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The volcano-tectonic map of Etna volcano, 1:100.000 scale: an integrated approach based on a morphotectonic analysis from high-resolution DEM constrained by geologic, active faulting and seismotectonic data

Azzaro, Raffaele und Branca, Stefano und Gwinner, Klaus und Coltelli, Mauro (2012) The volcano-tectonic map of Etna volcano, 1:100.000 scale: an integrated approach based on a morphotectonic analysis from high-resolution DEM constrained by geologic, active faulting and seismotectonic data. Italian Journal of Geosciences, 131 (1), Seiten 153-170. Societa Geologica Italiana. doi: 10.3301/IJG.2011.29.

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Kurzfassung

A new volcano-tectonic map of Etna volcano has been compiled through a morphotectonic analysis performed with detailed field mapping, high-resolution DEM and orthoimages, constrained by seismotectonic data. In this study, we present a homogeneous mapping of the volcano-tectonic and tectonic elements on the whole volcano, consistent with the updated knowledge on the geology and active tectonics observed in historical times. Details of the tectonic features occurring in the lower-middle part of the volcanic edifice, namely the more densely urbanized areas, are described; volcanic elements such as eruptive fissures, caldera and flank collapse rims affecting the upper sectors, are also reported. All the volcanic landforms of Etna edifice have been generated by constructive and destructive volcanic processes largely during the last 15 ka activity of Mongibello volcano. DEM-derived images (e.g. slope and aspect maps) were produced and interpreted in order to identify faultrelated surface features based on an explicit list of well-known elements of tectonic geomorphology. Subsequently, the morphotectonic mapping has been compared with field data on geologic marker offsets, as well as evidence of surface faulting, including coseismic displacements and creeping of historical and recent events. This combined approach has enabled classifying each element reported in the map as (i) exposed faults, (ii) buried faults and (iii) hidden faults. The analysis of slip-rates confirms the exceptional dynamics of the Pernicana fault, which is characterised by an almost constant slip-rate of 20-36 mm/a over the last 1000 years, while the Timpe fault zone and the structural system in the southern flank accommodate a relevant amount of deformation with slip-rates reported to range of ca. 2-4 mm/a. Finally, a seismotectonic model summarises the information regarding seismic hazard, with reference to the additional, potentially severe effects induced by surface faulting.

elib-URL des Eintrags:https://elib.dlr.de/80312/
Dokumentart:Zeitschriftenbeitrag
Titel:The volcano-tectonic map of Etna volcano, 1:100.000 scale: an integrated approach based on a morphotectonic analysis from high-resolution DEM constrained by geologic, active faulting and seismotectonic data
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Azzaro, RaffaeleIstituto Nazionale di Geofisica e Vulcanologia, OsservatorioNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Branca, StefanoIstituto Nazionale di Geofisica e Vulcanologia, OsservatorioNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Gwinner, Klausklaus.gwinner (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Coltelli, MauroIstituto Nazionale di Geofisica e Vulcanologia, OsservatorioNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2012
Erschienen in:Italian Journal of Geosciences
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:131
DOI:10.3301/IJG.2011.29
Seitenbereich:Seiten 153-170
Verlag:Societa Geologica Italiana
Status:veröffentlicht
Stichwörter:Etna, DEM, digital photogrammetry, morphotectonics, volcano-tectonic landforms, active tectonics, seismotectonic model
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erforschung des Weltraums
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EW - Erforschung des Weltraums
DLR - Teilgebiet (Projekt, Vorhaben):R - Exploration des Sonnensystems
Standort: Berlin-Adlershof
Institute & Einrichtungen:Institut für Planetenforschung > Planetengeodäsie
Hinterlegt von: Gwinner, Klaus
Hinterlegt am:08 Jan 2013 10:08
Letzte Änderung:06 Sep 2019 15:21

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