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A. Helmstetter

Associate Editor, JGR: Solid Earth

Plot showing the distribution of magnitudes (blue) and positive magnitude differences (red) for aftershocks of the 2019 M7.1 Ridgecrest California earthquake
Posted inEditors' Highlights

A New Robust Estimator of Earthquake Magnitude Distribution

by A. Helmstetter 19 March 202118 March 2021

The b-value, which describes the fraction of large versus small earthquakes, is less sensitive to transient changes in detection threshold and may improve the detection of precursory changes.

Plot showing aftershocks triggered by the 1992 Landers earthquake in California and Coulomb stress changes
Posted inEditors' Highlights

The Failure of Physics-Based Earthquake Forecasting Models

by A. Helmstetter 12 February 202112 April 2022

Spatial clustering of aftershocks explains why simple statistical models often outperform complex physics‐based earthquake forecasting models even if the physical mechanisms are correctly modeled.

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