Seismic and acoustic detection of a bolide airburst in the Gulf of Naples (southern Italy)

Details Seismic and acoustic detection of a bolide airburst in the Gulf of Naples (southern Italy) Seismic and acoustic detection of a bolide airburst in the Gulf of Naples (southern Italy)

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006jgrb..11110307d&link_type=abstract

Journal of Geophysical Research, Volume 111, Issue B10, CiteID B10307

Statistics

Computation

1

Planetary Sciences: Solar System Objects: Meteors, Computational Geophysics: Data Analysis: Algorithms And Implementation, Mathematical Geophysics: Inverse Theory, Atmospheric Processes: Acoustic-Gravity Waves, Seismology: Seismic Instruments And Networks (0935, 3025)

Scientific paper

On 10 September 2005 at 1711 LT (1511 UT) a loud boom was heard on the Ischia island. A clear seismic signal was also recorded by the seismic monitoring network of the Neapolitan volcanic areas (Ischia, Campi Flegrei, and Mount Vesuvius) and on a regional station (Mount Massico). On the basis of the seismic recordings and on acoustic phenomena reports, we relate this event to the atmospheric explosion (airburst) of a bolide about 15 km SW of Ischia at an elevation of about 11.5 km. The location has been obtained through nonlinear traveltime inversion in a realistic atmospheric model including wind effects. We show, using statistical estimators, how the traveltime pattern is due to both atmospheric winds and the bolide trajectory. Using the same reasoning we discard a human origin (supersonic jet or sea-air missile). In addition, we also propose a new algorithm for fast acoustic traveltime computation for a supersonic moving source.

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