Imperial College London
Alternate

DrElizabethDay

Faculty of Engineering, Department of Earth Science & Engineering

Senior Teaching Fellow
 
 
 
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Contact

 

+44 (0)20 7594 6529e.day

 
 
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Location

 

1.39Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Lableis:2017:10.1002/2017GC007149,
author = {Lableis, M and Waszek, L and Day, E},
doi = {10.1002/2017GC007149},
journal = {Geochemistry, Geophysics, Geosystems},
pages = {4016--4026},
title = {GrowYourIC: a step towards a coherent model of the Earth's inner core seismic structure},
url = {http://dx.doi.org/10.1002/2017GC007149},
volume = {18},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A complex inner core structure has been well-established from seismic studies, showing radial and lateral heterogeneities at various length scales. Yet, no geodynamic model is able to explain all the features observed. One of the main limits for this is the lack of tools to compare seismic observations and numerical models successfully. We use here a new Python tool called GrowYourIC to compare models of inner core structure. We calculate properties of geodynamic models of the inner core along seismic ray paths, for random or user-specified datasets. We test kinematic models which simulate fast lateral translation, super-rotation, and differential growth. We explore first the influence on a real inner core data set, which has a sparse coverage of the inner core boundary. Such a data set is however able to successfully constrain the hemispherical boundaries due to a good sampling of latitudes. Combining translation and rotation could explain some of the features of the boundaries separating the inner core hemispheres. The depth shift of the boundaries, observed by some authors, seems unlikely to be modelled by a fast translation, but could be produced by slow translation associated to super-rotation.
AU  - Lableis,M
AU  - Waszek,L
AU  - Day,E
DO  - 10.1002/2017GC007149
EP  - 4026
PY  - 2017///
SN  - 1525-2027
SP  - 4016
TI  - GrowYourIC: a step towards a coherent model of the Earth's inner core seismic structure
T2  - Geochemistry, Geophysics, Geosystems
UR  - http://dx.doi.org/10.1002/2017GC007149
UR  - http://hdl.handle.net/10044/1/52079
VL  - 18
ER  -
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