Volcanic spreading of Vesuvius, a new paradigm for interpreting its volcanic activity

Borgia, Andrea

doi:10.1029/2004gl022155

Cited by 92 publications

(68 citation statements)

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“…Results are given at a ground resolution of about 80 m 9 80 m (BERARDINO et al, 2002), and are suited for the investigation of volcanic activity (LUNDGREN et al, 2004;BORGIA et al, 2005;TIZZANI et al, 2007;TRASATTI et al, 2008), active tectonics (LANARI et al, 2004b, subsidence induced by mining and aquifer exploitation (LANARI et al, 2004bGOURMELEN et al, 2007), and slow-moving mass movements (BERARDINO et al, 2003;MANZO et al, 2006;PERRONE et al, 2006;LANARI et al, 2007). More recently, the algorithm was modified to detect and measure deformation at specific local points, e.g., on individual buildings or sections of buildings (LANARI et al, 2004a).…”

Section: Sbas-dinsar Techniquementioning

confidence: 99%

Analysis of Ground Deformation Detected Using the SBAS-DInSAR Technique in Umbria, Central Italy

Guzzetti

Manunta

Ardizzone

et al. 2009

Pure appl. geophys.

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Ground deformation affecting the Umbria region (central Italy) in the 9-year period from 1992 to 2000 was investigated through multi-temporal Differential Synthetic Aperture Radar Interferometry (DInSAR). For the purpose, the Small BAseline Subset (SBAS) technique was adopted, which allows studying the temporal evolution of the detected deformation at two spatial scales: a low-resolution (regional) scale, and a full-resolution (local) scale. For the analysis, SAR data acquired by the European Remote Sensing (ERS-1/2) satellites along ascending and descending orbits were used. The detected deformation was analysed to investigate its relevance to geophysical, geomorphologic, and human-induced processes that may result in hazardous conditions to the population of Umbria. Low-resolution deformation data were used to: (i) determine the amount of displacement caused by the Umbria-Marche earthquake sequence from September 1997 to April 1998 in the Foligno area, (ii) determine the number and percentage of the known landslides that can be monitored by the DInSAR technology in the investigated area, and (iii) identify and measure subsidence induced by exploitation of a confined aquifer in the Valle Umbra. Results indicate that earthquakes moved through the Foligno area westwards up to 3.9 cm and with an uplift reaching 1.7 cm. Intersection in a GIS of the low-resolution deformation maps with a detailed landslide inventory map allowed the determination that the portion of landslides that can be monitored by the SBAS-DInSAR technique in Umbria ranges from 2.7% to 3.4%, and the percentage of the total landslide area ranges from 10.4% to 12.8%. In the Valle Umbra, a dependency was found between the time and the amount of detected ground deformation, and the record of water withdrawal. The full-resolution deformation data were used to investigate the movement of the Ivancich landslide, in the Assisi Municipality. Joint analysis of the spatial and the temporal characteristics of the ground displacement allowed the formulation of a hypothesis on the landslide geometry and deformation pattern. RI Guzzetti, Fausto/G-4404-201

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Section: Sbas-dinsar Techniquementioning

confidence: 99%

Analysis of Ground Deformation Detected Using the SBAS-DInSAR Technique in Umbria, Central Italy

Guzzetti

Manunta

Ardizzone

et al. 2009

Pure appl. geophys.

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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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“…A top volume dominated by a gravitational volcanic spreading that allows the setting of extensional stress fields (low B values and sub-vertical σ 1 ) active in the analyzed sub-volumes. A bottom volume strictly related to a regional extensional background stress field in accordance with the S h derived by breakout data (Figure 6; Borgia et al, 2005;Montone et al, 2012;D'Auria et al, 2014a). The computation of the stress field using the BRTM on a regular three-dimensional grid allows the 3-D figuration of the stress fields "simultaneously" acting from the surface to about 8-km depth (Figures 5, 6).…”

Section: Discussionmentioning

confidence: 99%

“…The strain field resulting from the subsidence of the Vesuvius and the asymmetric spreading of the southern portion of the Somma edifice creates an overall NS compression (see Figure 17 in D' Auria et al, 2014a). This ongoing process is also the source of the persistent seismicity located within the top-volume (Borgia et al, 2005;D'Auria et al, 2013D'Auria et al, , 2014a; Figures 5, 6). Additionally, the low B values associated to stress inversion in the top volume confirm that the retrieved fields are strongly driven by the σ 1 .…”

Section: Mt Somma-vesuviusmentioning

confidence: 99%

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Determining the Stress Field in Active Volcanoes Using Focal Mechanisms

et al. 2016

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Volcanic spreading of Vesuvius, a new paradigm for interpreting its volcanic activity

Cited by 92 publications

References 10 publications

Analysis of Ground Deformation Detected Using the SBAS-DInSAR Technique in Umbria, Central Italy

Analysis of Ground Deformation Detected Using the SBAS-DInSAR Technique in Umbria, Central Italy

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

Determining the Stress Field in Active Volcanoes Using Focal Mechanisms

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