Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/2045
DC Field | Value | Language |
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dc.contributor.authorall | Improta, L.; Dipartimento di Fisica, Università di Napoli, Napoli, Italia | en |
dc.contributor.authorall | Zollo, A.; Dipartimento di Fisica, Università di Napoli, Napoli, Italia | en |
dc.contributor.authorall | Bruno, P. P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Herrero, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Villani, F.; Dipartimento di Scienze della terra, Università di Napoli, Napoli, Italia | en |
dc.date.accessioned | 2007-02-08T10:39:25Z | en |
dc.date.available | 2007-02-08T10:39:25Z | en |
dc.date.issued | 2003 | en |
dc.identifier.uri | http://hdl.handle.net/2122/2045 | en |
dc.description.abstract | A high-resolution multi-fold wide-angle seismic survey carried out across the Irpinia fault, Southern Italy, yields new information about the shallow structure of this normal fault that was reactivated in 1980. The fault zone is imaged to a depth of about 60 m by using a non-linear tomographic technique that is specially designed to image strongly heterogeneous media. Results confirm the location of the fault, as previously inferred by a trench excavated in soft soils, and clearly delineates a 30–35 m step in the bedrock. This single step is indicative of a narrow fault zone, which corresponds upward to warped soils exposed in the trench, thus demonstrating that the near-surface warping is directly related to a brittle faulting in the bedrock. Assuming that the vertical slip rate yielded by paleoseismic data (0.25–0.35 mm/yr) has been constant since the fault’s inception, the latter should date back to about 100–140 kys ago. Such a young age may explain why the Irpinia fault is not associated with evident, large-scale geomorphic indicators of its activity. | en |
dc.format.extent | 436761 bytes | en |
dc.format.mimetype | application/pdf | en |
dc.language.iso | English | en |
dc.relation.ispartof | Geophysical Research Letters | en |
dc.relation.ispartofseries | 30/10-1494 (2003) | en |
dc.subject | computational methods, seismic | en |
dc.subject | tomography | en |
dc.subject | paleoseismology | en |
dc.subject | seismic hazard assessment and prediction | en |
dc.subject | fractures and faults | en |
dc.subject | surface faulting | en |
dc.title | High-resolution seismic tomography across the 1980 (Ms 6.9) Southern Italy earthquake fault scarp | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy | en |
dc.identifier.doi | 10.1029/2003GL017077, 2003 | en |
dc.relation.references | Amato, A., and P. Montone, Present day stress field and active tectonics in southern peninsular Italy, Geophys. J. Int., 130, 519– 534, 1997. Ascione, S., A. Cinque, L. Improta, and F. Villani, Late quaternary faulting within the Southern Apennines seismic belt: New data from the Mt. Mar-zano area (Southern Italy), Quaternary Int., 99-101-102, 27– 41, 2003. D’Addezio, G., D. Pantosti, and G. Valensise, Paleoearthquakes along the Irpinia fault at the Pantano di San Gregorio Magno (southern Italy), Quaternario, 4(1a), 121– 136, 1991. Dolan, J. F., and T. L. Pratt, High resolution seismic reflection profiling of the Santa Monica fault zone, West Los Angeles, California, Geophys. Res. Lett., 24(16), 2051– 2054, 1997. Guadagno, F. M., and C. Nunziata, Seismic velocity of fractured carbonate rocks (Southern Apennines Italy), Geophys. J. Int., 113, 739– 746, 1993. Herrero, A., L. Improta, A. Zollo, P. Dell’Aversana, and S. Morandi, 2-D Nonlinear traveltime tomography by multi-scale search: Imaging an over-thrust structure in the Southern Apennines, AGU 2000 Fall Meeting, Eos Trans. AGU, 81, 418, 910, 2000. Improta, L., A. Zollo, A. Herrero, M. R. Frattini, J. Virieux, and P. Dell’Aversana, Seismic imaging of complex structures by non-linear traveltime inversion of dense wide-angle data: Application to a thrust belt, Geophys. J. Int., 151, 264–278, 2002. Jackson, J. A., and D. P. McKenzie, The relationship between plate motions and seismic moment tensor, and the rates of active deformation in the Mediterranean and Middle East, Geophys. J., 93, 45– 73, 1988. Mazzotti, A. P., E. Stucchi, G. L. Fradelizio, L. Zanzi, and P. Scandone, Seismic exploration in complex terrains: A processing experience in the Southern Apennines, Geophysics, 65(5), 1402–1417, 2000. Miller, K. C., S. H. Harder, D. C. Adams, and T. O’Donnell, Integrating high-resolution refraction data into near-surface seismic reflection data processing and interpretation, Geophysics, 63, 1339– 1347, 1998. Morey, D., and G. T. Schuster, Paleoseismicity of the Oquirrh fault, Utah, from shallow seismic tomography, Geophys. J. Int., 138, 25–35, 1999. Pantosti, D., and G. Valensise, Faulting mechanism and complexity of the November 23, 1980, Campania-Lucania earthquake, inferred from sur-face observations, J. Geophys. Res., 95(15), 319– 341, 1990. Pantosti, D., D. P. Schwartz, and G. Valensise, Paleoseismolgy along the 1980 surface rupture of the Irpinia fault: Implications for earthquake recurrence in the Southern Apennines, Italy, J. Geophys. Res., 98(B4), 6561– 6577, 1993. Podvin, P., and I. Lecomte, Finite difference computation of traveltimes in very contrasted velocity model: A massively parallel approach and its associated tools, Geophys. J. Int., 105, 271–284, 1991. Schwartz, D. P., and K. J. Coppersmith, Fault behavior and characteristic earthquake: Examples from the Wasatch and San Andreas fault zones, J. Geophys. Res., 89, 5681– 5698, 1984. | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Improta, L. | en |
dc.contributor.author | Zollo, A. | en |
dc.contributor.author | Bruno, P. P. | en |
dc.contributor.author | Herrero, A. | en |
dc.contributor.author | Villani, F. | en |
dc.contributor.department | Dipartimento di Fisica, Università di Napoli, Napoli, Italia | en |
dc.contributor.department | Dipartimento di Fisica, Università di Napoli, 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 | Dipartimento di Scienze della terra, Università di Napoli, Napoli, Italia | 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 ONT, Roma, 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 Roma1, Roma, Italia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia | - |
crisitem.author.orcid | 0000-0003-0952-3978 | - |
crisitem.author.orcid | 0000-0002-8191-9566 | - |
crisitem.author.orcid | 0000-0003-2622-3037 | - |
crisitem.author.orcid | 0000-0001-5633-5852 | - |
crisitem.author.orcid | 0000-0001-7133-0136 | - |
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.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 | - |
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