AsubmarinegaseruptionstartedinNovember2002offshoreofPanareavolcano(AeolianIslands, Italy). Theintensityofthe gas emissionandtheconsiderableanomalies of thegeochemical andgeophysical parameters havealarmedthevolcanological communityandtheItalianCivil ProtectionAgencyonthepossibilitythat thisactivitymayrepresent avolcanicunrest at Panarea volcano. WeusedahighresolutionMarineDigital TerrainModel(MDTM), with0.5maccuracy, anddetailedunderwatersurveys byscubadivingtostudytheexhalationcentresandthegeological, morphological andstructural featuresof theseafloor andto clarifytherelationshipsbetweengasventsdistribution,submarinevolcanologicalstructuresandtherecentdeformationofthisarea. Theunderwatersurveysrevealedanexhalativefieldcharacterisedby21mainactivegasventsandcratersfrommetrestotensof metres indiameter, anda pervasive exhalationfromthe seafloor; hundreds of fossil craters associatedwithgas pipes and hydrothermal alterationarealsopresent ontheseafoor: craters, pipesandconduitsarenot associatedwithjuveniledepositsand relatetoalongstandinghistoryof gasexhalationanderuptions. WepresentthefirstgeologicalsketchmapoftheseafloorsurroundingtheexhalativeareaandestablishtheroleofNE-andNW- trending fractures as them a in pathways for the gas exhalation.
Esposito, A., Giordano, G., Anzidei, M. (2006). The 2002-2003 Submarine Gas Eruption At Panarea Island (Aeolian Archipelago, Italy): Structure And Volcanology Of The Seafloor And Implications For Hazard Evaluation. MARINE GEOLOGY, 227, 119-134.
The 2002-2003 Submarine Gas Eruption At Panarea Island (Aeolian Archipelago, Italy): Structure And Volcanology Of The Seafloor And Implications For Hazard Evaluation
GIORDANO, Guido;
2006-01-01
Abstract
AsubmarinegaseruptionstartedinNovember2002offshoreofPanareavolcano(AeolianIslands, Italy). Theintensityofthe gas emissionandtheconsiderableanomalies of thegeochemical andgeophysical parameters havealarmedthevolcanological communityandtheItalianCivil ProtectionAgencyonthepossibilitythat thisactivitymayrepresent avolcanicunrest at Panarea volcano. WeusedahighresolutionMarineDigital TerrainModel(MDTM), with0.5maccuracy, anddetailedunderwatersurveys byscubadivingtostudytheexhalationcentresandthegeological, morphological andstructural featuresof theseafloor andto clarifytherelationshipsbetweengasventsdistribution,submarinevolcanologicalstructuresandtherecentdeformationofthisarea. Theunderwatersurveysrevealedanexhalativefieldcharacterisedby21mainactivegasventsandcratersfrommetrestotensof metres indiameter, anda pervasive exhalationfromthe seafloor; hundreds of fossil craters associatedwithgas pipes and hydrothermal alterationarealsopresent ontheseafoor: craters, pipesandconduitsarenot associatedwithjuveniledepositsand relatetoalongstandinghistoryof gasexhalationanderuptions. WepresentthefirstgeologicalsketchmapoftheseafloorsurroundingtheexhalativeareaandestablishtheroleofNE-andNW- trending fractures as them a in pathways for the gas exhalation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.