PROJECTS

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The natural hazards including earthquakes, land subsidence, and landslides threaten the people live in around the world in particular Iran and Turkey. In order to mitigate the effects of these phenomena mostly accompanied by land surface deformation, we take advantage of Interferometric Synthetic Aperture Radar(InSAR) time series as geodetic imaging techniques in order to map deformation. The main goal of this research project is to monitor land subsidence due to groundwater overdraft and seismic deformation phenomena by measuring the Earth surface deformation in Northwest of Iran and Konya basin in Turkey. Among the geodetic techniques, SAR Interferometric (InSAR) has demonstrated its ability to provide precise measurements of land surface deformation over large areas and at high spatial resolution. InSAR method takes advantage of two complex radar data including amplitude as well as the phase information in order to estimate the deformation. Conventional InSAR time series analysis is limited by spatial and temporal decorrelation as well as atmospheric noise (Zebker and Villasenor, 1992 Hooper et al., 2004 Hanssen, 2001). If the temporal decorrelation is negligible in an area and the deformation signal is good enough to be detected, the conventional interferometry will be used. However, this may result in incorrect estimation of deformation patterns if the temporal and spatial decorrelation effect is significant and the deformation signal is too small that is masked by atmospheric and residual topographic effect. To overcome the problem of temporal decorrelation , We apply Delft Persistent Scatterer Interferometry (DePSI) (Kampes, 2005 and Kampes, 2006) and Stanford Method for Persistent Scatterers (StaMPS) (Hooper et al., 2004 and Hooper, 2008).Moreover, in order to monitor the area where coherence is very low ,the rate of deformation is high,we apply hybrid method of Persistent Scatterers (StaMPS)(Dehghani et al. 2009) and Improved persistence scatter method (Sadeghi et al. 2013) to map better deformation spatially and temporally.Also ,we reduce the Atmospheric noise effects on the deformation rate using remote sensing data and meteorological model. We use inverse model according to the estimated surface displacement field to estimate groundwater reservoir properties and fault parameters. The InSAR-derived deformation will be interpreted using other sources of information such as geology maps.

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Proje ile ilgili açıklama girilmemiştir.

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Deformasyon Ölçme GPS

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GPS

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Afet Yönetimi

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Ölçme Hesap Nivelman

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Geçki Tasrımı Geçiş Eğrisi

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CBS Deprem Hasar Tahmin

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Ölçme Röleve

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Deformasyon Ölçme GPS

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Afet Yönetimi CBS Standart Veri

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GPS Tektonik

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Deformasyon Ölçme GPS

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Afet Yönetimi Eğitim

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Ölçme Röleve

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Ölçme Hesap

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GPS

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Deformasyon

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Ölçme Hesap Çizim

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Ölçme Röleve

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Deformasyon Ölçme GPS

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Deformasyon GPS

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Afet Yönetimiİtfaiye

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Ölçme Röleve

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Deformasyon Ölçme GPS