On‐Deck Seismology: Lessons from InSight for Future Planetary Seismology
Name
JGR Planets - 2020 - Panning - On‐Deck Seismology Lessons from InSight for Future Planetary Seismology.pdf
Description
Published version
Size
14.38 MB
Format
Adobe PDF
Checksum (MD5)
a9a3af2f34d0f4202be2af1c63a0a35e
Author(s)
Panning, MP
Pike, WT
Lognonné, P
Banerdt, WB
Murdoch, N
Banfield, D
Charalambous, C
Kedar, S
Lorenz, RD
Marusiak, AG
Date Issued
April 15, 2020
Journal
Journal of Geophysical Research: Planets
Publisher
American Geophysical Union
Citation
Panning, M. P., Pike, W. T., Lognonné, P., Banerdt, W. B., Murdoch, N., Banfield, D., et al. (2020). On-deck seismology: Lessons from InSight for future planetary seismology. Journal of Geophysical Research: Planets, 125, e2019JE006353.
Version
Final published version
Abstract
Before deploying to the surface of Mars, the short‐period (SP) seismometer of the InSight mission operated on deck for a total of 48 hr. This data set can be used to understand how deck‐mounted seismometers can be used in future landed missions to Mars, Europa, and other planetary bodies. While operating on deck, the SP seismometer showed signals comparable to the Viking‐2 seismometer near 3 Hz where the sensitivity of the Viking instrument peaked. Wind sensitivity showed similar patterns to the Viking instrument, although amplitudes on InSight were ∼80% larger for a given wind velocity. However, during the low‐wind evening hours, the instrument noise levels at frequencies between 0.1 and 1 Hz were comparable to quiet stations on Earth, although deployment to the surface below the Wind and Thermal Shield lowered installation noise by roughly 40 dB in acceleration power. With the observed noise levels and estimated seismicity rates for Mars, detection probability for quakes for a deck‐mounted instrument is low enough that up to years of on‐deck recordings may be necessary to observe an event. Because the noise is dominated by wind acting on the lander, though, deck‐mounted seismometers may be more practical for deployment on airless bodies, and it is important to evaluate the seismicity of the target body and the specific design of the lander. Detection probabilities for operation on Europa reach over 99% for some proposed seismicity models for a similar duration of operation if noise levels are comparable to low‐wind time periods on Mars.
MIT Department
Haystack Observatory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1029/2019je006353
