이용하여 1999년 7월부터 2000년 7월까지 고도변화를 측정한 후 계산되었다. 연구결과가 시사하는 바는 다음과 같다. 첫째, 사구지역에서의 지형변화와 유효풍속에 근거하여 퇴적기와 침식기가 구분되었다. 퇴적기는 11월부터 4월까지로 모래의 집적이 주로 전사구에서 일어났으며 순차적으로 사구평지로 이어졌다. 침식기는 5월부터 10일까지로 전사구의 말단부에서 소규모 침식과 퇴적이 반복되는 패턴을 보였다. 둘째. 조사기간 동안 조사지역에서의 전체 퇴적물수지는 $10.2\;m^3$/m/yr로 잉여로 나타났으나 지역적인 차이가 나타났다. 이차사구에서는 결핍되는 곳도 나타났다. 사구지역의 북단에서는 모래의 공급이 활발하게 이루어지고 있는 반면 중앙부와 남부지역에서는 모래의 공급이 빈약했다.

• 한국지형학회지
• /
• 제23권1호
• /
• pp.117-128
• /
• 2016

High resolution aerial photographs and digital elevation models for Bangpo beach using UAV were generated in this study to analyze the thematic and geometric characteristics of coastal features. Based on 728 aerial images acquired on September 10, 2016 by the UAV, a image mosaic at 2.2 cm spatial resolution and a digital elevation model at 4.4 cm spatial resolution were developed. This study found out that Bangpo beach consisted of intertidal zone and supratidal zone. The intertidal zone can be subdivided into lower part and upper part with distinctive geomorphological characteristics. While the lower part included sand bars and ripple marks along the coastline, the cusps and sand dunes were the major coastal features of the upper part. Part of the intertidal zone was occupied by shore platform with average slope of 0.9 degree containing various sizes of gravels. The supratidal zone slanted toward ocean with berms on the surface with an interval of 15 m. These coastal features indicated the flow intensity towards to the land and tidal effect. It validated that the UAV application in coastal research was very effective analyzing to examine coastal processes.