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Start Over Author "Panza, Giuliano" Journal terra nova
12 results on '"Panza, Giuliano"'

3. Caveats on tomographic images

Author

Foulger, Gillian R., primary, Panza, Giuliano F., additional, Artemieva, Irina M., additional, Bastow, Ian D., additional, Cammarano, Fabio, additional, Evans, John R., additional, Hamilton, Warren B., additional, Julian, Bruce R., additional, Lustrino, Michele, additional, Thybo, Hans, additional, and Yanovskaya, Tatiana B., additional

Published
2013
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9. Imaging a relic of complex tectonics: the lithosphere-asthenosphere structure in the Eastern Mediterranean.

Author

ElGabry, Mohamed N., Panza, Giuliano Francesco, Badawy, Ahmed A., and Korrat, Ibrahim M.

Subjects
*STRUCTURAL geology, *LITHOSPHERE, *GRAVITY anomalies, *DISPERSION (Chemistry), *SEDIMENTARY rocks
Abstract

Terra Nova, 25, 102-109, 2013 Abstract The crust and upper mantle structure of the Eastern Mediterranean is investigated through the nonlinear inversion of Raleigh wave dispersion curves extracted from broadband records in the region along two profiles crossing the Hellenic and Cyprian arcs. Corresponding density models are constructed, consistent with the observed gravity anomalies. The modelled profiles exhibit a continental crust type overlain by a thick sedimentary cover and underlain by a thick lithospheric mantle. The lithosphere-asthenosphere system exhibits features, which suggest the presence of upducted asthenosphere exhumed to the north of the Hellenic arc, where the slab extension is limited to depths of about 220 km. [ABSTRACT FROM AUTHOR]

Published
2013
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12. Structure and rheology of lithosphere in Italy and surrounding

Author

Giuliano F. Panza, R. Raykova, Panza, Giuliano, and Raykova, R.

Subjects
Litosphere, Inversion (geology), Cellular models, Geology, Crust, Geophysics, Induced seismicity, Non linear inversion, Cellular model, Rheology, Brittleness, Lithosphere, Upper crust, Earthquake energy, Seismology
Abstract

We define the structure and rheology of the lithosphere in Italy and surrounding, combining the cellular velocity models derived from nonlinear tomographic inversion with the distribution vs. depth of hypocentres to assess the brittle properties of the Earth’s crust. We average, over cells sized 1×1 degree, the mechanical properties of the uppermost 60 km of the Earth, along with seismicity, grouping hypocentral depths in 4-km intervals. For most of the cells, the earthquake energy is concentrated in the upper crust (4–12 km). For some regions, where orogenic processes occur, the release of earthquake energy is shallower and limited to the uppermost 10 km of the crust. Ambiguities in the structural models are minimized considering the hypocentral distribution, mainly to define the location of the Moho boundary, when its identification, based on shear-wave velocities, is not straight- forward.

Published
2008

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