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Fenwei basin, China, composed by several sub-basins, has been suffering\udsevere geo-hazards in last 60 years, including large scale land subsidence\udand small scale ground fissure, which caused serious infrastructure damages\udand property losses. In this paper, we apply different InSAR techniques with\uddifferent SAR data to monitor these hazards. Firstly, combined small\udbaseline subset (SBAS) InSAR method and persistent scatterers (PS) InSAR\udmethod is used to multi-track Envisat ASAR data to retrieve the large scale\udland subsidence covering entire Fenwei basin, from which different land\udsubsidence magnitudes are analyzed of different sub-basins. Secondly,\udPS-InSAR method is used to monitor the small scale ground fissure\uddeformation in Yuncheng basin, where different spatial deformation gradient\udcan be clearly discovered. Lastly, different track SAR data are contributed\udto retrieve two-dimensional deformation in both land subsidence and ground\udfissure region, Xi'an, China, which can be benefitial to explain the\udoccurrence of ground fissure and the correlation between land subsidence and\udground fissure

Different scale land subsidence and ground fissure monitoring with multiple InSAR techniques over Fenwei basin, China