Browsing NTNU Open by Author "Shamshiri, Roghayeh"
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Deformation analysis of the Trondheim city from SAR Interferometry
Shamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi (Peer reviewed; Journal article, 2016)Trondheim is a coastal city in central Norway, which lies on the south shore of the Trondheim Fjord. Because of the river Nidelva, which runs through the city, floods, erosion and landslides, are occurring in and along the ... -
Efficient Ground Surface Displacement Monitoring Using Sentinel-1 Data: Integrating Distributed Scatterers (DS) Identified Using Two-Sample t-Test with Persistent Scatterers (PS)
Shamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi; Andy, Hooper (Journal article; Peer reviewed, 2018)Combining persistent scatterers (PS) and distributed scatterers (DS) is important for effective displacement monitoring using time-series of SAR data. However, for large stacks of synthetic aperture radar (SAR) data, the ... -
Improving tropospheric corrections on large-scale Sentinel-1 interferogramsusing a machine learning approach for integration with GNSS-derived zenithtotal delay (ZTD)
Shamshiri, Roghayeh; Motagh, Mahdi; Nahavandchi, Hossein; Haghshenas, Mahmud; Hoseini, Mostafa (Peer reviewed; Journal article, 2020)Sentinel-1 mission with its wide spatial coverage (250 km), short revisit time (6 days), and rapid data dissemination opened new perspectives for large-scale interferometric synthetic aperture radar (InSAR) analysis. ... -
Multi-sensor InSAR analysis of surface displacement over coastal urban city of Trondheim
Shamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi; Haghshenas, Mahmud (Peer reviewed; Journal article, 2016)In this study, we present maps of ground surface displacement of the coastal urban city of Trondheim in central Norway using observations from interferometry synthetic aperture radar (InSAR). We used 98 SAR images including ... -
Multi-temporal interferometry (MTI) techniques for ground deformation mapping using Sentinel-1 SAR data
Shamshiri, Roghayeh (Doctoral theses at NTNU;2019:153, Doctoral thesis, 2019)The multi-temporal interferometry (MTI) techniques, such as persistent scatterer interferometric synthetic aperture radar (PS-InSAR) and small baseline (SBAS) have proved to be powerful geodetic tools to measure deformations ... -
Persistent Scatterer Analysis Using Dual-Polarization Sentinel-1 Data: Contribution From VH Channel
Shamshiri, Roghayeh; Nahavandchi, Hossein; Motagh, Mahdi (Journal article; Peer reviewed, 2018)The regular acquisition and relatively short revisit time of Sentinel-1 satellite improve the capability of a persistent scatterer interferometric synthetic aperture radar (PS-InSAR) as a suitable geodetic method of choice ... -
Quantifying groundwater exploitation induced subsidence in the Rafsanjan Plain, southeastern Iran, using InSAR time-series and in situ measurements
Motagh, Mahdi; Shamshiri, Roghayeh; Haghshenas-Haghighi, Mahmud; Wetzel, Hans-Ulrich; Akbari, Bahman; Nahavandchi, Hossein; Roessner, Sigrid; Arabi, Siavash (Journal article, 2017)Decades of groundwater overexploitation for agriculture and industrial development have resulted in substantial land subsidence in the Rafsanjan plain of southeastern Iran. This work presents the results of an InSAR time ... -
Seasonal variation analysis of Greenland ice mass time-series
Shamshiri, Roghayeh; Nahavandchi, Hossein; Joodaki, Gholamreza (Journal article; Peer reviewed, 2017)We derive the mass balance of Greenland ice sheet from the Gravity Recovery and Climate Experiment (GRACE) for the period January 2003–October 2014. We have found an ice mass loss with peak amplitude of −15 cm/yr in the ... -
Seasonal variation analysis of Greenland ice mass time-series
Shamshiri, Roghayeh; Nahavandchi, Hossein; Joodaki, Gholamreza (Journal article, 2018)We derive the mass balance of Greenland ice sheet from the gravity recovery and climate experiment (GRACE) for the period January 2003 to October 2014. We find an ice mass loss with peak amplitude of -15 cm/year in the ...