Imperial College London
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Professor Gareth Collins

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Planetary Science
 
 
 
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Contact

 

+44 (0)20 7594 1518g.collins Website

 
 
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Location

 

4.83Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Fernando:2021:10.1029/2020ea001585,
author = {Fernando, B and Wójcicka, N and Froment, M and Maguire, R and Stähler, SC and Rolland, L and Collins, GS and Karatekin, O and Larmat, C and Sansom, EK and Teanby, NA and Spiga, A and Karakostas, F and Leng, K and NissenMeyer, T and Kawamura, T and Giardini, D and Lognonné, P and Banerdt, B and Daubar, IJ},
doi = {10.1029/2020ea001585},
journal = {Earth and Space Science},
pages = {1--21},
title = {Listening for the landing: seismic detections of perseverance's arrival at Mars with InSight},
url = {http://dx.doi.org/10.1029/2020ea001585},
volume = {8},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The entry, descent, and landing (EDL) sequence of NASA's Mars 2020 Perseverance Rover will act as a seismic source of known temporal and spatial localization. We evaluate whether the signals produced by this event will be detectable by the InSight lander (3,452 km away), comparing expected signal amplitudes to noise levels at the instrument. Modeling is undertaken to predict the propagation of the acoustic signal (purely in the atmosphere), the seismoacoustic signal (atmosphere-to-ground coupled), and the elastodynamic seismic signal (in the ground only). Our results suggest that the acoustic and seismoacoustic signals, produced by the atmospheric shock wave from the EDL, are unlikely to be detectable due to the pattern of winds in the martian atmosphere and the weak air-to-ground coupling, respectively. However, the elastodynamic seismic signal produced by the impact of the spacecraft's cruise balance masses on the surface may be detected by InSight. The upper and lower bounds on predicted ground velocity at InSight are 2.0 × 10−14 and 1.3 × 10−10 m s−1. The upper value is above the noise floor at the time of landing 40% of the time on average. The large range of possible values reflects uncertainties in the current understanding of impact-generated seismic waves and their subsequent propagation and attenuation through Mars. Uncertainty in the detectability also stems from the indeterminate instrument noise level at the time of this future event. A positive detection would be of enormous value in constraining the seismic properties of Mars, and in improving our understanding of impact-generated seismic waves.
AU  - Fernando,B
AU  - Wójcicka,N
AU  - Froment,M
AU  - Maguire,R
AU  - Stähler,SC
AU  - Rolland,L
AU  - Collins,GS
AU  - Karatekin,O
AU  - Larmat,C
AU  - Sansom,EK
AU  - Teanby,NA
AU  - Spiga,A
AU  - Karakostas,F
AU  - Leng,K
AU  - NissenMeyer,T
AU  - Kawamura,T
AU  - Giardini,D
AU  - Lognonné,P
AU  - Banerdt,B
AU  - Daubar,IJ
DO  - 10.1029/2020ea001585
EP  - 21
PY  - 2021///
SN  - 2333-5084
SP  - 1
TI  - Listening for the landing: seismic detections of perseverance's arrival at Mars with InSight
T2  - Earth and Space Science
UR  - http://dx.doi.org/10.1029/2020ea001585
UR  - https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020EA001585
UR  - http://hdl.handle.net/10044/1/89244
VL  - 8
ER  -
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