Project nº 2124-B
PWG - PAPERS
A Chilean seismic regionalization through a Kohonen neural network.
Authors: Jorge Reyes (TGT) & Víctor Cárdenas (DFA - U de Valparaíso)
The following article is a review of a paper
published in may 2010 in the scientific magazine "Neural
Computing & Applications".
1. The idea
Due to the fact that the self organized kohonen maps have the ability to associate n-dimensional vectors from a similar way the human brain classifies patterns, we have decided to investigate the performance of such a neuronal web applied into a seismic regionalization.
2. The vectors
3. The results
The seismic regions have the following characteristic related to a seismicity, where N = quantity of seisms with magnitude > = 4.5 Ms, observed in a year span in a cell of 111x111 km2:
It's important to say that the seismic regions are dynamic. It means that if the base of the data is extended, the seismic regions can change.
The Government shows his point of view about our research:
"According to the methodology performed, it is important to take into account that the artificial intelligence algorhythms and neural networks are powerful tools that allow to reproduce the behaviour of complex phenomena where numerous variables participate, on a large temporary and space scale, that's why the use of the programming is considered a saving of resources in all aspects.
Due to the fact that research on seismic macrozones is complex, not just because they require a timespan that can make sure a recurrence period of big seisms taken into account but also the correct labelling for the seismogenic sources in the country, an understanding of the effects in situ and up to date detailed geology among other aspects that make from these researches an work to consider in the plans for territory setting and the design norms and location of different types of structures, a task that in the most seismic country is still pendant".
About the Zone 6, the Government says:
"ONEMI is aware of the gap in the North (from Ilo to Antofagasta) and therefore has strengthened and updated contingency plans in the regions of northern Chile, educating people about the reality seismic in the area, and exercising in front the threat of earthquake-tsunami, which will implement the behavior of the population against the signage installed, alerted by sirens and recognition of escape routes, which has been an ongoing work of the Regional Committee waterfront community in general.
In particular, ONEMI and Regional Municipality of Tarapaca in conjunction with the Regional Civil Protection Committee, organized a mass evacuation simulation for earthquake and tsunami in the city of Iquique which was held on June 30, an activity that was attended of the inhabitants of the coast of Iquique. Similarly, dated August 19 in a simulation in the city of Antofagasta. "
Vicente Nuñez Pinochet
* 06/30/2010: simulation for earthquake and tsunami in Iquique: Emol