The Secche di Lazzaro pyroclastics of Stromboli volcano: a phreatomagmatic eruption related to the Sciara del Fuoco sector collapse

1996 ◽  
Vol 58 (2-3) ◽  
pp. 239-245 ◽  
Author(s):  
A. Bertagnini ◽  
P. Landi
Keyword(s):  
Stromboli Volcano ◽  
Phreatomagmatic Eruption ◽  
Sector Collapse ◽  
Sciara Del Fuoco

Spectral and dynamical hints on the time scale of preparation of the 5 April 2003 explosion at Stromboli volcano

2006 ◽  
Vol 43 (1) ◽  
pp. 41-55 ◽  
Author(s):  
Roberto Carniel ◽  
Ramon Ortiz ◽  
Mauro Di Cecca
Keyword(s):  
Seismic Data ◽  
Time Scale ◽  
Material Failure ◽  
Stromboli Volcano ◽  
Forecast Method ◽  
Sector Collapse ◽  
Strombolian Activity ◽  
Dynamical Phase ◽  
Paroxysmal Event ◽  
Sciara Del Fuoco

Stromboli volcano is well known for its continuous strombolian activity. Moreover, the volcano occasionally shows effusive phases, the latest in 1985–1986. On 28 December 2002 Stromboli entered a new effusive phase, accompanied by different paroxysmal events that led to considerable hazards for inhabitants and tourists on the island of Stromboli. On 30 December 2002 a major sector collapse affected the Sciara del Fuoco slope and initiated a tsunami. On 5 April 2003 a powerful explosion, which can be compared in size with the most recent explosion in 1930, covered a large part of the normally tourist accessible summit area with bombs. As this explosion was not forecasted, although the island was by then effectively monitored by a dense deployment of instruments, in this paper, we tackle the problem of highlighting the time scale of preparation of this event and conduct a search for possible precursors. For this purpose, we analyze the seismic data preceding the paroxysm with spectral and dynamical methods, highlighting that this paroxysmal event can be seen as the final result of a dynamical phase that started at least 2.5 h before the event. Therefore, this is the time scale during which the search can and should be made for possible precursors. Moreover, the application of the "material failure forecast" method suggests that this final dynamical phase may be just the final acceleration of a process that was building up for at least several days prior to the event.

scholarly journals The Monitoring of CO2 Soil Degassing as Indicator of Increasing Volcanic Activity: The Paroxysmal Activity at Stromboli Volcano in 2019–2021

Geosciences ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 169
Author(s):  
Salvatore Inguaggiato ◽  
Fabio Vita ◽  
Marianna Cangemi ◽  
Claudio Inguaggiato ◽  
Lorenzo Calderone
Keyword(s):  
Volcanic Activity ◽  
Co2 Flux ◽  
High Amplitude ◽  
Positive Trend ◽  
Stromboli Volcano ◽  
Soil Co2 Flux ◽  
Paroxysmal Activity ◽  
Soil Degassing ◽  
Sciara Del Fuoco ◽  
Co2 Soil Degassing

Since 2016, Stromboli volcano has shown an increase of both frequency and energy of the volcanic activity; two strong paroxysms occurred on 3 July and 28 August 2019. The paroxysms were followed by a series of major explosions, which culminated on January 2021 with magma overflows and lava flows along the Sciara del Fuoco. This activity was monitored by the soil CO2 flux network of Istituto Nazionale di Geofisica e Vulcanologia (INGV), which highlighted significant changes before the paroxysmal activity. The CO2 flux started to increase in 2006, following a long-lasting positive trend, interrupted by short-lived high amplitude transients in 2016–2018 and 2018–2019. This increasing trend was recorded both in the summit and peripheral degassing areas of Stromboli, indicating that the magmatic gas release affected the whole volcanic edifice. These results suggest that Stromboli volcano is in a new critical phase, characterized by a great amount of volatiles exsolved by the shallow plumbing system, which could generate other energetic paroxysms in the future.

A microwave monitoring service for the study of the Stromboli volcano deformation

2020 ◽  
Author(s):  
Claudio De Luca ◽  
Federico Di Traglia ◽  
Vincenzo De Novellis ◽  
Carmen Esposito ◽  
Teresa Nolesini ◽  
...  
Keyword(s):  
Ground Deformation ◽  
Back Analysis ◽  
Accurate Information ◽  
Civil Protection ◽  
Stromboli Volcano ◽  
Volcano Deformation ◽  
Airborne Sar ◽  
University Of Florence ◽  
Monitoring Service ◽  
Sciara Del Fuoco

<p>In this paper, we present the activities relevant to the microwave monitoring of the Stromboli volcano ground deformation, performed by IREA-CNR (Institute for the Electromagnetic Sensing of the Environment) and UNIFI (University of Florence) as Centres of Competence for the Italian Civil Protection Department.</p><p>The availability of Synthetic Aperture Radar (SAR) system provides, among several techniques, accurate information on the volcano morphology and deformation, thus allowing us to understand the on-going volcanic changes. In this work, we present the results of a back-analysis (from 2015) of the volcano behaviour in terms of ground deformation and an insight on the volcano crisis occurred from July 3 2019, by using Differential Interferometry SAR (DInSAR) measurements.</p><p>The generated DInSAR results are both satellite and ground based. In particular, we show the displacement time series obtained with Sentinel-1 data acquired from March 2015 to October 2019 over the whole island and from ascending and descending orbits, and the displacement estimated with a Ground-Based SAR placed for the Sciara del Fuoco and summit craters sensing.</p><p>Moreover, the combination of the deformation measurements retrieved with both monitoring systems, which are characterized by independent acquisition geometries, allowed us to partially reconstruct a 3D deformation field of Sciara del Fuoco area.</p><p>Finally, we show the preliminary result of a test about an operational monitoring service based on new methodologies for the processing of airborne SAR data, aimed at evaluating its relevance for Civil Protection purposes in volcanic risk context.</p><p><strong> </strong></p><p>This work is supported by the 2019-2021 IREA-CNR and Italian Civil Protection Department agreement, and by the 2019-2021 UNIFI and Italian Civil Protection Department agreement.</p>

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