نتایج جستجو برای: and interferometric synthetic aperture radar insar technique of the above methods

تعداد نتایج: 25073783  

Journal: :Geophysical Research Letters 2021

Interferometric Synthetic Aperture Radar (InSAR) data are increasingly being used to map interseismic deformation with ascending and descending-orbit observations allowing for resolving the near-east vertical displacement components. The north component has, however, been difficult retrieve due limited sensitivity of standard InSAR in that direction. Here, we address this problem by using time-...

2010
Chang-Wook Lee Zhong Lu Hyung-Sup Jung Joong-Sun Won Daniel Dzurisin

Augustine Volcano is an active stratovolcano located in southwestern Cook Inlet, about 280 kilometers southwest of Anchorage, Alaska. The volcano produced six significant explosive eruptions between 1812 and 1986. Augustine eruptions typically have an explosive onset followed by dome building. The most recent eruption began on January 11, 2006. We applied the small baseline subset (SBAS) interf...

Mossaiby , Farshid, Yazdanparast , Maryam, Voosoghi , Behzad ,

Considering the importance of predicting volcano eruption and the large number of volcanic peaks across the world, having enough researches in this field is vital. Based on geodetic researches, surface deformation of the earth in the form of uplift or subsidence in the volcanic region, is an indicator of the  magma's movement respectively towards the crater or the exit from the tank around. In...

2010
E. Pichelli R. Ferretti D. Cimini D. Perissin M. Montopoli F. S. Marzano

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 ...

2012
Jennifer Weston Ana M.G. Ferreira Gareth J. Funning

a r t i c l e i n f o Robust earthquake source parameters (e.g., location, seismic moment, fault geometry) are essential for reliable seismic hazard assessment and the investigation of large-scale tectonics. They are routinely estimated using a variety of data and techniques, such as seismic data and, more recently, Interferometric Synthetic Aperture Radar (InSAR). Comparisons between these two...

2004
MATTHEW E. PRITCHARD Matthew E. Pritchard

Satellite Interferometric Synthetic Aperture Radar (InSAR) permits both synoptic and detailed surveys of mag-matic activity in volcanic arcs. To illustrate this capability, we summarize here the results of an extended study of inferred magmatic activity in the central Figure 1. Interferometric coherence (a measure of the quality of the Interferometric Synthetic Aperture Radar, or InSAR, measure...

2005
W. Y. Lau D. Meng

In the process Interferometric Synthetic Aperture Radar (InSAR) derived Digital Elevation Models (DEMs), coherence enhances the raw interferograms in order to achieve a good estimation of the difference in the optical paths related to topography. Furthermore, it is an important parameter qualifying the accuracy of the interferometric measurements. The aim of this study is to examine the effect ...

2007
John Dawson Paul Tregoning

[1] We assessed the accuracy of earthquake source parameters inverted from simulated Interferometric Synthetic Aperture Radar (InSAR) data. Using focal mechanisms of Australian earthquakes (1959 to the present), we simulated synthetic two-pass InSAR observations with realistic spatial noise derived from the characteristics of actual ERS-2 and ENVISAT InSAR data observed over Australia. The prec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1389

in reality, most structures involved in geotechnical engineering are three dimensional in nature, and although in many, plane strain or axisymmetric approximations are reasonable, there are some, for which 3-d treatment is required. the quantity of data, and the size of the various vectors and matrices involved in such analysis, increase dramatically. this has sever implications for computer r...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه شیمی و مهندسی شیمی ایران - پژوهشکده شیمی تجزیه و معدنی 1390

hydrochlorothiazide (hct) is a diuretic agent which is shown to be effective in the treatment of hypertension. literature reports have demonstrated that urinary excretion data may be used to assess the bioavailability of various formulations containing this thiazide. also hct consumption by the athletes is one of the drugs which should be regulated by world anti-doping agency (wada), because of...

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