• 제목/요약/키워드: Ocean Contamination

검색결과 146건 처리시간 0.026초

객체지향 데이터 모델에 기반한 해양환경 분석에 따른 어장 등급 분류 (Classified Fishery Grade Using Analysis of Coastal Environmental Based on Object-Oriented Data Model)

  • 이재봉;이홍로
    • 한국지리정보학회지
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    • 제8권1호
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    • pp.40-48
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    • 2005
  • 본 논문은 공간 통계 분석에 기반한 해양오염에 대한 영향 평가를 위해 지리적 환경에 있는 오염원에 대한 지리객체와 지리필드를 규정하고, 해양 환경 영향 평가 시스템을 구현하고자 한다. 해양 영향 평가에 따른 어장의 등급 산출을 위하여 반베리오그램을 통해 공간적 상관관계의 정도를 분석하고, 크리깅 기법을 이용하여 공간자료의 등가분포도를 예측하고자 한다. 이 공간통계분석을 통한 어장의 오염 지역의 등급을 추정하고, 어장이 속한 등급에 따른 면적의 비율을 산출하고자 한다. 그래서 효율적 어장 환경의 판정을 통한 해양 영향 평가를 하는 어장 등급 산출에 기여 할 수 있다.

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임해도시 실업계 고등학교 학생의 해양환경에 대한 관심과 개선방안 (Concern and Improvement of the Ocean Environment by Vocational High School Students in a Seaside City)

  • 김삼곤;옥미경
    • 수산해양교육연구
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    • 제17권1호
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    • pp.1-17
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    • 2005
  • The purpose of this study is to prepare the way for the prevention and improvement of the ocean environment pollution and destruction by researching and analyzing the degree of interests in the ocean environment which the students of seaside vocational high schools have. The concerns of this study are as follows: 1. The vocational high school students in the seaside cities of Busan and Pohang have recognized that the ocean is the object of the highest potential of development and that through the degree of their recognition that they should better preserve the ocean environment prior to a high degree of local seaside development. 2. Although they have recognized that the ocean environment has a great influence on the life of people, their interests in the environment is low. Also, it is shown that they get their knowledge and information through TV. 3. They've understood that the main factor of ocean contamination concerns the home and the causes of ocean contamination are sewage and waste material from daily life. Moreover, their answers reveal that they believe that they should participate in a sanitization activity for the ocean environment voluntarily and put trash into nearby trash cans as opposed to inconsiderately throwing away trash on the beach. 4. Their answers also show that they recognize the elements that can best preserve the ocean environment start at home and with government, and school services through experience activities are the most effective for the education of the ocean environment.

우리나라의 환경문제 우선순위 도출 - 환경전문가를 중심으로 - (The Priority of Environmental Problems in Korea)

  • 신동천;임영욱;박종연;장은아;김진용;박성은;조성준
    • Environmental Analysis Health and Toxicology
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    • 제14권4호
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    • pp.165-174
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    • 1999
  • This study was conducted to analyze the priority of environmental problems in Korea by investigating the environmental professionals' perception. The delphi technique was applied to identify their risk perception towards some specific items related with pollution. A standardized questionnaire on environmental problems and their priorities was used to 74 subjects. In the questionnaire, the environmental problems were divided into the general ones,9 items, and the specific ones,30 items. Also, the perception was associated with two points of view which were the risk on general human health or ecosystem, and on the present situation in Korea. The priority of risk from general environmental problems on human health or ecosystem was analyzed in the order of 'water pollution', 'air pollution', 'soil contamination', 'waste', 'toxic chemical pollutants', 'food contamination', 'ocean contamination', 'odor pollution', and 'noise pollution'. The priority of risk on the present situation in Korea was analyzed in the order of 'water pollution','air pollution','waste','toxic chemical pollutants','food contamination','soil contamination','ocean contamination','odor pollution', and 'noise pollution'. And these priorities were significantly related with the characteristics of respondents such as sex, age, and major concerned area. However, for the first five priorities of risk from the specific environmental problems on human health or ecosystem, the environmental professionals agreed with 'automotive vehicle exhaust', 'domestic and industrial source pollutants to surface water', '$CO_2$nd g1oba1 warming effect','toxic air pollutant' and 'industrial source air pollution'. The priorities of risk on the present situation in Korea were similar to these results.

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전기방식시 적용되는 희생양극의 성능개발에 대한 연구 (A Study on the Sacrificial Anode for Imparting High Capabilities to Cathodic Protection)

  • 김성종
    • 수산해양기술연구
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    • 제34권1호
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    • pp.37-42
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    • 1998
  • Al alloy anode is mostly used for protecting marine structures such as pier steel piles and ship's body. Recently it has been reported that the life of Al alloy anode has been shortened significantly than the original design life. It is suggested that the suspected reasons for this problem mentioned above seems to be the improper protection design of alloy of anode on sea water regardless of environmental facotrs such as flow rate, temperature, contamination degree etc. However there is few paper about to the sea water contamination degree affecting to the life of Al alloy anode. In this study, the property of Al alloy anode was investigated as a parameter of sea water contamination degree such as variation of pH 2, 4, 6, 8, 10 and each sea port's contaminated waters.

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우리나라 하수 및 폐수 처리 슬러지의 유기인계 살충제의 함량 (Contemporary Organic Contamination Levels in Digested Sewage Sludge from Treatment Plants in Korea : (3) Organophosphorus Insecticides)

  • 홍기훈;이강영;정창수;이현경
    • 한국환경과학회지
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    • 제15권3호
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    • pp.229-236
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    • 2006
  • Organophosphorus pesticides (OPPs) contents in the sewage sludge derived from the residential and industrial areas were determined in order to characterize contemporary organic contamination levels as a part of the ongoing development of the environmentally sound sewage sludge management strategy in Korea. OPPs were extracted from freeze-dried sludges in a ultrasonic extractor. The extracts were cleaned-up by florisil column and subsequently fed into gas chromatograph/nitrogen phosphorus detector (GC/NPD) for determining OPP contents. Diazinon, dimethoate, disulfoton, EPN, malathion, methyl parathion, parathion, phorate and sulfotep were present in the appreciable amount in the domestic sewage sludges. The sum of the 9 OPPs in the sewage sludge varied from 534.8 to 15552.1 ${\mu}g/kg$, dry wt..

태안해안국립공원 연안으로 유입되는 하계-추계 육상오염원의 오염도 평가(2017~2018) (Evaluation of the contamination Level of Inland Pollution Sources Flowing into Taeanhaean National Park in Summer and Fall (2017-2018))

  • 황다혜;김진현;장성건;정원옥;정병관
    • 한국환경과학회지
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    • 제31권6호
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    • pp.491-501
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    • 2022
  • This study evaluated the contamination levels of inland pollution sources flowing into Taeanhaean National Park. The nutritional status of influents was assessed by analyzing water quality and trophic status index (TRIX) at 52 stations, and the contamination levels of sediments were evaluated by analyzing eutrophication cleanup index (CIET) and heavy metals at 36 stations. The results of the TRIX analysis showed that 26 of the 52 stations had influents with a TRIX value of 6-10 (poor water quality/very high trophic level), indicating atrocious water quality and high eutrophication levels. The results of the CIET analysis showed that 4 out of the 36 stations were highly contaminated with organic matter. Analysis of heavy metals showed that the copper (Cu) and zinc (Zn) levels exceeded the threshold effects level (TEL) and probable effects levels (PEL) at several stations. In addition, the arsenic (As) level exceeded the threshold effects level at one station, and the levels of the other heavy metals (Cd, Cr6+, Ni, Pb, and Hg) were lower. Most inland pollution sources have been identified as small-scale, but long-term and continuous exposure can negatively affect the marine ecosystem; therefore, it necessary to prepare inland pollution source management standards and measures suitable for the characteristics of the coastal area.