The local seismicity occurring at Campi Flegrei caldera during a recent
unrest (1982-1984) has been modeled in terms of Coulomb stress changes
due to magma chamber overpressure, superimposed on a background tensile
regional stress. The computations, performed by a finite element
method in heterogeneous axial-symmetric elastic models, also take
into account the effects of the caldera structure on stress distribution.
Coulomb stress changes have been obtained for the best oriented focal
mechanisms, determined for the total applied stress, i.e., local
change plus background regional stress. The results demonstrate a
very good correlation between positive Coulomb stress changes and
earthquake locations. Furthermore, there is a good agreement between
observed focal mechanisms and the optimally oriented mechanisms as
predicted by the model. The obtained results represent not only a
fundamental contribution toward understanding mechanisms of seismic
generation at Campi Flegrei and other calderas but also demonstrate
that Coulomb stress changes in volcanic areas can be very effective,
because of the high intensity, and deserve more attention than generally
paid.
%0 Journal Article
%1 troise_etal:2003
%A Troise, Claudia
%A Pingue, Folco
%A De Natale, Giuseppe
%D 2003
%J Journal of Geophysical Research
%K geophysics seismology
%N B6
%P 2292
%R 10.1029/2002JB002006
%T Coulomb stress changes at calderas: Modeling the seismicity of Campi
Flegrei (southern Italy)
%U http://dx.doi.org/10.1029/2002JB002006
%V 108
%X The local seismicity occurring at Campi Flegrei caldera during a recent
unrest (1982-1984) has been modeled in terms of Coulomb stress changes
due to magma chamber overpressure, superimposed on a background tensile
regional stress. The computations, performed by a finite element
method in heterogeneous axial-symmetric elastic models, also take
into account the effects of the caldera structure on stress distribution.
Coulomb stress changes have been obtained for the best oriented focal
mechanisms, determined for the total applied stress, i.e., local
change plus background regional stress. The results demonstrate a
very good correlation between positive Coulomb stress changes and
earthquake locations. Furthermore, there is a good agreement between
observed focal mechanisms and the optimally oriented mechanisms as
predicted by the model. The obtained results represent not only a
fundamental contribution toward understanding mechanisms of seismic
generation at Campi Flegrei and other calderas but also demonstrate
that Coulomb stress changes in volcanic areas can be very effective,
because of the high intensity, and deserve more attention than generally
paid.
@article{troise_etal:2003,
abstract = {The local seismicity occurring at Campi Flegrei caldera during a recent
unrest (1982-1984) has been modeled in terms of Coulomb stress changes
due to magma chamber overpressure, superimposed on a background tensile
regional stress. The computations, performed by a finite element
method in heterogeneous axial-symmetric elastic models, also take
into account the effects of the caldera structure on stress distribution.
Coulomb stress changes have been obtained for the best oriented focal
mechanisms, determined for the total applied stress, i.e., local
change plus background regional stress. The results demonstrate a
very good correlation between positive Coulomb stress changes and
earthquake locations. Furthermore, there is a good agreement between
observed focal mechanisms and the optimally oriented mechanisms as
predicted by the model. The obtained results represent not only a
fundamental contribution toward understanding mechanisms of seismic
generation at Campi Flegrei and other calderas but also demonstrate
that Coulomb stress changes in volcanic areas can be very effective,
because of the high intensity, and deserve more attention than generally
paid.},
added-at = {2012-09-01T13:08:21.000+0200},
author = {Troise, Claudia and Pingue, Folco and De Natale, Giuseppe},
biburl = {https://www.bibsonomy.org/bibtex/2f60a865a74e61edb8ebf9ddf0df4a827/nilsma},
day = 6,
doi = {10.1029/2002JB002006},
interhash = {df4aaa312719d0f4bd87cfbc5a75a3e3},
intrahash = {f60a865a74e61edb8ebf9ddf0df4a827},
issn = {0148-0227},
journal = {Journal of Geophysical Research},
keywords = {geophysics seismology},
month = jun,
number = {B6},
pages = 2292,
timestamp = {2021-02-09T13:26:52.000+0100},
title = {Coulomb stress changes at calderas: Modeling the seismicity of Campi
Flegrei (southern Italy)},
url = {http://dx.doi.org/10.1029/2002JB002006},
volume = 108,
year = 2003
}