Search results for " etna"
showing 10 items of 83 documents
Etna. Miti e riti della "montagna" sacra
2019
L’Etna con la sua immensa mole fumante, la sua incessante attività vulcanica, il potere distruttivo e generativo delle sue lave, i suoi mutevoli paesaggi, ha costituito nei millenni un riferimento costante dell’immaginario isolano, offrendosi come inesauribile sorgente di affabulazione mitopoietica, teatro epico e lirico di vita e di morte, soggetto e scenario di riti, di miti, di leggende molteplici. Colosso dall’indole incostante e dalla potenza terrifica, vorace distruttore di tuguri e palazzi costruiti della sua stessa pietra, di campi e di piantagioni prima nutriti dalla sua stessa lava, l’Etna contiene e rappresenta, materialmente e simbolicamente, gli opposti: l’alto e il basso, la t…
Active tectonics along the south east offshore margin of Mt. Etna: New insights from high-resolution seismic profiles
2018
The offshore margin of Mt. Etna has been shaped by Middle Pleistocene to Holocene shortening and extension and, more recently, by gravity-related sliding of the volcanic edifice. These processes have acted contemporaneously although the gravitational component largely prevails over the tectonic one. In order to investigate this issue, we focused on the main role of active tectonics along the south-eastern offshore of Mt. Etna by means of marine high-resolution seismic data. Seismic profiles revealed post-220 ka sedimentary deposits unconformably overlaying the Lower-Middle Pleistocene Etnean clayey substratum and volcanics of the Basal Tholeiitic phase and the Timpe phase. Offshore Aci Trez…
False and true anomalies of radon concentration: analysis of different methodologies to a reliable forecast of volcanic phenomena
2009
Sampling and analysis methodology of atmospheric deposition: a study case form Mount Etna
2008
Insights into magma and fluid transfer at Mount Etna by a multiparametric approach: A model of the events leading to the 2011 eruptive cycle
2013
Seed germination reports of high mountain species native to Mount Etna (Sicily)
2020
The germination ability of five endemic species from the high mountain belt of Mt. Etna were studied; they are Astragalus siculus, Erysimum etnense, Senecio squalidus subsp. aethnensis, Silene italica subsp. sicula, and Tanacetum vulgare subsp. siculum. Mature seeds were collected in the field, within an elevation range of 1700–2000 m a.s.l. Different experimental conditions were tested and the best methods with optimal germination results are provided and compared for each species. First germination records are given for 4 out of 5 of the investigated taxa.
Periodic volcanic degassing behavior: The Mount Etna example
2013
[1] In contrast to the seismic and infrasonic energy released from quiescent and erupting volcanoes, which have long been known to manifest episodes of highly periodic behavior, the spectral properties of volcanic gas flux time series remain poorly constrained, due to a previous lack of hightemporal resolution gas-sensing techniques. Here we report on SO2 flux measurements, performed on Mount Etna with a novel UV imaging technique of unprecedented sampling frequency (0.5Hz), which reveal, for the first time, a rapid periodic structure in degassing from this target. These gas flux modulations have considerable temporal variability in their characteristics and involve two period bands: 40–250…
Rain-ash interaction during paroxysmal events as potential input of toxic trace element in the environment: example from Mt. Etna Volcano
2012
The value of by-catch data: how species-specific surveys can serve non-target species
2019
Camera trapping has a wide range of research application, but, while research designs are often focused on the study of a single focal species, cameras can also record other non-target species. Occupancy modeling using by-catch data can be a valuable resource to gain information on these species maximizing the scientific effort and efficiency of wildlife surveys. In this study, we used by-catch data from a European wildcat (Felis silvestris silvestris) survey in Southern Italy to assess the habitat covariates determinant for the occupancy of the crested porcupine (Hystrix cristata). We recorded 33 detections at 17 out of 51 cameras (naive occupancy = 0.33). The best models fitted the data w…
La pesca tabacchiera in Sicilia: opportunità da valorizzare.
2012
Una recente indagine condotta nel territorio etneo dal Dipartimento Demetra dell'Università di Palermo, ha condotto all'individuazione di 7 diverse pesche piatte, raccolte e valutate presso un campo catalogo. Le pesche tabacchiere sono caratterizzate dal sapore dolce e da un profumo ed aroma inconfondibili. L'ampio calendario di maturazione, accentuato dalla conformazione del territorio, gli eccellenti caratteri organolettici e l'elevata richiesta da parte del consumatore, sono i presupposti per creare valide operazioni commerciali.