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  • Modelling  (3)
  • 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology  (2)
  • American Geophysical Union  (5)
  • Annual Reviews
  • Springer Nature
  • 2005-2009  (2)
  • 1990-1994  (3)
  • 1980-1984
  • 2007  (2)
  • 1994  (3)
  • 1980
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  • 2005-2009  (2)
  • 1990-1994  (3)
  • 1980-1984
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  • 1
    facet.materialart.
    Unbekannt
    Interaction of seismic and airwaves recorded at Stromboli volcano (2007)
    American Geophysical Union
    Details
    Publikationsdatum: 2017-04-04
    Beschreibung: Explosion-quake seismograms recorded at Stromboli show that seismic phases with a high-amplitude and high-frequency content propagate with a velocity of approximately 330 m/s - the sound speed. The analysis of seismograms, recorded at a distance of 500 m from one of the three active vents, shows for the first onset a low frequency and particle motion characteristics of a p-wave, which loses its longitudinal polarization with the onset of the air-wave. Recording the explosion-quake simultaneously with a microphonewe would ascertain that the high frequency onset coincides with the air-wave's. In order to better understand the seismic wavefield generated by the atmospheric pressure, we performed a controlled source experiment at Stromboli using a seismic gun. Seismograms with the same two phases and particle motions comparable with the volcanic seismic data were obtained. A second experiment demonstrated, that the air-wave propagates at least in the uppermost 1m of the gound. We suggest that the seismic source of the corresponding seismograms is an explosion at the top of the magma column and conclude that the p- and air-waves are both generated in the same point and at the same time.
    Beschreibung: Published
    Beschreibung: 65-68
    Beschreibung: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Beschreibung: JCR Journal
    Beschreibung: reserved
    Schlagwort(e): volcano seismology ; Stromboli ; air wave ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 2
    facet.materialart.
    Unbekannt
    Moment-tensor inversion of LP events recorded on Etna in 2004 using constraints obtained from wave simulation tests (2007)
    American Geophysical Union
    Details
    Publikationsdatum: 2017-04-04
    Beschreibung: The persistent occurrence of long period (LP) events at Mt Etna became apparent with the installation of the first fixed broad-band seismic network in late 2003. Repeating similar LP events from Nov. ‘03 to Sept. ‘04 indicate a non-destructive source process. We perform moment tensor (MT) inversions on a stacked high S/N ratio representative LP signal, conducting a grid search for the source geometry and L2-inversion for the source time function. Results indicate a NNW-SSE oriented resonating sub-vertical crack as the most probable source. This result is consistent with deformation and GPS observations. Crucial to this result are constraints imposed by detailed 3D full waveform numerical simulations in a heterogeneous tomographic model with topography, and in particular a detailed assessment of the influence of very near surface velocity structure on LP signals. Pulsating gas injection is hypothesised as the most likely LP trigger.
    Beschreibung: Published
    Beschreibung: L22316
    Beschreibung: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Beschreibung: JCR Journal
    Beschreibung: reserved
    Schlagwort(e): Etna volcano ; moment tensor inversion ; LP activity ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology
    Repository-Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Materialart: article
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    ARTIKEL (OA)
  • 3
    facet.materialart.
    Unbekannt
    Seismicity modeling and earthquake prediction: A review (1994)
    American Geophysical Union
    In:  Professional Paper, Nonlinear Dynamics and Predictability of Geophysical Phenomena, Washington, American Geophysical Union, vol. 24, no. 231, pp. 7-13, (ISBN: 3-540-23712-7)
    Details
    Publikationsdatum: 1994
    Schlagwort(e): Modelling ; Earthquake precursor: prediction research ; Earthquake precursor: statistical anal. of seismicity ; criticality ; Review article ; Chaotic behaviour ; FractureT
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    BIBLIOGRAFIE SEISMOLOGIE
  • 4
    facet.materialart.
    Unbekannt
    The precursor of instability for nonlinear systems and its application to earthquake prediction - the load-unload response ratio theory (1994)
    American Geophysical Union
    In:  Professional Paper, Open-File Rept., Nonlinear Dynamics and Predictability of Geophysical Phenomena, Washington, American Geophysical Union, vol. 4, no. 2, pp. 55-60, (ISBN 0080419208)
    Details
    Publikationsdatum: 1994
    Schlagwort(e): Earthquake precursor: prediction research ; Non-linear effects ; Earthquake precursor: stresses ; Modelling ; Stress
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    BIBLIOGRAFIE SEISMOLOGIE
  • 5
    facet.materialart.
    Unbekannt
    Nonlinear dynamic modeling of earthquake prediction (1994)
    American Geophysical Union
    In:  Bull., Open-File Rept., Nonlinear Dynamics and Predictability of Geophysical Phenomena, Washington, American Geophysical Union, vol. 5, no. 16, pp. 81-89, (ISBN 1-86239-165-3, vi + 330 pp.)
    Details
    Publikationsdatum: 1994
    Schlagwort(e): Modelling ; Earthquake precursor: prediction research ; Earthquake precursor: models ; Chaotic behaviour
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    BIBLIOGRAFIE SEISMOLOGIE
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