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Journal Articles Science Year : 2011

Seismic Detection of the Lunar Core

Pei-Ying Lin
  • Function : Author
Edward Garnero
  • Function : Author
Quentin Williams
  • Function : Author


Despite recent insight regarding the history and current state of the Moon from satellite sensing and analyses of limited Apollo-era seismic data, deficiencies remain in our understanding of the deep lunar interior. We reanalyzed Apollo lunar seismograms using array-processing methods to search for the presence of reflected and converted seismic energy from the core. Our results suggest the presence of a solid inner and fluid outer core, overlain by a partially molten boundary layer. The relative sizes of the inner and outer core suggest that the core is ~60% liquid by volume. Based on phase diagrams of iron alloys and the presence of partial melt, the core probably contains less than 6 weight % of lighter alloying components, which is consistent with a volatile-depleted interior.

Dates and versions

hal-03964121 , version 1 (30-01-2023)



Renee Weber, Pei-Ying Lin, Edward Garnero, Quentin Williams, Philippe Lognonné. Seismic Detection of the Lunar Core. Science, 2011, 331 (6015), pp.309-312. ⟨10.1126/science.1199375⟩. ⟨hal-03964121⟩
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