Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/5369| DC Field | Value | Language |
|---|---|---|
| dc.contributor.authorall | Troiano, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.authorall | Di Giuseppe, M. G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.authorall | Petrillo, Z.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.authorall | Patella, D.; Department of Physical Sciences, University Federico II, Naples, Italy | en |
| dc.date.accessioned | 2009-12-23T10:36:49Z | en |
| dc.date.available | 2009-12-23T10:36:49Z | en |
| dc.date.issued | 2009-03-24 | en |
| dc.identifier.uri | http://hdl.handle.net/2122/5369 | en |
| dc.description.abstract | A controlled source audiofrequency magnetotelluric (CSAMT) survey has been undertaken in the Pantano di San Gregorio Magno faulted basin, an earthquake prone area of Southern Apennines in Italy. A dataset from 11 soundings, distributed along a nearly N-S 780 m long profile, was acquired in the basin’s easternmost area, where the fewest data are available as to the faulting shallow features. A preliminary skew analysis allowed a prevailing 2D nature of the dataset to be ascertained. Then, using a single-site multi-frequency approach, Dantzig’s simplex algorithm was introduced for the first time to estimate the CSAMT decomposition parameters. The simplex algorithm, freely available online, proved to be fast and efficient. By this approach, the TM and TE mode field diagrams were obtained and a N35!W ± 10! 2D strike mean direction was estimated along the profile, in substantial agreement with the fault traces within the basin. A 2D inversion of the apparent resistivity and phase curves at seven almost noise-free sites distributed along the central portion of the profile was finally elaborated, reinforced by a sensitivity analysis, which allowed the best resolved portion of the model to be imaged from the first few meters of depth down to a mean depth of 300 m b.g.l. From the inverted section, the following features have been outlined: (i) a cover layer with resistivity in the range 3–30 ! m ascribed to the Quaternary lacustrine clayey deposits filling the basin, down to an average depth of about 35 m b.g.l., underlain by a structure with resistivity over 50 ! m up to about 600 ! m, ascribed to the Mesozoic carbonate bedrock; (ii) a system of two normal faults within the carbonate basement, extending down to the maximum best resolved depth of the order of 300 m b.g.l.; (iii) two wedge-shaped domains separating the opposite blocks of the faults with resistivity ranging between 30 ! m and 50 ! m and horizontal extent of the order of some tens of metres, likely filled with lacustrine sediments and embedded fine gravels. | en |
| dc.language.iso | English | en |
| dc.publisher.name | IOP PUBLISHING | en |
| dc.relation.ispartof | Journal of Geophysics and Engineering | en |
| dc.relation.ispartofseries | /6 (2009) | en |
| dc.subject | CSAMT method | en |
| dc.subject | 2D data processing and inversion | en |
| dc.subject | Southern Apennines chain | en |
| dc.subject | faulted depression | en |
| dc.title | Imaging 2D structures by the CSAMT method: application to the Pantano di S. Gregorio Magno faulted basin (Southern Italy) | en |
| dc.type | article | en |
| dc.description.status | Published | en |
| dc.type.QualityControl | Peer-reviewed | en |
| dc.description.pagenumber | 120–130 | en |
| dc.subject.INGV | 04. Solid Earth::04.02. Exploration geophysics::04.02.04. Magnetic and electrical methods | en |
| dc.identifier.doi | 10.1088/1742-2132/6/2/003 | en |
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| dc.description.obiettivoSpecifico | 2.6. TTC - Laboratorio di gravimetria, magnetismo ed elettromagnetismo in aree attive | en |
| dc.description.journalType | JCR Journal | en |
| dc.description.fulltext | reserved | en |
| dc.contributor.author | Troiano, A. | en |
| dc.contributor.author | Di Giuseppe, M. G. | en |
| dc.contributor.author | Petrillo, Z. | en |
| dc.contributor.author | Patella, D. | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
| dc.contributor.department | Department of Physical Sciences, University Federico II, Naples, Italy | en |
| item.openairetype | article | - |
| item.cerifentitytype | Publications | - |
| item.languageiso639-1 | en | - |
| item.grantfulltext | restricted | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | With Fulltext | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
| crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
| crisitem.author.dept | Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy | - |
| crisitem.author.orcid | 0000-0001-9071-0900 | - |
| crisitem.author.orcid | 0000-0003-4573-131X | - |
| crisitem.author.orcid | 0000-0001-6521-9634 | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.classification.parent | 04. Solid Earth | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
| Appears in Collections: | Article published / in press | |
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| TroDiG Pet - 2009.pdf | 1.94 MB | Adobe PDF |
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