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Monitoring Local Earthquakes in Central Italy Using 4C Single Station Data.

Authors
  • Simonelli, Andreino1
  • Desiderio, Matteo1
  • Govoni, Aladino2
  • De Luca, Gaetano2
  • Di Virgilio, Angela1
  • 1 Section of Pisa, Istituto Nazionale di Fisica Nucleare, 56123 Pisa, Italy. , (Italy)
  • 2 Istituto Nazionale di Geofisica e Vulcanologia, 00143 Roma, Italy. , (Italy)
Type
Published Article
Journal
Sensors
Publisher
MDPI AG
Publication Date
Jun 23, 2021
Volume
21
Issue
13
Identifiers
DOI: 10.3390/s21134297
PMID: 34201829
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

In this study, performed on a set of twenty-two earthquakes that occurred in central Italy between 2019 and 2020, we will explore the possibility to locate the hypocenter of local events by using a ring laser gyroscope observing the vertical ground rotation and a standard broadband seismometer. A picking algorithm exploiting the four components (4C) polarization properties of the wavefield is used to identify the first shear onset transversely polarized (SH). The wavefield direction is estimated by correlation between the vertical rotation rate and the transverse acceleration. The picked times for Pg and Sg onsets are compared to the ones obtained after manual revision on the GIGS station seismometer. The results are compared with the location provided by the national monitoring service of the INGV.

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