Browse > Article
http://dx.doi.org/10.15683/kosdi.2022.3.31.051

Analyzing Accessibility of Emergency Shelters Based on Service Population: The Case of Outdoor Evacuation Places for Earthquake in Jung-gu, Seoul  

Kim, Sang-Gyoon (The Seoul Institute)
Shin, Sang-Young (The Seoul Institute)
Nam, Hyeon-Jung (The Seoul Institute)
Publication Information
Journal of the Society of Disaster Information / v.18, no.1, 2022 , pp. 51-62 More about this Journal
Abstract
Purpose: This study analyzes accessibility of outdoor evacuation places for earthquake and the accessibility improvement effects when expanding the evacuation places in accessibility-deficient areas. In order to consider real-world evacuees, the accessibility analysis is based on service population not on resident population. Method: Location-allocation model as a GIS-based spatial optimization mode is used to analyze accessibility and vulnerable areas to evacuation places. Of location-allocation problem types, 'Maximize Coverage' method is chosen to allocate as many potential evacuees as possible to evacuation places. And impedence cutoffs or evacuation distances (times) are applied to three classes: 500m (7.5 minutes), 1,000m (15 minutes), and 1,500m (22.5 minutes). Case study area is Jung-gu areas, Seoul as a high-density downtown area. Result: Results show that accessibility-deficient areas and population to evacuation places are much more in service population than in resident population. Accessibility is significantly improved when increases when expanding the evacuation places in accessibility-deficient areas. Yet, accessibility-deficient areas are still remained since available lands are insufficient in the high-density downtown area. Conclusion: The study suggests that temporary evacuation facilities like outdoor evacuation places for earthquake need to consider real potential evacuees based not only on resident population but also on service population. Also, policy measures to provide emergency shelters need to more utilize spatial optimization tools like location-allocation model.
Keywords
Emergency Shelter; Outdoor Evacuation Place for Earthquake; Service Population; Location-Allocation Model; Accessibility;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Lee, S.H., Goo, S.H., Chun, Y.W., Park, Y.J. (2015). "The spatial location analysis of disaster evacuation shelter for considering resistance of road slope and difference of walking speed by age-case study of Seoul, Korea." Journal of Korean Society for Geospatial Information System, Vol. 23, No. 2, pp. 69-77.   DOI
2 Cho, W.K. (2017). A Study on Methodology for Shelter Location Problem with Evacuation demand and Target Evacuation Time. Master's dissertation, Yonsei University.
3 ESRI ArcGIS Network-Analyst. https://desktop.arcgis.com/en/arcmap/latest/extensions/network-analyst
4 Hong, H., Lah, T.J. (2020). "A GIS analysis on the equity and efficiency of the disaster evacuation facilities locations: The case of civil defense evacuation facilities in Busan." The Korean Journal of Local Government Studies, Vol. 24, No. 3, pp. 125-144.   DOI
5 Ju, J.S., Park, M.J. (2017). "A study on the planning of suppliable indoor temporary housing facility that is possible for disaster." Journal of the Society of Disaster Information, Vol. 13, No. 4, pp. 519-528.
6 Kim, J.O., Lee, J.K. (2018). "Safety analysis of pedestrian-centered flood evacuation facility." Journal of the Korean Society of Hazard Mitigation, Vol. 18, No. 7, pp. 449-456.   DOI
7 Kim, M.K., Kang, S., Kim, S.P., Sohn, H.G. (2016). "A spatial analysis of shelter capacity using floating population." Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, Vol. 34, No. 1, pp. 1-10.   DOI
8 National Disaster Management Research Institute (2014). Technology Development of Integrated Shelter Management and Evacuee Support in Shelter. 11-1312184-000099-01, Ulsan, Korea.
9 Seoul Open Data Plaza. https://data.seoul.go.kr
10 Park, J.K., Kim, D.M. (2012). "Analysis of shelter service areas according to walking speed using network analysis." Journal of Korean Society for Geospatial Information System, Vol. 20, No. 4, pp. 37-44.   DOI
11 Yoo, S., Kim, M.K., Bae, J., Sohn, H.G. (2018). "Selection of appropriate location for civil defense shelters using genetic algorithm and network analysis." Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, Vol. 36, No. 6, pp. 573-580.   DOI
12 The Seoul Institute (2021). Current status and improvements of emergency shelters in Seoul.
13 Park, J.K. (2018). "Evaluation of civil defense evacuation shelter locations in fitness according to the walking speed and changing floating population in time and space." Journal of Convergence for Information Technology, Vol. 8, No. 1, pp. 95-103.   DOI
14 Hong, E.K., Kim, M.S., Yeom, T.J., Park, M.J. (2017). "A Study of the Reasonable Space for Each Person about Inner Evacuated Facility." Journal of the Society of Disaster Information, Vol. 13, No. 1, pp. 15-25.   DOI
15 Kang, S. (2015). A Study on the Selection of Vulnerable Area for Disaster Shelter using Network Analysis. Master's dissertation, Yonsei University.
16 Kwon, J., Yoon, D., Koh, J. (2015)." Analysis of shelters acceptable range according to evacuation speed during flood disaster by severe rain storm." Journal of the Korean Society of Hazard Mitigation, Vol. 15, No. 3, pp. 115-123.   DOI
17 Statistical Geographic Information Service. https://sgis.kostat.go.kr