How light element addition can lower core liquid wave speeds

G. Helffrich*

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

23 Citations (Scopus)


Sound speeds in liquid mixtures are governed by an interplay between the properties of their end-members. The mixture's bulk modulus and density are each affected by end-member volumes and how those end-members mix. Particularly non-intuitive effects can arise when end-member mixing volumes are non-ideal, even mildly so. Non-ideality could also arise in metallic liquids of the Earth's outer core and exhibit some counterintuitive effects, whose origin is explained here.

Original languageEnglish
Pages (from-to)1065-1070
Number of pages6
JournalGeophysical Journal International
Issue number3
Publication statusPublished - Mar 2012


  • Body waves
  • Composition of the core
  • Equations of state


Dive into the research topics of 'How light element addition can lower core liquid wave speeds'. Together they form a unique fingerprint.

Cite this