Search Results - "Jónsson, Sigurjón"
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Advanced InSAR Tropospheric Corrections From Global Atmospheric Models that Incorporate Spatial Stochastic Properties of the Troposphere
Published in Journal of geophysical research. Solid earth (01-05-2021)“…Tropospheric delays are still the main error source of satellite‐based Interferometric Synthetic Aperture Radar (InSAR) mapping of Earth’s surface movements…”
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Improved source modelling through combined use of InSAR and GPS under consideration of correlated data errors: application to the June 2000 Kleifarvatn earthquake, Iceland
Published in Geophysical journal international (01-02-2009)“…Simultaneous use of multiple independent data sets can improve constraints on earthquake source-model parameters. However, the ways in which data sets have…”
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3
Post-earthquake ground movements correlated to pore-pressure transients
Published in Nature (London) (10-07-2003)“…Large earthquakes alter the stress in the surrounding crust, leading to triggered earthquakes and aftershocks. A number of time-dependent processes, including…”
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Broad accommodation of rift-related extension recorded by dyke intrusion in Saudi Arabia
Published in Nature geoscience (01-10-2010)“…The extensive harrat lava province of Arabia formed during the past 30 million years in response to Red Sea rifting and mantle upwelling. The area was regarded…”
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Towards a method for forecasting earthquakes in Iceland using changes in groundwater chemistry
Published in Communications earth & environment (06-11-2024)“…An advance has been made towards a method for forecasting earthquakes several months before they occur. The method relies on changes of groundwater chemistry…”
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Discontinuous transtensional rupture during the Mw 7.2 1995 Gulf of Aqaba earthquake
Published in Seismica (20-02-2024)“…The Gulf of Aqaba earthquake occurred on 22 November 1995 in the Northern Red Sea and is the largest instrumentally recorded earthquake in the region to date…”
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The First Network of Ocean Bottom Seismometers in the Red Sea to Investigate the Zabargad Fracture Zone
Published in Seismica (30-04-2024)“…In the last decades, the slow-spreading Red Sea rift has been the objective of several geophysical investigations to study the extension of the oceanic crust,…”
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The 2015 Wolf volcano (Galápagos) eruption studied using Sentinel‐1 and ALOS‐2 data
Published in Geophysical research letters (28-09-2016)“…An energetic eruption started on 25 May 2015 from a circumferential fissure at the summit of Wolf volcano on Isabela Island, western Galápagos. Further…”
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Birth of two volcanic islands in the southern Red Sea
Published in Nature communications (26-05-2015)“…Submarine eruptions that lead to the formation of new volcanic islands are rare and far from being fully understood; only a few such eruptions have been…”
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10
Graben formation and dike arrest during the 2009 Harrat Lunayyir dike intrusion in Saudi Arabia: Insights from InSAR, stress calculations and analog experiments
Published in Journal of geophysical research. Solid earth (01-04-2016)“…Detailed spatial and temporal accounts of propagating dikes from crustal deformation data, including their interplay with faulting, are rare, leaving many…”
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Shortcomings of InSAR for studying megathrust earthquakes: The case of the Mw9.0 Tohoku-Oki earthquake
Published in Geophysical research letters (28-05-2012)“…Interferometric Synthetic Aperture Radar (InSAR) observations are sometimes the only geodetic data of large subduction‐zone earthquakes. However, these data…”
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12
Volcanology: Sunken volcanoes
Published in Nature geoscience (01-08-2013)Get full text
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13
Covariance Estimation for dInSAR Surface Deformation Measurements in the Presence of Anisotropic Atmospheric Noise
Published in IEEE transactions on geoscience and remote sensing (01-04-2010)“…We study anisotropic spatial autocorrelation in differential synthetic aperture radar interferometric (dInSAR) measurements and its impact on geophysical…”
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14
Bayesian Inversion and Quantitative Comparison for Bilaterally Quasi-Symmetric Rupture Processes on a Multi-Segment Fault in the 2021 Mw 7.4 Maduo Earthquake
Published in Geophysical journal international (06-11-2024)“…Summary On May 21st, 2021, the Mw7.4 Maduo earthquake occurred in the southern Qinghai Province, China. This earthquake ruptured approximately 160 km along the…”
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15
Block-like plate movements in eastern Anatolia observed by InSAR
Published in Geophysical research letters (16-01-2014)“…The question whether continental plates deform internally or move as rigid blocks has been debated for several decades. To further address this question, we…”
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Interseismic Deformation From Sentinel‐1 Burst‐Overlap Interferometry: Application to the Southern Dead Sea Fault
Published in Geophysical research letters (28-08-2021)“…Interferometric Synthetic Aperture Radar (InSAR) data are increasingly being used to map interseismic deformation with ascending and descending‐orbit…”
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17
Shortcomings of InSAR for studying megathrust earthquakes: The case of the M w 9.0 Tohoku‐Oki earthquake
Published in Geophysical research letters (28-05-2012)“…Interferometric Synthetic Aperture Radar (InSAR) observations are sometimes the only geodetic data of large subduction‐zone earthquakes. However, these data…”
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18
Unloading Uplift Caused by Surface Processes in New Zealand's Southern Alps
Published in Geophysical research letters (16-08-2024)“…The Southern Alps experiences rapid bedrock uplift and intense surface processes like erosion and deglaciation. We quantify how the erosion and deglaciation…”
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Tensile rock mass strength estimated using InSAR
Published in Geophysical research letters (01-11-2012)“…The large‐scale strength of rock is known to be lower than the strength determined from small‐scale samples in the laboratory. However, it is not well known…”
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20
Improved SAR Amplitude Image Offset Measurements for Deriving Three-Dimensional Coseismic Displacements
Published in IEEE journal of selected topics in applied earth observations and remote sensing (01-07-2015)“…Offsets of synthetic aperture radar (SAR) images have played an important role in deriving complete three-dimensional (3-D) surface displacement fields in…”
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