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Solid Earth An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/se-2020-82
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-2020-82
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  04 Jun 2020

04 Jun 2020

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A revised version of this preprint is currently under review for the journal SE.

Modelling stress field conditions of the Colima Volcanic Complex (Mexico) integrating FEM simulations and geological data

Silvia Massaro1,2, Roberto Sulpizio1,2,3, Gianluca Norini2, Gianluca Groppelli2, Antonio Costa1, Lucia Capra4, Giacomo Lo Zupone5, Michele Porfido6, and Andrea Gabrieli7 Silvia Massaro et al.
  • 1Istituto Nazionale di Geofisica e Vulcanologia, Via D. Creti 12, 40128, Bologna, Italy
  • 2Istituto di Geologia Ambientale e Geoingegneria, Consiglio Nazionale delle Ricerche, Via M. Bianco 9, 20131, Milan, Italy
  • 3Dipartimento di Scienzedella Terra e Geoambientali, Via E. Orabona 4, 70125, Bari, Italy
  • 4Centro de Geociencias, Universidad Nacional Autonoma de Mexico, Queretaro, Mexico
  • 5Institute of New Energy and Low-carbon Technology, Sichuan University, Chengdu, PRC
  • 6Alumni Mathematica, Dipartimento di Matematica, Via E. Orabona 4, 70125, Bari, Italy
  • 7Hawai'i Institute of Geophysics and Planetology, 1680 E-W Road,Honolulu, Hawai'i 96922, USA

Abstract. In the last decades numerical methods have become very popular tools in volcanological studies, since capable of considering many relevant parameters in their calculations, such as the presence of multiple reservoirs, topography, and heterogeneous distribution of the host rock mechanical properties. Although the widespread availability of geodetic data is keep growing, the influence of geological data on the numerical simulations is still poorly considered. In this work a 2D Finite Element Modelling is provided by using the commercial Linear Static Analysis (LISA) software, in order to investigate the stress field conditions occurring around the Colima Volcanic Complex (CVC, Mexico) at increasing the details of geological and geophysical input data. By integrating the published geophysical, volcanological and petrological data, we provide a first-order domain of the CVC feeding system, considering either one or two magma chambers connected to the surface via dykes or isolated (not connected) in the elastic host rocks. We test the methodology by using a gravitational modelling with different geometrical configurations and constraints (i.e. magma chamber dimensions, depth, overpressure). Our results suggest that an appropriate set of geological data is of pivotal importance for improving the mesh generation procedures and the degree of accuracy of numerical outputs, aimed to more reliable physics-based representations of the natural systems.

Silvia Massaro et al.

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Silvia Massaro et al.

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Latest update: 23 Oct 2020
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Short summary
In this work we provide a 2D Finite Element Modeling of the stress field conditions around the Fuego de Colima volcano (Mexico) in order to test the response of the commercial LInear Static Analysis software at increasing different geological constraints. Our results suggest that an appropriate set of geological and geophysical data improves the mesh generation procedures and the degree of accuracy of numerical outputs, aimed to more reliable physics-based representations of the natural system.
In this work we provide a 2D Finite Element Modeling of the stress field conditions around the...
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