dc.contributor |
Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III |
dc.contributor |
Institut de Ciències de la Terra Jaume Almera |
dc.contributor |
Zlotnik, Sergio |
dc.contributor |
Geyer Traver, Adelina |
dc.contributor.author |
Garrido Ballart, Sònia |
dc.date |
2017-06-16 |
dc.identifier.citation |
PRISMA-126749 |
dc.identifier.uri |
http://hdl.handle.net/2117/107661 |
dc.language.iso |
eng |
dc.publisher |
Universitat Politècnica de Catalunya |
dc.rights |
Attribution 3.0 Spain |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.rights |
http://creativecommons.org/licenses/by/3.0/es/ |
dc.subject |
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació |
dc.subject |
Finite element method |
dc.subject |
Global Positioning System |
dc.subject |
3D finite elements |
dc.subject |
forward finite elements |
dc.subject |
Deception Islad |
dc.subject |
ground deformation |
dc.subject |
GPS |
dc.subject |
Elements finits, Mètode dels |
dc.subject |
Sistema de posicionament global |
dc.title |
3D FEM model of ground deformation in Deception Island (Antarctica) |
dc.type |
info:eu-repo/semantics/masterThesis |
dc.description.abstract |
Ground deformation has been demonstrated to be one of the most common signals of
volcanic unrest. A variety of processes can cause ground deformation in active volcanic
areas (e.g. magmatic processes, pore pressure variations in the hydrothermal systems, etc),
and being able to recognize and distinguish them is crucial for evaluating the potential
occurrence of future eruptions. Ground deformation can be measured using remote
sensing or geodetic techniques like GPS or tiltmeters. However, even if geodetic monitoring
networks may be capable of recording the ground deformation signal at surface, it is difficult
to directly identify where and how are the pressure sources responsible for the observed
deformation. Deception Island is the most active volcano in the South Shetland Islands,
which last destructive events took place in 1967, 169 and 1970. Since the installation of
the monitoring network in the island, it has experienced three uplift/downlift episodes,
where ground deformation has been measured with GPS stations. .
The objective of this work is to evaluate the location, shape, pressure source responsible for
surface ground deformation recorded in Deception Island during the period 1995 - 2000
using Finite Elements (FE) linear elastic models. First, we have considered a 2D model
where we have studied the effect of the different parameters in ground deformation. Second,
3D models simulating the real topography of Deception Island have been considered. The
results of the 3D models are compared with the GPS data registered in some points of the
island to approximate the shape, depth, excess pressure of the reservoir. Results obtained
are crucial to understand the current magmatic situation of the island and the potential
outcome of a future eruption. |