Superrotation of Earth’s Inner Core, Extraterrestrial Impacts, and the Effective Viscosity of Outer Core
Joint Authors
Mohazzabi, Pirooz
Skalbeck, John D.
Source
International Journal of Geophysics
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-05-21
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The recently verified superrotation of Earth’s inner core is examined and a new model is presented which is based on the tidal despinning of the mantle and the viscosity of the outer core.
The model also takes into account other damping mechanisms arising from the inner core superrotation such as magnetic and gravitational coupling as well as contribution from eddy viscosity in the outer core.
The effective viscosity obtained in this model confirms a previously well constrained value of about 103 Pa s.
In addition, the model shows that the currently measured superrotation of the inner core must be almost exactly equal to its asymptotic or steady-state value.
The effect of extraterrestrial impacts is also investigated, and it is shown that perturbations due to such impacts can only persist over a short geological time.
American Psychological Association (APA)
Mohazzabi, Pirooz& Skalbeck, John D.. 2015. Superrotation of Earth’s Inner Core, Extraterrestrial Impacts, and the Effective Viscosity of Outer Core. International Journal of Geophysics،Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1066059
Modern Language Association (MLA)
Mohazzabi, Pirooz& Skalbeck, John D.. Superrotation of Earth’s Inner Core, Extraterrestrial Impacts, and the Effective Viscosity of Outer Core. International Journal of Geophysics No. 2015 (2015), pp.1-8.
https://search.emarefa.net/detail/BIM-1066059
American Medical Association (AMA)
Mohazzabi, Pirooz& Skalbeck, John D.. Superrotation of Earth’s Inner Core, Extraterrestrial Impacts, and the Effective Viscosity of Outer Core. International Journal of Geophysics. 2015. Vol. 2015, no. 2015, pp.1-8.
https://search.emarefa.net/detail/BIM-1066059
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1066059