Browse > Article
http://dx.doi.org/10.14481/jkges.2021.22.7.13

A Study on the Determination of Indicators for the Risk Assessment of Ground Depression Using SAR Imageson  

Lee, Hyojin (School of Civil, Architectural Engineering, SUNGKYUNWAN University)
Yoon, Hongsic (School of Civil, Architectural Engineering, and Landscape Architecture, SUNGKYUNWAN University)
Han, Hak (Interdisciplinary Program in Crisis Disaster and Risk Management, SUNGKYUNWAN University)
Publication Information
Journal of the Korean GEO-environmental Society / v.22, no.7, 2021 , pp. 13-20 More about this Journal
Abstract
The problem of subsidence of the roadbed near the Honam High Speed Railway, which opened in April 2015, continues to be raised, and the ground stability of the area near the Honam High Speed Railway may also be problematic. It is very important to select the factors that determine the indicators and indicators in producing the risk maps. Existing risk indicators are calculated as the final displacement volume based on the last observed date of the observed period, and time-series indicator displacement must be identified to analyze the cause of subsidence and the behavior of the indicator. Furthermore, for a wide range of regions, it is economically inefficient to conduct direct level measurements, so we wanted to observe surface displacement using SAR images. In this paper, time series indicator displacement was observed using PS-InSAR techniques, and risk was compared by rating each factor using the difference between final indicator displacement, cumulative indicator displacement, minimum displacement and maximum displacement as factors for determining risk indicators. As a result, the risk rating of the final displacement is different from that of each factor, and we propose adding factors from different perspectives in determining risk indicators. It is expected to be an important study in finding the cause of ground subsidence and finding solutions.
Keywords
PS-InSAR; Time series ground subduction; Final subduction; Min-max value(Min-Max); Cumulative surface displacement;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Lee, H. J., Choi, Y. T., Lee, I. H., Lee, M. S. and Lee, T. G. (2017), Investigation of settlement of concrete track on high-speed railway due to groundwater variation, Journal of the Korean Society for Railway, Vol. 20, No. 2, pp. 248~256.   DOI
2 Meisina, C., Zucca, F., Notti, D., Colombo, A., Cucchi, A., Savio, G., Giannico, C. and Bianchi, M. (2008), Geological interpretation of PSInSAR data at regional scale, Sensors, Vol. 8, No. 11, pp. 7469~7492.   DOI
3 Rosi, A., Tofani, V., Tanteri, L., Stefanelli, C. T., Agostini, A., Catani, F., and Casagli, N. (2018), The new landslide inventory of Tuscany (Italy) updated with PS-InSAR: geomorphological features and landslide distribution, Landslides, Vol. 15, No. 1, pp. 5~19.   DOI
4 Yun, S. H., Lee, J. H. and Chang, C. W. (2013), A study on the change of magma activity from 2002 to 2009 at Mt. Baekdusan using surface displacement, Journal of the Korean earth science society, Vol. 34, No. 6, pp. 470~478.   DOI
5 Yang, K., Yan, L., Huang, G., Chen, C. and Wu, Z. (2016), Monitoring building deformation with InSAR: experiments and validation, Sensors, Vol. 16, No. 12, 2182.   DOI
6 Perissin, D. and Wang, T. (2010), Time-series InSAR applications over urban areas in China, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol. 4, No. 1, pp. 92~100.   DOI
7 Kim, Y. H., Eum, K. Y., Han, S. J., Park, Y. G. and Jung, J. H. (2015), A study on settlement characteristics of earthwork subgrade with lowering the groundwater in highspeed railway, Journal of the Korean Geotechnical Society, Vol. 31, No. 5, pp. 67~74.   DOI
8 Youm, M. K. (2019), Analysis of surface displacement and GIS based risk assessment in wide area using high resolution SAR images, Ph. D. dissertation, SungKyunKwan University, pp. 77~85.
9 Cho, M. J., Zhang, L. and Lee, C. W. (2013), Monitoring of volcanic activity of augustine volcano, Alaska Using TCPInSAR and SBAS time-series techniques for measuring surface deformation, Korean Journal of Remote Sensing, Vol. 29, No. 1, pp. 21~34.   DOI
10 Ferretti, A., Prati, C. and Rocca, F. (1999), Multibaseline InSAR DEM reconstruction: The wavelet approach, IEEE Transactions on geoscience and remote sensing. Vol. 37, No. 2, pp. 705~715.   DOI