ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 Copernicus Publications Göttingen, Germany 10.5194/isprs-archives-XLII-3-2341-2018 TWO-DIMENSIONAL LOESS LANDSLIDE DEFORMATION MONITORING WITH MULTIDIMENSIONAL SMALL BASELINE SUBSET (MSBAS) – A CASE STUDY OF XINYUAN No.2 LANDSLIDE, GANSU, CHINA Zhao C. Y. https://orcid.org/0000-0002-5730-9602 1 2 3 Liu X. J. 1 Zhu W. 1 Zhu W. F. 1 School of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, China State Key Laboratory of Geo-Information Engineering, Xi’an, 710054, China National administration of surveying, mapping and geo-information, Engineering research center of national geographic conditions monitoring, Xi’an, 710054, China 30 04 2018 XLII-3 2341 2345 Copyright: © 2018 C. Y. Zhao et al. 2018 This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/ This article is available from https://isprs-archives.copernicus.org/articles/XLII-3/2341/2018/isprs-archives-XLII-3-2341-2018.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XLII-3/2341/2018/isprs-archives-XLII-3-2341-2018.pdf

The deformation monitoring of active landslides is of great importance for the safety of human lives and properties. And twodimensional deformation result can give us more thoughts on the landslide type and deformation process. In this study, multidimensional small baseline subsets (MSBAS) technique is introduced and tested to compute two-dimensional deformation rate and time series for both east-west and vertical deformation of Xinyuan No.2 landslide by simultaneously processing ascending and descending TerraSAR-X data acquired from January 2016 to November 2016. Results show not only the spatiotemporal characteristics of this landslides, but the retrogressive loess landslide failure mode is revealed for the first time with the two-dimensional deformation.