%0 Journal Article %1 nisii_etal:2004 %A Nisii, Vincenzo %A Zollo, Aldo %A Iannaccone, Giovanni %D 2004 %J Bulletin of the Seismological Society of America %K geophysics seismics %N 5 %P 1842--1849 %R 10.1785/012003063 %T Depth of a midcrustal discontinuity beneath Mt. Vesuvius from the stacking of reflected and converted waves on local earthquake records %U http://dx.doi.org/10.1785/012003063 %V 94 %X We have developed a technique based on the move-out and stack of reflected seismic phases from local earthquake seismograms. For a given interface depth and a velocity model, the theoretical travel times of reflected/converted phases in a 1D medium are computed and used to align in time the vertical-component microearthquake records collected by a local seismic network. The locations and origin times of events are preliminarily estimated from P and S arrival times. Different seismic gathers are obtained for each considered reflected/converted phase at that interface, and the best interface depth is chosen as the one that maximizes the value of a semblance function computed on moved-out records.This method has been applied to seismic records of microearthquakes that occur at Mt. Vesuvius volcano. The analysis confirms the evidence for an 8 to 10-km-deep seismic discontinuity beneath the volcano, which was previously identified, by migration of active seismic data, as the roof of an extended magmatic sill. 10.1785/012003063

@article{nisii_etal:2004, abstract = {We have developed a technique based on the move-out and stack of reflected seismic phases from local earthquake seismograms. For a given interface depth and a velocity model, the theoretical travel times of reflected/converted phases in a 1D medium are computed and used to align in time the vertical-component microearthquake records collected by a local seismic network. The locations and origin times of events are preliminarily estimated from P and S arrival times. Different seismic gathers are obtained for each considered reflected/converted phase at that interface, and the best interface depth is chosen as the one that maximizes the value of a semblance function computed on moved-out records.This method has been applied to seismic records of microearthquakes that occur at Mt. Vesuvius volcano. The analysis confirms the evidence for an 8 to 10-km-deep seismic discontinuity beneath the volcano, which was previously identified, by migration of active seismic data, as the roof of an extended magmatic sill. 10.1785/012003063}, added-at = {2012-09-01T13:08:21.000+0200}, author = {Nisii, Vincenzo and Zollo, Aldo and Iannaccone, Giovanni}, biburl = {https://www.bibsonomy.org/bibtex/25eb76d53ab7dbb9b7493018c20eb29bc/nilsma}, day = 1, doi = {10.1785/012003063}, interhash = {63a93da34ef10172a85c7639491ead97}, intrahash = {5eb76d53ab7dbb9b7493018c20eb29bc}, journal = {Bulletin of the Seismological Society of America}, keywords = {geophysics seismics}, month = oct, number = 5, pages = {1842--1849}, timestamp = {2021-02-09T13:27:42.000+0100}, title = {Depth of a midcrustal discontinuity beneath Mt. Vesuvius from the stacking of reflected and converted waves on local earthquake records}, url = {http://dx.doi.org/10.1785/012003063}, volume = 94, year = 2004 }