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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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The Korean Association of Geographic Information Studies
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Volume & Issues
Volume 14, Issue 4 - Dec 2011
Volume 14, Issue 3 - Sep 2011
Volume 14, Issue 2 - Jun 2011
Volume 14, Issue 1 - Mar 2011
Selecting the target year
Development of the Program for Operating & Managing Digital Forest Cover Type Map Using SDE(Revision 1.0)
You, Byung-Oh ; Seo, Su-An ; Ryu, Joo-Hyung ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 1~10
DOI : 10.11108/kagis.2011.14.3.001
This program was developed to operate and manage the massive digital forest cover type map using SDE(spatial database engine) in order to solve the problems of the analogue mapping system, mapping process and managing vast amounts of data. It was established the standardization process by performing the several functions of application related to the spatial DB search, mapping history and progress control, modification and inspection of the topology error, approval and reject of those maps. It can be possible to generate the effective mapping and distribute maps to the public service. It is expected that the results will be able to reduce time-cost.
Constructing Database and Social Experiment of Scenic Byway Using the Multi-Transportation of Korea and Japan
Hwang, In-Sik ; Baek, Tae-Kyung ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 11~21
DOI : 10.11108/kagis.2011.14.3.011
This study intends to construct scenic byway database and to examine and suggest social experiment of scenic byway. As basis work for the experiment of the scenic byway, we build database by using ITS standard node link management system. The DB includes scenic byway routes of Korea and Japan. The analyses show that the scenic byway in both nations consists of roads, reservation, road sign, vehicle number plate, and it was found that infrastructure and system are inadequate for scenic byway. These experiment can be effectively used for scenic byway in Korea and Japan as the basis data. The results of this experiment will be useful for plan and develop a scenic byway.
A Plan of Spatial Data Modeling for Tidal Power Energy Development
Oh, Jung-Hee ; Choi, Hyun-Woo ; Park, Jin-Soon ; Lee, Kwang-Soo ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 22~35
DOI : 10.11108/kagis.2011.14.3.022
Incheon Bay has a suitable condition for tidal power generation due to the high tidal range by topographical effect. Therefore a study on the technology development for tidal energy utilization has been promoted since 2006. It is needed to deduce optimal alternatives to determine the suitable location of facilities for tidal power generation and to reduce the environmental damage from development. In order to carry out efficiently this mission, spatial information system is essential to manage and use various spacial elements related to the development and conservation. In this study, for the development of tidal energy, spatial data could be defined as three kinds of dataset. Fundamental dataset is defined as spatial data such as tide, tidal current, wave, erosion and sedimentation. Framework dataset is composed of topographical map, facility map and bathymetry. The reference dataset is composed of marine ecology and environment having the characteristics of thematic map. This study is mainly aimed at establishing methodology of conceptual spatial data modeling classifying as essential data model and optional data model through the definition of the components of spatial data.
Coupled Model Development between Groundwater Recharge Quantity and Climate Change Using GIS
Lee, Moung-Jin ; Lee, Joung-Ho ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 36~51
DOI : 10.11108/kagis.2011.14.3.036
Global climate change is disturbing the water circulation balance by changing rates of precipitation, recharge and discharge, and evapotranspiration. Groundwater, which occupies a considerable portion of the world's water resources, is related to climate change via surface water such as rivers, lakes, and marshes. In this study, the authors selected a relevant climate change scenario, A1B from the Special Report on Emission Scenario (SRES) which is distributed at Korea Meteorological Administration. By using data on temperature, rainfall, soil, and land use, the groundwater recharge rate for the research area was estimated by periodically and embodied as geographic information system (GIS). In order to calculate the groundwater recharge quantity, Visual HELP3 was used as main model, and the physical properties of weather, temperature, and soil layers were used as main input data. General changes to water circulation due to climate change have already been predicted. In order to systematically solve problems of ground circulation system, it may be urgent to recalculate the groundwater recharge quantity and consequent change under future climate change. The space-time calculation of changes of the groundwater recharge quantity in the study area may serve as a foundation to present additional measures to improve domestic groundwater resource management.
Identification of Usable Geographic Information for Pilot of Forest Fire Suppression Helicopter and Its Acquisition from Public Data
Ryu, Young-Ki ; Kim, Man-Kyu ; Park, Jong-Chul ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 52~67
DOI : 10.11108/kagis.2011.14.3.052
The research investigates the identification of necessary geographic information needed by forest fire suppression helicopter pilots, and the ways to acquire the required information from public institutions. Firefighting helicopter pilots demand 7 physical geographic and 13 human geographic data. Applying the geographical information acquired from Korean public institutions, the following 15 characteristics (3 physical geographic, 12 human geographic) can be found: altitude and highlands, river, high population and urban areas, roads, national park and state boundaries, fuel re-supply facilities, freshwater areas, cultural assets, (LPG)gas charging stations, gas stations, ammunition storage areas, ground power cables, and steel towers. Within the database of physical geography, there is a need for improvement on bird habitat details. Also, the availability of visibility, wind directions, and wind velocity data is limited and therefore requires refining. The location of refueling areas can be obtained by applying information received from institutions to the GIS spatial analysis.
Regional Safety Assesment Due to Urban Flood Using GIS
Yeo, Chang-Geon ; Seo, Geun-Soon ; Song, Jae-Woo ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 68~77
DOI : 10.11108/kagis.2011.14.3.068
Flood disasters on the metropolis where population and facilities were densely concentrated cause an enormous damage, therefore it is important to find risk and vulnerable area for floods, and then mid-long term disaster reduction plan should be established by the results. However, there is no rational method which reflects urban characteristics to estimate the regional safety for flood. so it is necessary to develop the standardized method of regional safety assesment due to urban flood. The proposed regional safety assesment model in this study was combined risk and mitigation score which consisted of three and two element, and 12 assesment factors which effect flood disasters were selected. And then the integrated regional safety was estimated by subtracting mitigation score from risk score. GIS tool was used to estimate the factor assesment and integrated regional safety. Developed regional safety assesment model was applied in Seoul to evaluate the suitability.
The Utilization of DEM Made by Digital Map in Height Evaluation of Buildings in a Flying Safety Area
Park, Jong-Chul ; Kim, Man-Kyu ; Jung, Woong-Sun ; Han, Gyu-Cheol ; Ryu, Young-Ki ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 78~95
DOI : 10.11108/kagis.2011.14.3.078
This study has developed various DEMs with different spatial resolutions using many different interpolation methods with the aid of a 1:5,000 digital map. In addition, this study has evaluated the vertical accuracy of various DEMs constructed by check point data obtained from the network RTK GPS survey. The obtained results suggest that a DEM developed from the TIN-based Terrain method performs well in evaluating height restriction of buildings in a flying safety area considering general RMSE values, land-type RMSE values and profile evaluation results, etc. And, it has been found that three meters is the right spatial resolution for a DEM in evaluating height restriction of buildings in a flying safety area. Meanwhile, elevation values obtained by the DEM are not point estimation values but interval estimation values. This can be used to check whether the height of buildings in the vicinity of an airfield violates height limitation values of the area. To check whether the height of buildings measured in interval estimation values violates height limitation values of the area, this study has adopted three steps: 1) high probability of violation, 2) low probability of violation, 3) inconclusiveness about the violation. The obtained results will provide an important basis for developing a GIS related to the evaluation of height restriction of buildings in the vicinity of an airfield. Furthermore, although results are limited to the study area, the vertical accuracy values of the DEM constructed from a two-dimensional digital map may provide useful information to researchers who try to use DEMs.
A Case Study for Augmented Reality Based Geography Learning Contents
Lee, Seok-Jun ; Ko, In-Chul ; Jung, Soon-Ki ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 96~109
DOI : 10.11108/kagis.2011.14.3.096
Recently, the geographic information system(GIS) is generally used in various fields with the development of information and communication technology, with expansion of its applications and utilization scope. Especially, utilizing GIS is expected to have positive effects on the geography learning and more helpful for the geographic information observation compared to the picture or 2D based media. The effective visualization of complex geographic data does not only take realization of its visual information but also increases the human ability in analysis and understanding to use the geographic information. In this paper, we examine a method to develop the geography learning contents based on the technology with augmented reality and GIS, and then we have a case study for various kinds of visualization techniques and examples to use in geography learning situation. Moreover, we introduce an example of the manufacturing process from the existing GIS data to augmented reality based geography learning system. From the above, we show that the usefulness of our method is applicable for effective visualization of the three-dimensional geographic information in the geography learning environment.
Analysis of the Geomorphological Environments of High-Density Residential Zone in Bronze Age around Asan City, Central Korea - A Case Study of Yongdoocheon and Onyangcheon Basin -
Park, Ji-Hoon ; Park, Jong-Chul ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 110~125
DOI : 10.11108/kagis.2011.14.3.110
A number of the Bronze Age dwelling sites have been found and excavated in the Yoodoocheon, Onyangcheon and Baekseokdong basins. Two basins are located near Asan and Onyan in the Chungnam Province of South Korea. Baekseokdong is located in Cheonan, Chungnam. 207 dwelling sites are concentrated around the area of
in the Baekseokdong. 177 dwelling sites are sparse and distributed over the area of
in the Yongdoocheon and Onyangcheon basins. Most of the Bronze Age dwelling sites in those areas located on the hill. The hills have similar geomorphological environments except for slight differences in geological faces. This study analyzes geomorphological environments of the high-density residential zone of the Bronze Age in the Yoodoocheon and the Onyangcheon basins, and then compares them with the results in Baekseokdong. Study results show that high-density residential zone consists mainly of specific micro-landforms such as the Crest slope, the Crest flat and the Upper side slope, and southeast-facing aspect. A lot of Gentle slope lands were distributed in terms of terrain slope but it is far from specific geomorphological environments. This is not weighted in specific value. Our results show that the geomorphological characteristic derived from this study is major considerations to develop dwelling sites in the Bronze Age. This can be useful to discover the possible dwelling sites over other Chungnam hill regions.
Development of Algorithm for Analyzing Priority Area of Forest Fire Surveillance Using Viewshed Analysis
Lee, Byung-Doo ; Ryu, Gye-Sun ; Kim, Sun-Young ; Kim, Kyong-Ha ; Lee, Myung-Boa ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 126~135
DOI : 10.11108/kagis.2011.14.3.126
In this study, the algorithm for priority area of forest fire surveillance was developed to enhance the effectiveness of fire detection. The high priority surveillance area for forest fire detection was defined as the area with not only low value of viewshed analysis of the lookouts and detection cameras but also high fire occurrence probability. To build the priority map, fuzzy function and map algebra were used. The analysis results of Bonghwa-gun, Gyeongbuk Province, showed that the surveillance priority of central and southern area is higher than north area. This algorithm could be used in the allocation of fire prevention resources and selection of suitable point for new fire detection system.
Development of Spatial Statistical Downscaling Method for KMA-RCM by Using GIS
Baek, Gyoung-Hye ; Lee, Moun-Gjin ; Kang, Byung-Jin ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 136~149
DOI : 10.11108/kagis.2011.14.3.136
The aim of this study is to develop future climate scenario by downscaling the regional climate model (RCM) from global climate model (GCM) based on IPCC A1B scenario. To this end, the study first resampled the KMA-RCM(Korea meteorological administration-regional climate model) from spatial resolution of 27km to 1km. Second, observed climatic data of temperature and rainfall through 1971-2000 were processed to reflect the temperature lapse rate with respect to the altitude of each meteorological observation station. To optimize the downscaled results, Co-kriging was used to calculate temperature lapse-rate; and IDW was used to calculate rainfall lapse rate. Fourth, to verify results of the study we performed correlation analysis between future climate change projection data and observation data through the years 2001-2010. In this study the past climate data (1971-2000), future climate change scenarios(A1B), KMA-RCM(Korea meteorological administration-regional climate model) results and the 1km DEM were used. The research area is entire South Korea and the study period is from 1971 to 2100. Monthly mean temperatures and rainfall with spatial resolution of 1km * 1km were produced as a result of research. Annual average temperature and precipitation had increased by
and 271.23mm during 1971 to 2100. The development of downscaling method using GIS and verification with observed data could reduce the uncertainty of future climate change projection.
Spatio-Temporal Analysis of Forest Fire Occurrences during the Dry Season between 1990s and 2000s in South Korea
Won, Myoung-Soo ; Yoon, Suk-Hee ; Koo, Kyo-Sang ; Kim, Kyong-Ha ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 150~162
DOI : 10.11108/kagis.2011.14.3.150
For the period between 1991 and 2009, the annual average of 448 forest fires occurred in Korea. Above all, approximately 94% of the total fires frequently occurred during the spring and fall seasons. Therefore, we need to minimize the damage of forest fire and manage them systematically. In this study, we analyzed the spatio-temporal distribution patterns for the frequency of forest fire occurrences by each city and gun during dry season between 1990s and 2000s using GIS. Then we compared to analyze the frequency of forest fire occurrence by ten-day intervals in 2000s with that in 1990s. As a result of analysis, early April showed the highest frequency of forest fire occurrence in both 1990s and 2000s. Compared to the 1990s and 2000s, the regional change of forest fire showed the most frequent fire events around Chungcheong province. Especially extra 27 fires increased in Daejeon city, and the second most frequent fire had more than 10 fires in Jeolla province and Incheon. However, the number of fire frequency decreased by 12 fires at the end of April in Hongcheon-gun(the province of Gangwon). This is the largest drop over the study period. We consider that this paper will utilize usefully to establish regional counterplan for forest fire prevention by understanding regional forest fire patterns from seasonal change.
A Case Study for Evaluating Forest Functions by Watershed Unit: Gyeongsangnam-do
Kim, Hyung-Ho ; Park, Young-Kyu ; Roh, Hye-Jung ; Jeon, Jun-Heon ; Hwang, Jin-Yeong ; Kang, Hyeon-Deug ; Park, Joon-Hyung ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 163~173
DOI : 10.11108/kagis.2011.14.3.163
This paper, as a case study on the evaluation of nationwide-unit forest functions, targeting the entire Gyeongsangnam-do region, examined the integration measures for the evaluation of national, public and private forest functions, as well as GIS data problems and GIS data building methods. Also, the distribution and characteristics of Gyeongsangnam-do's forest functions were examined. First, as integration measures for forest function evaluation, evaluation unit was proposed as watershed unit, and GIS techniques were proposed to correct some patterns of errors shown in the watershed maps. Also, of GIS data used for forest function evaluation, maps of locations of saw mills to be revised, expressway interchange location maps, and population distribution maps were built nationwide. Based on watershed units, the forest functions of 20 cities and counties in Gyeongsangnam-do were evaluated, revealing that wood production function and forest recreation function potentials, high-ranking was high distributed throughout the site, while most functions potentials, low-ranking was low distributed. In forest function maps with the application of priority by city and gun, the area size was ranked in the order of forest recreation, timber production, natural conservation, water yield, living environment conservation, and prevention of natural disaster. Case analysis results for large areas can be used in evaluating nationwide forest functions.
Development of the Topography Restoration Method for Debris Flow Area Using Airborne LiDAR Data
Woo, Choong-Shik ; Youn, Ho-Joong ; Lee, Chang-Woo ; Lee, Kyu-Sung ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 174~187
DOI : 10.11108/kagis.2011.14.3.174
The flowed soil is able to be estimated from topographic data of before and after the debris flow. However, it is often difficult to obtain airborne LiDAR data before the debris flow area. Thus, this study tries to develop a topographic restoration method that can provide spatial distribution of flowed soil and reconstruct the topography before the debris flow using airborne LiDAR data. The topographic restoration method can express a numerical formula induced from a Gaussian mixture model after extracting the cross sections of linear or non-linear in debris flowed area. The topographic restoration method was verified by two ways using airborne LiDAR data of before and after the debris flow. First, each cross section extracted from the debris flow sites to restore the topography was compared with airborne LiDAR data of before the debris flow. Also, the topographic data produced after the topographic restoration method applied to the debris flow sites was verified by airborne LiDAR DEM. Verifying the results of the topographic restoration method, overall fitting accuracy showed high accuracy close to 0.5m.
Projection of Future Snowfall by Using Climate Change Scenarios
Joh, Hyung-Kyung ; Kim, Saet-Byul ; Cheong, Hyuk ; Shin, Hyung-Jin ; Kim, Seong-Joon ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 188~202
DOI : 10.11108/kagis.2011.14.3.188
Due to emissions of greenhouse gases caused by increased use of fossil fuels, the climate change has been detected and this phenomenon would affect even larger changes in temperature and precipitation of South Korea. Especially, the increase of temperature by climate change can affect the amount and pattern of snowfall. Accordingly, we tried to predict future snowfall and the snowfall pattern changes by using the downscaled GCM (general circulation model) scenarios. Causes of snow varies greatly, but the information provided by GCM are maximum / minimum temperature, rainfall, solar radiation. In this study, the possibility of snow was focused on correlation between minimum temperatures and future precipitation. First, we collected the newest fresh snow depth offered by KMA (Korea meteorological administration), then we estimate the temperature of snow falling conditions. These estimated temperature conditions were distributed spatially and regionally by IDW (Inverse Distance Weight) interpolation. Finally, the distributed temperature conditions (or boundaries) were applied to GCM, and the future snowfall was predicted. The results showed a wide range of variation for each scenario. Our models predict that snowfall will decrease in the study region. This may be caused by global warming. Temperature rise caused by global warming highlights the effectiveness of these mechanisms that concerned with the temporal and spatial changes in snow, and would affect the spring water resources.
Vulnerability Analysis in the Nakdong River Basin for the Utilization of Flood Risk Mapping
Kim, Tae-Hyung ; Han, Kun-Yeun ; Cho, Wan-Hee ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 203~222
DOI : 10.11108/kagis.2011.14.3.203
The characteristics of flood damages have been increasingly strengthened and take the form of unpredictable and unusual weather phenomena caused by climate change and climate anomalies. To prevent inundation damage caused by breach of hydraulic structure such as dam or levee, and trouble of drainage of inner basin, the prediction necessity of flood inundation area, flood risk analysis, and drawing flood risk maps have been on the rise, and the national flood risk maps have been produced. In this study, the quantitative flood vulnerability analysis was performed, which represents population living within flood-affected areas, types of economic activities, facilities affected by flood, in order to extend flood risk mapping from simple hazard concept into risk based idea. By applying it to Nakdong River basin, the flood vulnerability indices were estimated to draw flood risk maps subdivided into administrative districts. The result of this study can be applied to establish the disaster prevention measures and priority decision of disaster prevention project.
Exploring the Spatial Relationships between Environmental Equity and Urban Quality of Life
Jun, Byong-Woon ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 223~235
DOI : 10.11108/kagis.2011.14.3.223
Although ordinary least squares (OLS) regression analysis can be used to examine the spatial relationships between environmental equity and urban quality of life, this global method may mask the local variations in the relationships between them. These geographical variations can not be captured without using local methods. In this context, this paper explores the spatially varying relationships between environmental equity and urban quality of life across the Atlanta metropolitan area by geographically weighted regression (GWR), a local method. Environmental equity and urban quality of life were quantified with an integrated approach of GIS and remote sensing. Results show that generally, there is a negatively significant relationship between them over the Atlanta metropolitan area. The results also suggest that the relationships between environmental equity and urban quality of life vary significantly over space and the GWR (local) model is a significant improvement on the OLS (global) model for the Atlanta metropolitan area.
Overview of Research Trends in Estimation of Forest Carbon Stocks Based on Remote Sensing and GIS
Kim, Kyoung-Min ; Lee, Jung-Bin ; Kim, Eun-Sook ; Park, Hyun-Ju ; Roh, Young-Hee ; Lee, Seung-Ho ; Park, Key-Ho ; Shin, Hyu-Seok ;
Journal of the Korean Association of Geographic Information Studies, volume 14, issue 3, 2011, Pages 236~256
DOI : 10.11108/kagis.2011.14.3.236
Forest carbon stocks change due to land use change is an important data required by UNFCCC(United Nations framework convention on climate change). Spatially explicit estimation of forest carbon stocks based on IPCC GPG(intergovernmental panel on climate change good practice guidance) tier 3 gives high reliability. But a current estimation which was aggregated from NFI data doesn't have detail forest carbon stocks by polygon or cell. In order to improve an estimation remote sensing and GIS have been used especially in Europe and North America. We divided research trends in main countries into 4 categories such as remote sensing, GIS, geostatistics and environmental modeling considering spatial heterogeneity. The easiest way to apply is combination NFI data with forest type map based on GIS. Considering especially complicated forest structure of Korea, geostatistics is useful to estimate local variation of forest carbon. In addition, fine scale image is good for verification of forest carbon stocks and determination of CDM site. Related domestic researches are still on initial status and forest carbon stocks are mainly estimated using k-nearest neighbor(k-NN). In order to select suitable method for forest in Korea, an applicability of diverse spatial data and algorithm must be considered. Also the comparison between methods is required.