Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2121
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dc.contributor.authorallPignatelli, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallNicolosi, I.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.authorallChiappini, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.date.accessioned2007-05-15T09:53:54Zen
dc.date.available2007-05-15T09:53:54Zen
dc.date.issued2006-08en
dc.identifier.urihttp://hdl.handle.net/2122/2121en
dc.description.abstractThis paper presents a new method to invert magnetic anomaly data in a variety of non-complex contexts when a priori information about the sources is not available. The region containing magnetic sources is discretized into a set of homogeneously magnetized rectangular prisms, polarized along a common direction. The magnetization distribution is calculated by solving an underdetermined linear system, and is accomplished through the simultaneous minimization of the norm of the solution and the misfit between the observed and the calculated field. Our algorithm makes use of a dipolar approximation to compute the magnetic field of the rectangular blocks. We show how this approximation, in conjunction with other correction factors, presents numerous advantages in terms of computing speed and depth resolution, and does not affect significantly the success of the inversion. The algorithm is tested on both synthetic and real magnetic datasets.en
dc.format.extent2507996 bytesen
dc.format.mimetypeapplication/pdfen
dc.language.isoEnglishen
dc.relation.ispartofseries4-5/49 (2006)en
dc.subjectinversionen
dc.subjectmagnetic fielden
dc.subjectweighting functionen
dc.subjectdipolar approximationen
dc.subjectdepth resolutionen
dc.titleAn alternative 3D inversion method for magnetic anomalies with depth resolutionen
dc.typearticleen
dc.type.QualityControlPeer-revieweden
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methodsen
dc.subject.INGV04. Solid Earth::04.02. Exploration geophysics::04.02.07. Instruments and techniquesen
dc.relation.referencesBLAKELY, R.J. (1995): Potential Theory in Gravity and Magnetic Applications (Cambridge University Press). GUILLEN, A. and V. MENICHETTI (1984): Gravity and magnetic inversion with minimization of a specific functional, Geophysics, 49, 1354-1360. FEDI, M. and A. RAPOLLA (1999): 3D inversion of gravity and magnetic data with depth resolution, Geophysics, 64, 452-460. HOERL, A.E. and R.V. KENNARD (1970): Ridge regression; biased estimation for non orthogonal problem, Technometrics, 12, 55-67. JACKSON, D.D. (1972): Interpretation of inaccurate, insufficient, and inconsistent data, Geophys. J. R. Astron. Soc., 28, 97-109. LAST, B.J. and K. KUBIK (1983): Compact gravity inversion, Geophysics, 48, 713-721. LI, Y. and D.W. OLDENBURG (1996): 3D inversion of magnetic data, Geophysics, 61, 394-407. MARCHETTI, M., M. CHIAPPINI and A. MELONI (1998): A test site for the magnetic detection of buried steel drums, Ann. Geofis., 41 (3), 491-498. OLDENBURG, D.W. and Y. LI (2003): Discussion on: «3D inversion of gravity and magnetic data with depth resolution», by M. FEDI and A. RAPOLLA, Geophysics, 68, 400-405. PORTNIANGUINE, O. and S. ZHDANOV (2002): 3D magnetic inversion with data compression and image focusing, Geophysics, 67, 1532-1541. PRESS, W., S. TEULOSKY, W. VETTERLING and B. FLANNERY (1992): Numerical Recipes in C: the Art of Scientific Computing (Cambridge University). RAVAT, D. (1996): Magnetic properties of unrusted steel drums from laboratory and field-magnetic measurements, Geophysics, 61, 1325-1335. SHARMA, P.V. (1986): Geophysical Methods in Geology (Elsevier, Scientific Publishing Company). SILVA, J.B.C. and G.W. HOHMANN (1983): Non-linear magnetic inversion using a random search method, Geophysics, 48, 1645-1658.en
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorPignatelli, A.en
dc.contributor.authorNicolosi, I.en
dc.contributor.authorChiappini, M.en
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italiaen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia-
crisitem.author.orcid0000-0002-3172-2044-
crisitem.author.orcid0000-0002-0711-9923-
crisitem.author.orcid0000-0001-7433-9435-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent04. Solid Earth-
crisitem.classification.parent04. Solid Earth-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
Appears in Collections:Annals of Geophysics
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