This repository includes the code and data used in the paper " Algorithmic identification of the precursory scale increase (PSI) phenomenon in earthquake catalogues".  There are four folders, two for the data, and one each for the "Circular algorithm" and for the "Rectangular algorithm", respectively. Each folder has a Readme.txt file explaining its content.

This repository includes the code and data used in the paper " Algorithmic identification of the precursory scale increase (PSI) phenomenon in earthquake catalogues".  There are four folders, two for the data, and one each for the "Circular algorithm" and for the "Rectangular algorithm", respectively. Each folder has a Readme.txt file explaining its content.

A seismic station installed in the vicinity of a volcano can provide an overview of the state of the volcano. Different observable parameters can be extracted from the seismic time series to help monitor the temporal changes that preceding and accompanying a volcanic eruption. We calculated five seismic parameters which are Permutation Entropy (PE), Phase Permutation Entropy (PPE), Instantaneous Frequency (IF), Root-Mean-Square and Root-Median-Square (RMeS) of the seismic amplitude to detect changes prior and during the 2014-2015 Holuhraun eruption in Iceland.

Contains two global earthquake-rate forecasts developed by Bayona et al. (2021) to be prospectively evaluated by the Collaboratory for the Study of Earthquake Predictability (CSEP). The Tectonic Earthquake Activity Model (TEAM) is a geodetic-based model using Version 2.1 of the Global Strain Rate Map (GSRM2.1; Kreemer et al., 2014), while the World Hybrid Earthquake Estimates based on Likelihood scores (WHEEL) is a model obtained from a multiplicative log-linear combination of TEAM with the Smoothed Seismicity (KJSS) model of Kagan and Jackson (2011). Earthquake densities are expressed as number of M5.95+ events per unit 0.1^o cell per year. The forecasts are stored in tab separated value files, with the following fields (the first row of data is shown as an example): _{lon_min lon_max lat_min lat_max depth_min depth_max 5.95 6.05} ... _{-180.0 -179.9 -90.0 -89.9 0.0 70.0 4.95e-11 3.97e-11} ... Data and forecasts are described in detail in the following publications: Bayona, J.A., Savran, W., Strader, A., Hainzl, S., Cotton, F. and Schorlemmer, D., 2021. Two global ensemble seismicity models obtained from the combination of interseismic strain measurements and earthquake-catalogue information. Geophysical Journal International, 224(3), pp.1945-1955. Kreemer, C., Blewitt, G. and Klein, E.C., 2014. A geodetic plate motion and Global Strain Rate Model. Geochemistry, Geophysics, Geosystems, 15(10), pp.3849-3889. Kagan, Y.Y. and Jackson, D.D., 2011. Global earthquake forecasts. Geophysical Journal International, 184(2), pp.759-776.

Contains two global earthquake-rate forecasts developed by Bayona et al. (2021) to be prospectively evaluated by the Collaboratory for the Study of Earthquake Predictability (CSEP). The Tectonic Earthquake Activity Model (TEAM) is a geodetic-based model using Version 2.1 of the Global Strain Rate Map (GSRM2.1; Kreemer et al., 2014), while the World Hybrid Earthquake Estimates based on Likelihood scores (WHEEL) is a model obtained from a multiplicative log-linear combination of TEAM with the Smoothed Seismicity (KJSS) model of Kagan and Jackson (2011). Earthquake densities are expressed as number of M5.95+ events per unit 0.1^o cell per year. The forecasts are stored in tab separated value files, with the following fields (the first row of data is shown as an example): _{lon_min lon_max lat_min lat_max depth_min depth_max 5.95 6.05} ... _{-180.0 -179.9 -90.0 -89.9 0.0 70.0 4.95e-11 3.97e-11} ... Data and forecasts are described in detail in the following publications: Bayona, J.A., Savran, W., Strader, A., Hainzl, S., Cotton, F. and Schorlemmer, D., 2021. Two global ensemble seismicity models obtained from the combination of interseismic strain measurements and earthquake-catalogue information. Geophysical Journal International, 224(3), pp.1945-1955. Kreemer, C., Blewitt, G. and Klein, E.C., 2014. A geodetic plate motion and Global Strain Rate Model. Geochemistry, Geophysics, Geosystems, 15(10), pp.3849-3889. Kagan, Y.Y. and Jackson, D.D., 2011. Global earthquake forecasts. Geophysical Journal International, 184(2), pp.759-776.