Reactions to extreme events: Moving threshold model

In spite of precautions to avoid the harmful effects of extreme events, we experience recurrently, phenomena that overcome the preventive barriers. These barriers usually increase drastically right after the occurrence of such extreme events, but steadily decay in their absence. In this paper, we co...

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Bibliographic Details
Published in:Physica A 2006-05, Vol.364, p.435-444
Main Authors: Altmann, Eduardo G., Hallerberg, Sarah, Kantz, Holger
Format: Article
Language:English
Subjects:
Adaptive model
Extreme events
Recurrence time
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Summary:In spite of precautions to avoid the harmful effects of extreme events, we experience recurrently, phenomena that overcome the preventive barriers. These barriers usually increase drastically right after the occurrence of such extreme events, but steadily decay in their absence. In this paper, we consider a simple model that mimics the evolution of the protection barriers to study the efficiency of the system's reaction to extreme events and how it changes our perception of the sequence of extreme events itself. We obtain that the usual method of fighting extreme events introduces a periodicity in their occurrence and is generally less efficient than the use of a constant barrier. On the other hand, it shows a good adaptation to the presence of slow non-stationarities.
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2005.08.074