Spatial distribution of soil radon as a tool to recognize active faulting on an active volcano: the example of Mt. Etna (Italy)

2011 ◽  
Vol 102 (9) ◽  
pp. 863-870 ◽  
Author(s):  
Marco Neri ◽  
Salvatore Giammanco ◽  
Elisabetta Ferrera ◽  
Giuseppe Patanè ◽  
Vittorio Zanon
Keyword(s):  
Spatial Distribution ◽  
Active Volcano ◽  
Active Faulting ◽  
Soil Radon ◽  
Mt Etna

scholarly journals Instrumental seismic catalogue of Mt. Etna earthquakes (Sicily, Italy): ten years (2000-2010) of instrumental recordings

2015 ◽  
Vol 58 (4) ◽  
Author(s):  
Salvatore Alparone ◽  
Vincenza Maiolino ◽  
Antonino Mostaccio ◽  
Antonio Scaltrito ◽  
Andrea Ursino ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Seismic Hazard ◽  
Velocity Model ◽  
Active Volcano ◽  
Earthquake Catalogue ◽  
Hazard Maps ◽  
One Dimensional ◽  
Seismic Catalogue ◽  
Mt Etna ◽  
Hypocentral Parameters

<p>Instrumental seismic catalogues are an essential tool for the zonation of the territory and the production of seismic hazard maps. They are also a valuable instrument for detailed seismological studies regarding active volcanoes and, above all, for interpreting the magma dynamics and the evolution of eruptive phenomena. In this paper, we show the first instrumental earthquake catalogue of Mt. Etna, for the period 2000-2010, with the purpose of producing a homogeneous dataset of 10 years of seismological observations. During this period, 16,845 earthquakes have been recorded by the seismic network run by the Istituto Nazionale di Geofisica and Vulcanologia, Osservatorio Etneo, in Catania. A total of 6,330 events, corresponding to approximately 40% of all earthquakes recorded, were located by using a one-dimensional VP velocity model. The magnitude completeness of the catalogue is equal to about 1.5 for the whole period, except for some short periods in 2001 and 2002-2003 and at the end of 2009. The reliability of the data collected is supported by the good values of the main hypocentral parameters through the time. The spatial distribution of seismicity allowed the highlighting of several seismogenetic areas characterized by different seismic rates and focal depths. This seismic catalogue represents a fundamental tool for several research aiming to a better understanding of the behavior of an active volcano such as Mt. Etna.</p><div> </div>

Development and spatial distribution of soils on an active volcano: Mt Etna, Sicily

CATENA ◽  
2016 ◽  
Vol 137 ◽  
pp. 277-297 ◽  
Author(s):  
Peter James ◽  
David K. Chester ◽  
Angus M. Duncan
Keyword(s):  
Spatial Distribution ◽  
Active Volcano ◽  
Mt Etna

Soil radon response around an active volcano

2001 ◽  
Vol 34 (1-6) ◽  
pp. 433-436 ◽  
Author(s):  
N Segovia ◽  
C Valdes ◽  
P Peña ◽  
M Mena ◽  
E Tamez
Keyword(s):  
Active Volcano ◽  
Soil Radon

Soil radon monitoring in the NE flank of Mt. Etna (Sicily)

2006 ◽  
Vol 64 (5) ◽  
pp. 624-629 ◽  
Author(s):  
G. Immè ◽  
S. La Delfa ◽  
S. Lo Nigro ◽  
D. Morelli ◽  
G. Patanè
Keyword(s):  
Soil Radon ◽  
Mt Etna ◽  
Radon Monitoring

CO2 spatial distribution over Mexican urban centers from satellite observations

2021 ◽  
Author(s):  
Mixtli Campos-Pineda ◽  
Noémie Taquet ◽  
Wolfgang Stremme ◽  
Alejandro Bezanilla ◽  
Thomas Lauvaux ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Urban Areas ◽  
Complex Terrain ◽  
Active Volcano ◽  
Pressure Data ◽  
Urban Centers ◽  
The Public ◽  
Using Data ◽  
Areas Of Interest ◽  
Level 2

&lt;p&gt;The Mexico City Metropolitan Area (MCMA), located in proximity to an active volcano, is the largest urban center in North America and there is great interest to better characterize carbon emissions of this and other major urban centers in the country. NASA&amp;#8217;s Orbiting Carbon Observatory (OCO-3) was installed in the International Space (ISS) in 2019. The inclusion of a Pointing Mirror Assembly (PMA) in this third iteration allows for a new mode of data collection that samples an area of ~80 x 80 km in approximately 2 minutes. This mode is used to collect map-like data, called Snapshot Area Maps (SAMs), over areas of interest (e.g. volcanos or urban areas). The OCO-3 module has collected SAMs over the MCMA (and the Popocat&amp;#233;petl volcano) throughout 2020, and also of the metropolitan areas of Guadalajara and Monterrey throughout the second half of 2020.&lt;/p&gt;&lt;p&gt;Using data from the public release of OCO-3 Level 2 (L2) &amp;#8220;Lite EarlyR&amp;#8221; product, available at the Goddard Earth Sciences Data and Information Services Center (GES DISC), we have built maps of the spatial distribution of xCO&lt;sub&gt;2&lt;/sub&gt; for these regions. Data is filtered according to the reported quality flag in the data product, compared with ground-based FTIR measurements of column xCO&lt;sub&gt;2&lt;/sub&gt; over the MCMA region and averaged with an oversampling method. Surface pressure data with the averaged xCO&lt;sub&gt;2&lt;/sub&gt; is used to calculate the concentrations within the mixed layer (xCO&lt;sub&gt;2&lt;/sub&gt;&lt;sup&gt;ML&lt;/sup&gt;) in order to compensate for the effects of the complex terrain.&amp;#160; This product is also used&amp;#160; for comparison with CO spatial distributions obtained from TROPOMI data products and a simple xCO&lt;sup&gt;ML&lt;/sup&gt;/xCO&lt;sub&gt;2&lt;/sub&gt;&lt;sup&gt;ML&lt;/sup&gt; ratio is obtained and mapped for the three urban centers. This work showcases the utility of SAMs in cooperation with ground-based measurements to produce detailed descriptions of the spatial distribution of CO&lt;sub&gt;2&lt;/sub&gt; for a wide variety of applications, as well as the importance of frequent soundings over important emission sources around the world.&lt;/p&gt;

The eccentric cones Monte De Fiore, Monti Rossi, Monte Spagnolo and the 2002/2003 eruption, Mt. Etna: evidence for magma mixing

2020 ◽  
Author(s):  
Moritz Bauer ◽  
Theodoros Ntaflos ◽  
Rainer Abart ◽  
Pier-Paolo Giacomoni ◽  
Carmelo Ferlito ◽  
...  
Keyword(s):  
Lava Flow ◽  
Melt Inclusions ◽  
Magma Mixing ◽  
Active Volcano ◽  
Mineral Chemistry ◽  
Geodynamic Setting ◽  
Plumbing System ◽  
Rock Composition ◽  
Mt Etna ◽  
Normal Zoning

&lt;p&gt;Mt. Etna is one of the most protrusive features of the eastern coastline of Sicily, Italy. As Europe&amp;#8217;s most active volcano it has been studied extensively to reveal its geodynamic setting, plumbing system and due to the constant monitoring of the volcano edifice the prediction of the risk future events is sophisticated at Mt. Etna.&lt;/p&gt;&lt;p&gt;The eruptive activity has been divided according to the age into 6 stages: (1) &amp;#8220;Tholeiitic Stage&amp;#8221;, was active between 600-320 ka ago, (2) the &amp;#8220;Timpe Stage&amp;#8221; between 220 and 110 ka ago, (3) the &amp;#8220;Ancient Alcaline Volcanism&amp;#8221;&amp;#160; between 110 and 65 ka ago and (4) the &amp;#8220;Ellittico Stage&amp;#8221; between 57 and 15 ka ago (5) the &amp;#8220;Mongibello Stage&amp;#8221; from 15 ka ago until 1971 and (6) the &amp;#8220;post -1971 Stage&amp;#8221; active since 1971 (Casetta et al., 2019).&lt;/p&gt;&lt;p&gt;The lava propagating through the Etnean plumbing system generated a complex network consisting of sills and dykes responsible for the formation of the summit craters and a plethora of eccentric cones that cover the flanks of the volcano.&lt;/p&gt;&lt;p&gt;We studied whole rock and mineral chemistry of the lavas from three eccentric cones (Monte Spagnolo, Monte Fiori and Monte Rossi) and the 2002/2003 southern flank lava flow. All lavas are characterized by trachytic texture with variable modal composition of olivine, clinopyroxene and plagioclase phenocrysts. Euhedral and skeletal olivine phenocrysts can be distinguished into three main groups; a) normal zoning, b) inverse zoning, and c) patchy appearance with melt inclusions of andesitic and trachytic composition. The Monte Spagnolo whole rock composition has an Mg# ranging between 52-54 and 10.7 wt% CaO , being are the most primitive lavas among the sampled outcrops whereas the Monte De Fiore lavas are the most evolved since the Mg# ranges from 48.6 to 49.2 and the CaO content from 11 to 11.2 wt%. Both, Monti Rossi and the&amp;#160; 2002/2003 lava flow are more evolved than the Monte Spagnolo since they have Mg# ~ 50 and 49-49.3 respectively. The CaO concentration in both outcrops is relatively constant ranging around 10.5 wt%.&lt;/p&gt;&lt;p&gt;The olivine compositions follow the same trend as their whole rocks. The most MgO-rich olivine (Fo=88.9 %) was found in the Monte Spagnolo lavas. This olivine is of magmatic origin and cannot be considered as mantle derived xenocryst since the NiO content is low (NiO=0.17 &amp;#8211; 0.2 wt%) and the CaO-content high (CaO=0.24 &amp;#8211; 0.26 wt%). The most evolved lavas from Monte De Fiore have the lowest Fo-content (Fo=75 - 78 %). Olivine from all samples has a characteristic inverse zonation with, at Monti Rossi and 2002/2003 lava flow, Fo-content in the core ranging from 69% to 75% and in the rim from 77% to 80% respectively.&lt;/p&gt;&lt;p&gt;In conclusion, the studied eccentric cones show extensive magma mixing as can be inferred from the olivine inverse zoning. Monte Spagnolo lavas represent the most primitive magma formed at high temperatures (olivine skeletal growing) and the Monte De Fiore lavas the most evolved magma.&lt;/p&gt;&lt;p&gt;&amp;#160;&lt;/p&gt;&lt;p&gt;Casetta et al., 2019. International Geology Review, DOI: 10.1080/00206814.2019.1610979&lt;/p&gt;

Soil radon concentration and effective stress variation at Mt. Etna (Sicily) in the period January 2003–April 2005

2008 ◽  
Vol 43 (7) ◽  
pp. 1299-1304 ◽  
Author(s):  
Santo La Delfa ◽  
Ivan Agostino ◽  
Daniela Morelli ◽  
Giuseppe Patanè
Keyword(s):  
Effective Stress ◽  
Radon Concentration ◽  
Stress Variation ◽  
Soil Radon ◽  
Mt Etna
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