Observation of Equipartition of Seismic Waves

R. Hennino; N. Trégourès; N. M. Shapiro; L. Margerin; M. Campillo; B. A. van Tiggelen; R. L. Weaver

doi:10.1103/PhysRevLett.86.3447

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Observation of Equipartition of Seismic Waves

R. Hennino, N. Trégourès, N. M. Shapiro, L. Margerin, M. Campillo, B. A. van Tiggelen, and R. L. Weaver

Phys. Rev. Lett. 86, 3447 – Published 9 April 2001

Abstract

Equipartition is a first principle in wave transport, based on the tendency of multiple scattering to homogenize phase space. We report observations of this principle for seismic waves created by earthquakes in Mexico. We find qualitative agreement with an equipartition model that accounts for mode conversions at the Earth's surface.

Received 29 September 2000

DOI:https://doi.org/10.1103/PhysRevLett.86.3447

Authors & Affiliations

R. Hennino¹, N. Trégourès², N. M. Shapiro³, L. Margerin^1,4, M. Campillo¹, B. A. van Tiggelen^2,*, and R. L. Weaver⁵

¹Laboratoire de Géophysique Interne et Tectonophysique, Observatoire de Grenoble, Université Joseph Fourier, B.P. 53, 38041 Grenoble Cedex, France
²Laboratoire de Physique et Modélisation des Milieux Condensés, CNRS/Université Joseph Fourier, B.P. 166, 38042 Grenoble Cedex 09, France
³Instituto de Geofisica, Universidad Nacional Autonoma de México, CU 04510 México, D.F., Mexico
⁴Department of Geosciences, Princeton University, Guyot Hall, Princeton, New Jersey 08544
⁵Department of Theoretical and Applied Mechanics, University of Illinois at Urbana–Champaign, Urbana, Illinois 61801

^*Corresponding author.

Earthquakes Shake, Rattle, and Roll

Phys. Rev. Focus 7, 17 (2001)

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Vol. 86, Iss. 15 — 9 April 2001

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