Real-time monitoring and massive inversion of source parameters of very long period seismic signals: An application to Stromboli Volcano, Italy

Geophysical Research Letters
By: , and 

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Abstract

We present a comprehensive processing tool for the real‐time analysis of the source mechanism of very long period (VLP) seismic data based on waveform inversions performed in the frequency domain for a point source. A search for the source providing the best‐fitting solution is conducted over a three‐dimensional grid of assumed source locations, in which the Green's functions associated with each point source are calculated by finite differences using the reciprocal relation between source and receiver. Tests performed on 62 nodes of a Linux cluster indicate that the waveform inversion and search for the best‐fitting signal over 100,000 point sources require roughly 30 s of processing time for a 2‐min‐long record. The procedure is applied to post‐processing of a data archive and to continuous automatic inversion of real‐time data at Stromboli, providing insights into different modes of degassing at this volcano.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Real-time monitoring and massive inversion of source parameters of very long period seismic signals: An application to Stromboli Volcano, Italy
Series title Geophysical Research Letters
DOI 10.1029/2005GL024703
Volume 33
Issue 4
Year Published 2006
Language English
Publisher American Geophysical Union
Contributing office(s) Volcano Hazards Program
Description 5 p.
Country Italy
Other Geospatial Stromboli volcano