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Book Chapter

Crustal magnetism of the Southern Tyrrhenian Sea from aeromagnetic surveys

By
G. L. Piangiamore
G. L. Piangiamore
1
Dipartimento di Scienze Geologiche, Università di Catania, Corso Italia 55, 95129 Catania Italy (e-mail: gpiangiamore@yahoo.it)
2
Stazione di Geofisica Marina INGV-Sede di Portovenere, Villa Pezzino, Via Pezzino Basso 2, 19020 Fezzano di Portovenere (SP), Italy
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O. Faggioni
O. Faggioni
2
Stazione di Geofisica Marina INGV-Sede di Portovenere, Villa Pezzino, Via Pezzino Basso 2, 19020 Fezzano di Portovenere (SP), Italy
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M. S. Barbano
M. S. Barbano
1
Dipartimento di Scienze Geologiche, Università di Catania, Corso Italia 55, 95129 Catania Italy (e-mail: gpiangiamore@yahoo.it)
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Published:
January 01, 2006

Abstract

Aeromagnetic data from the Southern Tyrrhenian Sea have been analysed, to remove the contributions of shallow and deep sources to the magnetic anomalies by applying a processing technology that increases the informative potential of the magnetic data acquired by AGIP with great accuracy, uniform distribution and high density. The aeromagnetic anomaly field has been reduced to the bottom topographic surface by the bottom reduction method. Spectral signal analysis has been carried out to separate low- and high-frequency components. The spectral reference field (SRF), obtained from the cotransformation of low frequencies, gives information about deep magnetic structures. The high-frequency components, computed from the difference between the magnetic anomaly field and the SRF, provides the spectral anomaly field (SAF). The bottom reduced magnetic anomaly field is derived by merging the high- and low-frequency bands. The resulting map provides information about geotectonic features in the Southern Tyrrhenian area and shows the effectiveness of the adopted approach over traditional procedures.

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Contents

Geological Society, London, Special Publications

Tectonics of the Western Mediterranean and North Africa

G. Moratti
G. Moratti
CNR-Institute of Geosciences and Earth Resources, Italy
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A. Chalouan
A. Chalouan
University of Mohammed V Agdal, Rabat, Morocco
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Geological Society of London
Volume
262
ISBN electronic:
9781862395107
Publication date:
January 01, 2006

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