Kim, Doyeon, Davis, Paul ORCID: 0000-0001-9888-4729, Lekic, Ved, Maguire, Ross, Compaire, Nicolas, Schimmel, Martin ORCID: 0000-0003-2601-4462, Stutzmann, Eleonore ORCID: 0000-0002-4348-7475, Irving, Jessica C. E., Lognonne, Philippe ORCID: 0000-0002-1014-920X, Scholz, John-Robert ORCID: 0000-0003-1404-2335, Clinton, John, Zenhaeusern, Geraldine, Dahmen, Nikolaj ORCID: 0000-0002-9114-6747, Deng, Sizhuang, Levander, Alan, Panning, Mark P., Garcia, Raphael F., Giardini, Domenico, Hurst, Ken, Knapmeyer-Endrun, Brigitte, Nimmo, Francis, Pike, W. Tom, Pou, Laurent ORCID: 0000-0001-9619-7271, Schmerr, Nicholas, Staehler, Simon C., Tauzin, Benoit, Widmer-Schnidrig, Rudolf ORCID: 0000-0001-9698-2739 and Banerdt, William B. (2021). Potential Pitfalls in the Analysis and Structural Interpretation of Seismic Data from the Mars InSight Mission. Bull. Seismol. Soc. Amer., 111 (6). S. 2982 - 3003. ALBANY: SEISMOLOGICAL SOC AMER. ISSN 1943-3573

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Abstract

The Seismic Experiment for Interior Structure (SEIS) of the InSight mission to Mars has been providing direct information on Martian interior structure and dynamics of that planet since it landed. Compared with seismic recordings on the Earth, ground-motion measurements acquired by SEIS on Mars are not only made under dramatically different ambient noise conditions, but also include idiosyncratic signals that arise from coupling between different InSight sensors and spacecraft components. This work is to synthesize what is known about these signal types, illustrate how they can manifest in waveforms and noise correlations, and present pitfalls in structural interpretations based on standard seismic analysis methods. We show that glitches (a type of prominent transient signal) can produce artifacts in ambient noise correlations. Sustained signals that vary in frequency, such as lander modes that are affected by variations in temperature and wind conditions over the course of the Martian sol, can also contaminate ambient noise results. Therefore, both types of signals have the potential to bias interpretation in terms of subsurface layering. We illustrate that signal processing in the presence of identified nonseismic signals must be informed by an understanding of the underlying physical processes in order for high-fidelity waveforms of ground motion to be extracted. Whereas the origins of the most idiosyncratic signals are well understood, the 2.4 Hz resonance remains debated, and the literature does not contain an explanation of its fine spectral structure. Even though the selection of idiosyncratic signal types discussed in this article may not be exhaustive, we provide guidance on the best practices for enhancing the robustness of structural interpretations.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Kim, DoyeonUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Davis, PaulUNSPECIFIEDorcid.org/0000-0001-9888-4729UNSPECIFIED
Lekic, VedUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Maguire, RossUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Compaire, NicolasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schimmel, MartinUNSPECIFIEDorcid.org/0000-0003-2601-4462UNSPECIFIED
Stutzmann, EleonoreUNSPECIFIEDorcid.org/0000-0002-4348-7475UNSPECIFIED
Irving, Jessica C. E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Lognonne, PhilippeUNSPECIFIEDorcid.org/0000-0002-1014-920XUNSPECIFIED
Scholz, John-RobertUNSPECIFIEDorcid.org/0000-0003-1404-2335UNSPECIFIED
Clinton, JohnUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zenhaeusern, GeraldineUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dahmen, NikolajUNSPECIFIEDorcid.org/0000-0002-9114-6747UNSPECIFIED
Deng, SizhuangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Levander, AlanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Panning, Mark P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garcia, Raphael F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Giardini, DomenicoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hurst, KenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Knapmeyer-Endrun, BrigitteUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nimmo, FrancisUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pike, W. TomUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pou, LaurentUNSPECIFIEDorcid.org/0000-0001-9619-7271UNSPECIFIED
Schmerr, NicholasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Staehler, Simon C.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tauzin, BenoitUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Widmer-Schnidrig, RudolfUNSPECIFIEDorcid.org/0000-0001-9698-2739UNSPECIFIED
Banerdt, William B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-604466
DOI: 10.1785/0120210123
Journal or Publication Title: Bull. Seismol. Soc. Amer.
Volume: 111
Number: 6
Page Range: S. 2982 - 3003
Date: 2021
Publisher: SEISMOLOGICAL SOC AMER
Place of Publication: ALBANY
ISSN: 1943-3573
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
NOISE; AUTOCORRELATION; RESOLUTIONMultiple languages
Geochemistry & GeophysicsMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/60446

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