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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 18, Issue 4 - Dec 2015
Volume 18, Issue 3 - Sep 2015
Volume 18, Issue 2 - Jun 2015
Volume 18, Issue 1 - Mar 2015
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Extraction of Heavy Snowfall Vulnerable Area for 3 Representative Facilities Using GIS and Remote Sensing Techniques
Ahn, So-Ra ; Shin, Hyung-Jin ; Kim, Seong-Joon ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 1~12
DOI : 10.11108/kagis.2015.18.1.001
This study is to analyze the heavy snowfall vulnerable area of snow load design criteria for greenhouse, cattle shed and building using ground measured snow depth data and Terra MODIS snow cover area(SCA). To analyze the heavy snowfall vulnerable area, Terra MODIS satellite images for 12 years(2001-2012) were used to obtain the characteristics of snow depth and snow cover areas respectively. By comparing the snow load design criteria for greenhouse(cm), cattle shed(
), and building structure(
) with the snow depth distribution results by Terra MODIS satellite images, the facilities located in Jeolla-do, Chungcheong-do, and Gangwon-do areas were more vulnerable to exceed the current design criteria.
A Study on the Preference and Introduction of the Outdoor Play Facilities for Children in a Metropolitan Area
Kim, Gyeong-Su ; Baek, Tae-Kyung ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 13~24
DOI : 10.11108/kagis.2015.18.1.013
Busan Metropolitan City lacks leisure-oriented spaces for children compared to other cities. Furthermore, it is difficult to maintain the amusement facilities for children scattered around the city due to the fact that they were worn out. To set up a leisure-oriented park for children on the site for children amusement facilities, the present study is concerned about planning children amusement facilities for public use compatible with the new trend for children amusement facilities. For this purpose, a number of case studies, carried out domestic and abroad on developing children amusement facilities, were examined to choose appropriate facilities and feasible project plans were drawn up. Major findings of the study are as follows. First, it is strongly suggested that this project should be promoted because it is a leading pilot project for building children theme parks for each zone in Busan Metropolitan City. Second, it is suggested that field study programs should be run in connection with Busan Metropolitan City Office of Education.
An Analysis of Locational Characteristics and User Behavior of Neighborhood Parks in Central Business District
Choi, Chul-Hyun ; Woo, Young-Sook ; Jung, Sung-Gwan ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 25~47
DOI : 10.11108/kagis.2015.18.1.025
The user behaviors in the parks around the commercial area may have different characteristics in comparison with the behaviors in typical neighborhood parks because they may be affected by nearby commercial facilities. The purpose of this study is to explore the characteristics of park users`behavior considering adjacent environments in the neighborhood parks located in central business district of Daegu and to suggest improvements and complements for the construction of new parks and remodeling current parks. According to the results, the land values were high and the percentage of deteriorated buildings was low around Gukchae Reward Movement Memorial Park and 2.28 Central Memorial Park. However, the commercial facilities were entirely declined along with a drop in land values around Gyeongsang-gamyeong Park and old people used this park more than young people. In terms of the purpose of park use, users of three parks had indirect behavior patterns related near commercial facilities rather than using directly park facilities and the age groups of park users were similar to the user groups of nearby commercial facilities. Also, the determinant factors of satisfaction with park use were varied depending on the difference of age groups of park users and park characteristics. Therefore, it is necessary to consider the effects of user age groups according to the changes of environment around parks for the construction and organization of parks.
Current Status of Hyperspectral Data Processing Techniques for Monitoring Coastal Waters
Kim, Sun-Hwa ; Yang, Chan-Su ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 48~63
DOI : 10.11108/kagis.2015.18.1.048
In this study, we introduce various hyperspectral data processing techniques for the monitoring of shallow and coastal waters to enlarge the application range and to improve the accuracy of the end results in Korea. Unlike land, more accurate atmospheric correction is needed in coastal region showing relatively low reflectance in visible wavelengths. Sun-glint which occurs due to a geometry of sun-sea surface-sensor is another issue for the data processing in the ocean application of hyperspectal imagery. After the preprocessing of the hyperspectral data, a semi-analytical algorithm based on a radiative transfer model and a spectral library can be used for bathymetry mapping in coastal area, type classification and status monitoring of benthos or substrate classification. In general, semi-analytical algorithms using spectral information obtained from hyperspectral imagey shows higher accuracy than an empirical method using multispectral data. The water depth and quality are constraint factors in the ocean application of optical data. Although a radiative transfer model suggests the theoretical limit of about 25m in depth for bathymetry and bottom classification, hyperspectral data have been used practically at depths of up to 10 m in shallow and coastal waters. It means we have to focus on the maximum depth of water and water quality conditions that affect the coastal applicability of hyperspectral data, and to define the spectral library of coastal waters to classify the types of benthos and substrates.
Design of Network Architecture in Underground Structure Field Information Based on VI-GNSS
Jeon, Heung-Soo ; Jang, Yong-Gu ; Oh, Chang-Kyun ; Kim, Min-Koan ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 64~73
DOI : 10.11108/kagis.2015.18.1.064
Recently, the integrated utilization of technology with IT is in demand for the effectiveness of field management together with the prevention and prompt action on safety accident at construction site. In addition, the establishment of construction site support system is necessary to implement the securing of worker`s safety, smooth work instruction, efficiency in construction, and others. Data standardization and network architecture were designed regarding data and sound information for data transmission between systems and management. These were to construct USFSS based on integrated VI-GNSS technology in this research. In the stability test of data for each system constructed through it, around 98% stability was secured between workers and for transfer vehicle system within underground structure and field server system in regards to the data transmission stability, around 100% stability was secured between field server system and control system, respectively. Also, in the sound transmission stability test, around 99% reliability could be secured with 1km distance as its standard in case of sound transmission from underground structure construction site to field office near the field through wireless FRS system.
A Study on Inundation Analysis Considering Inland and River Flood
Cho, Wan-Hee ; Han, Kun-Yeun ; Kim, Hyeon-Sik ; Kim, Jin-Soo ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 74~89
DOI : 10.11108/kagis.2015.18.1.074
The objective of this study is to present countermeasures for mitigation of flood damage with inundation analysis considering the effect of inland and river flood and prediction of flood inundation area, depth and time against emergencies caused by abnormal flood and local torrential rainfall. In this study, 2-D inundation analysis was fulfilled on the basis of river flood analysis applying to HEC-HMS and FLDWAV model and inundation analysis applying to SWMM model for the area of Shineum-dong, Gimcheon-si. Also expected inundation depth and area about probable rainfall of 100 and 200 years frequency were suggested. If expected inundation depth and flooding area is presented on the basis of this inundation analysis considering the effect of inland and river flood, it would be an important preliminary data to establish structural and nonstructural countermeasures for flood prevention. Also if flood risk map is prepared based on the result of inundation analysis, it would be useful to evacuate residents in high-risk area and regulate road and vehicle.
Estimation of Spatial Evapotranspiration Using Terra MODIS Satellite Image and SEBAL Model - A Case of Yongdam Dam Watershed -
Lee, Yong-Gwan ; Kim, Sang-Ho ; Ahn, So-Ra ; Choi, Min-Ha ; Lim, Kwang-Suop ; Kim, Seong-Joon ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 90~104
DOI : 10.11108/kagis.2015.18.1.090
The purpose of this paper is to build a spatio-temporal evapotranspiration(ET) estimation model using Terra MODIS satellite image and by calibrating with the flux tower ET data from watershed. The fundamentals of spatial ET model, Surface Energy Balance Algorithm for Land(SEBAL) was adopted and modified to estimate the daily ET of Yongdam Dam watershed in South Korea. The daily Normalized Distribution Vegetation Index(NDVI), Albedo, and Land Surface Temperature(LST) from MODIS and the ground measured wind speed and solar radiation data were prepared for 2 years(2012-2013). The SEBAL was calibrated with the forest ET measured by Deokyusan flux tower in the study watershed. Among the model parameters, the important parameters were surface albedo, NDVI and surface roughness in order for momentum transport during calculation of sensible heat flux. As a result of the final calibration, the monthly averaged albedo and NDVI were used because the daily values showed big deviation with unrealistic change. The determination coefficient(
) between SEBAL and flux data was 0.45. The spatial ET reflected the geographical characteristics showing the ET of lowland areas was higher than the highland ET.
A Study on Application of Open Platform of Spatial Information for Improvement of Environment Impact Assessment Supporting System
Song, Dae-Ho ; Ryu, Ji-Won ; Jung, Eung-Ho ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 105~119
DOI : 10.11108/kagis.2015.18.1.105
A case study to test the open API service functions of Geographic Information Open Platform(Vworld) for Environmental Impact Assessment was carried out for improving the function of Environmental Impact Assessment Geographic Information System(EIAGIS) which is one of Environmental Impact Assessment Supporting System(EIASS) used for current Environmental Impact Assessment. Followings are the summary of the study. First, utilization of EIAGIS was low since DB renewal was limited and the quality of 2D based topographic information was low. A new service which could respond to practitioners` needs could be developed to use a open API service of Vworld provided by the Ministry of Land, Infrastructure and Transport to make up those disadvantages. EIASS with Vworld could provide a consulting service from the beginning stage of business plan and make improvements of confidence as well as fast agreements since both consultation agencies and assessment agencies are using a same program during Environmental Impact Assessment process with customized information.
Application of InVEST Water Yield Model for Assessing Forest Water Provisioning Ecosystem Service
Song, Chol-Ho ; Lee, Woo-Kyun ; Choi, Hyun-Ah ; Jeon, Seong-Woo ; Kim, Jae-Uk ; Kim, Joon-Soon ; Kim, Jung-Taek ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 120~134
DOI : 10.11108/kagis.2015.18.1.120
InVEST Water Yield model developed by Natural Capital Project was applied for South Korea to assess domestic forest ecosystem`s water provisioning services. The InVEST Water Yield model required 8 input dataset, including six spatial map data and two derived by coefficients. By running the model with relatively easy acquired and modified data, the result of domestic forest ecosystem`s water provisioning services was 9,409,622,083 ton using the standard of the year 2011. The result showed similar patterns and distribution of rainfall in 2011, but showed difference when compared with existing researches spatially driven in nationwide statistical analysis results. This difference is assumed to occur with different model mechanism in spatial implementation and statistical analysis. So given that the model is currently still developing, applications should be taken on qualitative perspectives rather than on quantitative perspectives. Additionally, for advancing the application of InVEST water yield model, quantification of suitable input data and comparison using multi-modeling is required.
Home Range Analysis of a Pair of Gorals (Naemorhedus caudatus) Using GPS Collar According to the Elevation Change, in the North Gyeongbuk Province(Uljin) of Korea
Cho, Chea-Un ; Kim, Ki-Yoon ; Kim, Kyu-Cheol ; Kim, Hyun-Min ; An, Jae-Yong ; Lee, Bae-Keun ; Park, Jong-Gil ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 135~146
DOI : 10.11108/kagis.2015.18.1.135
This study was carried out to understand ecological characteristics of Korean goral such as home range, seasonal home range and habitat use and used for Korean goral restoration and conservation, through a pair of gorals in the north Gyeongbuk province of Korea. With data from GPS collars, we analyzed the behavioral characteristics of the endangered Korean gorals(n
A Comparative Analysis for the Digitizing Accuracy by Satellite Images for Efficient Shoreline Extraction
Kim, Dong-Hyun ; Park, Ju-Sung ; Jo, Myung-Hee ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 147~155
DOI : 10.11108/kagis.2015.18.1.147
The existing field survey and aerial photography involve the waste of manpower and economic loss in the coastline survey. To minimize these disadvantages, the digitization for efficient coastline extraction was conducted in this study using the points extracted from the standard coastline of the approximate highest high water and the diverse satellite images (KOMPSAT-3, SPOT-5, Landsat-8 and Quickbird-2), and the comparative accuracy analysis was conducted. The differences between the standard coastline points of the approximate highest high water and the coastline of each satellite were smallest for KOMPSAT-3, followed by Quickbird-2, SPOT-5 and Landsat-8. The significant probability from between the multipurpose applications satellite and Quickbird-2 (significant probability two-tailed) was statistically significant at 1% significance level. Therefore, high-resolution satellite images are required to efficiently extract the coastline, and KOMPSAT-3, from which images are easily acquired at a low cost, will enable the most efficient coastline extraction without external support.
Assessment of Climate Change Impact on Imha-Dam Watershed Hydrologic Cycle under RCP Scenarios
Jang, Sun-Sook ; Ahn, So-Ra ; Joh, Hyung-Kyung ; Kim, Seong-Joon ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 156~169
DOI : 10.11108/kagis.2015.18.1.156
This study was to evaluate the RCP climate change impact on hydrological components in the Imha-Dam watershed using SWAT(Soil and Water Assessment Tool) Model. The model was calibrated for six year(2002~2007) and validated for six year(2008~2013) using daily observed streamflow data at three watershed stations. The overall simulation results for the total released volume at this point appear reasonable by showing that coefficient of determination(
) were 0.70~0.85 and Nash-Sutcliffe model efficiency(NSE) were 0.67-0.82 for streamflow, respectively. For future hydrologic evaluation, the HadGEM3-RA climate data by scenarios of Representative Concentration Pathway(RCP) 4.5 and 8.5 of the Korea Meteorological Administration were adopted. The biased future data were corrected using 34 years(1980~2013, baseline period) of weather data. Precipitation and temperature showed increase of 10.8% and 4.9%, respectively based on the baseline data. The impacts of future climate change on the evapotranspiration, soil moisture, surface runoff, lateral flow, return flow and streamflow showed changes of +11.2%, +1.9%, +10.0%, +12.1%, +18.2%, and +11.2%, respectively.
A Study on Extraction of Croplands Located nearby Coastal Areas Using High-Resolution Satellite Imagery and LiDAR Data
Choung, Yun-Jae ;
Journal of the Korean Association of Geographic Information Studies, volume 18, issue 1, 2015, Pages 170~181
DOI : 10.11108/kagis.2015.18.1.170
A research on extracting croplands located nearby coastal areas using the spatial information data sets is the important task for managing the agricultural products in coastal areas. This research aims to extract the various croplands(croplands on mountains and croplands on plain areas) located nearby coastal areas using the KOMPSAT-2 imagery, the high-resolution satellite imagery, and the airborne topographic LiDAR(Light Detection And Ranging) data acquired in coastal areas of Uljin, Korea. Firstly, the NDVI(Normalized Difference Vegetation Index) imagery is generated from the KOMPSAT-2 imagery, and the vegetation areas are extracted from the NDVI imagery by using the appropriate threshold. Then, the DSM(Digital Surface Model) and DEM(Digital Elevation Model) are generated from the LiDAR data by using interpolation method, and the CHM(Canopy Height Model) is generated using the differences of the pixel values of the DSM and DEM. Then the plain areas are extracted from the CHM by using the appropriate threshold. The low slope areas are also extracted from the slope map generated using the pixel values of the DEM. Finally, the areas of intersection of the vegetation areas, the plain areas and the low slope areas are extracted with the areas higher than the threshold and they are defined as the croplands located nearby coastal areas. The statistical results show that 85% of the croplands on plain areas and 15% of the croplands on mountains located nearby coastal areas are extracted by using the proposed methodology.