• Title/Summary/Keyword: Spatial Information Inventory

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A GIS Technique to Evaluate Landslide Activity (산사태 활동성분석을 위한 GIS 응용연구)

  • 김윤종;유일현;김원영;이사로;신은선;송무영
    • Spatial Information Research
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    • v.4 no.1
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    • pp.83-92
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    • 1996
  • The inventory maps of landslide deposits show where landsliding has occured in the past., and serve as a general guide to slope stability. Isopleth maps derived from those inventory maps, provide an economi¬cal means for the recognition of landslide activity and assessing the degree of landslide hazard in a large area, es¬pecially rural areas. GIS could generalize the methods of hazard assessment by means of isopleth mapping of landslide deposits. Isopleth maps of Secheon and Boreong areas, where the degree of landslide hazard is very high, show the mitigation of landslide activities remarkably by the remedial efforts during the period of 1978-1991.

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Mapping Landslide Susceptibility Based on Spatial Prediction Modeling Approach and Quality Assessment (공간예측모형에 기반한 산사태 취약성 지도 작성과 품질 평가)

  • Al, Mamun;Park, Hyun-Su;JANG, Dong-Ho
    • Journal of The Geomorphological Association of Korea
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    • v.26 no.3
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    • pp.53-67
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    • 2019
  • The purpose of this study is to identify the quality of landslide susceptibility in a landslide-prone area (Jinbu-myeon, Gangwon-do, South Korea) by spatial prediction modeling approach and compare the results obtained. For this goal, a landslide inventory map was prepared mainly based on past historical information and aerial photographs analysis (Daum Map, 2008), as well as some field observation. Altogether, 550 landslides were counted at the whole study area. Among them, 182 landslides are debris flow and each group of landslides was constructed in the inventory map separately. Then, the landslide inventory was randomly selected through Excel; 50% landslide was used for model analysis and the remaining 50% was used for validation purpose. Total 12 contributing factors, such as slope, aspect, curvature, topographic wetness index (TWI), elevation, forest type, forest timber diameter, forest crown density, geology, landuse, soil depth, and soil drainage were used in the analysis. Moreover, to find out the co-relation between landslide causative factors and incidents landslide, pixels were divided into several classes and frequency ratio for individual class was extracted. Eventually, six landslide susceptibility maps were constructed using the Bayesian Predictive Discriminant (BPD), Empirical Likelihood Ratio (ELR), and Linear Regression Method (LRM) models based on different category dada. Finally, in the cross validation process, landslide susceptibility map was plotted with a receiver operating characteristic (ROC) curve and calculated the area under the curve (AUC) and tried to extract success rate curve. The result showed that Bayesian, likelihood and linear models were of 85.52%, 85.23%, and 83.49% accuracy respectively for total data. Subsequently, in the category of debris flow landslide, results are little better compare with total data and its contained 86.33%, 85.53% and 84.17% accuracy. It means all three models were reasonable methods for landslide susceptibility analysis. The models have proved to produce reliable predictions for regional spatial planning or land-use planning.

Study on Developing Program for Efficient Landscape Woody Plants Management - Mainly Focused on the Development of a Tree Inventory System - (조경수목의 효율적 관리를 위한 프로그램 개발에 관한 연구 - 관리대장(Tree Inventory) 개발을 중심으로 -)

  • 조영환;곽행구
    • Journal of the Korean Institute of Landscape Architecture
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    • v.24 no.4
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    • pp.1-22
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    • 1997
  • This paper was focused on the efficient management of landscape woody plants, and concerned itself with their important role in the urban environment. Based on the philosophy that there is nothing that can be done without an inventory, the purpose of this study was to develop an inventory system and iris proper application to a site for establishing a management plan Two different approaches were used, The first was to make a newly structured inventory system through collecting, analyzing, and evaluating various types of inventories used in Korea, the U. S. A., and Japan. The second approach was to apply a newly designed inventory system to the case study area. using GIS 'as a tool of spacial analysis and statistics for making decisions. The results could be summarized as follows; 1. In Korea, most of the Landscape Woozy Plants Inventories had datas which represented possession of trees, and only the work which they had done according to their traditional ways, There was no data related to the conditions, management needs, and site conditions of individual trees, This is essential information for organizing an inventory system . 2. There needs to be data which is balanced, containing tree characteristics and site characteristics. Through such information the management needs could be adjusted properly. The inventory list described in this paper was determined by botanical identity, placement condition, condition of tree, and types of work for maintaining as well as improving the condition of each tree One of the most important things was to determine the location data of each tree so as to compare data with other trees. The data gained from the field survey still had some problems because of lack of scientific method for supporting objective views, and because of actual situations, especially in the field of evaluating site conditions and management needs. All data should be revised to fit a computer data management system , if possible 3. The GIS(Geographic Information System) application showed good performance in handling inventory data for decision making. All the data used for the GIS application was divided into location and non-spatial data. Using the location data, it was easy to find the exact location of each tree on the monitor and on the maps generated by the computer even in the actual managed trite, along with various attribute data. Therefore it could be said that the entire management plan should start from data of individual trees with their exact locations, for making concrete management goals through actual budget planning.

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A Development Plan for Integrated Inventory Management System to Support Decision Making for Disaster Response (재난대응 의사결정 지원을 위한 인벤토리 통합 관리 시스템 구축 방안)

  • Choi, Soo-Young;Gang, Su-Myung;Kim, Jin-Man;Oh, Eun-Ho;Jo, Myung-Hee
    • Journal of the Korean Association of Geographic Information Studies
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    • v.17 no.4
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    • pp.179-188
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    • 2014
  • Social overhead capital (SOC) facilities are being threatened continuously by abnormal climate events that are increasing globally. For disaster response, rapid decision making on evacuation routes and other matters is critical. For this purpose, spatiotemporal information that combine data on disasters and SOC facilities needs to be utilized. This information is separately collected by government agencies and public organizations, and is not managed in an integrated manner. For rapid disaster response, an integrated management of separately collected disaster data and the creation of such information as the safety and damages on SOC facilities are required. To achieve this goal, it is essential to build inventories that integrate all the related information to support decision making indispensable for disaster response. In this study, a development plan for an integrated inventory management system based on the management and connection of inventories to support rapid decision making for disaster response is proposed. This system can collect and standardize data related to disasters and SOC facilities that are being managed separately and provide integrated information in line with the needs of users. The proposed system can be used as a decision making tool for proactive disaster response.

A Study on the Research Trend and Future Development Direction of Mt. Baekdu in Korea (국내 백두산 분화 관련 연구 동향 분석 및 향후 발전방향 제시)

  • Park, Sung-Hwan;Lee, MoungJin;Lee, Jun-Hee;Lee, Jong-Ho;Jung, Hyung-Sub
    • Journal of Environmental Policy
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    • v.14 no.2
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    • pp.149-170
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    • 2015
  • The purpose of this paper is to figure out the research direction and information regarding Mt. Baekdu in Korea through analyses of the research field and trends. Firstly, we made inventory of journal papers, conference proceedings, and research reports published related to Mt. Baekdu. A total of 255 data, spanning the 34 years from the 1980s to the middle of 2014, were acquired and classified into categories according to the year, field, contents and study area. Results show that research on Mt. Baekdu has been performed more than twice since 2010 and study regarding prediction has been carried out in 54.7% cases. In addition, the importance of geo-spatial information is expected to increase in order to study Mt. Baekdu. Secondly, we made and analyzed a geospatial information using inventory of 234 detailed research contents in research reports by Korea Meteorological Administration (KMA) and National Institute of Meteorological Research (NIMR). Statistics on categories show that research regarding prediction accounted for 81.6% of cases and the study of geo-spatial information utilization accounted for 54.7% of cases. However, the focus on studying the Mt. Baekdu region accounted for only 20.1% of cases. Thus, this indicates that it is necessary to do research at Mt. Bakdu itself. If the directly available geo-spatial information system is developed related to Mt. Baekdu, it will save research costs and analysis time. This study can be used to manage information about the research field of Mt. Baekdu by analysing inventory of research references and geospatial information using inventories when the Mt. Baekdu area is the focus of future research.

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The Improvement for Geo-spatial Information Utilization of Environment Impact Assessment Supporting System (환경영향평가 정보지원시스템의 지형공간정보 서비스의 활용성 개선)

  • Chang, Hoon;Jeon, Hyung Jin
    • Journal of Korean Society for Geospatial Information Science
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    • v.21 no.1
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    • pp.45-52
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    • 2013
  • EIASS(Environment Impact Assessment Supporting System) provided the various updated quality environment impact assessment data and the assessment reports through database system to support cost effective and stable services. Through this system users can access environment impact assessment information and have great convenience in their relevant works. This study introduces geo-spatial information usages in EIASS and how this system developed the use of convenience and expansion of service ranges by user surveys. This study also demonstrated step-wise delivery and links on one-stop database inventory for data collection, manipulation, and usages of geo-spatial information among environmental information.

Conceptual Design of Damage Assessment Inventory in Response to Disaster Risk for Infrastructures Close to River (수변구조물 재해 위험에 대응하기 위한 피해 평가 인벤토리 개념 설계)

  • Jo, Yun-Won;Choi, Hyeoung-Wook;Choi, Soo-Young;Jo, Myung-Hee
    • Journal of the Korean Association of Geographic Information Studies
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    • v.17 no.1
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    • pp.144-158
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    • 2014
  • This research presented a conceptual design of damage assessment inventory for efficient response to natural disaster damage of infrastructure close to the river. It consists of classification and categorization of facilities for accomplishing the conceptual design of inventory for damage of infrastructure close to the river. However, there are arising problems of efficient management on disaster, such as poor management of data facilities and constructions which is managed by the different types of government departments. Therefore, this research presented conceptual models of damage assessment inventory on risks of damage infrastructure close to the river using the United states' HAZUS-MH to analyze damage facilities, type of asset classification, classification of domestic facilities and guidelines for computing the value of assets. Conceptual models of inventory this research presented is to be used on the data for damage response on protected inland damage assessment and to increase efficiency for evaluating detailed damage amount of private property by natural disaster and to establish a restoration plan.

Modeling Community Capacity Building Using Spatial Asset Mapping (공간자산매핑을 이용한 지역사회 능력배양의 모델링에 관한 연구)

  • Liou, Jaeik
    • Journal of the Korean Association of Geographic Information Studies
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    • v.7 no.4
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    • pp.98-108
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    • 2004
  • The concept of community capacity is regarded as the ability of people and communities to do works associated with the determinant factors and indicators of the circumstances of socio-economic, environmental and physical contexts. Building capacity of communities to effectively analyze our problematic issues and planning of community development is often required to scrutinize current status of community of socio-economic and infrastructural capacity development with GIS. We consider community development as a planned effort to build assets that increase the capacity of communities. Spatial asset mapping is the process enabling to identify and make inventories of tangible and intangible assets. This mapping requires developing a capacity inventory that collects individual organizational and community capacities in view of human, socio-cultural, natural, financial, digital, and physical capacity. The purpose of this research is not only designed to suggest a new concept capacity building, but also proposes a more creative framework of asset-based community cap linking to parcel-based spatial asset mapping and capacity mapping process.

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A Study on Installing Air Pollution Emission Systems in Seoul Using GIS and GPS (GIS와 GPS를 이용한 서울시 대기측정시스템 설치방안에 관한 연구)

  • Lee, Bong-Gyou
    • Journal of Korean Society for Geospatial Information Science
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    • v.6 no.1 s.11
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    • pp.53-63
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    • 1998
  • The purpose of this study is to investigate the current status of automatic measuring systems for air pollution emissions in Seoul and to suggest an improvement method using GIS and GPS. In Korea, there have been very few critical researches and managements for mobile and area sources regarding moving subjects such as automobiles. In order to control or to make a plan for reducing air pollutions, air pollution emission data based on tim and location, emission inventory systems and emission models should be implemented. Using digital maps and MS Visual Basic, we developed a visualized interface for air pollution emission data from automatic emission measurement systems in Seoul.

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Application of GIS to Typhoon Risk Assessment (지리정보시스템을 이용한 태풍 위험 평가)

  • Lee, Sung-Su;Chang, Eun-Mi
    • Spatial Information Research
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    • v.17 no.2
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    • pp.243-249
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    • 2009
  • Damages from typhoon events have contributed more than 60 percent of total economic and social loss and the size of loss have been increased up to 800 million dollars per year in Korea, It is therefore necessary to make an effort to mitigate the loss of natural disasters. To facilitate the evaluation of damages in advance and to support the decision making to recover the damages, scientific methods have been adopted. With the effort, GIS data can provide various tools. Three components of hazard mapping are estimation of hazard, inventory for vulnerable features, and fragility of each feature. Vulnerability of natural disaster can be obtained by relation between loss and meteorological data such as precipitation and wind speed. Features can be categorized from other GIS data of public facilities and private properties, and then social and economic loss can be estimated. At this point, GIS data conversions for each model are required. In this study, we build a method to estimate typhoon risk based on GIS data such as DEM, land cover and land use map, facilities.

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