Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/15677
Authors: Trasatti, Elisa 
Title: Volcanic and Seismic Source Modeling: An Open Tool for Geodetic Data Modeling
Journal: Frontiers in Earth Science 
Series/Report no.: /10 (2022)
Publisher: Frontiers Media S.A.
Issue Date: 1-Jul-2022
DOI: 10.3389/feart.2022.917222
Keywords: analytical model
geodetic data
natural hazards
open science
inverse theory
InSAR
Subject Classification04.08. Volcanology 
04.03. Geodesy 
04.06. Seismology 
Abstract: Volcanic and Seismic source Modeling (VSM) is an open-source Python tool to model ground deformation. VSM allows the user to choose one or more deformation sources of various shapes as a forward model among sphere, spheroid, ellipsoid, rectangular dislocation, and sill. It supports multiple datasets from most satellite and terrestrial geodetic techniques: Interferometric SAR, GNSS, leveling, Electronic Distance Measurements, tiltmeters, and strainmeters. Two sampling algorithms are available: one is a global optimization algorithm based on the Voronoi cells and yields the best-fitting solution and the second follows a probabilistic approach to parameters estimation based on the Bayes theorem and the Markov chain Monte Carlo method. VSM can be executed as Python script, in Jupyter Notebook environments, or by its Graphical User Interface. Its broad applications range from high-level research to teaching, from single studies to near real-time hazard estimates. Potential users range from early-career scientists to experts. It is freely available on GitHub (https://github.com/EliTras/VSM) and is accompanied by step-by-step documentation in Jupyter Notebooks. This study presents the functionalities of VSM and test cases to describe its use and comparisons among possible settings.
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