Abstract
From the data of a microseismic survey of the Lanzarote Island territory (Canary Archipelago) we obtained a microseisms amplitude distribution in the frequency range 0.3–12.5 Hz. We found a distinguished anomaly such as an amplitude depression, whose size and magnitude depend on the frequency. After studying the statistical and polarization properties of microseism signals we proposed a model explaining this depression, based on the presence of a rigid intrusive body in the center of the island. Results of our survey coincided well with independent detailed gravity survey results whose interpretation also implies the presence of intrusion. We estimated shear-wave velocity for the rocks of intrusion and for surrounding rocks using microseismic data.
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Gorbatikov, A., Kalinina, A., Volkov, V. et al. Results of Analysis of the Data of Microseismic Survey at Lanzarote Island, Canary, Spain. Pure appl. geophys. 161, 1561–1578 (2004). https://doi.org/10.1007/s00024-004-2521-6
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DOI: https://doi.org/10.1007/s00024-004-2521-6