TY  - JOUR
AU  - Helffrich George
PY  - 2016//
TI  - Ground Truth
KW  - anisotropy density liquid outer core seismic wave speeds seismological properties solid inner core
N2  - Summary The seismologically observed structures of both the solid inner core and the liquid outer core are the ground truth for the material properties of solid and liquid iron and its alloying elements. The key properties, from a materials science standpoint, are density, seismic wave speeds, and anisotropy. The anisotropy of the inner core does not appear to be simple; it varies laterally at the same radial level as well as varying radially. Four themes including uncertainty, model variability, virtues of solid vs. liquid properties, and composition, are the focus of this chapter. Their elaboration hopefully help present and future investigators of the physical state and composition of the core understand the problems associated with certain types of data and to focus experimental work on avenues of research providing tight observational constraints on the core's character.
SN  - 9781118992487
SN  - 9781118992487
UR  - http://dx.doi.org/10.1002/9781118992487.ch9
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=6770), last updated on Sat, 29 Jun 2024 10:16:14 +0200
ID  - HelffrichGeorge2016
ER  -