The InSAR Scientific Computing Environment 3.0: A Flexible Framework for NISAR Operational and User-Led Science Processing

Rosen, P. A.; Gurrola, E. M.; Agram, P. S.; Cohen, Joshua; Lavalle, Marco; Riel, Bryan; Fattahi, H.; Aivazis, M.; Simons, M.; Buckley, S.

doi:10.1109/igarss.2018.8517504

Cited by 55 publications

(45 citation statements)

References 8 publications

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“…The ALOS‐2 SAR data acquired from December 2, 2018 to January 12, 2020 were processed at the Jet Propulsion Laboratory (JPL) using the InSAR Scientific Computing Environment (ISCE) software (Rosen et al., 2018). The Sentinel 1A/B SAR data covering the periods between October 19, 2014 and January 11, 2020 were processed through JPL’s Advanced Rapid Imaging and Analysis (ARIA) Project (Bekaert et al., 2019) based on nearest three acquisitions (i.e., N = 3), leading to temporal baselines of up to 36 days over Taal.…”

Section: Methodsmentioning

confidence: 99%

The 2020 Eruption and Large Lateral Dike Emplacement at Taal Volcano, Philippines: Insights From Satellite Radar Data

Bato

Lundgren

Pinel

et al. 2021

Geophysical Research Letters

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On January 12, 2020, Taal volcano, Philippines, erupted after 43 years of repose, affecting more than 500,000 people. Using interferometric synthetic aperture radar (InSAR) data, we present the pre‐ to post‐eruption analyses of the deformation of Taal. We find that: (1) prior to eruption, the volcano experienced long‐term deflation followed by short‐term inflation, reflecting the depressurization‐pressurization of its ∼5 km depth magma reservoir; (2) during the eruption, the magma reservoir lost a volume of 0.531 ± 0.004 km3 while a 0.643 ± 0.001 km3 lateral dike was emplaced; and (3) post‐eruption analyses reveal that the magma reservoir started recovery approximately 3 weeks after the main eruptive phase. We propose a conceptual analysis explaining the eruption and address why, despite the large volume of magma emplaced, the dike remained at depth. We also report the unique and significant contribution of InSAR data during the peak of the crisis.

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Section: Methodsmentioning

confidence: 99%

The 2020 Eruption and Large Lateral Dike Emplacement at Taal Volcano, Philippines: Insights From Satellite Radar Data

Bato

Lundgren

Pinel

et al. 2021

Geophysical Research Letters

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“…The Sentinel-1 satellite mission is a constellation of two C-band satellites Sentinel-1A (launched 2014) and Sentinel-1B (launched 2016) developed, launched, and operated by European Space Agency (ESA), as part of the European Union Copernicus space program. Sentinel-1 images were obtained in single look complex (SLC) format from the ESA and processed with the JPL/Caltech InSAR ISCE software (Rosen et al, 2018). We rely on Sentinel-1 precise orbits and a 3 arc-sec digital elevation model from the Shuttle Radar Topography Mission (SRTM; Farr et al, 2007) to geocode, coregister the SLC images, and remove topographic phase artifacts.…”

Section: Differential Interferometric Synthetic Aperture Radarmentioning

confidence: 99%

Geodetic Source Modeling of the 2019 M_w 6.3 Durrës, Albania, Earthquake: Partial Rupture of a Blind Reverse Fault

Govorčin

Wdowinski

Matoš

et al. 2020

Geophysical Research Letters

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We address geometric and kinematic properties of the M w 6.3 26 November 2019 Durrës earthquake, the strongest earthquake in Albania in the past 40 years. Using coseismic surface displacements from Sentinel-1 Differential Interferometric Synthetic Aperture Radar (DInSAR) and nearby Global Navigational Satellite System (GNSS) stations, we invert for the geometry and slip of the causative fault. We find that both a steep SW-dipping fault (dip 71°) and a shallow NE-dipping fault (dip 15°) can fit the data equally well. However, the slip on the SW-dipping fault occurs at depths 11-23 km, similar to the depths of the mainshock and aftershock seismicity, and thus, we prefer that model. The location of our preferred fault plane correlates with the mapped SW-dipping backthrust, the Vore fault. The fault rupture did not reach the surface, which implies that an updip stress propagation onto the unruptured shallow portion of the Vore fault and its secondary structures pose an increased seismic hazard for cities in Albania, including the capital, Tirana.

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“…We use InSAR data from the COSMO‐SkyMED (CSK), RADARSAT‐2 (RS2), Sentinel‐1 (S1), and ALOS‐2 missions to produce time series and differential interferograms that span the complete inflation events (Figures , and S1–S3; Table ). These data sets were processed with standard algorithms described in detail in the supporting information (Agram et al, ; Chen and Zebker, ; Delgado et al, ; Farr et al, ; Fattahi et al, ; Fattahi and Amelung, ; Finnegan et al, ; Goldstein and Werner, ; Lopez‐Quiroz et al, ; Prats‐Iraola et al, ; Remy et al, ; Rosen et al, ; Samsonov, ; Sansosti et al, ; Yague‐Martinez et al, ; Zebker et al, ).. The differential interferograms calculated for every satellite orbit show ∼12 cm of uplift between June 2016 and February 2017 (Figures c to i), with a mean velocity of ∼23 cm/year (Figure ), in agreement with an independent ALOS‐2 ScanSAR time series (Euillades et al, ).…”

Section: Insar Data and 2016–2018 Ground Deformationmentioning

confidence: 99%

Renewed Posteruptive Uplift Following the 2011–2012 Rhyolitic Eruption of Cordón Caulle (Southern Andes, Chile): Evidence for Transient Episodes of Magma Reservoir Recharge During 2012–2018

et al. 2018

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The VEI 4 rhyolitic eruption of Cordón Caulle volcano in 2011–2012 was immediately followed by ∼0.77 m of exponentially decaying uplift during 2012–2015. In this study, we present evidence of additional transient pulses of inflation with interferometric synthetic aperture radar (InSAR) time series during 2016–2018. We also assess whether the 2012–2015 uplift can be explained by viscoelastic relaxation or not. InSAR detected ∼12 cm of uplift during 2016–2017 and ∼5 cm during 2017–2018. The three inflation episodes have very similar spatial scales and can be modeled with the same inflating sill (z ∼ 6 km), but their time evolution is significantly different. Numerical models of a pressurized reservoir surrounded by a viscoelastic shell do not have a better fit than a magma injection model to the 2012–2015 InSAR time series, indicating that magma injection is the most likely mechanism to explain this uplift signal. The spatial similarities of the three pulses suggest that they are produced by episodic magma injection. These magma injection pulses provide the heat to remobilize the crystal mush beneath the volcano on timescales of a few months, but the end of the uplift is not predicted by existing models. None of these uplift pulses were related to abnormal seismicity, and we speculate that they are mostly aseismic because they caused stresses of lower magnitude than the coeruptive stresses. The meter scale displacement observed at Cordón Caulle between 2007 and 2018 suggests that the volcano undergoes episodic cycles of inflation like those observed in silicic calderas.

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The InSAR Scientific Computing Environment 3.0: A Flexible Framework for NISAR Operational and User-Led Science Processing

Cited by 55 publications

References 8 publications

The 2020 Eruption and Large Lateral Dike Emplacement at Taal Volcano, Philippines: Insights From Satellite Radar Data

The 2020 Eruption and Large Lateral Dike Emplacement at Taal Volcano, Philippines: Insights From Satellite Radar Data

Geodetic Source Modeling of the 2019 M_w 6.3 Durrës, Albania, Earthquake: Partial Rupture of a Blind Reverse Fault

Renewed Posteruptive Uplift Following the 2011–2012 Rhyolitic Eruption of Cordón Caulle (Southern Andes, Chile): Evidence for Transient Episodes of Magma Reservoir Recharge During 2012–2018

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The InSAR Scientific Computing Environment 3.0: A Flexible Framework for NISAR Operational and User-Led Science Processing

Cited by 55 publications

References 8 publications

The 2020 Eruption and Large Lateral Dike Emplacement at Taal Volcano, Philippines: Insights From Satellite Radar Data

The 2020 Eruption and Large Lateral Dike Emplacement at Taal Volcano, Philippines: Insights From Satellite Radar Data

Geodetic Source Modeling of the 2019 Mw 6.3 Durrës, Albania, Earthquake: Partial Rupture of a Blind Reverse Fault

Renewed Posteruptive Uplift Following the 2011–2012 Rhyolitic Eruption of Cordón Caulle (Southern Andes, Chile): Evidence for Transient Episodes of Magma Reservoir Recharge During 2012–2018

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Geodetic Source Modeling of the 2019 M_w 6.3 Durrës, Albania, Earthquake: Partial Rupture of a Blind Reverse Fault