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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
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 6, Issue 4 - Dec 2003
Volume 6, Issue 3 - Sep 2003
Volume 6, Issue 2 - Jun 2003
Volume 6, Issue 1 - Mar 2003
Selecting the target year
Estimation of the Sea Surface Radiation from GMS-5 Visible Data
Park, Kyung-Won ; Kwon, Byung-Hyuk ; Kim, Young-Sup ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 1~9
Surface solar radiation over the sea is estimated using the visible and infrared spin scan radiometer (VISSR) data onboard Geostationary Meteorological Satellite(GMS)-5 from January 1997 to December 1997 in clear and cloudy conditions. The hourly insolation is estimated with a spatial resolution of
grid. The island pyranometer operated by the Japan Meteorological Agency(JMA) is used to validate the estimated insolation. The root mean square error of the hourly estimated insolation is
with 0.91 of the correlation coefficient. In the variability of the hourly solar radiation investigated around the Korean Peninsula, the maximum value of solar radiation is found in June at the Yellow Sea and the East Sea, while in August at the South Sea because of low pressure conditions and front in June.
Resource Evaluation for Environment-friendly Regional Planning in Bonghwa-gun
Hwang, Kook-Woong ; Eom, Boong-Hoon ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 10~21
Resource evaluation for environment-friendly regional planning using GIS was implemented in Bonghwa-gun, Gyeongsangbuk-do And new paradigms such as 'green tourism', 'eco-tourism', 'eco-village', were considered and applied into resource indicator system. The weighted evaluation was carried out into pixel units and the scores of every 'myeon' were compared with each others. As a result, the area that has the 'Dak-sil-ma-eul' village in Bonghwa-eup got the highest score. When compared every 'myeon' in mean scores, Bonghwa-eup got the first grade, Socheon-myeon the second grade and Choonyang-myeon the third grade. In a comprehensive view, the areas that got higher scores were the lower flat areas and the 'Dak-sil-ma-eul' village in Bonghwa-eup, north-east areas in Choonyang-myeon, north-west areas and south-east areas in Socheon-myeon. In this study, resource evaluation using indicator system and GIS was implemented, and some problems that appeared in this process were resolved.
Analysis of Soil Erosion Hazard Zone using GIS
Kim, Joo-Hun ; Kim, Kyung-Tak ; Yeon, Gyu-Bang ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 22~32
The purpose of this study is to analyze soil erosion quantity of a basin by using DEM, soil map and landuse map and to find a soil erosion hazard zone in a basin based on this data. In this study, RUSLE was used to analyze soil loss quantity and the research area chosen is Mushim stream which branches off the Geum river. This study used a mean annual precipitation of Cheongju Meteorological Observation was used as a hydrological data and DEM, the detailed soil map(1/25,000), the landuse map collected respectively from Ministry of Environment, National Institute of Agricultural Science and Technology and Ministry of Construction and Transportation. The subject map was drawn to analyze soil erosion hazard zone by using the above data and maps. According to the results of the analysis, a lot of soil loss shows in a bare area. In case of a forest, a slope has a lot of influence on soil loss. The integration and analysis of the above gave the result that
corresponding to 8.5% of the places of which the slope is over 20 degree in a bare area was found to have a higher chance of soil erosion.
An Implementation of Flood Simulation in the Saemangeum Water Resources Management System using an Object-oriented Geographic Information System
Lee, Hong-Lo ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 33~45
This paper defines the prototype of the geographic-object field that links the geographic-object and the geographic-field using an object-oriented geographic information system, and then implements the flood simulation in the saemangeum water resources management system that manipulates the water quantity of saemangeum lake and the height of gate using the watershed-object field. This paper combines the natural phenomena with the artificial phenomena that occurs on the water resources of the saemangeum, and designs the object oriented class hierarchy that is composed of the total watershed-object field, and then presents the algorithm for flood control. To visualize the class hierarchy of the whole geographic-object field and the partial geographic-object field, I use the UML(Unified Modeling Language). Attributes and methods of each class can acquire the functional reusability and compatibility using the COM of the ZEUS and the Visual Basic 6.0 of Win32 APIs. By means of implementing the flood simulation in the Saemangeum water resources management system, finally, this paper contributes on the efficient management of water resources.
Practical Investigation for Internet Airborne Video Map Focused on Vector Shaped Objects
Um, Jung-Sup ; Lee, Bo-Mi ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 46~64
The vector shaped object is generally very long (hundreds or thousands of kilometers) and very narrow (10-100 meters). Image mapping techniques and tools for these objects should be totally different from the traditional area-based targets. Acknowledging these unique characteristics of the vector shaped object, a motion picture mapping system has been developed by combining internet GIS technology with airborne video. In particular, integration between airborne video and digital maps took advantage of each component, and enabled the landscape structure to be visualized, interacted with and deployed all on the Web. The motion picture maps provided a completely new means for disseminating information for area-wide landscape in a visual and interactive manner to the general public while digital map with location information revealed successfully the major parameters that influence an area-wide spatial structure in the study area. The remote video approach breaks down the usual concept of image mapping in a conventional cartography. As a result, the research findings have established the new concept of 'internet airborne video mapping for vector shaped object', proposed as an initial aim of this paper. It would playa crucial role in improving the quality of public information service if the mapping system is operationally introduced into the Government since the highly user-friendly moving picture provides a completely new means for disseminating spatia) information for vector shaped object.
Development of the GIS Based Pre- and Post-Processing Tool for the Visual MODFLOW Groundwater Flow Modeling
Kim, Man-Kyu ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 65~79
In this study GIS based pre- and post-processing tool for the Visual MODFLOW that is specific software to model groundwater flow is developed. This tool not only makes input data scientifically but also manages input and output data in terms of the groundwater flow analysis. In addition it can storage project products systematically into Oracle database. The most characteristic figure of this processing tool is to provide the module, which automatically or semi automatically develops various grid cell sizes using GIS ArcView and also produces DXF files reflecting various boundary conditions in the modeling zone. In particular, eminences of this research are to create 3 dimensional hydrogeological structures with 2 dimensional GIS ArcView and to conduct pre- and post- processing along with same topology and data format of the MODFLOW.
A Study on the Landcover Classification using Band Ratioing Data of Landsat-TM
Kwon, Bong-Kyum ; Yamada, Kiyoshi ; Niren, Takaaki ; Jo, Myung-Hee ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 80~91
In this research, re-using band ratio data was proposed and examined as a method of raising the accuracy in landcover classification which is using satellite data.In order to determine the band which is used to calculation in the classified item, the six bands except the band 6 were combined with the band in which combination is possible and the landcover classification by MLC of supervised classification was carried out. In the result of landcover classification which is combined with forty nine combination, Two bands which were mostly used by band combination in the accuracy belonged inside the 10th place of a higher rank were selected and also calculated. landcover classification were performed again after the calculation result had been recombinated from the research. In addition, the new landcover classification result was compared and examined with the landcover classification using the old data. From the result of which was compared and examined the new landcover classification data recombinated calculation result with landcover classification using the original data, The classification accuracy of the new landcover classification data recombinated calculation result became low in ground but became improved in the all class. Specially The accuracy to urban area is very improved. therefore, it determined that reusing band ratio data is very useful when we need to analyze landcover classification and land information to urban area after that.
A Study on Change of NDVI According to the Terrain Element
Sung, Chun-Ja ; Jung, Jong-Chul ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 92~100
Analysis and results of the relationship between the NDVI and terrain element such as elevation, slope, aspect in Chunahn city area are as follows. It does not show the linear relationship between NDVI and analyzed terrain element such as elevation, slope, aspect, etc. and there is a trend such that the deviation of NDVI is decreased as the elevation and slope is increased. It appears that there is trends such that the distribution range of NDVI is discontinuously changed as the elevation and slope is increased. The distribution range of NDVI is discontinuously decreased based on about 50m and 100m borderline in elevation case, and slope
borderline in slope case, respectively. Any special trend is discovered in the relationship between aspect and NDVI.
Implementation of Management System for Contamination Vulnerability Calibration of the Ground Water by an Object-oriented Geographic Data Model
Lee, Hong-Ro ;
Journal of the Korean Association of Geographic Information Studies, volume 6, issue 2, 2003, Pages 101~112
This paper designs and implements the management system that can calibrate the contamination vulnerability of the ground water, using an object oriented data model. Geographic-objects are specified by features extracted from an applicable geographic domain, and geographic-fields are defined by chemical factors extracted from each driven water. To show the topological relationships among the geographic-objects and the geographic-fields, this paper attach the weight and the ratio of the drastic model to chemical factors represented on the land use digital map and the ground water digital map. The geographic feature class, administrative boundary class, land use class and driven water class consist of a class composition hierarchy for evaluating the convenient contamination vulnerability calibration with spatial relationships among the well objects. Therefore, this management system for evaluating the contamination vulnerability can also contribute to the application of other natural environments.