Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution

We discuss a model of seismic activity that is based on the concept of energy in a cluster of sources of seismic activity. We show that specific cases of the studied model lead to the Gutenberg–Richter relationship and the Omori law. These laws are valid for earthquakes that happen in a single clust...

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Main Authors: Roumen Borisov, Nikolay K. Vitanov
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Entropy
Subjects:
Online Access:https://www.mdpi.com/1099-4300/27/2/130
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author Roumen Borisov
Nikolay K. Vitanov
author_facet Roumen Borisov
Nikolay K. Vitanov
author_sort Roumen Borisov
collection DOAJ
description We discuss a model of seismic activity that is based on the concept of energy in a cluster of sources of seismic activity. We show that specific cases of the studied model lead to the Gutenberg–Richter relationship and the Omori law. These laws are valid for earthquakes that happen in a single cluster of sources of seismic activity. Further, we discuss the distribution of earthquakes for several clusters containing sources of seismic activity. This distribution contains, as a specific case, a version of the negative binomial distribution. We show that at least a part of the roll-off effect connected to the parameter <i>b</i> of the Gutenberg– Richter law occurs because one records earthquakes that happen in more than one cluster of sources of seismic activity.
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spelling doaj-art-54502d72d00549fbab2ed009e6cab2ed2025-08-20T03:12:18ZengMDPI AGEntropy1099-43002025-01-0127213010.3390/e27020130Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial DistributionRoumen Borisov0Nikolay K. Vitanov1Institute of Mechanics, Bulgarian Academy of Sciences, Academician Georgi Bonchev Street, Block 4, 1113 Sofia, BulgariaInstitute of Mechanics, Bulgarian Academy of Sciences, Academician Georgi Bonchev Street, Block 4, 1113 Sofia, BulgariaWe discuss a model of seismic activity that is based on the concept of energy in a cluster of sources of seismic activity. We show that specific cases of the studied model lead to the Gutenberg–Richter relationship and the Omori law. These laws are valid for earthquakes that happen in a single cluster of sources of seismic activity. Further, we discuss the distribution of earthquakes for several clusters containing sources of seismic activity. This distribution contains, as a specific case, a version of the negative binomial distribution. We show that at least a part of the roll-off effect connected to the parameter <i>b</i> of the Gutenberg– Richter law occurs because one records earthquakes that happen in more than one cluster of sources of seismic activity.https://www.mdpi.com/1099-4300/27/2/130seismic activityearthquakesenergy-based modelGutenberg–Richter lawOmori lawnegative binomial distribution
spellingShingle Roumen Borisov
Nikolay K. Vitanov
Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution
Entropy
seismic activity
earthquakes
energy-based model
Gutenberg–Richter law
Omori law
negative binomial distribution
title Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution
title_full Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution
title_fullStr Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution
title_full_unstemmed Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution
title_short Mathematical Theory of Seismic Activity and Its Specific Cases: Gutenberg–Richter Law, Omori Law, Roll-Off Effect, and Negative Binomial Distribution
title_sort mathematical theory of seismic activity and its specific cases gutenberg richter law omori law roll off effect and negative binomial distribution
topic seismic activity
earthquakes
energy-based model
Gutenberg–Richter law
Omori law
negative binomial distribution
url https://www.mdpi.com/1099-4300/27/2/130
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AT nikolaykvitanov mathematicaltheoryofseismicactivityanditsspecificcasesgutenbergrichterlawomorilawrolloffeffectandnegativebinomialdistribution