Econ. Environ. Geol. 2012; 45(5): 503-512

Published online October 31, 2012

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Analysis of Ground Subsidence using ALOS PALSAR (2006~2010) in Taebaek, Kangwon

Minji Cho and Sang-Wan Kim*

Department of Geoinformation Engineering, Sejong University, Seoul 143-747, Korea

Correspondence to :

Sang-Wan Kim

swkim@sejong.edu

Received: June 10, 2012; Accepted: October 19, 2012

Abstract

<p>We performed DInSAR (Differential Interferometric SAR) and SBAS (Small BAseline Subset) analysis using spaceborne SAR (Synthetic Aperture Radar) in order to detect a surface subsidence in Taebaek area, Kangwon, which are suitable to the monitoring of broad and inaccessible areas. During the period from October 2006 to June 2010, we acquired twenty-three ALOS PALSAR data sets(path/frame=425/730) for this study. The ninety-six differential interferograms with a perpendicular baseline less than 1100 m were constructed by ROI_PAC, then the mean velocity map of surface displacement was derived from SBAS analysis. As a result, it was confirmed that the ground displacement occurred about 4 cm/yr at Seokgong-Jangseong and Kyungdong mines and 2 cm/yr at Saehan-
Eoryong-Jungdong and Hwangji mines in Taebaek area, Kangwon. It seems that the subsidence in study area is closely related to mining activities because the most of subsiding areas are well matched with mining areas. The subsidence at Kyungdong mine shows continuous and fast velocity in about 2 × 2 km area. Therefore the further analysis and the effort to prevent disaster are required in this area.

Keywords subsidence, mine, SAR, SBAS, ALOS

Article

Econ. Environ. Geol. 2012; 45(5): 503-512

Published online October 31, 2012

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Analysis of Ground Subsidence using ALOS PALSAR (2006~2010) in Taebaek, Kangwon

Minji Cho and Sang-Wan Kim*

Department of Geoinformation Engineering, Sejong University, Seoul 143-747, Korea

Correspondence to:

Sang-Wan Kim

swkim@sejong.edu

Received: June 10, 2012; Accepted: October 19, 2012

Abstract

We performed DInSAR (Differential Interferometric SAR) and SBAS (Small BAseline Subset) analysis using spaceborne SAR (Synthetic Aperture Radar) in order to detect a surface subsidence in Taebaek area, Kangwon, which are suitable to the monitoring of broad and inaccessible areas. During the period from October 2006 to June 2010, we acquired twenty-three ALOS PALSAR data sets(path/frame=425/730) for this study. The ninety-six differential interferograms with a perpendicular baseline less than 1100 m were constructed by ROI_PAC, then the mean velocity map of surface displacement was derived from SBAS analysis. As a result, it was confirmed that the ground displacement occurred about 4 cm/yr at Seokgong-Jangseong and Kyungdong mines and 2 cm/yr at Saehan-
Eoryong-Jungdong and Hwangji mines in Taebaek area, Kangwon. It seems that the subsidence in study area is closely related to mining activities because the most of subsiding areas are well matched with mining areas. The subsidence at Kyungdong mine shows continuous and fast velocity in about 2 × 2 km area. Therefore the further analysis and the effort to prevent disaster are required in this area.

Keywords subsidence, mine, SAR, SBAS, ALOS

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

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