[J03-3] Deformation of the lithosphere: Integrating seismology and geodesy through modelling III

[J03-3-04] Performance of 3-D Surface Displacement Measurement from Sub-pixel Correlation of Optical Imagery and InSAR: a Multi-Sensor Approach

^○Dewan Mohammad Enamul Haque¹, Yasser Magsoudi Mehrani², ASM Maksud Kamal¹ (1.Department of Disaster Science and Management, University of Dhaka, Dhaka, Bangladesh, 2.Faculty of Geodesy and Geomatics Engineering, K.N.Toosi University of Technology,Tehran, Iran)

The main objective of this research is to calculate the three-dimensional (3-D) surface displacement fields using optical image sub-pixel correlation and interferometric synthetic aperture radar (InSAR) technique to investigate the events: Gorkha (2015), Kashmir (2005), and Duzce (1999). To help reach the goal, imagery from multiple sensors e.g. ASTER, SPOT, Sentinel, ERS and ENVISAT were employed. Earthquake surface displacement in the satellite line of sight (LOS) direction is measured by InSAR analysis and the optical image sub-pixel correlation technique provided the horizontal surface displacement components. The vertical component of surface displacement was derived from these horizontal and LOS components. The performance of this 3-D surface displacement measurement approach was validated by field and GPS measurements.