← Back to Sessions

Probing Small-scale Lunar Mantle Heterogeneities Using High-frequency P-wave Scattering from Shallow Moonquakes

Description: 

Small-scale heterogeneities in the lunar mantle can be detected through high-frequency scattering of seismic waves [1], but their characterization is limited by uncertainties in phase picking. In this study, we present a systematic analysis of P-wave arrival times from shallow moonquakes, using a refined picking strategy based on a detailed characterization of pre-event noise and Signal-to-Noise Ratio (SNR). These improved P-arrival time estimates allow a robust analysis of waveform distorsions at high frequencies as a function of epicentral distance. We quantify the amplitude and frequency dependence of P-wave scattering and use these observations to constrain the scale and distribution of small-scale heterogeneities in the deep lunar mantle. Our results will provide new seismic constraints on the thermal state and structural state of the Moon’s interior.

[1] Charalambous et al. (2025), Science, doi : 10.1126/science.adk4292

Session: Planetary and Gravitational Wave Seismology [Poster]

Type: Poster

Date: 4/15/2026

Presentation Time: 08:00 AM (local time)

Presenting Author: Ramon Margarit

Student Presenter: Yes

Invited Presentation: 

Poster Number: 137

Authors