generally, alluvial basins of arid and semiarid zones are the places with excessive groundwater withdrawal, and also they have a high potential for land subsidence. excessive groundwater withdrawals have caused severe land subsidence in tehran, iran. at present, the maximum land subsidence rate is 36 cm/year, covering an area of nearly 530 km2. in the 2000s, as a result of economic and populati...

The Ms8.0 Wenchuan earthquake occurred on May 12, 2008 in Wenchuan County, Sichuan Province, China. The devastating event caused a significant surface rupture and deformation in a large geographical area. This study intends to investigate the co-seismic surface deformations due to the main shock by integrating observations from interferometric synthetic aperture radar (InSAR) and global positio...

This paper deals with some aspects of thematic mapping using ERS-Envisat Tandem (EET) cross-interferometry (CInSAR). The long baseline of EET CInSAR and the short temporal baseline are in theory suitable for establishing a certain sensitivity of coherence and InSAR phase upon vegetation parameters. Here we show signatures of coherence and InSAR phase for maize fields in Switzerland, and clear-c...

Interferometric synthetic aperture radar (InSAR) has provided a new imaging geodesy technique to measure the deformation of volcanoes at tens-of-meter horizontal resolution with centimeter to subcentimeter vertical precision. The two-dimensional surface deformation data enables the construction of detailed numerical models allowing the study of magmatic and tectonic processes beneath volcanoes....

Interferometric Synthetic Aperture Radar (InSAR) exploits the phase difference between two complex radar signals for extracting information about the earth surface. Some significant application fields concerned by InSAR techniques are Digital ElevationModel (DEM) generation (Graham, 1974), geophysical hazard analysis (Massonet & Feigl, 1998), desertification (Bodart et al., 2009), deforestation...

This paper addresses a question often asked by industry: can radar interferometry (or InSAR or IFSAR) deliver services on a commercial and/or operational basis? To answer this question two systems based on InSAR for digital elevation model (DEM) generation are considered. One commercial system is the GeoSAR Xand P-band radar aerial mapping system from EarthData. The X-band can deliver digital s...

Interferometric Synthetic Aperture Radar (InSAR) capability to detect slow deformation over terrain areas is limited by temporal decorrelation, geometric decorrelation and atmospheric artefacts. Multitemporal InSAR methods such as Persistent Scatterer (PS-InSAR) and Small Baseline Subset (SBAS) have been developed to deal with various aspects of decorrelation and atmospheric problems affecting ...

Considering the limitations related to the landslide monitoring by Interferometric Synthetic Aperture Radar (InSAR) technique, the method of integration of Globe Positioning System (GPS) with Corner Reflector Interferometric SAR (CR-InSAR) techniques is proposed in this paper. Firstly, deformation in radar line-of-slight (LOS) direction is optimized by introducing the GPS-measured height and at...

Interferometric Synthetic Aperture Radar (InSAR) is a powerful technology for observing the Earth surface, especially for mapping the Earth's topography and deformations. InSAR measurements are however often significantly affected by the atmosphere as the radar signals propagate through the atmosphere whose state varies both in space and in time. Great efforts have been made in recent years to ...

The local distribution of water vapour in the urban area of Rome has been studied using both a high resolution mesoscale model (MM5) and Earth Remote Sensing-1 (ERS-1) satellite radar data. Interferometric Synthetic Aperture Radar (InSAR) techniques, after the removal of all other geometric effects, estimate excess path length variation between two different SAR acquisitions (Atmospheric Phase ...