Abstract
Earthquake is one of the most destructive of natural disasters that killed many people and destroyed a lot of properties. By considering these catastrophic effects, it is highly important of knowing ahead of earthquakes in order to reduce the number of victims and material losses. Earth's electric field is one of the features that can be used to predict earthquakes (EQs), since it has significant changes in the amplitude of the signal prior to the earthquake. This paper presents a detailed analysis of the earth's electric field due to earthquakes which occurred in Greece, between January 1, 2008 and June 30, 2008. In that period of time, 13 earthquakes had occurred. 6 of them were recorded with magnitudes greater than Ms=5R (5R), while 7 of them were recorded with magnitudes greater than Ms=6R (6R). Time domain feature extraction technique is applied to analyze the 1st significant changes in the earth's electric field prior to the earthquake. Two different time domain feature extraction techniques are applied in this work, namely Simple Square Integral (SSI) and Root Mean Square (RMS). The 1st significant change of the earth's electric field signal in each of monitoring sites is extracted using those two techniques. The feature extraction result can be used as input parameter for an earthquake prediction system.
Highlights
One of the major earthquakes in the world after an Alaskan earthquake with a magnitude of 9.2R in 1964 is the Northern Sumatra earthquake with a magnitude of 9.1R on December 26, 2004
We first generate the data of EEFieldiff which represents the change of the earth’s electric field over a certain period of time
The Simple Square Integral (SSI) and Root Mean Square (RMS) techniques are applied to the 1st significant EEfieldiff signal
Summary
One of the major earthquakes in the world after an Alaskan earthquake with a magnitude of 9.2R in 1964 is the Northern Sumatra earthquake with a magnitude of 9.1R on December 26, 2004. The most recent giant earthquake with a magnitude of 9R on March 11, 2011 occurred in Tohoku, Japan [2] This earthquake was followed by a tsunami that killed 18,000 people [3]. Two difference time domain feature extraction techniques are applied for extracting the 1st significant change of the earth’s electric field signal prior to the earthquake (EQ). This feature can be used as the input parameter to the earthquake prediction system.
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