20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques

Brunori, Carlo Alberto; Bignami, Christian; Stramondo, Salvatore; Bustos, Emilce

doi:10.1016/j.jag.2012.10.003

Cited by 29 publications

(26 citation statements)

References 38 publications

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“…Baekdu. After the initial research by Zebker and Goldstein [6], volcano monitoring with Synthetic Aperture Radar (SAR) data has been conducted by a number of researchers in subsequent years [7][8][9][10][11][12]. As DInSAR techniques have commonly been considered as one of the most favourable and effective remote-sensing solutions for monitoring of volcanic activities [13,14], we here conducted a DInSAR survey over Mt.…”

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confidence: 99%

Investigation of Potential Volcanic Risk from Mt. Baekdu by DInSAR Time Series Analysis and Atmospheric Correction

et al. 2017

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Abstract:Mt. Baekdu is a volcano near the North Korea-Chinese border that experienced a few destructive eruptions over the course of its history, including the well-known 1702 A.D eruption. However, signals of unrest, including seismic activity, gas emission and intense geothermal activity, have been occurring with increasing frequency over the last few years. Due to its close vicinity to a densely populated area and the high magnitude of historical volcanic eruptions, its potential for destructive volcanic activity has drawn wide public attention. However, direct field surveying in the area is limited due to logistic challenges. In order to compensate for the limited coverage of ground observations, comprehensive measurements using remote sensing techniques are required. Among these techniques, Differential Interferometric SAR (DInSAR) analysis is the most effective method for monitoring surface deformation and is employed in this study. Through advanced atmospheric error correction and time series analysis, the accuracy of the detected displacements was improved. As a result, clear uplift up to 20 mm/year was identified around Mt. Baekdu and was further used to estimate the possible deformation source, which is considered as a consequence of magma and fault interaction. Since the method for tracing deformation was proved feasible, continuous DInSAR monitoring employing upcoming SAR missions and advanced error regulation algorithms will be of great value in monitoring comprehensive surface deformation over Mt. Baekdu and in general world-wide active volcanoes.

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confidence: 99%

Investigation of Potential Volcanic Risk from Mt. Baekdu by DInSAR Time Series Analysis and Atmospheric Correction

et al. 2017

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“…The uplift-subsidence patterns identified at the Ayaz-Akhtarma show some similarities to those observed in the Yellowstone caldera, where the area affected by subsidence could correspond to a deflation zone and the brittle fracturing/faulting accommodates the differential volumetric variations [28]. Similarly, reference [29] identified deformation patterns of the Cerro Blanco/Robledo Caldera during a resting phase period. There, the caldera subsides with decreasing velocity while a positive velocity field is detected in the northwestern part of the system outside the caldera.…”

Section: Discussionmentioning

confidence: 54%

DInSAR analysis reveals bulging of Azerbaijan mud volcano edifices before an eruption

Antonielli¹,

Monserrat²,

Bonini³

et al. 2015

Proceedings of Fringe 2015: Advances in the Science and Applications of SAR Interferometry and Sentinel-1 InSAR Workshop

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Mud volcanism consists in the surface extrusion of gases, saline waters and mud breccias, which produce conical edifices of various sizes with morphology similar to that of magmatic volcanoes. In this work, DInSAR technique has been used to investigate the ground deformation related to the activity of Azerbaijan mud volcanoes during the period October 2003-November 2005. This work focuses on two important deformation events at the Ayaz-Akhtarma and Khara-Zira mud volcanoes. The ground deformations at mud volcanoes are generally originated by fluid pressure and volume variations in the reservoir. The observed deformation pattern is characterized by pre-eruptive inflation that reaches a cumulative value of up to 20 cm at Ayaz-Akhtarma in about two years. Similar pre-eruptive bulging has been observed at magmatic volcanoes, where uplift is typically associated with magma intrusion. We conclude that mud and magmatic volcanoes display some similarities in the behavior of ground deformation during pre-eruptive stages.

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“…Spatio-temporal signal analysis based on this network of coherent radar targets allow for an accurate estimation of the evolution of the ground displacements by separating it from the other contributions related to atmosphere, topography and noise. Over the last decade geoscientists have exploited PSI-based information to resolve the spatial distribution and temporal evolution of displacements related to wide range of geo-hazards, such as landslide [12,13] , subsidence [1,14] , tectonics [15,16] , and volcanic activity [17,18] .…”

Section: The Terrafirma Projectmentioning

confidence: 99%

Subsidence mapping, characterization, and modeling: the ESA-GMES Terrafirma services

et al. 2015

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Land subsidence is a common natural hazard striking extensive areas worldwide that can be triggered by geological and/or anthropogenic factors. In many cases, subsidence affects urbanized areas and causes remarkable economic loss. Adopted policies and solutions for land subsidence management can be various, but despite this variability, where mitigation methods have to be put into practice, the detailed mapping, characterization and simulation of subsidence have to precede their design and implementation. In the framework of the Terrafirma Project (www.terrafirma.eu.com), the exploitation of Persistent Scatterer Interferometry (PSI) for subsidence analysis has been promoted. Satellite interferometry, thanks to its wide spatial coverage and its millimeter accuracy, is ideally suited for the measurement of the spatial extent and magnitude of surface deformations associated with subsidence phenomena. Three validated case studies, where subsidence is caused by different factors, are presented here: the wide area of Rome (Italy), the Gioia Tauro plain (Italy) and the Kalochori village (Greece). These case studies have been selected with the aim of showing the main activities that must be covered and performed when dealing with geohazard investigations, i.e., mapping, monitoring and modeling. Particularly, data from ERS1/2, Envisat and Radarsat satellites have been exploited to map ground deformation in the area of Rome and to monitor the ground subsidence in the Gioia Tauro plain. Due to the large availability of geological and geotechnical data, the area of Kalochori village has been selected to model the land subsidence by applying Finite Element simulation. Results of the simulation have been validated with PSI techniques.

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20 years of active deformation on volcano caldera: Joint analysis of InSAR and AInSAR techniques

Cited by 29 publications

References 38 publications

Investigation of Potential Volcanic Risk from Mt. Baekdu by DInSAR Time Series Analysis and Atmospheric Correction

Investigation of Potential Volcanic Risk from Mt. Baekdu by DInSAR Time Series Analysis and Atmospheric Correction

DInSAR analysis reveals bulging of Azerbaijan mud volcano edifices before an eruption

Subsidence mapping, characterization, and modeling: the ESA-GMES Terrafirma services

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