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Magnetic signature of submarine volcanoes in the Phlegrean Fields-Ischia Ridge (North-Western side of the Bay of Naples, Southern Italy)
Author(s)
Issued date
August 2008
Issue/vol(year)
4/51 (2008)
Language
English
Abstract
This paper presents a study of the Phlegrean Fields-Ischia submarine ridge by the analysis and interpretation of
high-resolution aeromagnetic data recently acquired in the Western Procida offshore. The investigated area is located
along the ridge connecting Ischia to the Phlegrean Fields and is characterized by the existence of several
monogenetic volcanoes aligned on a NE-SW system of faults. The high-resolution magnetic data yielded new
information on the area, highlighting particularly the signature of a volcanic body located between Pt. Serra and
the Ruommoli shoal. This structure has not been clearly described before and we named it as the Pt. Serra submarine
volcano. The computation of the analytic signal and horizontal gradient of the data distinctly located this
structure and definined the position of its rims. A 2D modeling and 3D inversion of data provided information
on the volcano’s thickness, width and magnetization, disclosing a meaningful igneous body extending down to
several hundred meters b.s.l.
high-resolution aeromagnetic data recently acquired in the Western Procida offshore. The investigated area is located
along the ridge connecting Ischia to the Phlegrean Fields and is characterized by the existence of several
monogenetic volcanoes aligned on a NE-SW system of faults. The high-resolution magnetic data yielded new
information on the area, highlighting particularly the signature of a volcanic body located between Pt. Serra and
the Ruommoli shoal. This structure has not been clearly described before and we named it as the Pt. Serra submarine
volcano. The computation of the analytic signal and horizontal gradient of the data distinctly located this
structure and definined the position of its rims. A 2D modeling and 3D inversion of data provided information
on the volcano’s thickness, width and magnetization, disclosing a meaningful igneous body extending down to
several hundred meters b.s.l.
References
AIELLO, G., A. ANGELINO, B. D’ARGENIO, E. MARSELLA, N.
PELOSI, S. RUGGIERI and A. SINISCALCHI (2005): Buried
volcanic structures in the Gulf of Naples (Southern
Tyrrhenian Sea, Italy) resulting from high resolution
magnetic survey and seismic profiling, Annals of Geophysics,
48 (6), 883-897.
BRUNO, P.P.G., G. DE ALTERIS and G. FLORIO ( 2002): The
western undersea section of the Ischia volcanic complex
(Italy, Tyrrhenian sea) inferred by marine geophysical
data, Geophysical Research Letters, 29 (9), 57 (1-4).
DE ALTERIS, G., C. DONADIO and L. FERRANTI (1997): Morfologie
e strutture di apparati vulcanici sommersi nel
Canale d’Ischia (Mar Tirreno), Memorie Descrittive
Carta Geologica d’Italia, 52, 85-96.
DE ALTERIS, G., P.P.G. BRUNO, E. DI FIORE, G. FLORIO, S.
PASSARO and R. TONIELLI (2002): Magnetic marine
geophysical data (multibeam bathymetry, magnetics
and seismics) in active volcanic area: the case of Ischia
volcano and its offshore (Italy, Tyrrhenian Sea), Boll.
Geof. Teor. Appl., 42, 45-47.
DE ALTERIS, G. and F. TOSCANO (2003): Introduzione alla
geologia dei mari circostanti le isole flegree di Ischia,
Procida e Vivara, in: AA.VV., Ambiente marino
costiero e territorio delle isole flegree (Ischia, Procida
e Vivara) e Golfo di Napoli. Risultati di uno studio multidisciplinare,
Monografia Accademia di scienze
Matematiche, Fisiche e Naturali, (Liguori Ed.,
Naples), pp. 77.
DE ALTERIS, G., R. TONDELLI, S. PASSARO and M. DE LAURO
(2006): Isole Flegree (Ischia e Procida), (Liguori
Ed., Naples), pp. 73.
DE SANTIS, A., L.R. GAYA-PIQUÉ, A. DOMINICI, A. MELONI,
J.M. TORTA and R. TOZZI, (2003): Italian Geomagnetic
Reference Field (ITGRF): update for 2000 and secular
variation model up to 2005 by autoregressive forecasting,
Annals of Geophysics, 46, n. 3, 491-500.
DI GIROLAMO, P. and D. STANZIONE (1973): Lineamenti
geologici e petrologici dell’isola di Procida, Rend. Soc.
It. Min. Petr., 29, 82-125.
DI GIROLAMO, P. and G. ROLANDI (1975): Vulcanismo sottomarino
latitebasaltico-latitico (serie potassica) nel
Canale d’Ischia (Campania), Rend. Acc. Sci. Fis. Mat.,
(Accademia Nazionale Scienze Lettere Arti in Napoli),
S. 4, 42, 561-596.
DI GIROLAMO, P., GHIARA, M.R., LIRER, L., MUNNO, R.,
ROLANDI, G. and D. STANZIONE (1984): Vulcanologia e
petrologia dei Campi Flegrei, Boll. Soc. Geol. It., 103,
349-413.
FEDI, M., P.C. HANSEN and V. PAOLETTI (2005): Analysis of
Depth Resolution in Potential Field Inversion: a Tutorial,
Geophysics, 70, A1-A11.
FEDI, M., P.C. HANSEN and V. PAOLETTI (2007): Ambiguity
and Depth Resolution in Potential Field Inversion,
Communications to SIMAI Congress (Electronic Journal),
2, doi: 10.1685/CSC06155
FERRANTI, L., S. BRAVI and G. DE ALTERIS (1994): La secca
delle Formiche di Vivara (Canale d’Ischia, Campania),
osservazioni geomorfologiche-strutturali e faunistiche,
Rend. Acc. Sci. Fis. Mat., (Accademia Nazionale
Scienze Lettere Arti in Napoli, S. IV), 61, 50-65.
IMBÒ, G., V. BONASIA and P. GASPARINI (1964): Rilievo
gravimetrico dell’Isola di Procida, Ann. Oss. Vesuv., 6.
PAOLETTI, V., M. FEDI, G. FLORIO, R. SUPPER and A. RAPOLLA
(2004): The new integrated aeromagnetic map of
the Phlegrean Fields volcano and surrounding areas,
Annals of Geophysics, 47, 1569-1580.
PAOLETTI, V., R. SUPPER, M. CHIAPPINI, M. FEDI, G. FLORIO
and A. RAPOLLA (2005a): Aeromagnetic survey of the
Somma-Vesuvius volcanic area, Annals of Geophysics,
48, 1596-1580.
PAOLETTI, V., M. SECOMANDI, M. FEDI, G. FLORIO and A.
RAPOLLA (2005b): The integration of magnetic data in
the Neapolitan volcanic district, Geosphere, 1, 85-96.
PAOLETTI, V., R. DI MAIO, F. CELLA, G. FLORIO, K. MOCKA,
N. ROBERTI, M. SECOMANDI, R. SUPPER, M. FEDI and A.
RAPOLLA (2009): The Ischia Volcanic Island (Southern
Italy): Inferences from Potential Field Data Interpretation,
Journal of Volcanology and Geothermal Research,
179, 69-86.
SECOMANDI, M., V. PAOLETTI, G. AIELLO, M. FEDI, E.
MARSELLA, S. RUGGIERI, B. D’ARGENIO and A. RAPOLLA
(2003): Analysis of the magnetic anomaly field of
the volcanic district of the Bay of Naples, Italy, Marine Geophysical Researches, 24, 207-221.
SINISCALCHI, A., A. ANGELINO, S. RUGGIERI, G. AIELLO, E.
MARSELLA and M. SACCHI (2002): High resolution
magnetic anomaly map of the Bay of Naples (Southern
Tyrrhenian Sea, Italy), Boll. Geof. Teor. Appl., 42, 99-
104.
VEZZOLI, L. (Ed.) (1988): Island of Ischia, Quaderni de «La
Ricerca Scientifica», (Cnr, Progetto Finalizzato Geodinamica),
10, pp. 126.
PELOSI, S. RUGGIERI and A. SINISCALCHI (2005): Buried
volcanic structures in the Gulf of Naples (Southern
Tyrrhenian Sea, Italy) resulting from high resolution
magnetic survey and seismic profiling, Annals of Geophysics,
48 (6), 883-897.
BRUNO, P.P.G., G. DE ALTERIS and G. FLORIO ( 2002): The
western undersea section of the Ischia volcanic complex
(Italy, Tyrrhenian sea) inferred by marine geophysical
data, Geophysical Research Letters, 29 (9), 57 (1-4).
DE ALTERIS, G., C. DONADIO and L. FERRANTI (1997): Morfologie
e strutture di apparati vulcanici sommersi nel
Canale d’Ischia (Mar Tirreno), Memorie Descrittive
Carta Geologica d’Italia, 52, 85-96.
DE ALTERIS, G., P.P.G. BRUNO, E. DI FIORE, G. FLORIO, S.
PASSARO and R. TONIELLI (2002): Magnetic marine
geophysical data (multibeam bathymetry, magnetics
and seismics) in active volcanic area: the case of Ischia
volcano and its offshore (Italy, Tyrrhenian Sea), Boll.
Geof. Teor. Appl., 42, 45-47.
DE ALTERIS, G. and F. TOSCANO (2003): Introduzione alla
geologia dei mari circostanti le isole flegree di Ischia,
Procida e Vivara, in: AA.VV., Ambiente marino
costiero e territorio delle isole flegree (Ischia, Procida
e Vivara) e Golfo di Napoli. Risultati di uno studio multidisciplinare,
Monografia Accademia di scienze
Matematiche, Fisiche e Naturali, (Liguori Ed.,
Naples), pp. 77.
DE ALTERIS, G., R. TONDELLI, S. PASSARO and M. DE LAURO
(2006): Isole Flegree (Ischia e Procida), (Liguori
Ed., Naples), pp. 73.
DE SANTIS, A., L.R. GAYA-PIQUÉ, A. DOMINICI, A. MELONI,
J.M. TORTA and R. TOZZI, (2003): Italian Geomagnetic
Reference Field (ITGRF): update for 2000 and secular
variation model up to 2005 by autoregressive forecasting,
Annals of Geophysics, 46, n. 3, 491-500.
DI GIROLAMO, P. and D. STANZIONE (1973): Lineamenti
geologici e petrologici dell’isola di Procida, Rend. Soc.
It. Min. Petr., 29, 82-125.
DI GIROLAMO, P. and G. ROLANDI (1975): Vulcanismo sottomarino
latitebasaltico-latitico (serie potassica) nel
Canale d’Ischia (Campania), Rend. Acc. Sci. Fis. Mat.,
(Accademia Nazionale Scienze Lettere Arti in Napoli),
S. 4, 42, 561-596.
DI GIROLAMO, P., GHIARA, M.R., LIRER, L., MUNNO, R.,
ROLANDI, G. and D. STANZIONE (1984): Vulcanologia e
petrologia dei Campi Flegrei, Boll. Soc. Geol. It., 103,
349-413.
FEDI, M., P.C. HANSEN and V. PAOLETTI (2005): Analysis of
Depth Resolution in Potential Field Inversion: a Tutorial,
Geophysics, 70, A1-A11.
FEDI, M., P.C. HANSEN and V. PAOLETTI (2007): Ambiguity
and Depth Resolution in Potential Field Inversion,
Communications to SIMAI Congress (Electronic Journal),
2, doi: 10.1685/CSC06155
FERRANTI, L., S. BRAVI and G. DE ALTERIS (1994): La secca
delle Formiche di Vivara (Canale d’Ischia, Campania),
osservazioni geomorfologiche-strutturali e faunistiche,
Rend. Acc. Sci. Fis. Mat., (Accademia Nazionale
Scienze Lettere Arti in Napoli, S. IV), 61, 50-65.
IMBÒ, G., V. BONASIA and P. GASPARINI (1964): Rilievo
gravimetrico dell’Isola di Procida, Ann. Oss. Vesuv., 6.
PAOLETTI, V., M. FEDI, G. FLORIO, R. SUPPER and A. RAPOLLA
(2004): The new integrated aeromagnetic map of
the Phlegrean Fields volcano and surrounding areas,
Annals of Geophysics, 47, 1569-1580.
PAOLETTI, V., R. SUPPER, M. CHIAPPINI, M. FEDI, G. FLORIO
and A. RAPOLLA (2005a): Aeromagnetic survey of the
Somma-Vesuvius volcanic area, Annals of Geophysics,
48, 1596-1580.
PAOLETTI, V., M. SECOMANDI, M. FEDI, G. FLORIO and A.
RAPOLLA (2005b): The integration of magnetic data in
the Neapolitan volcanic district, Geosphere, 1, 85-96.
PAOLETTI, V., R. DI MAIO, F. CELLA, G. FLORIO, K. MOCKA,
N. ROBERTI, M. SECOMANDI, R. SUPPER, M. FEDI and A.
RAPOLLA (2009): The Ischia Volcanic Island (Southern
Italy): Inferences from Potential Field Data Interpretation,
Journal of Volcanology and Geothermal Research,
179, 69-86.
SECOMANDI, M., V. PAOLETTI, G. AIELLO, M. FEDI, E.
MARSELLA, S. RUGGIERI, B. D’ARGENIO and A. RAPOLLA
(2003): Analysis of the magnetic anomaly field of
the volcanic district of the Bay of Naples, Italy, Marine Geophysical Researches, 24, 207-221.
SINISCALCHI, A., A. ANGELINO, S. RUGGIERI, G. AIELLO, E.
MARSELLA and M. SACCHI (2002): High resolution
magnetic anomaly map of the Bay of Naples (Southern
Tyrrhenian Sea, Italy), Boll. Geof. Teor. Appl., 42, 99-
104.
VEZZOLI, L. (Ed.) (1988): Island of Ischia, Quaderni de «La
Ricerca Scientifica», (Cnr, Progetto Finalizzato Geodinamica),
10, pp. 126.
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