Seismicity anomalies prior to the 13 December 2008, <i>M<sub>s</sub></i>=5.7 earthquake in Central Greece

Abstract

Abstract.This investigation has applied a recent methodology to identify seismic quiescence and seismic acceleration, prior to the occurrence of the 13 December 2008, M s =5.7 earthquake in Central Greece. Anomalous seismic quiescence is observed around the epicentral area almost twelve years prior to the main shock and it lasted for a period of about four and a half years. After this period an acceleration in seismic activity began and lasted until the main shock. Modeling this seismic sequence with the time-tofailure equation and with a fixed value of the exponent "m" equal to 0.32, shows a successful estimation of the occurrence time of the main event within a few days. The physical meaning of this particular choice of the "m" value is discussed.

Does the Catalog of California Earthquakes, With Aftershocks Included, Contain Information About Future Large Earthquakes?

“…These methods are ROC, PPV, and Shannon information. We note that quiescence has been identified as a precursor to major earthquakes in previous research (Chouliaras, 2009; Habermann, 1988; Huang et al., 2001; Kanamori, 1981; Katsumata, 2011; Main & Meredith, 1991; Nanjo, 2020; Rundle et al., 2003, 2011; Tormann et al., 2010; Wiemer & Wyss, 1994; Wyss & Habermann, 1988).…”

Nowcasting Earthquakes With Stochastic Simulations: Information Entropy of Earthquake Catalogs

“…We note that many other authors have discussed the importance of seismic quiescence, which clearly can only be identified in comparison to activation. These include Kanamori (1981); Wiemer and Wyss (1994); Wyss and Habermann (1988); Chouliaras (2009); Katsumata (2011); Ben-Zion and Zaliapin (2020); Varotsos et al (2011Varotsos et al ( , 2014Varotsos et al ( , 2020; Zaliapin and Ben-Zion (2022).…”