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Volume 52 Supplement 11

Special Issue: Application of GPS and other space geodetic techniques to Earth Sciences (2)

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, QL., Chen, YT., Cui, DX. 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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