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Department of Geophysics, Geological Survey of Austria, Vienna, Austria
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- PublicationOpen AccessAeromagnetic anomaly images of Vulcano and Southern Lipari Islands (Aeolian Archipelago, Italy)(2004)
; ; ; ; ;Supper, R.; Geological Survey of Austria and University of Vienna, Vienna, Austria ;De Ritis, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Motschka, K.; Geological Survey of Austria and University of Vienna, Vienna, Austria ;Chiappini, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia; ; ; Newly acquired high-resolution, low-altitude aeromagnetic data over Vulcano Island and Southwestern Lipari in the Southern Tyrrhenian Sea resolve the major volcanic features in the area associated with the past and present activity. The magnetic character changes in amplitude and frequency from south-east to north-west. The Primordial Vulcano, the Lentia Complex, the Piano Caldera units, the Fossa Caldera deposits, and the currently active La Fossa cone and Vulcanello represent the main volcanic phases on Vulcano Island. They show a distinct magnetic anomaly pattern, whereas prior to this survey, no magnetic signatures of these features were found.451 435 - PublicationOpen AccessThe new integrated aeromagnetic map of the Phlegrean Fields volcano and surrounding areas(2004)
; ; ; ; ; ;Paoletti, V.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italy ;Fedi, M.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italy ;Florio, G.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italy ;Supper, R.; Geological Survey of Austria, Department of Geophysics, Vienna, Austria ;Rapolla, A.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italy; ; ; ; In this paper we present and analyze the new detailed aeromagnetic data set resulting from a recent survey carried out in the Phlegrean Fields volcanic area. The survey was aimed at gaining new insight into the volcanological characteristics of the region north of Phlegrean Fields (Parete-Villa Literno area) where remarkable thickness of volcanic/sub- volcanic rocks were found in wells. Measurement of total magnetic field was performed on two different flight levels, 70 m and 400 m above the ground surface, along flight lines spaced 400 m apart. Both aeromagnetic maps show the noisy effect of linear anomalies evidently due to the presence of railway lines. To filter out these local anomalies a method based on discrete wavelet transform was used, allowing an accurate local filtering and leaving the rest of the field practically unchanged. The filtered data set was integrated with the existing Agip aeromagnetic map of the Phlegrean Fields, leading to a new aeromagnetic map of the whole Phlegrean volcanic area. The compilation of the pole reduced map and of the maps of the Analytic Signal and of the Horizontal Derivative of the integrated data set represents a first step for the interpretation of the maps in terms of geological structures of the whole Phlegrean volcanic district.204 442 - PublicationOpen AccessAeromagnetic survey of the Somma-Vesuvius volcanic area(2005)
; ; ; ; ; ; ;Paoletti, V.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italia ;Supper, R.; Department of Geophysics, Geological Survey of Austria, Vienna, Austria ;Chiappini, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia ;Fedi, M.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italia ;Florio, G.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italia ;Rapolla, A.; Dipartimento di Scienze della Terra, Università degli Studi di Napoli «Federico II», Napoli, Italia; ; ; ; ; In this paper we present and discuss the results of a geophysical airborne survey carried out in the Somma-Vesuvius volcanic area, Southern Italy, in 1999. The helicopter-borne survey was aimed at giving new detailed insights into the distribution of the magnetization of the area and, therefore, into the volcanological characteristics of the region, enhancing the knowledge given by a previous low resolution survey carried out at a regional scale by Agip. The new survey was carried out by flying on a surface parallel to the topography of the area, along flight lines spaced 600 m apart. The obtained total field map is dominated by a large anomaly related to the Mt. Somma-Vesuvius complex itself and characterized by a roughly elliptical shape. High-frequency anomalies occur in the edifice and in the area east of it, partly produced by cultural noise due to the densely inhabited area. The compilation of the maps of the analytic signal and of the horizontal derivative of the field allowed the location of the lateral boundaries of the magnetic sources of the area and represents a first step toward the interpretation of the maps in terms of geological structures.330 565