Revisiting Lunar Seismic Experiment Data Using the Multichannel Simulation with One Receiver (MSOR) Approach and Random Field Modeling
| Autor: | Joseph T. Coe, Siavash Mahvelati |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010504 meteorology & atmospheric sciences
Wave propagation Astronomy and Astrophysics 01 natural sciences Regolith Physics::Geophysics Coda symbols.namesake Planetary science Geology of the Moon Space and Planetary Science Surface wave 0103 physical sciences Earth and Planetary Sciences (miscellaneous) symbols Rayleigh wave 010303 astronomy & astrophysics Seismogram Seismology Geology 0105 earth and related environmental sciences |
| Zdroj: | Earth, Moon, and Planets. 124:73-90 |
| ISSN: | 1573-0794 0167-9295 |
| DOI: | 10.1007/s11038-020-09536-6 |
| Popis: | Major advancements in surface wave testing over the past 2 decades have led researchers to revisit and re-analyze archived seismic records, particularly those involving measurements on the Moon. The goal of such recent efforts with lunar seismic measurements has been to gain further insights into lunar geology. We examined the active seismic data from the Apollo 16 mission for their surface wave information using a multichannel approach. The inversion of Rayleigh surface waves provided a subsurface estimate for the uppermost 8 m of the lunar subsurface with the shear wave velocities varying from 40 to 50 m/s at the surface to velocities in the range of 95–145 m/s with an average of 120 m/s at a depth of about 7 m. Generally, the results from this inversion demonstrated good agreement with previous studies. Also, we carried out numerical modeling of wave propagation in a highly-heterogeneous domain to examine the effects of such anomalous features on the acquired seismograms. Results confirmed that a sharp-contrast bi-material domain can indeed produce significant coda wave as reflected on the lunar seismic traces. |
| Databáze: | OpenAIRE |
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