Measurements of sound propagation in Mars' lower atmosphere

Chide, Baptiste; Jacob, Xavier; Petculescu, Andi; Hueso, R.; Maurice, S.; Seel, Fabian; Schröder, Susanne; Wiens, Roger C.; Gillier, Martin; Murdoch, Naomi; Lanza, N.; Bertrand, Tanguy; Leighton, T.G.; Joseph, Phillip; Pilleri, P.; Mimoun, David; Stott, Alexander; Juárez, Manuel de la Torre; Munguira, Asier; Sánchez‐Lavega, A.; Martı́nez, G.; Larmat, Carène; Lasue, J.; Newman, Claire; Pla‐García, Jorge; Bernardi, Pernelle; Harri, A. M.; Genzer, M.; Lépinette, Alain

doi:10.1016/j.epsl.2023.118200

Cited by 5 publications

(6 citation statements)

References 39 publications

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“…Thus, the signal on the microphone would vary regardless of propagation losses. This has already been observed on Mars (Chide et al., 2023).…”

Section: Discussionsupporting

confidence: 70%

“…Measurements of speed of sound (Maurice et al, 2022) and attenuation coefficient (Chide et al, 2023) have been published at different frequencies using the helicopter and the LIBS instrument. The helicopter produces sound at its blade passage frequency, 84 Hz, and its first harmonic 168 Hz (R. D. Lorenz et al, 2023) whereas LIBS sounds ranges from 3 to 21 kHz (Chide et al, 2023). The helicopter flies at an altitude of 5-10 m above the ground, the microphone is 1.8 m from the ground and the LIBS experiment shockwaves are located on the ground.…”

Section: In Situ Experimental Validationmentioning

confidence: 99%

“…Figure 20 shows that every attenuation coefficient data point falls within the predicted value range once the error bars are taken into account. The error bars are very large, especially for the helicopter, when compared to the (Chide et al, 2023) compared to the outputs of the physics-based acoustic model. The light gray area is the predicted range of attenuation coefficient for the laser-induced breakdown spectroscopy atmospheric conditions (L s = 0°-360°, Local True Solar Time (LTST) from 11 to 14 and an altitude of 0.9 m), the dark gray area is the predicted range of attenuation coefficient for the helicopter atmospheric condition (L s = 38°-48°, LTST from 11 to 13 and an altitude of 6 m).…”

Section: In Situ Experimental Validationmentioning

confidence: 99%

“…The presence of an operational microphone at the surface of Mars (Mimoun et al, 2023) that motivated in part this work also allows the comparison of the outputs of the model to in-situ experimental data. Measurements of speed of sound (Maurice et al, 2022) and attenuation coefficient (Chide et al, 2023) have been published at different frequencies using the helicopter and the LIBS instrument. The helicopter produces sound at its blade passage frequency, 84 Hz, and its first harmonic 168 Hz (R. D. Lorenz et al, 2023) whereas LIBS sounds ranges from 3 to 21 kHz (Chide et al, 2023).…”

Section: In Situ Experimental Validationmentioning

confidence: 99%

See 3 more Smart Citations

Geographical, Seasonal and Diurnal Variations of Acoustic Attenuation, and Sound Speed in the Near‐Surface Martian Atmosphere

Gillier,

Petculescu,

Murdoch

et al. 2024

JGR Planets

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This work introduces a comprehensive model of sound attenuation and speed on Mars, in light of the recent operation of several microphones on the surface of Mars. The proposed acoustic model calculates the sound speed and attenuation throughout the near‐surface Martian atmosphere based on first‐principles. We evaluate the effects of the seasonal and diurnal cycle of air temperature, pressure and CO2, as well as the concentration of airborne dust on the sound attenuation. The attenuation and speed of sound are most sensitive to the air temperature and, therefore, they vary with the diurnal temperature cycle and to a lesser degree with the seasonal changes in temperature. The speed of sound also varies with the seasonal variations of the concentration of CO2. The main outcome of this work is an acoustic model capable of computing the sound speed and attenuation for any location at the Martian surface at any time of year and any time of day.

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“…Thus, the signal on the microphone would vary regardless of propagation losses. This has already been observed on Mars (Chide et al., 2023).…”

Section: Discussionsupporting

confidence: 70%

Section: In Situ Experimental Validationmentioning

confidence: 99%

Section: In Situ Experimental Validationmentioning

confidence: 99%

Section: In Situ Experimental Validationmentioning

confidence: 99%

See 2 more Smart Citations

Geographical, Seasonal and Diurnal Variations of Acoustic Attenuation, and Sound Speed in the Near‐Surface Martian Atmosphere

Gillier,

Petculescu,

Murdoch

et al. 2024

JGR Planets

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“…More recently, Mars has seen the operation of the Entry, Descent, and Landing (EDL) and SuperCam microphones (Mimoun et al, 2023) on NASA's Perseverance rover, as well as a microphone on the Chinese National Space Administration's Zhurong rover (Zou et al, 2021). These microphones have already provided insights into the acoustic properties of the Martian atmosphere, either by capturing sounds from artificial sources like the Ingenuity helicopter (Lorenz et al, 2023) and the Laser Induced Breakdown Spectroscopy (LIBS) experiment (Chide et al, 2022(Chide et al, , 2023 or by recording signals generated by the Martian environment, such as wind patterns (Stott et al, 2023) and a dust devil with the associated saltation (Murdoch et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Acoustic Propagation in the Near‐Surface Martian Atmosphere

Gillier,

Petculescu,

Stott

et al. 2024

JGR Planets

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This work introduces a comprehensive model of sound propagation on Mars, in light of the recent operation of several microphones on the Martian surface. The main outcome of this work is an operational acoustic model capable of simulating the sound field created by any source, at any location on the Martian surface, at any time. Expanding on the result of previous work (Gillier et al., 2024, https://doi.org/10.1029/2023je008257), we use the parabolic equation method for sound propagation in order to obtain the overall sound field produced by a source, in a given atmospheric composition and state, and accounting for ground properties. The resulting model enables the study of acoustics on Mars, and has the potential also to be used to probe the properties of the Martian environment using acoustic measurements with known sources. We investigate the effects of the Martian ground and the vertical profile of temperature and wind, on sound propagation. We find that the ground has a minor effect on sound propagation, and the wind profile strongly influences sound propagation as on Earth. However, the midday near surface temperature profiles on Mars are shown to cause refraction, which generates non‐negligible acoustic losses that are an order of magnitude stronger than typical refraction‐related acoustic losses on Earth. We show that the effect of the Martian atmospheric turbulence is to slightly reduce the acoustic losses due to refraction. Finally, we apply our model to show that refraction and atmospheric turbulence have a negligible effect on the propagation of sound from Ingenuity to the Perseverance rover.

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Sound-Intensity Variations on Mars

Day¹

2023

Physics

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Measurements of sound propagation in Mars' lower atmosphere

Cited by 5 publications

References 39 publications

Geographical, Seasonal and Diurnal Variations of Acoustic Attenuation, and Sound Speed in the Near‐Surface Martian Atmosphere

Geographical, Seasonal and Diurnal Variations of Acoustic Attenuation, and Sound Speed in the Near‐Surface Martian Atmosphere

Acoustic Propagation in the Near‐Surface Martian Atmosphere

Sound-Intensity Variations on Mars

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