High-Definition Mapping of the Gutenberg–Richter b-Value and Its Relevance: A Case Study in Italy

Abstract The spatial variability of the magnitude–frequency distribution is important to improve earthquake forecasting capabilities at different time scales. Here, we develop a novel approach, based on weighted maximum-likelihood estimation, build model for b-value parameter Gutenberg–Richter law and its uncertainty, also catalogs with time-varying completeness magnitude. Then, provide guideline Bayes factor measure importance respect having spatially uniform b-value. Finally, apply procedure new Italian instrumental catalog from 1960 2019 investigate over territory.