@Article{VogelBrPaMuMiCh:2020:ShEnMu,
author = "Vogel, Eugenio E. and Brevis, Felipe G. and Past{\'e}n, Denisse
and Muņoz, V{\'{\i}}ctor and Miranda, Rodrigo A. and Chian,
Abraham Chian-Long",
affiliation = "{Universidad de La Frontera} and {Universidad de La Frontera} and
{Universidad de Chile} and {Universidad de Chile} and
{Universidade de Bras{\'{\i}}lia (UnB)} and {Instituto Nacional
de Pesquisas Espaciais (INPE)}",
title = "Measuring the seismic risk along the NazcaSouth American
subduction front: shannon entropy and mutability",
journal = "Natural Hazards and Earth System Sciences",
year = "2020",
volume = "20",
number = "11",
pages = "2943--2960",
month = "Nov.",
abstract = "Four geographical zones are defined along the trench that is
formed due to the subduction of the Nazca plate underneath the
South American plate; they are denoted A, B, C and D from north to
south; zones A, B and D had a major earthquake after 2010
(magnitude over 8.0), while zone C has not, thus offering a
contrast for comparison. For each zone, a sequence of intervals
between consecutive seisms with magnitudes greater than or equal
to 3.0 is set up and then characterized by Shannon entropy and
mutability. These methods show a correlation after a major
earthquake in what is known as the aftershock regime but show
independence otherwise. Exponential adjustments to these
parameters reveal that mutability offers a wider range for the
parameters to characterize the recovery compared to the values of
the parameters defining the background activity for each zone
before a large earthquake. It is found that the background
activity is particularly high for zone A, still recovering for
zone B, reaching values similar to those of zone A in the case of
zone C (without recent major earthquake) and oscillating around
moderate values for zone D. It is discussed how this can be an
indication of more risk of an important future seism in the cases
of zones A and C. The similarities and differences between Shannon
entropy and mutability are discussed and explained.",
doi = "10.5194/nhess-20-2943-2020",
url = "http://dx.doi.org/10.5194/nhess-20-2943-2020",
issn = "1561-8633",
language = "en",
targetfile = "vogel_measuring.pdf",
urlaccessdate = "19 abr. 2024"
}