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| DOI | 10.1029/2020GL089099 |
| Geophysical Observations of Phobos Transits by InSight | |
| Stähler S.C.; Widmer-Schnidrig R.; Scholz J.-R.; van Driel M.; Mittelholz A.; Hurst K.; Johnson C.L.; Lemmon M.T.; Lognonné P.; Lorenz R.D.; Müller N.T.; Pou L.; Spiga A.; Banfield D.; Ceylan S.; Charalambous C.; Clinton J.; Giardini D.; Nimmo F.; Panning M.; Zürn W.; Banerdt W.B. | |
| 发表日期 | 2020 |
| ISSN | 0094-8276 |
| 卷号 | 47期号:19 |
| 英文摘要 | Since landing on Mars, the NASA InSight lander has witnessed eight Phobos and one Deimos transits. All transits could be observed by a drop in the solar array current and the surface temperature, but more surprisingly, for several ones, a clear signature was recorded with the seismic sensors and the magnetometer. We present a preliminary interpretation of the seismometer data as temperature-induced local deformation of the ground, supported by terrestrial analog experiments and finite-element modeling. The magnetic signature is most likely induced by changing currents from the solar arrays. While the observations are not fully understood yet, the recording of transit-related phenomena with high sampling rate will allow more precise measurements of the transit times, thus providing additional constraints for the orbital parameters of Phobos. The response of the seismometer can potentially also be used to constrain the thermoelastic properties of the shallow regolith at the landing site. ©2020. American Geophysical Union. All Rights Reserved. |
| 英文关键词 | NASA; Seismographs; Seismology; Geophysical observations; Magnetic signatures; Precise measurements; Solar-array currents; Surface temperatures; Temperature-induced; Terrestrial analogs; Thermoelastic properties; Solar cell arrays; geophysical survey; magnetometer; Mars; precision; regolith; seismograph; soil temperature; spacecraft |
| 语种 | 英语 |
| 来源期刊 | Geophysical Research Letters
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/169618 |
| 作者单位 | Institute of Geophysics, ETH Zürich, Zürich, Switzerland; Black Forest Observatory, Institute of Geodesy, Stuttgart University, Wolfach, Germany; Max Planck Institute for Solar System Research, Göttingen, Germany; Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States; Planetary Science Institute, Tucson, AZ, United States; Space Science Institute, Boulder, CO, United States; Université de Paris, Institut de physique du globe de Paris, CNRS, Paris, France; Johns Hopkins Applied Physics Laboratory, Laurel, MD, United States; German Aerospace Center (DLR), Institute of Planetary Research, Berlin, Germany; Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, CA, United States; Laboratoire de Météorologie Dynamique / Institut Pierre Simon Laplace (LMD/IPSL), Sorbonne Université, Centre National de la Recherche Scientifique (CNRS... |
| 推荐引用方式 GB/T 7714 | Stähler S.C.,Widmer-Schnidrig R.,Scholz J.-R.,et al. Geophysical Observations of Phobos Transits by InSight[J],2020,47(19). |
| APA | Stähler S.C..,Widmer-Schnidrig R..,Scholz J.-R..,van Driel M..,Mittelholz A..,...&Banerdt W.B..(2020).Geophysical Observations of Phobos Transits by InSight.Geophysical Research Letters,47(19). |
| MLA | Stähler S.C.,et al."Geophysical Observations of Phobos Transits by InSight".Geophysical Research Letters 47.19(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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