Reactions to extreme events: moving threshold model

Details Reactions to extreme events: moving threshold model Reactions to extreme events: moving threshold model

2005-08-23

arxiv.org/abs/physics/0508170v1

Physica A 364 p. 435 (2006)

Physics

Data Analysis, Statistics and Probability

14 pages and 7 figures

Scientific paper

10.1016/j.physa.2005.08.074

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.

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