A comparison of surface magnetic data and MAGSAT data over Italy and its surroundings |
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| Affiliation: | 1. Dipartimento di Scienze della Terra, Università di Pisa, Via S. Maria 53, 56126 Pisa, Italy;2. Dipartimento Ingegneria Navale del Mare e per l''Ambiente, Università di Trieste, Via Valerio 10, 34127 Trieste, Italy;1. School of Materials Science and Engineering, Nanyang Technological University, Singapore;2. Energy Research Institute @ Nanyang Technological University, Singapore;3. Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;4. Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Viet Nam;1. Centre for Marine Living Resources and Ecology, Ministry of Earth Sciences, 682508, Kochi, India;2. National Centre for Polar & Ocean Research, Ministry of Earth Sciences, 403804, Goa, India;1. Centre of Biomedical Research, SGPGIMS Campus, Raebarelly Road, Lucknow, 226014, India;2. Department of Chemistry, Institute of Sciences, Banaras Hindu University, Varanasi, 221005, India;1. Precision Stratigraphy Associates and the University of Tulsa, 149 W. Ridge Rd., Cleveland, OK, 74020, USA;2. Rebellion Energy, 5416 S. Yale Ave., Suite 300, Tulsa, OK, 74135, USA;3. Brown and Caldwell, 2 Park Way, Suite 2A, Upper Saddle River, NJ, 07458, USA;4. Laredo Petroleum, Inc., 15 W. 6th Street, Suite 900, Tulsa, OK, 74119, USA;5. Oklahoma State University, School of Geology, Stillwater, OK, USA;6. Research Institute of Petroleum Exploration & Development, Langfang, Hebei, 065007, China;1. Institute of Catalysis for Energy and Environment, College of Chemistry & Chemical Engineering, Shenyang Normal University, Shenyang, Liaoning 110034, PR China;2. State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing 102249, PR China |
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| Abstract: | A new composite map of magnetic surface (MAGSURF) anomaly for Italy and its adjacent region has been derived from sea and ground surveys on the basis of an improved definition of the Italian Magnetic Reference Field and its temporal change. Spectral analysis of the MAGSURF anomaly field shows a regional scale energy in the wavelength range 145–500 km, due to the presence of various crustal sources. The regional MAGSURF anomaly map shows poor correlation with the corresponding MAGSAT scalar anomaly map, whose power spectrum reveals wavelength components in the range 300–700 km. The MAGSURF data are upward-continued to an elevation of 100 km for comparison with MAGSAT satellite data, downward-continued to the same altitude of 100 km and low-pass filtered for wavelengths larger than 500 km. Upward-continued surface data and downward continued satellite data show good morphological similarity for wavelengths in the range 300–500 km at an altitude of 100 km. Satellite data permit the characterization of magnetic signatures due to sources located in the middle-lower crust of Sardinia, Lombardia, Molise and Dalmatia, while further surface regional anomalies are connected with upper crust bodies of Mid Tyrrhene and East Sicily. |
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