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  • Applied geophysics  (15)
  • 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy  (3)
  • 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis  (3)
  • JSTOR Archive Collection Business II
  • Seismic stratigraphy
  • Wiley  (12)
  • Am. Assoc. Petrol. Geologists  (8)
  • Soc. Professional Well Log Analysts  (6)
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Keywords
  • 1
    Publication Date: 2017-04-04
    Description: We present the first application of a time reverse location method in a volcanic setting, for a family of long-period (LP) events recorded on Mt Etna. Results are compared with locations determined using a full moment tensor grid search inversion and cross-correlation method. From 2008 June 18 to July 3, 50 broad-band seismic stations were deployed on Mt Etna, Italy, in close proximity to the summit. Two families of LP events were detected with dominant spectral peaks around 0.9 Hz. The large number of stations close to the summit allowed us to locate all events in both families using a time reversal location method. The method involves taking the seismic signal, reversing it in time, and using it as a seismic source in a numerical seismic wave simulator where the reversed signals propagate through the numerical model, interfere constructively and destructively, and focus on the original source location. The source location is the computational cell with the largest displacement magnitude at the time of maximum energy current density inside the grid. Before we located the two LP families we first applied the method to two synthetic data sets and found a good fit between the time reverse location and true synthetic location for a known velocity model. The time reverse location results of the two families show a shallow seismic region close to the summit in agreement with the locations using a moment tensor full waveform inversion method and a cross-correlation location method.
    Description: Published
    Description: 452-462
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Volcano seismology ; Computational seismology ; Wave propagation ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
    Publication Date: 2020-02-24
    Description: We propose a new quantitative approach for the joint interpretation of velocity and attenuation tomography images, performed through the lateral separation of scattering and intrinsic attenuation. The horizontal P-wave scattering attenuation structure below Campi Flegrei Caldera (CFC) is imaged using the autocorrelation functions (ACF) of P-wave vertical velocity fluctuations. Cluster analysis (CA) is then applied to interpret the images derived from ACF and the available P-wave total attenuation images at 2000m quantitatively. The analysis allows the separation of intrinsic and scattering attenuation on a 2-D plane, adding new geophysical constraints to the present knowledge about this volcanic area. The final result is a new, quantitative image of the past and present tectonic and volcanological state of CFC. P-wave intrinsic dissipation dominates in an area approximately located under the volcanic centre of Solfatara, as expected in a region with a large presence of fluids and gas. A north–south scattering attenuation region is mainly located below the zone of maximum uplift in the 1982–1984 bradiseismic crisis, in the sea side of the Pozzuoli bay, but also extending below Mt Nuovo. This evidence favours the interpretation in terms of a hard but fractured body, contoured by strong S-wave scatterers, corresponding to the Caldera rim: the region is possibly a section of the residual magma body, associated with the 1538 eruption of Mt Nuovo.
    Description: Published
    Description: 1304-1310
    Description: 3.1. Fisica dei terremoti
    Description: JCR Journal
    Description: reserved
    Keywords: Probability distributions ; Seismic attenuation ; Seismic tomography ; Statistical seismology ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
    Publication Date: 2017-04-04
    Description: In this study the attenuation mechanism of seismic wave energy in north central Italy is estimated using low-magnitude earthquake local data recorded at six stations managed by INGV. Most of the analysed events are located along the Alpine chain in the zone of Iseo and Garda lakes, while a minor part in the Po valley. The zone investigated is characterized by the occurrence of significantly intense earthquakes (magnitude up to 6.6) the most recent occurred in 2004 close to the city of Sal`o on the coast of the Garda lake (Mw = 5.0). Due to the high population density and presence of industrial activity the investigated area is characterized by a high seismic risk. First, the ordinary Multiple Lapse Time Window Analysis (MLTWA) method is applied in the assumption of uniformvelocity and scattering and the couple of B0, the seismic albedo and Le−1, the extinction length inverse (corresponding to the total attenuation coefficient) is calculated in the frequency bands of 1.5, 3, 6 and 12 Hz. To retrieve more realistic estimates, the obtained values of B0 and Le−1 are corrected taking into account the effects of a depth-dependent earth model, consisting of an earth structure characterized by a transparent upper mantle and a heterogeneous crust. We find that the corrected intrinsic and scattering attenuation parameters (which are proportional to the inverse of the intrinsic/scattering quality factors, QI−1 and Qs−1) are strongly frequency dependent, with a prevalence of scattering attenuation over the intrinsic dissipation. The corrected and uncorrected values of total Q are in agreement with the total Q values obtained with different approaches for the same area.
    Description: Published
    Description: 3.1. Fisica dei terremoti
    Description: JCR Journal
    Description: reserved
    Keywords: Seismic Attenuation ; Coda Waves ; Wave Scattering and Diffraction ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
    Publication Date: 2017-04-04
    Description: We investigate in detail the crustal layering of the ‘Val di Chiana Basin’ (Northern Apennines, Tuscany, Italy) through receiver functions and seismic anisotropy with hexagonal symmetry. The teleseismic data set is recorded in correspondence of a typical foreland basin resulting by the progressive eastward retreat of a regional-scale subduction zone trapped between two continents. We study the azimuthal variations of the computed and binned receiver functions associated to a harmonic angular analysis to emphasize the presence of the dipping and the anisotropic structures. The resulting S-wave velocity model shows interesting and new results for this area that we discuss in a regional geodynamic contest contributing to the knowledge of the structure of the forearc of the subduction zone. A dipping interface (N192°E strike, 18° dip) has been revealed at about 1.5 km depth, that separates the basin sediments and flysch from the carbonates and evaporites. Moreover, we interpret the two upper-crust anisotropic layers (at about 6 and 17 km depth) as the Hercynian Phyllites and Micaschists, of the Metamorphic Tuscan Basement. At relatively shallow depths, the presence of these metamorphic rocks causes the seismic anisotropy in the upper crust. The presence of shallow anisotropic layers is a new and interesting feature, first revealed in the study area. Beneath the crust–mantle transition (Moho), located about 28 km depth, our analysis reveals a 7-km-thick anisotropic layer.
    Description: Published
    Description: 545-556
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: reserved
    Keywords: Seismic anisotopy ; Computational Seismology ; Wave propagation ; Subduction zone process ; Crustal structure ; Europe ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
    Publication Date: 2017-04-04
    Description: We present the first application of a time reverse location method in a volcanic setting, for a family of long-period (LP) events recorded on Mt Etna. Results are compared with locations determined using a full moment tensor grid search inversion and cross-correlation method. From 2008 June 18 to July 3, 50 broad-band seismic stations were deployed on Mt Etna, Italy, in close proximity to the summit. Two families of LP events were detected with dominant spectral peaks around 0.9 Hz. The large number of stations close to the summit allowed us to locate all events in both families using a time reversal location method. The method involves taking the seismic signal, reversing it in time, and using it as a seismic source in a numerical seismic wave simulator where the reversed signals propagate through the numerical model, interfere constructively and destructively, and focus on the original source location. The source location is the computational cell with the largest displacement magnitude at the time of maximum energy current density inside the grid. Before we located the two LP families we first applied the method to two synthetic data sets and found a good fit between the time reverse location and true synthetic location for a known velocity model. The time reverse location results of the two families show a shallow seismic region close to the summit in agreement with the locations using a moment tensor full waveform inversion method and a cross-correlation location method.
    Description: In press
    Description: (11)
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Volcano seismology ; Computational seismology ; Wave propagation ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
    Publication Date: 2017-04-04
    Description: We present the surface wave dispersion results of the application of the ambient noise method to broad-band data recorded at 114 stations from the Istituto Nazionale di Geofisica e Vul- canologia (INGV) national broad-band network, some stations of the Mediterranean Very Broadband Seismographic Network (MedNet) and of the Austrian Central Institute for Me- teorology and Geodynamics (ZAMG). Vertical-component ambient noise data from 2005 October to 2007 March have been cross-correlated for station-pairs to estimate fundamental mode Rayleigh wave Green’s functions. Cross-correlations are calculated in 1-hr segments, stacked over periods varying between 3 months and 1.5 yr. Rayleigh wave group dispersion curves at periods from 8 to 44 s were determined using the multiple-filter analysis technique. The study region was divided into a 0.2◦ × 0.2◦ grid to invert for group velocity distribu- tions. Checkerboard tests were first carried out, and the lateral resolution was estimated to be about 0.6◦. The resulting group velocity maps from 8 to 36 s show the significant difference of the crustal structure and good correlations with known geological and tectonic features in the study region. The Po Plain and the Southern Alps evidence lower group veloci- ties due to soft alluvial deposits, and thick terrigenous sediments. Our results also clearly showed that the Tyrrhenian Sea is characterized with much higher velocities below 8 km than the Italian peninsula and the Adriatic Sea which indicates a thin oceanic crust beneath the Tyrrhenian Sea.
    Description: Published
    Description: 1242-1252
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: reserved
    Keywords: Tomography ; Surface waves and free oscillations ; Crustal structure ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 7
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    Soc. Professional Well Log Analysts
    In:  Extended abstract at the 37th Annual Logging Symposium of SPWLA, Denver, Soc. Professional Well Log Analysts, vol. 1, no. paper SPWLA 90-C, pp. M1-M4, (ISBN 3-933346-037)
    Publication Date: 1996
    Keywords: Physical properties of rocks ; Borehole geophys. ; Applied geophysics ; NMR ; NML ; Conference abstr.
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  • 8
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    Soc. Professional Well Log Analysts
    In:  Extended abstract at the 37th Annual Logging Symposium of SPWLA, Washington, D.C., Soc. Professional Well Log Analysts, vol. C 560, 183 pp., no. 57, pp. AA1-AA13, (ISBN 3-933346-037)
    Publication Date: 1996
    Keywords: Borehole geophys. ; Applied geophysics ; Data analysis / ~ processing ; Fluids ; Conference abstr.
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  • 9
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    Soc. Professional Well Log Analysts
    In:  Extended abstract at the 37th Annual Logging Symposium of SPWLA, Menlo Park, California, Soc. Professional Well Log Analysts, vol. 1034, no. 77-3, pp. Z1-Z13, (ISBN 3-933346-037)
    Publication Date: 1996
    Keywords: Borehole geophys. ; Applied geophysics ; Stress ; Data analysis / ~ processing ; Fluids ; Conference abstr.
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  • 10
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    Soc. Professional Well Log Analysts
    In:  Extended abstract at the 37th Annual Logging Symposium of SPWLA, Hannover, Soc. Professional Well Log Analysts, vol. C 560, 183 pp., no. 23, pp. N1-N13, (ISBN 3-933346-037)
    Publication Date: 1996
    Keywords: Physical properties of rocks ; Borehole geophys. ; Applied geophysics ; NMR ; NML ; Conference abstr.
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  • 11
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    Soc. Professional Well Log Analysts
    In:  Paper presented at the National SPWLA Convention, Tulsa, Oklahoma, Soc. Professional Well Log Analysts, vol. 10, no. GL-TR-89-0314, pp. 627-635
    Publication Date: 1994
    Keywords: Borehole geophys. ; Applied geophysics ; NML ; Fluids
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  • 12
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    Soc. Professional Well Log Analysts
    In:  Paper presented at the National SPWLA Convention, Midland, Texas, Soc. Professional Well Log Analysts, vol. 10, no. GL-TR-89-0314, pp. 627-635
    Publication Date: 1991
    Keywords: Borehole geophys. ; Applied geophysics ; NML ; Instruments ; Fluids
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  • 13
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    Am. Assoc. Petrol. Geologists
    In:  Professional Paper, Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 14, no. 16, pp. 527-548, (ISBN 0080419208)
    Publication Date: 1990
    Keywords: Applied geophysics ; Borehole geophys. ; Dipmeter, ~analysis ; Layers ; orientation
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  • 14
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    Am. Assoc. Petrol. Geologists
    In:  Professional Paper, Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 23, no. 16, pp. 498-526, (ISBN: 3-540-23712-7)
    Publication Date: 1990
    Keywords: Applied geophysics ; Borehole geophys. ; porosity ; conductivity
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  • 15
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    Am. Assoc. Petrol. Geologists
    In:  Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 37, no. 16, pp. 22-30, (ISBN 0080419208)
    Publication Date: 1990
    Keywords: Borehole geophys. ; Applied geophysics ; Review article ; porosity ; conductivity
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  • 16
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    Am. Assoc. Petrol. Geologists
    In:  Professional Paper, Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 14, no. 16, pp. 475-497, (ISBN 0080419208)
    Publication Date: 1990
    Keywords: Borehole geophys. ; Applied geophysics ; Dipmeter, ~analysis ; Layers ; orientation
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  • 17
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    Am. Assoc. Petrol. Geologists
    In:  Bull., Polar Proj. OP-O3A4, Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 14, no. 16, pp. 1-21, (ISBN: 3-540-23712-7)
    Publication Date: 1990
    Keywords: Borehole geophys. ; Applied geophysics ; Handbook of geophysics
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  • 18
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    Am. Assoc. Petrol. Geologists
    In:  Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 17, no. 16, pp. 645-654, (ISBN 0080419208)
    Publication Date: 1990
    Keywords: MWD ; LWD ; Borehole geophys. ; Applied geophysics ; Engineering geophys.
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  • 19
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    Am. Assoc. Petrol. Geologists
    In:  Bull., Open-File Rept., Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 10, no. 16, pp. 635-644, (ISBN 0080419208)
    Publication Date: 1990
    Keywords: Applied geophysics ; Borehole geophys. ; Seismics (controlled source seismology)
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  • 20
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    Am. Assoc. Petrol. Geologists
    In:  Professional Paper, Open-File Rept., Formation Evaluation I - Log Evaluation, Tulsa, Oklahoma, Am. Assoc. Petrol. Geologists, vol. 65, no. 16, pp. 591-609, (ISBN 1-86239-165-3, vi + 330 pp.)
    Publication Date: 1990
    Keywords: Applied geophysics ; Borehole geophys. ; Borehole Televiewer ; Layers ; orientation
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  • 21
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    Wiley
    In:  New York, 3rd Edition, 538 pp., Wiley, vol. 14, no. 1, pp. 1-40, (ISBN 3-7643-6675-3)
    Publication Date: 1987
    Keywords: Reflection seismics ; Textbook of geophysics ; Applied geophysics
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  • 22
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    Wiley
    In:  Chichester, Wiley, vol. 231, no. 3, pp. 2-203, (ISBN 0-470-02298-1)
    Publication Date: 1982
    Keywords: Data analysis / ~ processing ; Correlation ; Seismic stratigraphy ; Seismics (controlled source seismology)
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  • 23
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    Wiley
    In:  New York, Wiley, vol. 7, no. Publ. No. 12, pp. 127, (ISBN 1-58488-323-5)
    Publication Date: 1978
    Keywords: Seismic stratigraphy
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  • 24
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    Wiley | JSTOR | formerly Oxford University Press (OUP)
    Online: 10(1).1988 –
    Formerly as: Illinois Agricultural Economics; North Central Journal of Agricultural Economics; Review of Agricultural Economics  (1961–2009)
    Publisher: Wiley , JSTOR , formerly Oxford University Press (OUP)
    Print ISSN: 0191-9016 , 1058-7195 , 2040-5790
    Electronic ISSN: 1467-9353 , 2040-5804
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Economics
    Keywords: JSTOR Archive Collection Business II
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  • 25
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    Wiley | JSTOR
    Online: 78.1976 – (older than 6 years)
    Publisher: Wiley , JSTOR
    Print ISSN: 0347-0520
    Electronic ISSN: 1467-9442
    Topics: Economics
    Keywords: JSTOR Archive Collection Business II
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  • 26
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    Wiley | Financial Management Association International | JSTOR
    Online: 1(1).1972 – (older than 4 years)
    Publisher: Wiley , Financial Management Association International , JSTOR
    Print ISSN: 0046-3892
    Electronic ISSN: 1755-053X
    Topics: Economics
    Keywords: JSTOR Archive Collection Business II
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