investigating the time-scaling behavior of the 2004–2010 seismicity of aswan area (egypt) by means of the allan factor statistics and the detrended fluctuation analysis

investigating the time-scaling behavior of the 2004–2010 seismicity of aswan area (egypt) by means of the allan factor statistics and the detrended fluctuation analysis

;L. Telesca;M. Lovallo;A. E.-E. Amin Mohamed;M. ElGabry;S. El-hady;K. M. Abou Elenean;R. ElShafey Fat ElBary
anziam journal 2012 Vol. 12 pp. 1267-1276
135
telesca2012naturalinvestigating

Abstract

The time dynamics of seismicity of Aswan area (Egypt) from 2004 to 2010 was investigated by means of the (i) Allan Factor, which is a powerful tool allowing the capture of time-clusterized properties of temporal point processes; and the (ii) detrended fluctuation analysis, which is capable of detecting scaling in nonstationary time series. The analysis was performed varying the depth and the magnitude thresholds. The 2004–2010 Aswan seismicity is characterized by significant three-fold time-clustering behaviors with scaling exponents ~0.77 for timescales between 10<sup>4.16</sup> s and 10<sup>5.14</sup> s, ~0.34 for timescales between 10<sup>5.14</sup> s and 10<sup>6.53</sup> s, and ~1 for higher timescales. The seismic interevent times and distances are characterized by persistent temporal fluctuations for most of the magnitude and depth thresholds.

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179367
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10.5194/nhess-12-1267-2012
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