Time dependent analysis of the 10S2 Quintet

The time dependent analysis of the normal mode ₁₀S₂ near 4040 µHz allows a precise determination of the frequencies of the five singlets and reveals a frequency modulation by 23 µHz, probably generated by the moon. The results of the data from 18 stations distributed worldwide deliver very good matching results and may help to figure out some properties of the isotropic layer at the top of the inner core.