Information theory and earthquakes: Depth propagation seismicity in northern Chile
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2022-11-16Resumen
Mutability is an information theory tool intended to characterize sequences of non-linear phenomena (e.g.,
earthquakes). In this study, we used mutability to identify and analyze the depth propagation of seismicity in
northern Chile. During March/April 2014, several important earthquakes struck northern Chile, including one of
magnitude 8.1, producing intense but short-lived aftershock regimes. To better understand this behavior, we
used data from the Integrated Plate Boundary Observatory Chile (IPOC) catalog. In a first approach, we
considered 101,601 earthquakes registered from January 1, 2007 to December 31, 2014 within a rectangle
defined by the coordinates 68 W–72 W and 18S–22S. Based on Gutenberg–Richter analysis, earthquakes with
magnitudes of >2.3 (a subset of 79,321 seisms) were selected for further analysis and were grouped by depth into
overlapping bins in order to identify the depth propagation of the aftershock regimes. The largest two March
2014 earthquakes produ...
Palabra/s clave
Mutability
Non-linear phenomena
Earthquakes
Information theory