Journal article
The effect of phase transformations at the inner core boundary on the Slichter modes
Physics of the earth and planetary interiors, v 178(3)
2010
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Abstract
We analyze the effect of phase transformations at the inner core boundary on the period of Slichter modes. We show that the presence of phase transformations can lead to qualitatively new phenomena. In particular, the frequency is
inversely proportional to the density contrast at the inner core boundary. We offer a thought experiment that demonstrates this effect. The complete analysis combines an instantaneous kinetics model for phase transformations with a simple planetary model: a rigid inner core, an inviscid, incompressible, constant density outer core, a stationary mantle. The reciprocal dependence on the density contrast leads to periods that are an order of magnitude shorter than those predicted by models that disallow phase transformations.
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Details
- Title
- The effect of phase transformations at the inner core boundary on the Slichter modes
- Creators
- Pavel Grinfeld - Drexel UniversityJack Wisdom - MIT--EAPS, United States
- Publication Details
- Physics of the earth and planetary interiors, v 178(3)
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mathematics
- Web of Science ID
- WOS:000274969700006
- Scopus ID
- 2-s2.0-74649085188
- Other Identifier
- 991019312347104721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Geochemistry & Geophysics