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


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.


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Correspondence to Qing-Liang Wang.

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Wang, Q., Chen, Y., Cui, D. et al. Decadal correlation between crustal deformation and variation in length of day of the Earth. Earth Planet Sp 52, 989–992 (2000).

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  • Crustal Deformation
  • Decade Variation
  • Decade Time Scale
  • China Seismological Bureau
  • Fault Deformation