Journal article Open Access

Seismic Detection of the Lunar Core

Weber, Renee C.; Lin, Pei-Ying; Garnero, Edward J.; Williams, Quentin; Lognonné, Philippe

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.
Files (831.5 kB)
Name Size
article.pdf
md5:6d877efa3cc827ababd44b1f212b6355
831.5 kB Download
461
758
views
downloads
Views 461
Downloads 758
Data volume 630.3 MB
Unique views 453
Unique downloads 728

Share

Cite as