Abstract:
The aim of this dissertation is to analyze and nd a correlation, if any, between
the earthquakes occurring in the Indian subcontinent. For two di erent sets of
studies, the earthquakes occurring in the Himalayan and the Andaman-Sumatra
region are mainly divided into four and six zones based on their tectonic similarity.
The earthquake data of past 49 years (till 31-Dec-2018) was utilised for the purpose
of this study.
When arranged chronologically, the seismic events produced a one dimensional
time array of coarse-grain magnitude in accordance with the speci c zone of their
occurrence.
The coarse grain magnitudes are then read as 1, 4, and 6 bit fractal addresses
for areas divided into 4 zones, and as one-bit fractal addresses for areas divided
into 6 zones, using a MATLAB code. The images thus produced are analyzed
to nd correlation, if any, between the seismic zones. The images produced by
assigning probabilities of occurrence of a seismic event in each zone, calculated
using historical data and assuming all events are independent, re
ects dissimilarity
to the images produced by the actual earthquakes.
The results strengthens the idea that all the seismic events are not independent
and there must exist a correlation between them. Now, the conclusion is
based on the historical data in the given study area, and we can only determine
the probability of occurrence of an event with respect to a given seismic activity
by comparing the zone wise earthquake mapping and the pattern generated by
assigning probabilities to each zone.
