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- W2763691712 abstract "Ground deformation has been demonstrated to be one of the most common signals ofvolcanic unrest. A variety of processes can cause ground deformation in active volcanicareas (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 potentialoccurrence of future eruptions. Ground deformation can be measured using remotesensing or geodetic techniques like GPS or tiltmeters. However, even if geodetic monitoringnetworks may be capable of recording the ground deformation signal at surface, it is difficultto directly identify where and how are the pressure sources responsible for the observeddeformation. 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 ofthe 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 forsurface ground deformation recorded in Deception Island during the period 1995 - 2000using Finite Elements (FE) linear elastic models. First, we have considered a 2D modelwhere 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. Theresults of the 3D models are compared with the GPS data registered in some points of theisland to approximate the shape, depth, excess pressure of the reservoir. Results obtainedare crucial to understand the current magmatic situation of the island and the potentialoutcome of a future eruption." @default.
- W2763691712 created "2017-10-20" @default.
- W2763691712 creator A5016157829 @default.
- W2763691712 date "2017-06-16" @default.
- W2763691712 modified "2023-09-23" @default.
- W2763691712 title "3D FEM model of ground deformation in Deception Island (Antarctica)" @default.
- W2763691712 hasPublicationYear "2017" @default.
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