Results 61 to 70 of about 15,888 (248)
A new method to invert InSAR data to resolve stress changes on a fracture embedded in a 3D heterogeneous crust [PDF]
arXiv, 2022 We present a new method to invert variable stress changes of fractures from InSAR ground displacements. Fractures can be either faults or magma intrusions, embeded in a 3D heterogeneous crust with prominent topographies. The method is based on a fictituous domain approach using a finite element discretization of XFEM type.
arxiv
Structural Concrete, EarlyView.Abstract Satellite‐based Synthetic Aperture Radar Interferometry (InSAR) represents a promising supplement to traditional Structural Health Monitoring (SHM) methods, offering a non‐invasive solution that eliminates the need for sensor installations and provides extensive spatial coverage.
Pier Francesco Giordano +7 more
wiley +1 more source
Bayesian Poroelastic Aquifer Characterization from InSAR Surface Deformation Data. Part I: Maximum A Posteriori Estimate [PDF]
, 2020 Characterizing the properties of groundwater aquifers is essential for predicting aquifer response and managing groundwater resources. In this work, we develop a high-dimensional scalable Bayesian inversion framework governed by a three-dimensional quasi-static linear poroelastic model to characterize lateral permeability variations in groundwater ...
arxiv +1 more source
Journal of Rawalpindi Medical College, 2016 Background:To determine the frequency of recurrence of superficial tumours on first check cystoscopy i.e. 3 months after complete resection of tumour. Methods: In this descriptive study adult male and female patients (n=41) presenting with a superficial ...
Insar Hussain Malik
doaj
Zhejiang Daxue xuebao. Lixue ban, 2008 选择合适的滤波方法对InSar干涉相位图进行滤波处理是提高干涉图质量的关键技术环节.系统研究了圆周期均值滤波、圆周期中值滤波、加权圆周期滤波和基于梯度的自适应滤波方法，利用ERS-1/2数据进行了对比实验，并对各方法的效果进行了评价.结果表明，基于梯度的自适应滤波方法可以取得稳定效果，而梯度的自适应滤波与圆周期中值滤波组合效果更加显著.
ZHANGDeng-rong(张登荣) +5 more
doaj +1 more source
A Covariance-Based Approach to Merging InSAR and GNSS Displacement Rate Measurements
Remote Sensing, 2020 This paper deals with the integration of deformation rates derived from Synthetic Aperture Radar Interferometry (InSAR) and Global Navigation Satellite System (GNSS) data. The proposed approach relies on knowledge of the variance/covariance of both InSAR
Alessandro Parizzi +2 more
doaj +1 more source
Normalizing flow-based deep variational Bayesian network for seismic multi-hazards and impacts estimation from InSAR imagery [PDF]
arXiv, 2023 Onsite disasters like earthquakes can trigger cascading hazards and impacts, such as landslides and infrastructure damage, leading to catastrophic losses; thus, rapid and accurate estimates are crucial for timely and effective post-disaster responses. Interferometric Synthetic aperture radar (InSAR) data is important in providing high-resolution onsite
arxiv
Remote Sensing, 2020 For the past five years, the 2-satellite Sentinel-1 constellation has provided abundant and useful Synthetic Aperture Radar (SAR) data, which have the potential to reveal global ground surface deformation at high spatial and temporal resolutions. However,
Yu Morishita +5 more
doaj +1 more source
Dizhi lixue xuebao, 2022 Active geological disasters induced by earthquakes, rainfalls and human engineering activities occur frequently in the Loess Plateau. However, there is a lack of systematic understanding of the development and distribution of active geological disasters ...
YAO Chuangchuang +4 more
doaj +1 more source
GIScience & Remote Sensing, 2017 Land subsidence due to underground resources exploitation is a well-known problem that affects many cities in the world, especially the ones located along the coastal areas where the combined effect of subsidence and sea level rise increases the flooding
Simone Fiaschi +10 more
doaj +1 more source