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Assessing the Impact of Building Volume on Land Subsidence in the Central Business District of Beijing with SAR Tomography

Canadian journal of remote sensing, 2017-03, Vol.43 (2), p.177-193 [Tạp chí có phản biện]

Copyright © CASI 2017 ;ISSN: 0703-8992 ;EISSN: 1712-7971 ;DOI: 10.1080/07038992.2017.1291335

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  • Nhan đề:
    Assessing the Impact of Building Volume on Land Subsidence in the Central Business District of Beijing with SAR Tomography
  • Tác giả: Jiao, Shuai ; Yu, Jie ; Simic Milas, Anita ; Li, Xiaojuan ; Liu, Limin
  • Là 1 phần của: Canadian journal of remote sensing, 2017-03, Vol.43 (2), p.177-193
  • Mô tả: High-rise buildings in the modern urban setting may have a considerable impact on land subsidence. The process of urbanization in Beijing has been found to be in direct relationship with the land subsidence. The permanent scatterers interferometric aperture radar (PSInSAR) technology is becoming a conventional tool for land subsidence monitoring. Synthetic aperture radar (SAR) tomography, as an extension of PSInSAR technology, allows a full 3D imaging, and is useful to reconstruct 3D urban building maps. In this study, a SAR tomography method "scale-down by L1 norm minimization, model selection, and estimation reconstruction" (SL1MMER) was applied to 33 TerraSAR-X images to retrieve building height. The object-oriented classification method based on the support vector machine was applied on the World View 2 image to extract geometry of building footprints and to aggregate SL1MMER derived building heights for each building. The building footprints and building heights were used to calculate the volume of buildings. The Stanford method for persistent scatterers, a PSInSAR methodology, was used to obtain land subsidence rates. The correlation coefficient between the building volumes and land subsidence showed no positive relationship for buildings that were below a certain volume. However, at local scale, with the increase of the building volumes, the correlation increased. The larger the volume of buildings, the stronger the relationship became. Once the volume of buildings became larger than 3.00 × 10 5 m 3 , the impact of building volume on land subsidence remained stable.
  • Nơi xuất bản: Taylor & Francis
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0703-8992
    EISSN: 1712-7971
    DOI: 10.1080/07038992.2017.1291335
  • Nguồn: DOAJ Directory of Open Access Journals
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