Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000
Seismometers of the InSight probe (Interior Exploration using Seismic Investigation, Geodesy and Heat Transport) currently operating on Mars have recorded not only seismic events but also high-frequency non-seismic periodic signals that appear to have been induced by variations in the Martian enviro...
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| Format: | Article |
| Language: | English |
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Science Press
2023-03-01
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| Series: | Earth and Planetary Physics |
| Subjects: | |
| Online Access: | http://www.eppcgs.org/article/doi/10.26464/epp2023033?pageType=en |
| _version_ | 1797881321642524672 |
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| author | HuiXing Bi DaoYuan Sun MingWei Dai |
| author_facet | HuiXing Bi DaoYuan Sun MingWei Dai |
| author_sort | HuiXing Bi |
| collection | DOAJ |
| description | Seismometers of the InSight probe (Interior Exploration using Seismic Investigation, Geodesy and Heat Transport) currently operating on Mars have recorded not only seismic events but also high-frequency non-seismic periodic signals that appear to have been induced by variations in the Martian environment and the hardware. Here, we report an observation of a long-period signal with a dominant period of ~20 s from Martian solar days (Sol) 800 to Sol 1,000. This 20-s signal is detected mostly at quiet nighttime — from 22:00 to 04:00 LMST (Local Mean Solar Time) — at the InSight landing site. The measurement of the particle motion suggests that this linearly polarized signal focuses on the horizontal plane with an angle of ~30° from the north. By examining the temporal variation of the signal’s amplitude and polarization angle and its times of occurrence in relation to the planet’s atmospheric data, we suggest that this 20-s signal may be relevant to wind and temperature variations on Mars. Furthermore, we study the possible influence of this 20-s signal on the noise autocorrelation and find that the stacked autocorrelograms can be quite different when the 20-s signal is present. |
| first_indexed | 2024-04-10T03:16:55Z |
| format | Article |
| id | doaj.art-db84bf27f1ed477d9f26e55b68c7ce55 |
| institution | Directory Open Access Journal |
| issn | 2096-3955 |
| language | English |
| last_indexed | 2024-04-10T03:16:55Z |
| publishDate | 2023-03-01 |
| publisher | Science Press |
| record_format | Article |
| series | Earth and Planetary Physics |
| spelling | doaj.art-db84bf27f1ed477d9f26e55b68c7ce552023-03-13T07:31:31ZengScience PressEarth and Planetary Physics2096-39552023-03-017219321510.26464/epp2023033RA359-bihuixing-FObservation 20-s periodic signals on Mars from InSight, Sols 800−1,000HuiXing Bi0DaoYuan Sun1MingWei Dai2Deep Space Exploration Laboratory/School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaDeep Space Exploration Laboratory/School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaDeep Space Exploration Laboratory/School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, ChinaSeismometers of the InSight probe (Interior Exploration using Seismic Investigation, Geodesy and Heat Transport) currently operating on Mars have recorded not only seismic events but also high-frequency non-seismic periodic signals that appear to have been induced by variations in the Martian environment and the hardware. Here, we report an observation of a long-period signal with a dominant period of ~20 s from Martian solar days (Sol) 800 to Sol 1,000. This 20-s signal is detected mostly at quiet nighttime — from 22:00 to 04:00 LMST (Local Mean Solar Time) — at the InSight landing site. The measurement of the particle motion suggests that this linearly polarized signal focuses on the horizontal plane with an angle of ~30° from the north. By examining the temporal variation of the signal’s amplitude and polarization angle and its times of occurrence in relation to the planet’s atmospheric data, we suggest that this 20-s signal may be relevant to wind and temperature variations on Mars. Furthermore, we study the possible influence of this 20-s signal on the noise autocorrelation and find that the stacked autocorrelograms can be quite different when the 20-s signal is present.http://www.eppcgs.org/article/doi/10.26464/epp2023033?pageType=enmarsperiodic signalparticle motionautocorrelation |
| spellingShingle | HuiXing Bi DaoYuan Sun MingWei Dai Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000 Earth and Planetary Physics mars periodic signal particle motion autocorrelation |
| title | Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000 |
| title_full | Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000 |
| title_fullStr | Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000 |
| title_full_unstemmed | Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000 |
| title_short | Observation 20-s periodic signals on Mars from InSight, Sols 800−1,000 |
| title_sort | observation 20 s periodic signals on mars from insight sols 800 1 000 |
| topic | mars periodic signal particle motion autocorrelation |
| url | http://www.eppcgs.org/article/doi/10.26464/epp2023033?pageType=en |
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