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  • 05. General::05.02. Data dissemination::05.02.02. Seismological data  (7)
  • 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous  (3)
  • Antarctica  (3)
  • Earthquake catalog
  • TF III
Collection
Keywords
Publisher
Years
  • 1
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    European-Mediterranean regional centroid-moment tensors: 1997-2000 (2002)
    In:  Phys. Earth Plan. Int., Stockholm, Wissenschaftliche Buchgesellschaft, vol. 130, no. 1-2, pp. 71-101, pp. L15318, (ISSN: 1340-4202)
    Details
    Publication Date: 2002
    Keywords: Earthquake catalog ; Moment tensor ; Fault plane solution, focal mechanism ; PEPI ; Ekstroem ; Ekstrom ; Dziewonski
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    SKS splitting measurements and modelling in the key of a complex structures beneath Northern Apennines region. Workshop Meeting in Seismic Anisotropy and Geodynamics of the Lithosphere-Asthenosphere System (2006)
    In:  Trest, Czech Republic
    Details
    Publication Date: 2006
    Keywords: TF III ; Task Force III ; Lithosphere-Astenosphere Interactions
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    BIBLIOGRAPHY ILP
  • 3
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    Receiver Functions And Anisotropy in the Northern Apennines. Workshop Meeting in Seismic Anisotropy and Geodynamics of the Lithosphere-Asthenosphere System (2006)
    In:  Trest, Czech Republic
    Details
    Publication Date: 2006
    Keywords: TF III ; Task Force III ; Lithosphere-Astenosphere Interactions
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    BIBLIOGRAPHY ILP
  • 4
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    Shear wave splitting measurements in the Northern Apennines: results from RETREAT′s project. Workshop Meeting in Seismic Anisotropy and Geodynamics of the Lithosphere-Asthenosphere System (2006)
    In:  Trest, Czech Republic
    Details
    Publication Date: 2006
    Keywords: TF III ; Task Force III ; Lithosphere-Astenosphere Interactions
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    BIBLIOGRAPHY ILP
  • 5
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    Seismic Anisotropy beneath Northern Victoria Land from SKS Splitting Analysis (2005)
    Springer-Verlag, Berlin Heidelberg New York
    Details
    Publication Date: 2017-04-04
    Description: Abstract. Teleseismic data recorded by temporary and permanent stations located in the Northern Victoria Land region are analysed in order to identify the presence and location of seismic anisotropy. We work on data recorded by 24 temporary seismographic stations deployed between 1993 and 2000 in different zones of the Northern Victoria Land, and by the permanent very broad-band stations TNV located near the Italian Base M. Zucchelli. The temporary networks monitored an area extending from Terra Nova Bay towards the South beyond the David Glacier and up to the Indian Ocean northward. To better constrain our study, we also provide an analysis of data recorded by TNV in the same period of time and we take into account also SKS shear wave splitting measurements performed by Barruol and Hoffman (1999) on data recorded by DRV. This study, to be considered as preliminary, reveals the presence of seismic anisotropy below the study region, with a mainly NW-SE fast velocity direction below the Terra Nova Bay area and rather large delay times, that mean a deep rooted anisotropic layer.
    Description: Published
    Description: 153-160
    Description: open
    Keywords: Seismic anisotropy ; Antarctica ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book chapter
    Format: 783740 bytes
    Format: application/pdf
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  • 6
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    European-Mediterranean regional centroid-moment tensor catalog: solutions for years 2001 and 2002 (2006)
    Elsevier
    Details
    Publication Date: 2017-04-04
    Description: We present regional centroid-moment tensor (RCMT) solutions for 168 moderate-magnitude earthquakes that occurred in the European-Mediterranean region during 2001 and 2002. Events with moment magnitudes as low as 4.0 were successfully analyzed, although this low threshold is only achievable in regions with the best azimuthal coverage and with stations at a few hundred kilometers distance. Earthquakes with focal depths from 10 to more than 200 km were analyzed. Comparison with standard Harvard CMTs, when available, shows good agreement. The solutions shown in this paper represent an addition to the European-Mediterranean RCMT catalog that we are maintaining. The RCMT catalog now spans 6 years, from 1997 to 2002, and contains 420 solutions. We also outline the main seismic sequences that occurred in the European-Mediterranean region during 2001–2002.
    Description: MedNet Data Centre ORFEUS-MEREDIAN GEOFON IRIS
    Description: Published
    Description: 127-147
    Description: reserved
    Keywords: Seismicity ; Seismic moment tensors ; European-Mediterranean region ; 05. General::05.02. Data dissemination::05.02.02. Seismological data
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 1128414 bytes
    Format: application/pdf
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  • 7
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    Seismic Anisotropy Analysis in the Victoria Land Region (Antarctica) (2010)
    Details
    Publication Date: 2017-04-04
    Description: We present shear-wave splitting results obtained from analysis of core refracted teleseismic phases recorded by permanent and temporary seismographic stations located in the Victoria Land region (Antarctica). We used eigenvalue technique to linearize the rotated and shifted shear-wave particle motion, in order to determine the best splitting parameters. A well-scattered distribution of single shear-wave measurements has been obtained. Average values show clearly that dominant fast axis direction is NE-SW oriented, accordingly with previous measurements obtained around this zone. Only two stations, OHG and STAR show different orientations, with N-S and NNW-SSE main directions. On the basis of the periodicity of single shear-wave splitting measurements with respect to back-azimuths of events under study, we inferred the presence of lateral and vertical changes in the deep anisotropy direction. To test this hypothesis we have modelling waveforms using a cross-convolution technique in one and two anisotropic layer's cases. We obtained a significant improvement on the misfit in the double layer case for the cited couple of stations. For stations where a multi-layer structure does not fit, we looked for evidences of lateral anisotropy changes at depth through Fresnel zone computation. As expected, we find that anisotropy beneath the Transantarctic Mountains (TAM) is considerably different from that beneath the Ross Sea. This feature influences the measurement distribution for the two permanent stations TNV and VNDA. Our results show a dominant NE-SW direction over the entire region, but other anisotropy directions are present and find an interpretation when examined in the context of regional tectonics.
    Description: Submitted
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: open
    Keywords: Antarctica ; Shear-wave splitting ; Seismic Anisotropy ; Mantle processes ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
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  • 8
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    The Subduction Structure of the Northern Apennines: Results from the RETREAT Seismic Deployment (2007)
    Details
    Publication Date: 2017-04-04
    Description: The project Retreating-trench, extension, and accretion tectonics, RETREAT, is a multidisciplinary study of the Northern Apennines (www.geology.yale.edu/RETREAT/index.htm), is funded by the United States National Science Foundation (NSF) in collaboration with the Italian Istituto Nazionale di Geofisica e Vulcanologia (INGV) and the Grant Agency of the Czech Academy of Sciences (GAAV). The main goal of RETREAT is to develop a self-consistent dynamic model of syn-convergent extension, using the Northern Apennines as a natural laboratory. In the context of this project a passive seismological experiment was deployed in the fall of 2003 for a period of three years. RETREAT seismologists aim to develop a comprehensive understanding of the deep structure beneath the Northern Apennines, with particular attention on inferring likely patterns of mantle flow. Specific objectives of the project are the crustal and lithospheric thicknesses, the location and geometry of the Adriatic slab, and the distribution of seismic anisotropy laterally and vertically in the lithosphere and asthenosphere. The project is collecting teleseismic and regional earthquake data for 3 years. This contribution describes the RETREAT seismic deployment and reports on key results from the first year of the deployment. We confirm some prior findings regarding the seismic structure of central Italy, but our observations also highlight the complexity of the Northern Apennines subduction system.
    Description: Submitted
    Description: open
    Keywords: Apennines: ; Seismic ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
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  • 9
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    Abrupt change in mantle fabric across northern Apennines detected using seismic anisotropy (2007)
    AGU
    Details
    Publication Date: 2017-04-04
    Description: We estimated SKS splitting parameters for 18 earthquakes observed over 2 years on a dense linear seismometer array crossing the Apennines orogen (Northern Italy). An abrupt (within 30 km) change in fast polarization occurs near the crest of the Apennines. Southwest of the crest, fast polarization parallels the Apennines strike (WNW–ESE), rotating to EW orientation near the Tyrrhenian Sea. Northeast of the crest, toward the Po Plain, fast polarization is NNE–SSW, roughly normal to the orogen’s strike. Delay times (0.6–2.9s) do not show a remarkable pattern. Splitting parameters beneath the Apennines argue against anisotropy restricted to the crust, and suggest that the mantle region deformed by Apennines slab rollback is spatially limited. We hypothesize that the rollback process has been uneven, evolving to a contortion of the northern edge of the Apennines slab, and perhaps incipient detachment. Lithospheric anisotropy beneath the Po-Plain may also be significant.
    Description: Published
    Description: L07308
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: JCR Journal
    Description: reserved
    Keywords: anisotropy ; subduction ; 05. General::05.02. Data dissemination::05.02.02. Seismological data
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 10
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    Seismic Anisotropy in the Victoria Land Region (Antarctica) (2010)
    Details
    Publication Date: 2017-04-04
    Description: We present shear-wave splitting results obtained from analysis of core refracted teleseismic phases recorded by permanent and temporary seismographic stations located in the Victoria Land region (Antarctica). We used eigenvalue technique to linearize the rotated and shifted shear-wave particle motion, in order to determine the best splitting parameters. A well-scattered distribution of single shear-wave measurements has been obtained. Average values show clearly that dominant fast axis direction is NE-SW oriented, accordingly with previous measurements obtained around this zone. Only two stations, OHG and STAR show different orientations, with N-S and NNW-SSE main directions. On the basis of the periodicity of single shear-wave splitting measurements with respect to back-azimuths of events under study, we inferred the presence of lateral and vertical changes in the deep anisotropy direction. To test this hypothesis we have modelling waveforms using a cross-convolution technique in one and two anisotropic layer's cases. We obtained a significant improvement on the misfit in the double layer case for the cited couple of stations. For stations where a multi-layer structure does not fit, we looked for evidences of lateral anisotropy changes at depth through Fresnel zone computation. As expected, we find that anisotropy beneath the Transantarctic Mountains (TAM) is considerably different from that beneath the Ross Sea. This feature influences the measurement distribution for the two permanent stations TNV and VNDA. Our results show a dominant NE-SW direction over the entire region, but other anisotropy directions are present and find an interpretation when examined in the context of regional tectonics.
    Description: Submitted
    Description: 3.3. Geodinamica e struttura dell'interno della Terra
    Description: N/A or not JCR
    Description: open
    Keywords: Antarctica ; Seismic Anisotropy ; 04. Solid Earth::04.06. Seismology::04.06.07. Tomography and anisotropy ; 04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques ; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: manuscript
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