• 제목/요약/키워드: Geographic survey

검색결과 424건 처리시간 0.029초

지리정보시스템(GIS)을 이용한 경산시의 토지잠재력 분석 (A Land Capability Analysis in Kyungsan, Korea Using Geographic Information System)

  • 오정학;정성관
    • 한국조경학회지
    • /
    • 제26권3호
    • /
    • pp.34-44
    • /
    • 1998
  • The purpose of this study is to provide the basic data for land use in the future, which result from analyzing land use, obtained after studying on the natural environment by Geographic Information System and Remote Sensing. The results of this study are as follows : ·According to the classification of land-cover, agricultural land use is relatively prominent except for overall natural covering. According to the average value of Green Vegetation Index class, the average value of GVI is 3.0, and 45% of the regions have relatively good condition of floral state. ·With a view to natural environment, the survey shows that the altitude of 90% of the total areas is below 400m, and most of them are flattened or moderately-inclined area. Therefore, this region has a good condition to be used for development. · The area for the first class in preservation degree of natural scenery of Namcheon-Myun is 2.3% of the total areas. According to the results about unstable areas on all sides, unstable districs are distributed in so small-scale units that they will be safe from some damages drawn by developing activity. But we have to consider every aspects for the future development of them. In this study, the natural environment-variables are regarded firstly, and effective designation of the land with natural environment is researched too. However, to establish more practical developing plan, ecological and human variables should be regarded.

  • PDF

한국산 버들치속(Genus Moroco) 어류 2 종의 분류.분포 및 지리적 변이에 관하여 (Classification , Distribution and Geographic Variation of Two Species of the Genus Moroco in Korea)

  • 민미숙;양서영
    • Animal Systematics, Evolution and Diversity
    • /
    • 제2권1호
    • /
    • pp.63-78
    • /
    • 1986
  • Two species of Moroco oxycephalus and M. lagowskii were studied to examine patterns of genic variation and morphological difference within and between populations of two species, and to clarify their taxonomic status and geographic distribution. The number of scales above lateral line(SAL) was the key character to classify these species. On the average, M.lagowskii had 22 or more SAL whereas M.oxycephalus had 20 or less. Previously known character of the position of dorsal fin was found to be not appropriate to distinguish them. Five loci, Gp, st-1, Est-2, Est-3 and Got-1 , showed fixed difference electrophoretically between two species and these could be used as genetic markers to identify them. The degree of genic variation of M. oxycephalus was four fold higher(H=0.032) than that of M. lagowskii(H=0.008) but both species were far less than the average genic variation of freshwater fish in general. Rogers' genetic similarity coefficients between two species were S=0.692 and their presumed divergent time was estimated to be sbout 1.8million years ageo. Detailed survey of the geographic distribution of thses revealed that M.lagowskii was distributed in northeastern part of South Korea(Ganseong , Gangreung, Wangsan, and Oggye) and M. oxycephalus was occupied rest of the peninsula. The distrance between Oggye, the southern limit of M. lagowskii distribution , and Samwha (near Samcheog), the northern limit of M.oxycephalus, was aobut 15 Km apart and no symparty was found in between.

  • PDF

최근 디지털 측량기법을 이용한 3차원 동굴측량 (3D Cave Survey Using a New Digital Survey Technique)

  • 이강원
    • 동굴
    • /
    • 제93호
    • /
    • pp.33-41
    • /
    • 2009
  • 국내 동굴의 경우, 학술연구 및 관광사업을 목적으로 동굴에 대한 학술연구가 이루어지고 있으나, 동굴조사의 기초작업이라 할 수 있는 동굴내부의 정밀한 측량은 아직까지 이루어지지 못하였다. 동굴내부에 대해 정밀한 측량을 실시하고 지리정보시스템(GIS)을 구축하는 것은 동굴에 대한 체계적인 관리와 동굴의 변화과정을 추정하는데 효율적인 기초자료가 될 것이다. 이를 위해 최신의 디지털 측량기법들을 복합적으로 실시하는 3차원 동굴측량에 대해 소개하고자 한다.

GIS 기반 중·소규모 하천의 수문지형 물리적 구조 평가 체계 개발 (Development of the GIS-based Stream Hydromorphological Structure Assessment System for Small and Midium-size Streams)

  • 김만규;김혜주;박종철
    • 한국지리정보학회지
    • /
    • 제11권2호
    • /
    • pp.93-107
    • /
    • 2008
  • 최근 한국에서는 하천의 환경적 생태적 기능을 되살리기 위해 하천복원과 관련된 여러 가지 사업이 진행되고 있다. 이러한 하천복원사업에 있어서 사업대상 하천의 생태성에 대해 평가하고, 이를 바탕으로 하천복원사업의 목표와 계획을 수립할 수 있도록 하는 일은 학술적이나 사업적으로나 모두 값진 일이 될 것이다. 한편, 하천의 생태성을 개략적으로 판단할 수 있는 방법의 하나는, 하천의 수문지형 물리적 구조(hydromorphological structure)를 평가하는 것이다. 본 연구에서는 LAWA(물관리 연구 독일 연방 법적공동체)의 하천 평가 기법을 이용하여 중 소규모 하천의 자연 생태성을 평가하기 위한 하천의 수문지형 물리적 구조를 평가하는 현장 조사 체계(field survey system)를 개발하고, 아울러 조사결과를 이용하여 도면자동화 체계(auto mapping system) 및 보고서로 작성하는 과정을 지원하는 GIS 기반의 하천 평가 체계를 개발하였다. 하천복원 및 관리 분야 종사자들이 하천복원 계획 수립과 관리의 단계에서 대상하천의 하천자연도 내지 생태성을 인지하고 분석하는데 도움을 주고, 대상하천의 '도달해야 하는 이상적인 하천모델상'을 결정하기 위한 기초 자료를 수집하는데 도움을 주고자 한다.

  • PDF

일반측량 성과도를 활용한 수치지도의 실시간 수정갱신 체계화 연구 (A study on the realtime renewal and update of digital map using general survey)

  • 이상길;권재현;양효진;전재한
    • 한국측량학회:학술대회논문집
    • /
    • 한국측량학회 2006년도 춘계학술발표회 논문집
    • /
    • pp.393-398
    • /
    • 2006
  • Currently, 54 kinds of digital maps are provided by National Geographic Information Clearinghouse and the majority of those maps are based on aerial photographs or satellite image. The digital maps which symbolize and simplifies the topography and objects from ortho-photos does not reflect the objects 'shapes and facilities' changes. Especially, underground structures and complex building shapes are not correctly identifies by ortho-photos. Furthermore, the 1/1,000 and 1/500-1/2,500 maps for urban area produced by some local government or public organizations have detailed information with high precision, it is not easy to update the information due to the frequent changes of structures in the city. Although some efforts to solve this problem such as conducting field survey and shorten the survey period were tried, it is not the fundamental solution due to the high cost. Therefore, in this study, a realtime renewal and update of digital map using general survey are suggested. By assigning absolute coordinates to the general survey products and matching with digital maps, it is possible to update the digital map economically and rapidly. In addition, it is suggested that the construction of DB for general survey and sharing among survey companies to solve the duplicated survey.

  • PDF

GIS 및 RS를 이용한 자료 구축 및 농촌 어메니티 가치 평가 모델의 적용 (Application of Rural Amenity Values Assessment Model by Survey and Analysis using GIS and RS)

  • 배승종;정하우
    • 한국농공학회논문집
    • /
    • 제49권5호
    • /
    • pp.45-54
    • /
    • 2007
  • The purpose of this paper is to test the applicability of the rural amenity values assessment model(RAVAM) to a case study area. To verify the practical applicabilities of the RAVAM, south-east area of Kyounggi province was selected as a study area. Full data of 101 Myuns of Kyounggi province were gathered with Geographic In-formation System(GIS) and Remote Sensing(RS) techniques. All the 101 Myuns' rural amenity resources were assessed. Cluster analysis was performed on almost intact nature, interaction between nature and man, man-made amenity values to classify rural amenity characteristics. It was expected that the proposed RAVAM could be used in developing rural development plans considering local rural amenity resources' distribution.

관계형 데이터베이스와 지형정보를 이용한 농업구조물의 안전점검 및 이력관리 지원시스템 (Supporting System far Safe Appraisal and Management of Agricultural Structures using Relational Database and Geographic Information)

  • 김종옥;김한중;이정재;고만기
    • 한국농공학회지
    • /
    • 제44권3호
    • /
    • pp.101-110
    • /
    • 2002
  • Most of the agricultural structures are in shortage of feasible facility management because these structures are small in size and spacially distributed in rural area. Inspection tools based on visual inspections are generally used for agricultural structures in most of the countries, including Korea. It is necessary to survey data of the irrigation structures to maintain records, and to develop the interface program by constructing database of inspection data. This study was conducted to develop a system for safe appraisal and repair works on agricultural irrigation structures. Repair and rehabilitation method can be chosen from an optimum viewpoint if the information between the method and life-cycle management cost of agricultural structures is constructed in the database. In this study, the system assisting onsite field investigation and determining the typical rehabilitation method of typical agricultural structural problems such as fractures and cracks of members was developed.

한국인(韓國人) 빈혈빈도(貧血頻度)에 관(關)한 연구(硏究) (A Study on the Anemia Prevalence in Korea)

  • 채범석;강은주;이혜숙;한정호
    • Journal of Nutrition and Health
    • /
    • 제14권4호
    • /
    • pp.182-189
    • /
    • 1981
  • The purpose of the present study was to evaluate the nutritional status of the Korean population and its relationship with the age, sex, economic status and geographic characteristics. Taking in consideration the geographic location and socioeconomic states, ten regions out of the twenty-four regions where the Ministry of Health and Social Affairs had executed a programme (National Nutrition Survey) on evaluation of the community nutritional status were selected. Hemoglobin concentration hematocrit, and mean corpuscular hemoglobin concentration were tested from a total of 906 subjects in a month of November, 1979. The results of this study suggest that the anemia prevalences of young children in Seoul and rural areas were remarkedly decreased during last ten years, but the prevalence of low income group in provincial cities are still high and particularly in 7-l4yr. and female adult group.

  • PDF

GIS정보를 이용한 해양자료의 과학적 가시화 (Scientific Visualization of Oceanic Data)

  • 임효혁;김현성;한상천;성하근;김계영
    • 한국마린엔지니어링학회:학술대회논문집
    • /
    • 한국마린엔지니어링학회 2006년도 전기학술대회논문집
    • /
    • pp.195-196
    • /
    • 2006
  • Recently, there are increasing need to make a synthetic assessment about oceanic data which is collected over the various scientific field, in addition to just gathering oceanic data. In this study, we made a basic map using satellite image, aerial photo, multi-beam data, geological stratum data etc. And as well we are producing comprehensive SVT(Scientific Visualization Toolkit) which can visualize various kinds of oceanic data. These oceanic data include both survey data such as tidal height, tide, current, wave, water temperature, salinity, oceanic weather data and numeric modelling results such as ocean hydrodynamic model, wave model, erosion/sediment model, thermal discharged coastal water model, ocean water quality model. In this process, we introduce GIS(Geographic Information System) concepts to reflect time and spatial characteristics of oceanic data.

  • PDF

이중 주파수 에코사운더를 이용한 부니층 두께 조사 (A Survey of Floating Silt-Clay Thickness using Dual Frequency Echo Sounder)

  • 하희상;박형근;김연준;양인태
    • 한국지리정보학회지
    • /
    • 제10권4호
    • /
    • pp.14-21
    • /
    • 2007
  • 일반적으로 수심측량은 해저면의 수심을 측량하는 방법이다. 해도상에 표시되는 모든 수심은 200Khz 주파수를 사용하는 에코사운더를 사용하여 측정된다. 이 연구에서는 부니층의 두께조사를 위해 이중 주파수인 33Khz와 200Khz를 사용하였다. 준설구역상에 부니층의 물량을 조사하는 방법을 알게 되며 부니층의 유무에 대한 검증을 위해 RI 테스트가 측량 후에 수행된다.

  • PDF