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2. Structure and physical properties of the tectosphere in the metastable Europe.

Author

Accaino, F., Cazzaro, R., Cernobori,, L., Costa, G., Della Vedova, B., Kravania, S., Marson, I., Nicolich, R., Panza, G. F., Suhadolc, P., Sarao’, A., Pellis, G., Romanelli, F., Vaccari, F., and Velicogna, I.

Subjects
Cenozoic, Europe, Fennoscandia, glacial geology, glacial rebound, ice sheets, inverse problem, isostatic rebound, lateral heterogeneity, mantle, one-dimensional models, Pleistocene, Quaternary, simulation, two-dimensional models, uplifts, viscosity
Abstract

The Earth's structure and the geod) nam ic processes that originate it are strictly interconnected: an accurate knowledge of the Earth·s structure and its physical properties is fundamental for the understanding of the dynamics of our planet and critical for realistic simulations of seismic ground motion. On the other side the separation and the definition of the different dynamic processes acting in a certain area help to better understand the structure and the physical properties of the investigated region. In recent years much emphasis has been given to the inversion or observed phase and waveform data for the best fitting set or model parameters at a variety of scale-lengths.

Published
1999

7. Anisotropy estimate from vertical (VSV) and horizontal (VSH) components of S-wave velocity using ray-based tomogra.

Author

BÖHM, G., ACCAINO, F., and DA COL, F.

Subjects
*ANISOTROPY, *SHEAR waves, *VELOCITY, *TOMOGRAPHY, *AZIMUTH
Abstract

The acquisition of S-wave seismic data, separating SH (orthogonal to the seismic line) and SV (parallel to the seismic line) wavefields on the same seismic line, is not so frequent. However, this type of acquisition allows obtaining important information on the investigated area; in particular the anisotropy of the sediments, which can be detected from the differences between the corresponding two velocity fields. In this work, we analysed the SV- and SH-wave data in order to answer two questions: how can we estimate anisotropy from the comparison of the velocities of the SV and SH wavefields? What information can be obtained about the dip and strike angles of the anisotropic layers from this analysis? For this purpose, we used the travel time tomography to obtain the two velocity fields (VSV and VSH) and to exploit the computed ray paths from which we can know the directions of each ray segment crossing the model, associated with each VS component. We, then, used them, together with the with the VSV/VSH values obtained from the tomography, to estimate the anisotropy and the orientation of the anisotropic layer, defined by the slope (dip) and the azimuth angle (strike). Furthermore, we tried to define a possible relationship between the VSV and VSH components with the anisotropy parameters, the direction of the rays and the geometry of the anisotropic layer. [ABSTRACT FROM AUTHOR]

Published
2022
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14. Thermal State and concentration of gas hydrate and free gas of Coyhaique, Chilean Margin

Author

Vargas Cordero, I., Tinivella, U., Accaino, F., Loreto, M. F., Fanucci, Francesco, Vargas Cordero, I., Tinivella, U., Accaino, F., Loreto, M. F., and Fanucci, Francesco

Subjects
Gas Hydrate, BSR, Seismic velocity, Chilean Margin
Abstract

In the last decades gas hydrate occurrence along the Chilean continental margin has been well documented. In order to better define the seismic character of the hydrate-bearing sediments, we per-formed a detailed velocity analysis by using the pre-stack depth migration on part of multichannel reflection seismic line RC2901-734 located offshore Coyhaique. The velocity model shows a hydrate bearing layer above the BSR, with high velocity (1700e2200 ms#1) and maximumthickness of 250 mand a free gas bearing layer below the BSR, characterized by low velocity (1250e1400 ms#1). A weak reflector at about 70 m below the BSR marks the base of the second layer. By knowing the BSR depth, the seafloor depth, and the sea bottom temperature, the geothermal gradient was estimated. The resulting gradient varies from 35 to 95 !C km#1, with highest values at the structural high, and the lowest values located in the accretionary prism and in the fore arc basin. In order to quantify the amount of gas phase, the velocity model was converted into a gas-phase concentration model by using a theoretical approach. The results indicate that highest concentrations of gas hydrates, up to 23% of the total volume, are located in the fore-arc basin, and that highest concentration of free gas, up to 3% of the total volume, are located at the structural high, which may be considered as a natural trap for migrating fluids. Average concentrations are equal to 12% and 1% of total volume for gas hydrate and free gas, respectively.

Published
2010

15. PROGETTO SIRIPRO: ELABORAZIONE ED ANALISI DI DATI GEOFISICI

Author

Accaino, F, Giustinianei, M, Tinivella, U, Zanolla, C, Nicolich, R, CATALANO, Raimondo, SULLI, Attilio, VALENTI, Vera, Accaino, F, Giustinianei, M, Tinivella, U, Zanolla, C, Nicolich, R, Catalano, R, Sulli, A, and Valenti, V

Subjects
seismic reflection data
Published
2010

16. PROGETTO SIRIPRO: ELABORAZIONE ED ANALISI DEI DATI SISMICI

Author

ACCAINO, F, GIUSTINIANI, M, TINIVELLA, U, ZANOLLA, C, NICOLICH, R, CATALANO, Raimondo, SULLI, Attilio, VALENTI, Vera, ACCAINO, F, GIUSTINIANI, M, TINIVELLA, U, ZANOLLA, C, NICOLICH, R, CATALANO, R, SULLI, A, and VALENTI, V

Subjects
Settore GEO/02 - Geologia Stratigrafica E Sedimentologica, DATI SISMICI, PROGETTO SIRIPRO, PROFILO CROSTALE
Published
2009

17. A CRUSTAL SEISMIC PROFILE ACROSS SICILY: preliminary results

Author

Accaino, F, Di Marzo, L, Giustiniani, M, Tinivella, U, Nicolich, R, Sulli, A, Valenti, V, Manetti, P., CATALANO, Raimondo, Accaino, F, Catalano, R, Di Marzo, L, Giustiniani, M, Tinivella, U, Nicolich, R, Sulli, A, Valenti, V, and Manetti, P

Subjects
seismic reflection, gravimetry
Published
2009

20. PROGETTO SIRIPRO: ANALISI NON-CONVENZIONALE DEI DATI SISMICI

Author

TINIVELLA, U, ACCAINO, F, GIUSTINIANI, M, NICOLICH, R, CATALANO, Raimondo, TINIVELLA, U, ACCAINO, F, GIUSTINIANI, M, NICOLICH, R, and CATALANO, R

Subjects
Settore GEO/02 - Geologia Stratigrafica E Sedimentologica, DATI SISMICI, PROGETTO SIRIPRO
Published
2009

21. PROGETTO SIRIPRO: INTERPRETAZIONE GEOLOGICA PRELIMINARE DEL PROFILO SISMICO CROSTALE

Author

SULLI, Attilio, CATALANO, Raimondo, ACCAINO, F, VALENTI, Vera, TINIVELLA, U, ALBANESE, Cinzia, NICOLICH, R, MANETTI, P., SULLI, A, CATALANO, R, ACCAINO, F, VALENTI, V, TINIVELLA, U, ALBANESE, C, NICOLICH, R, and MANETTI, P

Subjects
Settore GEO/02 - Geologia Stratigrafica E Sedimentologica, INTERPRETAZIONE GEOLOGICA, PROFILO SISMICO CROSTALE
Published
2009

22. Preliminary results of a crustal seismic profile across Sicily (Italy)

Author

CATALANO, Raimondo, SULLI, Attilio, PEPE, Fabrizio, VALENTI, Vera, AVELLONE, Giuseppe, BASILONE, Luca, Accaino F, Nicolich R, Giustiniani M, Manetti P., and Catalano R, Sulli A, Accaino F, Nicolich R, Pepe f, Giustiniani M, Valenti V, Avellone G, Basilone L, Manetti P

Subjects
Settore GEO/02 - Geologia Stratigrafica E Sedimentologica, sicilian fold and thrust belt, seismic interpretation
Published
2008

35. Metodologie innovative per la caratterizzazione degli acquiferi

Author

Nieto, D. Y., Giustiniani, M., Accaino, F., Affatato, A., Baradello, L., Marin, E., Picotti, S., Santarato, Giovanni, Tinivella, U., and Vaccaro, Carmela

Subjects
Pianura Veneto Friulana, risorgive, qualità delle acque, acquiferi, Ambientale
Published
2011

36. Structure and physical properties of the tectosphere in the metastable Europe

Author

ACCAINO F., R. CAZZARO, L. CERNOBORI, B. DELLA VEDOVA, S. KRAVANIA, R. NICOLICH, A. SARA, G. PELLIS, F. ROMANELLI, F. VACCAI, I. VELICOGNA, COSTA, GIOVANNI, MARSON, IGINIO, PANZA, GIULIANO, SUHADOLC, PETER, VACCARI, FRANCO, Accaino, F., R., Cazzaro, L., Cernobori, Costa, Giovanni, B., DELLA VEDOVA, S., Kravania, Marson, Iginio, R., Nicolich, Panza, Giuliano, Suhadolc, Peter, A., Sara, G., Pelli, F., Romanelli, F., Vaccai, I., Velicogna, and Vaccari, Franco

Published
1999

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