Intermittent criticality on a regional scale in Bhuj

Details Intermittent criticality on a regional scale in Bhuj Intermittent criticality on a regional scale in Bhuj

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004geoji.158..676p&link_type=abstract

Geophysical Journal International, Volume 158, Issue 2, pp. 676-680.

Physics

Condensed Matter

Statistical Mechanics

1

Bhuj Earthquake, Entropy, Intermittent Criticality, Seismicity, Statistical Mechanics

Scientific paper

The statistics of the Bhuj earthquake population are examined to investigate the proximity of the system to the critical state, defined through an entropy-energy relationship based on the tools of statistical mechanics. The results are compared with a theoretical model corresponding to a Boltzmann probability density distribution of degenerate microscopic energy states of the form p(E) ~E-B-1 e-E/θ. The data exhibit fluctuations in characteristic energy θ at a constant B-value of the form S~B. Features such as (1) time-dependent variations in seismicity during the period of presumably uncorrelated stress field following a major event, and (2) +/-12 per cent fluctuations in the macroscopic thermodynamic variable (entropy) support the intermittent criticality of Bhuj crust.

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