Open Access

Decadal correlation between crustal deformation and variation in length of day of the Earth

  • Qing-Liang Wang1, 3Email author,
  • Yun-Tai Chen2,
  • Du-Xin Cui1,
  • Wen-Ping Wang1 and
  • Wei-Feng Liang1
Earth, Planets and Space201452:BF03352318

https://doi.org/10.1186/BF03352318

Received: 31 December 1999

Accepted: 19 September 2000

Published: 24 June 2014

Abstract

Recently, in comparing with Earth rotation data, we found some exciting correlation phenomena between length-of-day (LOD) and crustal deformations as well as stress observations in China, the correlation appears most typically on decade time scales and seems to be direction-dependent. As LOD variation induced stress and deformation is far less than the observed ones, we infer that decade variations in crustal deformation and stress are very possibly attributed to the core-mantle coupling process, just like LOD decade variations are attributed to core-mantle coupling. More detailed and extended investigations are going on, and we believe that the similar correlation phenomena should also exist in other part of the world. The LOD-correlated crustal deformations are expected to provide a better constraint on verifying the real core-mantle coupling mechanism, topographic, electromagnetic or gravitational coupling.