Seismological evidence for differential rotation of the Earth's inner core

Nature ◽  
1996 ◽  
Vol 382 (6588) ◽  
pp. 221-224 ◽  
Author(s):  
Xiaodong Song ◽  
Paul G. Richards
Keyword(s):  
Differential Rotation ◽  
Inner Core ◽  
Earth’S Inner Core

Viscous drag and the differential rotation of the Earth's core

1997 ◽  
Vol 57 (1) ◽  
pp. 231-233
Author(s):  
DAVID L. BOOK ◽  
J. A. VALDIVIA
Keyword(s):  
Simple Model ◽  
Differential Rotation ◽  
Dynamic Viscosity ◽  
Inner Core ◽  
Outer Core ◽  
Viscous Drag ◽  
Earth’S Rotation ◽  
The Core ◽  
The Earth ◽  
Earth’S Inner Core

It is proposed that the differential rotation of the Earth's inner core deduced by Song and Richards is due to a combination of the deceleration of the Earth's rotation and the viscous drag between the Earth's inner and outer cores. If this model is correct then the dynamic viscosity in the outer core of the Earth can be estimated to be μ≈104 poise. Besides providing a novel way of determining the viscosity of the core, this simple model suggests some new tests and shows how astronomical effects can influence geological phenomena.

Slow differential rotation of the Earth's inner core indicated by temporal changes in scattering

Nature ◽  
2000 ◽  
Vol 405 (6785) ◽  
pp. 445-448 ◽  
Author(s):  
John E. Vidale ◽  
Doug A. Dodge ◽  
Paul S. Earle
Keyword(s):  
Differential Rotation ◽  
Inner Core ◽  
Temporal Changes ◽  
Earth’S Inner Core

Strong shear softening induced by superionic hydrogen in Earth's inner core

2021 ◽  
Vol 568 ◽  
pp. 117014
Author(s):  
Wenzhong Wang ◽  
Yunguo Li ◽  
John P. Brodholt ◽  
Lidunka Vočadlo ◽  
Michael J. Walter ◽  
...  
Keyword(s):  
Inner Core ◽  
Strong Shear ◽  
Earth’S Inner Core
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