The Shannon entropy power did not show any evident pattern,
while study of the FIM has revealed that seismograms of tsunamigenic earthquakes seem characterized by a higher degree of order
and organization than those of non-tsunamigenic events.
The use of the Fisher–Shannon information plane has provided
very efficient discrimination between the two groups of seismograms.
Such a property is also revealed by the use of the
complexity measure, which combines the features of the Shannon entropy power and the FIM.
The results show that the
Fisher–Shannon (FS) method could reveal a number of new findings related to seismograms of earthquakes,
and in particular of those having the potential to generate tsunamis.
The results obtained suggest a new promising approach in investigating the reliability of tsunami warning systems
through the application of advanced statistical methodologies.