• 한국콘텐츠학회논문지
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• 제14권6호
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• pp.428-441
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• 2014

한강은 한양도성 성저십리 남쪽 경계를 흐르는 승경지여서 별서지로 유명하였다. 연구는 15c 중엽 한명회가 강 남쪽에 세웠던 압구정에 관한 고찰이다. 결과는 다음과 같다. 첫째, 조선시대 압구정이 세워졌던 한강은 문화적인 풍류지역이었다. 둘째, 서호의 정자는 1454-1456년 조성된 초정, 동호의 압구정은 1469-1473년에 조성된 별서였다. 서호의 정자는 잊혀졌고 동호의 정자는 압구정동 이름에서 기억되고 있다. 셋째, 압구정 역사문화경관에는 시대별 경관의 특성과 유래가 담겨 있어 압구정동은 지명의 스토리와 함께 인식된다. 압구정이 세워졌던 한강은 현대적인 도심의 경관에도 불구하고 수경관이 아름답다. 넷째, 압구정지에는 한강을 조망하는 시각적 경관과 문헌을 통한 역사문화적 경관의 향유가 있고, 경관은 한강이 가장 중요한 경관텍스트이다. 압구정 역사문화경관은 변하지만, 서울의 중심을 흐르는 한강이 있는 한 역사문화적인 경관을 문화콘텐츠로 활용할 때 경관적 가치는 향상될 것이다. 연구를 통해 한강 수계의 역사경관 복원 시 압구정 스토리와 다양한 문화콘텐츠 활용은 함양될 수 있다.

• 한국물환경학회지
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• 제25권6호
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• pp.951-963
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• 2009

The community structure and ecological characteristics of fish community in Lake Paldang were investigated from May to September 2008. During the survey period, 53 species belonging to 13 families were collected. Dominant species was Squalidus japonicus coreanus representing 81.8% of total number and 25.7% of total biomass of collected fish and subdominant species was Lepomis macrochirus representing 3.3% of total number and 18.9% of total biomass of collected fish. There were 20 Korean endemic species (38% of collected species number) including Cottus koreanus and 4 exotic species (7.5%) including Micropterus salmoides. The similarity analysis of fish communities among water areas of Lake Paldang using UPGMA showed that fish community of North-Han River was similar to that of South-Han River area and was different from that of Gyeongan River area. Long-term variation of fish community from 1972 to present study in Lake Paldang showed decrease of the species numbers after dam construction until 1994, and gradual increase from 1996 to present study indicating the disturbance of lentic system by dam construction in the 1980s. The increase of species number in the late 2000s may results in part from the increase of survey sites of successive studies. L. macrochirus which was designated as a domestic ecosystem-disturbing alien species with wide food niche have shown more than 20% of relative abundance since 1996 indicating the adverse effect on not only fish community but also aquatic ecosystem food web of Lake Paldang.

• 한국수자원학회논문집
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• 제52권1호
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• pp.83-96
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• 2019

하천수사용 관리를 적정하게 관리하기 위해서는 객관적인 하천수사용량 자료가 수집되어야 한다. 그러나, 하천수 사용자의 취수여건을 고려하여 유량계 외에 수문조작 등의 간접적인 계측방법을 인정하고 있고, 사용자의 자발적인 보고에 의존함에 따라 자료의 객관화가 어려운 실정이다. 이에 한강홍수통제소에서는 농업용수 사용 비중이 커 하천유량 파악이 어려운 만경강의 고산~봉동 수위관측소 구간에 위치한 어우보 취수로에 V-ADCP를 이용한 계측시설을 설치 및 운영하고 있다. 본 연구에서는 V-ADCP로 측정된 유속을 이용하여 실시간 하천수사용량 산정을 위한 유속분포법의 적용성을 평가하였다. 이를 위해 Chiu의 2차원 유속분포식의 매개변수 민감도를 분석하고, 실측유량 자료에 기초한 최적 매개변수를 산정하였다. 또한 수위-유량관계법, 지표유속법과 비교 평가하여 유속분포법의 특성을 분석하였다.

• 한국물환경학회지
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• 제36권5호
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• pp.392-404
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• 2020

The focus of this study was to quantify the thermal stratification and analyze the relationship between the stratification structure and the tributaries to understand flow variations in the Paldang Reservoir. The vertical distribution of the temperature and density gradients, and the depth and thickness of the thermocline were quantitatively calculated using a lake physics tool (rLakeAnalyzer) and high-frequency monitoring data. Based on a density gradient of 0.2 kg/㎥/m, the thermocline was formed from mid-May to early-September 2019 and the other periods were weakly stratified or mixed. The thickness of the thermocline was developed until 4.7 m and the depth of the thermocline was formed at a depth of 3 - 6 m at the front of the Paldang Reservoir. During the formation of the thermocline, the Namhangang and Gyeongancheon tributaries with relatively high water temperature (low-density) flowed into the upper layer of the reservoir, and the Bukhangang tributary with low water temperature (high-density) mainly affected the lower layer of the reservoir. This is because the density currents were formed due to the difference in the water temperature of the tributaries. The findings of this study may be used for constructing high-frequency monitoring and quantitative data analyses of reservoirs.

• 한국물환경학회지
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• 제35권1호
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• pp.28-34
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• 2019

This study analyzed the occurrence pattern of Dolichospermum (= Anabaena) in the Bukhan river from March 2012 to December 2014 in order to identify the genotypes of Dolichospermum. Furthermore, 16S rRNA were analyzed to identify the genotypes of Dolichospermum that occurred in 2015 which were then compared to the reference sequence deposited at NCBI. During this period, the occurrence of Dolichospermum was highly correlated to water temperature. In the year 2012 and 2013, Dolichospermum appeared in Lake Cheongpyeong (CP), Sambong (SB), and Lake Paldang (P2) between July and August. However, in 2014, it appeared in SB and P2, but not in CP. This reduction in appearance was attributed to the decreased inflow to Lake Uiam as a result of low rainfall in 2014 as compared to 2012. In July 2015, the Dolichospermum 16S rRNA genotype was confirmed in five locations; Lake Cheongpyeong (CP), Seojong (SJ), Songchon Sewage Treatment Plant (SC), Joan (P4), and Lake Paldang (PD). Anabaena crassa of spiral clone, A. planctonica of linear clone, and A. circinalis of spiral clone exhibited high genetic similarity with the reference sequence. The 16r RNA genotype showed approximately 3 % sequence variation between the locations and were more similar to each other in locations that were closer.

• 대한지하수환경학회지
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• 제6권1호
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• pp.33-41
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• 1999

한강은 조석의 영향을 직접 받고 이로 인하여 강과 인접한 대수층은 주기적인 수위변화를 보인다. 한강수위는 팔당댐의 방류량, 각 지천에서의 유입량, 상수원인 취수장에서 양수량, 그리고 조석영향 등의 복합적인 작용으로 결정된다. 한강과 인접한 대수층의 수위변화를 파악하고 이를 이용하여 한강에 인접한 대수층 수리시스템을 분석해 보고자 하였다. 한강수위의 주기적인 변화 양상으로 수리지질학적 특성을 구할 수 있다. 조석영향으로 투수량 계수를 추정하면 9.39$\times$$10^1$~4.02$\times$$10^3$$m^2$/day의 값을 보인다. 한강수위 변화는 큰 시간적인 지연 없이 주변 대수층의 지하수위에 영향을 주는 것으로 관찰되었다. 조석에 의한 한강수위 변화에 따라 인접한 대수층 지하수의 흐름특성을 규명하기 위해 3차원 유한차분 모델인 MODFLOW를 이용하였다.

• 한국미생물·생명공학회지
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• 제20권2호
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• pp.233-235
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• 1992

The number of sulphate-reducing bacteria (SRB) in some of the tributaries to the Han River was determined by the most probable number method using Postgate's Medium E.Higher number of SRB were obtained in the streams to which industrial waste water is discharged than those receiving only domestic waste water.

• Bulletin of the Korean Chemical Society
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• 제9권1호
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• pp.5-9
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• 1988

Pattern recognition techniques have been applied for the extraction of some regularities of water samples under a wide variety of locations related to Han-River. For that purpose, an eigenvector analysis has been applied for defining each class so as to use the class as a training set for class analogy model of SIMCA. The models thus obtained have been used for the allocation of test samples between groups.

• 한국물환경학회지
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• 제34권3호
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• pp.301-307
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• 2018

This study investigated the effects of sediment removal on water quality and phytoplankton development by setting up mesocosms at Uiam Lake, South Korea, and analyzing the environmental parameters and phytoplankton communities between June and October 2015. The comparison between testbed without sediment removal (TB-1) and testbed after sediment removal (TB-2) gave similar values for water temperature, pH, dissolved oxygen (DO), and electrical conductivity. Nevertheless, the average electrical conductivities of the two testbeds were $139{\mu}S/cm$ and $135{\mu}S/cm$, which were lower than the value obtained from the external control point (TB-con; $154{\mu}S/cm$). The small difference in total phosphorus (TP) and total nitrogen (TN) concentrations between the two testbeds implied that sediment removal did not greatly reduce nutrients; however, the phytoplankton cell count had decreased by approximately 37 % in TB-2 (average 1,663 cells/mL) compared to TB-1 (average 2,625 cells/mL). Compared to TB-con, the phosphorus and nitrogen concentrations of the two testbeds had decreased by 39 % and 30 %, respectively, whereas the phytoplankton abundance had decreased by up to 73 %, perhaps because of the blocked inflow of nutrients and the stabilized body of water caused by the installation of the mesocosm. The concentration of geosmin was lower in testbeds than in the external point, because installation of the structures had reduced the cyanobacteria biomass.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.718-719
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• 2005