Short-term
Earthquake Prediction
Based on Seismic Precursory Electric
Signals Recorded on Ground Surface.
“What
today seems impossible, is tomorrow’s reality”
Dinos
"STRANGE ATTRACTOR LIKE" ELECTRIC EARTHQUAKE
PRECURSORS
INTRODUCTION
The lithosphere, being the outer cell - solid
part of the earth, is the place where the majority of the
earthquakes occur. It is subjected to EM noise interference from
external sources (ionosphere, magnetosphere), from industrial ground
– surface installed sources and from its interior located sources,
mainly of geotectonic origin. Therefore, the total EM field, monitored
at any specific EM monitoring site on ground surface, is a horrible
mesh of EM signals.
In this mesh co-exist, occasionally, the earthquake precursory
electrical signals.
The main problem is: how to process the recorded raw data, in such a way,
that the earthquake precursory signals will be successfully
recovered and will be useful for earthquake parameters prediction.
Filtering methods in time / frequency domain are not efficient since
the noise constituents frequency spectrum overlaps each other. We
overcome this problem by using the “noise injection method” (arXiv:0807.4298
[ pdf ] based on the Dirac’s Delta Function. The results of that
operation, on the raw data, allowed us to determine successfully the
epicenter of some large earthquakes in the Greek territory (see
examples presented in this site in the monograph).
Similar results were obtained by using monochromatic EM signals. At
this time, motivated by Chaos Theory and generally the “strange
attractor” itself, we combined the monochromatic signals obtained
from two distant monitoring sites. The results were more than a
surprise. The “strange attractor like” electrical earthquake
precursor was invented.
In the case of a monochromatic signal, obtained by any filtering
method, still some noise of the same frequency may exist in the
filtered data. In such a
case, physical modeling of the wanted signal is used along with
inversion techniques.
The "strange attractor" like electrical
earthquake precursor was first5ly observed on 2005 and officially
presented on 2007 in the monograph
"Short-term earthquake prediction". It is an extension of the
azimuthal
(polar)
direction calculation of the earth's oscillating electric field
intensity vector,
registered by two distant monitoring sites.
The strange attractor
earthquake precursor has presented amazing predictive properties
both in occurrence time as well as in in epicenter area
determination and very good signal to noise ratio too, considering
the present ambient noise of the recording site.
By analyzing the
visitors log file of our web-site, generated by the hosting server,
we were surprised by the fact that the topic of the strange
attractor is the main interest of most of the visitors.
Therefore, we decided to
present this page which is dedicated to our latest research
results on the specific topic
ATTENTION: Before you study the content of the
following
pages please read the following six (6) papers placed at the Cornell
Un. data base.
Click on (pdf) for complete paper download
Click on
paper ID number to see its abstract at the Cornell data base.
Preseismic oscillating electric field "strange attractor like"
precursor, of T = 6 months, triggered
by Ssa tidal wave. Application on
large (Ms > 6.0R) EQs
in Greece (October 1st, 2006 - December 2nd, 2008).
Preseismic oscillating electric field "strange attractor" like
precursor, of T=14 days, triggered by M1 tidal wave. Application on
large (Ms > 6.0R) EQs in Greece (March 18th, 2006 - November 17th, 2008).
Preseismic electric field "strange attractor" like precursor analysis
applied on large (Ms > 5.5R) EQs, which occurred
in Greece during December 1st, 2007 - April 30th, 2008.