1:45 PM - 2:00 PM
[SSS06-07] Current frontiers in spatio-temporal b-value analysis
Keywords:Gutenberg-Richter, b-value, spatio-temporal variation
Here, we present an overview of some of the latest advances in studying patterns in the size distribution. In these examples from different regions of the world, including the subduction zones around Japan, we bridge various scales: from the smallest detected events to the giant megathrust earthquakes, from large-scale tectonic imprints to local heterogeneity along active faults, from temporally stable to time-varying patterns, from individual sequences to generic aftershock characteristics, from linear frequency magnitude distributions to those not following Gutenberg-Richter scaling, from low-b-focus to implications of observing very high b-values, from interpreting patterns in terms of physical processes to estimating future rupture potential.
Reliable b-value analysis is critically dependent on monitoring capabilities and homogeneous reporting of events. We demonstrate that improvements in this field are worthwhile: spatio-temporal b-value analysis has the potential to improve real time seismic hazard assessment and additionally provides many insights to advance the qualitative understanding of physical conditions and mechanisms.