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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Association of Geographic Information Studies
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Journal DOI :
The Korean Association of Geographic Information Studies
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Volume & Issues
Volume 8, Issue 4 - Dec 2005
Volume 8, Issue 3 - Sep 2005
Volume 8, Issue 2 - Jun 2005
Volume 8, Issue 1 - Mar 2005
Selecting the target year
Fractal Analysis of Urban Morphology Considering Distributed Situation of Buildings
Moon, Tae-Heon ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 1~10
The purpose of this paper is to conduct an experimental measurement and analysis of cities' morphology. Fractal theory that is an effective tool for evaluating self-similarity and complexity of objects was applied. For the comparative analysis of fractailities and computational verification, two totally different cities in Japan were selected. They are Kitakyushu City, which is a big and fully developed city, and Jinguu Machi of which almost all the area is covered with agricultural land use. After converting vector data to raster data within GIS, fractal dimensions of two cases in Kitakyushu City and one case in Jinguu Machi were calculated. The calculation showed that two parts of Kitakyushu City were already fractal. Jinguu Machi, however, was difficult to find fractality. As a conclusion, fractal was proved to be an useful tool to estimate the shape of cities reflecting their internal spatial structure, that is self-similarity and complexity.
Utilization of Space based Digital Information for Land Information around the Acreage of a Lot
Jung, Dae-Young ; Shin, Young-Chul ; Jung, Young-June ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 11~22
It is necessary to arrange and analyze the collected research date to get regularity such as characteristics, merits and demerits, and possibility in city when constructing land information by analyzing linkage and utilization of cadastral information as the fundamental data for land information around the acreage of a lot and by expressing the purpose of each digital data construction with map. In short, that is the work to classify data, to make chart or map, or to analyze using statistical technique. Some information in land utilization had been used by computerization, but several problems were found in common use of total divisions. The most important problem is, in the case of drawing information, that topographical map with building boundary and land registration map with acreage boundary cannot be used together. In the case of property information, common utilization of property information that is basically needed and standard measurement of usage classification are necessary. The characteristics of the land usage data by the rearrangement of the cadastral information. etc. is presented as the basic data for the land information orientation, and the analyzing result of the data should be expressed and controlled on the map as the fundamental survey for the establishment of the land information oriented planning supports the physical space planning of the land cadaster finally. In this research, the problem in establishing current land information around acreage of a lot was found to research data to be needed in land information for utilizationof space based digital information, and was studied the method in relation to GIS.
Determination of Grid Size to Extract Hydrologic -Topographical Parameters
Jeong, In-Ju ; Seo, Kyu-Woo ; Kim, Ga-Ya ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 23~33
Hydrologic-topographical parameters were extracted using GIS. The use of GIS is more effective and exact than the execution by person. And the purpose of this paper is to extract more efficient size of grid for DEM analysis by applying GIS technology. As a result, when the grid size is less than
the trend of extracted parameters is similar but when the grid size is over
the trend of extraction parameters is dispersive. Therefore, it is appropriate to extract hydrologic-topographical parameters the grid size of
in DEM analysis.
Monitoring Spatiotemporal Changes of Tidal Flats in Go-Gunsan Islands by Environmental Factors using Satellite Images
Lee, Hong-Ro ; Lee, Jae-Bong ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 34~43
We will catch the spatio-temporal changes that analyse the unknown topography of Go-Gunsan Islands using Landsat TM satellite images into an unsupervised ISODATA classification and a supervised nearest likelihood classification. Each sedimental topography has the different characteristics according to building the Saemangeum embarkment. We will deal with the distribution of sedimental shapes using ERDAS Imagine 8. 6. The result that classifies specifically topographic properties of our research area be considered to get use of establishing the reclaiming program and predicating the reclaimed sedimental topography. The research area can be classified into tidal flats and sea level using band 4 among 7 bands of Landsat TM. Also band 5 can be used to classify the special unknown shapes of tidal flats. We will clarify the efficiency that spatio-temporal sedimental changes can be extracted through processing satellite images. Therefore, the spatio-temporal unknown topography change monitoring using satellite images is expected to be very useful to clarify whether the tidal flat is generated or not in the Go-Gunsan Islands at the outer side of the embarkment after constructing completely the Saemangeum tidal embarkment.
A Study on the Application and Requirements of Socioeconomic GIS Data
Nam, Kwang-Woo ; Kim, Ho-Yong ; Lee, Sung-Ho ; Lee, Sang-Hak ; Ha, Su-Wook ; Choi, Hyun ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 44~54
Most advanced countries in GIS field have established and managed georeferenced socioeconomic data systematically and made a great profit on various social and economic areas. In Korea, however, socioeconomic geographical information is relatively poor compared to systems related to geographical and topographical features. This is mainly due to the characteristics of the process from the construction to the utilization of socioeconomic data. That is, from the stage of data construction, socioeconomic data require solutions for frequent changes compared to data on geographical and topographical features and, because of difficulties in marking the positions of individual entities, information is built up through setting appropriate spatial units of aggregation. In the stage of data utilization, the data often need to be combined with other types of socioeconomic data due to the complexity of socioeconomic phenomena. Thus, the this study examined usability of GIS in socioeconomic fields and the spatial dimension of socioeconomic information through representative cases of GIS in developed countries and, based on the results, derived data requirements for socioeconomic GIS found in the construction and utilization of data and proposed solutions for the requirements.
Extracting Information on Road Slope Monitoring by Digital Photogrammetric Processing Techniques
Lee, Jin-Duk ; Yeon, Sang-Ho ; Lee, Ho-Chan ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 55~64
This study demonstrates the experiment based on digital photogrammetric processing for acquiring data related to slope monitoring. To apply dose-range digital photos for monitoring road rock slopes, digital elevation models and digital orthophotos were generated and 3D modelling was conducted for the visualization on a digital photogrammetric workstation. These digital photogrammetric products can be utilized as objective and scientific data not only for surveying and analyzing the shape and characteristics of the slopes but also for extracting various engineering data for building the database of the slopes and making the safety diagnosis of the slopes.
The Estimation of GIS-based Monthly Soil Erosion with Rainfall Weighting Value
Lee, Geun-Sang ; Park, Jin-Hyeog ; Chae, Hyo-Sok ; Koh, Deuk-Koo ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 65~73
Because the geological features of Imha basin are composed of clay and shale layer, much soil particle flows into reservoir in shape of muddy water when it rains a lot. Therefore, turbidity data can be indirect-index to estimate the soil erosion of Imha basin. This study evaluated annual soil erosion using GIS-based soil erosion model and applied rainfall weighting value method by time-series rainfall data to estimate monthly soil erosion. In view of 2003 turbidity data, monthly soil erosion with rainfall weighting value is more efficient than monthly soil erosion with rainfall data.
Analysis of Landscape Structure Change for Riparian Buffer Zone KyangAn Watershed
Kim, Kyung-Tak ; Kim, Joo-Hun ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 74~83
The Riparian Buffer Zone has many potential values including the preservation of water quality as well as being ecologically friendly. This study aims to quantitatively analyze the landscape structure index of the Riparian Buffer Zone in the Kyoung-an stream and to produce base information necessary for proper management. The study used aerial images that were applied to geometric corrections for a time series from 1966 to 2000 for land data and also used FRAGSTATS, which is a type of ARCVIEW extension module, as an analysis tool. An analysis of land use change and the Landscape Index revealed that the area of farm land has decreased and that the area of residential property has increased. In addition, there was a slight change for land used for purposes other than farming or for residence. The results of analyzing the Landscape Structure Index, revealed that the NP has increased from 437 in 1966 to 695 in 2000. This data reveals that the change of land use is influenced by various artificial factors. The NPS, which represents the declining degree of patch, decreased from 9.441 to 5.934, revealing that the change of land use has been progressing considerably. In regard to forest areas, land use reduced somewhat but did not indicate a significant change. Therefore, an analysis of the total index reveals that the edge of patch has become more complicated and that the variation index of patch has increased significantly. However, this study reveals that barriers to block pollution have weakened as a result and that there is a need to concentrate on the implementation and the management of the Riparian Buffer Zone. Consequently, this study reveals that substantial research is necessary in order to carry out the proper management of the Riparian Buffer Zone, especially in light of the distribution type of each patch and the change in conditions regarding them.
Solution Approaches to Multiple Viewpoint Problems: Comparative Analysis using Topographic Features
Kim, Young-Hoon ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 84~95
This paper presents solution heuristics to solving optimal multiple-viewpoint location problems that are based on topographic features. The visibility problem is to maximise the viewshed area for a set of viewpoints on digital elevation models (DEM). For this analysis, five areas are selected, and fundamental topographic features (peak, pass, and pit) are extracted from the DEMs of the study areas. To solve the visibility problem, at first, solution approaches based on the characteristics of the topographic features are explored, and then, a benchmark test is undertaken that solution performances of the solution methods, such as computing times, and visible area sizes, are compared with the performances of traditional spatial heuristics. The feasibility of the solution methods, then, are discussed with the benchmark test results. From the analysis, this paper can conclude that fundamental topographic features based solution methods suggest a new sight of visibility analysis approach which did not discuss in traditional algorithmic approaches. Finally, further research avenues are suggested such as exploring more sophisticated selection process of topographic features related to visibility analysis, exploiting systematic methods to extract topographic features, and robust spatial analytical techniques and optimization techniques that enable to use the topographic features effectively.
Assessment of the Inundation Area and Volume of Tonle Sap Lake using Remote Sensing and GIS
Chae, Hyosok ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 96~106
The ability of remote sensing and GIS technique, which used to provide valuable informations in the time and space domain, has been known to be very useful in providing permanent records by mapping and monitoring flooded area. In 2000, floods were at the worst stage of devastation in Tonle Sap Lake, Mekong River Basin, for the second time in records during July and October. In this study, Landsat ETM+ and RADARSAT imagery were used to obtain the basic information on computation of the inundation area and volume using ISODATA classifier and segmentation technique. However, the extracted inundatton area showed only a small fraction than the actually inundated area because of clouds in the imagery and complex ground conditions. To overcome these limitations, the cost-distance method of GIS was used to estimate the inundated area at the peak level by integrating the inundated area from satellite imagery in corporation with digital elevation model (DEM). The estimated inundation area was simply converted with the inundation volume using GIS. The inundation volume was compared with the volume based on hydraulic modeling with MIKE 11. which is the most poppular among the dynamic river modeling system. The method is suitable for estimating inundation volume even when Landsat ETM+ has many clouds in the imagery.
Development of Algorithms for the Construction of Hydrogeologic Thematic Maps using Avenue
Language in ArcView GIS
Kim, Gyoo-Bum ; Son, Young-Chul ; Kim, Jong-Wook ; Lee, Jang-Yong ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 107~120
In Korea, MOCT and KOWACO published a standard for lineament map drawings, "The Handbook for the Drawing and Management of Hydrogeologic Map" in 2003. According to this guideline, hydrogeologic and related thematic maps should include characteristics of groundwater quality and quantity. These maps are generally drawn with ArcView GIS 3.x software. The activities of well notation on groundwater level map and Stiff diagram drawings on groundwater quality map require a great deal of efforts because hundreds or thousands of well data, water level data and hydrogeochemical data are produced through many kinds of investigations. As well, lineament density map is very important to survey and explore groundwater in a deep aquifer. In this study we developed some modules for well notation, Stiff diagram drawings, and lineament density value calculation with Avenue
script and it was revealed that they can be very useful and easy for drawing groundwater thematic maps.
Developing of Slope Calculation Algorithm using Cell-based Modeling
An, Sang-Hyun ; Kang, Yong-Seok ; Shin, Young-Chul ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 121~128
Forest fire is expanded to large-scale forest fire based on topographic characteristics, particularly slope. This report addresses the currently available methods of calculation slope angle from a digital elevation model and develops a new method that circumvents a number of the shortcomings associated with other algorithms. The results of the comparison of five different slope angle calculation algorithms show that maximum uphill slope angle calculation is the proper method for the purpose of predicting forest fire hazard.
A Study on GPS-Van Application for Editing and Updating Digital Map of Road System
Joo, Young-Eun ; Lee, Hyung-Seok ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 129~141
It is difficult to edit large-scale digital maps because of problems of cost and process and it is carried out by aerial photogrammetry in renewal periods. Five years of update period cannot provide exact data required in the fast-moving age. This study is to analyze applicability and impact for editing digital map of road system using the GPS-Van. Results are compared with accuracy of the data acquisition with GPS-Van positioning. INS data are affected by the barrier to receive GPS data. But high accuracy were achieved by thorough plans according to work order. By using GPS Van and fieldwork at the same time for editing and renewal of digital map, it is expected that this method can be used to reduce costs in the economic and temporal aspects, and provide rapid and accurate digital map of road system.
Development on Real Time Application System for Fisheries Oceanography Information
Lee, Chu ; Suh, Young-Sang ; Hwang, Jae-Dong ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 142~149
To provide observed oceanography data at coastal fish and shellfish farm in the northeastern sea of the Korean peninsula on real time base, we developed real time application system for fisheries oceanography information. The system has been made up a mooring buoy system, a server for oceanography data collection, a server for archiving data and a database system, and a web server for providing fisheries oceanography information using internet. Futhermore, to support letters service on a cellular phone, we developed the communication system from mooring buoy to cell phone on real time base. The oceanography data derived from the system are water temperature speed and direction of current in surface layer middle layer and bottom layer in hour. We were able to quantify short term variation of ocean conditions within several days at shellfish farm such as a scallop sea farm using our system. To reduce damages of fish and shellfish farm from abnormal phenomena of ocean conditions such as a broken stratification of water, an occurrence of abnormal coastal cold water and warm water we will be able to move vertically and horizontally the sea farm facilities to proper conditions using real time oceanography information derive from the system.
Estimation of the Temporal and Spatial Variation of Surface Temperature Distribution in the Korean Peninsula using NOAA/AVHRR Data
Suh, Young-Sang ; Lee, Gi-Chul ; Lee, Na-Kyung ; Jo, Myung-Hee ;
Journal of the Korean Association of Geographic Information Studies, volume 8, issue 3, 2005, Pages 150~160
In this study, the spatiotemporal surface temperature changes were analyzed in the Korean peninsula. The surface temperature variation was estimated using the split window method and NOAA/AVHRR data in 1991, 1995 and 2000. The ranges of differences in temperature between day time and night time were
around the peninsula. The differences in seasonal variations and yearly fluctuations in big cities were lower than those in rural areas and showed clearly the effects of the urbanization. The characteristics of urban heat affects were further determined based on the day and night time temperature comparison on Busan metropolitan area between these periods. Finally, the future use of this technology was suggested for the urban environmental planning.