Physical upper bounds limit the maximum possible magnitude of an earthquake
Geophysical studies and seismic hazard models consistently treat earthquake magnitudes as subject to upper bounds, often represented by truncated magnitude-frequency distributions constrained by fault geometry and crustal mechanics.
The retrieved papers actively investigate the estimation, modeling, and conceptual validity of a maximum possible earthquake magnitude (Mmax or upper truncation bounds), supporting the premise that physical upper bounds exist, even if they are statistically difficult to constrain precisely from short earthquake catalogs alone.
J. Beirlant, A. Kijko, Tom Reynkens, J. Einmahl. Estimating the maximum possible earthquake magnitude using extreme value methodology: the Groningen case. 2017. https://doi.org/10.1007/s11069-017-3162-2
Paper [0] discusses estimating the area-characteristic maximum possible earthquake magnitude using extreme value methodology and truncated exponential distributions.
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M. Holschneider, G. Zöller, R. Clements, D. Schorlemmer. Can we test for the maximum possible earthquake magnitude?. 2014. https://doi.org/10.1002/2013jb010319
Paper [1] explores the concept of an upper truncation or maximum possible earthquake magnitude in regional earthquake catalogs.
C. Vlek. Reflections and Some Questions about Assessing the Maximum Possible Earthquake in the Long-Exploited Groningen Gas Field. 2023. https://doi.org/10.1785/0220230084
Paper [2] reviews the expert assessment and estimation of the maximum possible earthquake magnitude induced by gas extraction.
Andrzej Kijko. Bayesian Assessment of the Maximum Possible Earthquake Magnitude <i>m</i> <i>max</i>. 2025. https://doi.org/10.17491/jgsi/2025/174157
Paper [3] focuses on the Bayesian assessment of the regional maximum possible earthquake magnitude using geophysical and geological constraints.
Li L, Im K, Avouac JP. Large-magnitude events unlikely in induced earthquake sequences.. 2026. https://doi.org/10.1038/s41467-026-72219-9
Paper [5] indicates that physical factors such as heterogeneous loading and disorganized fault networks limit the growth and maximum size of large ruptures.
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