Earthquake Science

, Volume 23, Issue 5, pp 397–402 | Cite as

Equipartition and retrieval of Green’s function

Article

Abstract

Physical and mathematical arguments are presented for equipartition as the statistical state achieved by a random field, independent of its sources, in the limit of enough scattering. The arguments are simplest for the case of thermally excited fields, but are shown to apply also, with caveats, in non-equilibrium acoustics and seismology. Practical implications are discussed.

Key words

noise correlation equipartition elastic waves information entropy 

CLC number

P315.01 

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Copyright information

© The Seismological Society of China and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  1. 1.Department of PhysicsUniversity of IllinoisUrbanaUSA

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