Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.13/930321

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Title
Entropy analysis of the dynamics of El Niño/Southern Oscillation during the Holocene
Author/Creator
Saco, Patricia M.;  Carpi, Laura C.;  Figliola, Alejandra;  Serrano, Eduardo;  Rosso, Osvaldo A.
Institution
The University of Newcastle. Faculty of Engineering & Built Environment, School of Engineering
Description
This study explores temporal changes in the dynamics of the Holocene ENSO proxy record of the Laguna Pallcacocha sedimentary data using two entropy quantifiers. In particular, we analyze the possible connections between changes in entropy and epochs of rapid climate change (RCC). Our results indicate that the dynamics of the ENSO proxy record during the RCC interval 9000–8000 BP displays very low entropy (high predictability) that is remarkably different from that of the other RCCs of the Holocene. Both entropy quantifiers point out to the existence of cycles with a period close to 2000 years during the mid-to-late Holocene. Within these cycles, we find a tendency for entropy to increase (predictability to decrease) during the two longer RCC periods (6000–5000 and 3500–2500 BP) which might be associated with the reported increased aridity of the low tropics.
Relation
Physica A: Statistical Mechanics and Its Applications Vol. 389, Issue 21, p. 5022-5027
Publisher Link
http://dx.doi.org/10.1016/j.physa.2010.07.006
Date
2010
Publisher
Elsevier
Keyword(s)
entropy;  time series analysis;  probability distribution;  ENSO dynamics
Resource Type
journal article
Identifier
http://hdl.handle.net/1959.13/930321
Identifier
ISSN:0378-4371
Reviewed
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Subject
"Physica A: Statistical Mechanics and Its Applications"
 
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