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FiSH; MATLAB tools to turn fault data into seismic-hazard models

B. Pace, F. Visini and L. Peruzza
FiSH; MATLAB tools to turn fault data into seismic-hazard models
Seismological Research Letters (April 2016) 87 (2A): 374-386


Faults have been increasingly integrated into seismic-hazard assessments. We have developed a package of MATLAB (, last accessed January 2016) tools (called FiSH), designed to help seismic-hazard modelers analyze fault data. These tools enable the derivation of expected earthquake rates, given common fault data, and allow researchers to test the consistency between the magnitude-frequency distributions (MFDs) assigned to a fault and some available observations. The basic assumption of FiSH is that the geometric and kinematic features of a fault are the expression of its seismogenic potential. Three tools have been designed to integrate the variable levels of information available: (1) the first tool allows users to convert fault geometry and slip rates into a global budget of the seismic moment released in a given time frame, taking uncertainties into account; (2) the second tool computes the recurrence parameters and associated uncertainties from historical and/or paleoseismological data; and (3) the third tool outputs time-independent or time-dependent earthquake rates for different MFD models. We present a test case to illustrate the capabilities of FiSH, on the Paganica normal fault in central Italy that ruptured during the 2009 L'Aquila earthquake sequence (mainshock M (sub w) 6.3). The source codes are open, and we encourage users to handle the scripts, communicate with us regarding bugs, and/or suggest further improvements. Our intent is to distribute these tools in order to help researchers to pinpoint potential inconsistencies and obtain reliable fault-based seismic-hazard evaluations.

ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 87
Serial Issue: 2A
Title: FiSH; MATLAB tools to turn fault data into seismic-hazard models
Affiliation: DiSPUTer, Universita "G. d'Annunzio", Campus Universitario di Madonna delle Piane, Italy
Pages: 374-386
Published: 201604
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 45
Accession Number: 2016-025776
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: Istituto Nazionale di Geofisica e Vulcanologia, ITA, ItalyOsservatorio Geofisico Sperimentale, ITA, Italy
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201613
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