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Reference TypeJournal Article
Sitemtc-m21c.sid.inpe.br
Holder Codeisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identifier8JMKD3MGP3W34R/43KNL7P
Repositorysid.inpe.br/mtc-m21c/2020/11.20.10.02   (restricted access)
Last Update2020:11.20.10.02.07 simone
Metadatasid.inpe.br/mtc-m21c/2020/11.20.10.02.07
Metadata Last Update2020:11.22.04.56.26 administrator
DOI10.5194/nhess-20-2943-2020
ISSN1561-8633
Citation KeyVogelBrPaMuMiCh:2020:ShEnMu
TitleMeasuring the seismic risk along the Nazca–South American subduction front: shannon entropy and mutability
Year2020
MonthNov.
Access Date2020, Dec. 01
Number of Files1
Size4983 KiB
Context area
Author1 Vogel, Eugenio E.
2 Brevis, Felipe G.
3 Pastén, Denisse
4 Muñoz, Víctor
5 Miranda, Rodrigo A.
6 Chian, Abraham Chian-Long
Group1
2
3
4
5
6 DIDGE-CGCEA-INPE-MCTIC-GOV-BR
Affiliation1 Universidad de La Frontera
2 Universidad de La Frontera
3 Universidad de Chile
4 Universidad de Chile
5 Universidade de Brasília (UnB)
6 Instituto Nacional de Pesquisas Espaciais (INPE)
Author e-Mail Address1 eugenio.vogel@ufrontera.cl
2
3
4
5
6 abraham.chian@inpe.br
JournalNatural Hazards and Earth System Sciences
Volume20
Secondary MarkA1_ENGENHARIAS_I A2_GEOGRAFIA
History2020-11-20 10:03:02 :: simone -> administrator :: 2020
2020-11-22 04:56:26 :: administrator -> simone :: 2020
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Is the master or a copy?is the master
Document Stagecompleted
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Transferable1
Content TypeExternal Contribution
Secondary TypePRE PI
Version Typepublisher
Number11
Pages2943-2960
AbstractFour 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.
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Type of Workjournal article
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Next Higher Units8JMKD3MGPCW/3EU29DP
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