InSight Auxiliary Payload Sensor Suite (APSS)

Banfield, D.; Rodriguez-Manfredi, J. A.; Russell, C. T.; Rowe, K.; Leneman, D.; Lai, Hairong; Cruce, P.; Means, J. D.; Johnson, C. L.; Mittelholz, A.; Joy, S. P.; J., P.; Mikellides, Ioannis G.; Carpenter, Scott A.; Navarro, Sara; Sebastián, Eduardo; Gómez‐Elvira, Javier; Torres, J.; Mora, L.; Peinado, V.; Lepinette, A.; Hurst, K.; Lognonné, Philippe; Smrekar, S.; Banerdt, W. B.

doi:10.1007/s11214-018-0570-x

Cited by 134 publications

(173 citation statements)

References 43 publications

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“…Finally, we consider the use of seismological data to constrain the atmospheric dynamics. We suggest that this is a valuable complement to measurements by InSight's weather station (Banfield et al, 2019), in particular for large amplitude signals recorded by the pressure sensor and putatively attributed to atmospheric gravity waves. We conclude on the interest of these methods for seismic signal detection and analysis.…”

Section: Introductionmentioning

confidence: 82%

Pressure Effects on the SEIS‐InSight Instrument, Improvement of Seismic Records, and Characterization of Long Period Atmospheric Waves From Ground Displacements

et al. 2020

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Mars atmospheric pressure variations induce ground displacements through elastic deformations. The various sensors of the InSight mission were designed in order to be able to understand and correct for these ground deformations induced by atmospheric effects. Particular efforts were made, on one hand, to avoid direct pressure and wind effects on the seismometer and, on the other hand, to have a high performance pressure sensor operating in the same frequency range as the seismometer. As a consequence of these technical achievements and the low background seismic noise of Mars, the InSight mission is opening a new science domain in which the ground displacements can be used to perform atmospheric science. This study presents an analysis of pressure and seismic signals and the relations between them. After a short description of the pressure and seismic sensors, we present an analysis of these signals as a function of local time at the InSight location. Then the coherent signals recorded by both pressure and seismic sensors are described and interpreted in terms of atmospheric signals and ground deformation processes. Two different methods to remove the pressure effects recorded by SEIS sensors are presented, and their efficiency is estimated and compared. These decorrelation methods allow the pressure generated noise to be reduced by a factor of 2 during the active day time period. Finally, an analysis of SEIS signals induced by gravity waves demonstrates the interest of ground displacement measurements to characterize their arrival azimuth.

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Section: Introductionmentioning

confidence: 82%

Pressure Effects on the SEIS‐InSight Instrument, Improvement of Seismic Records, and Characterization of Long Period Atmospheric Waves From Ground Displacements

et al. 2020

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“…The purpose of this study is to use similar methodology (with some improvements) to Fillingim et al (2010) to calculate expected current patterns in the ionosphere above the InSight lander (Banerdt & Russell, 2017), which landed on Mars on 26 November 2018 carrying the first surface magnetometer (Banfield et al, 2019).…”

Section: Expectations For Insight Fluxgate Magnetometermentioning

confidence: 99%

“…The purpose of this study is to use similar methodology (with some improvements) to Fillingim et al () to calculate expected current patterns in the ionosphere above the InSight lander (Banerdt & Russell, ), which landed on Mars on 26 November 2018 carrying the first surface magnetometer (Banfield et al, ). Here, instead of making simple, static assumptions about the magnetic field and neutral wind (e.g., Fillingim et al, ), we use more realistic assumptions from time‐dependent models of Mars' global plasma interaction, ionosphere, and upper atmospheric wind patterns, evaluated above the InSight landing site at Elysium Planitia (135°E, 4.5°N).…”

Section: Introductionmentioning

confidence: 99%

Modeling Wind‐Driven Ionospheric Dynamo Currents at Mars: Expectations for InSight Magnetic Field Measurements

Lillis

Fillingim

et al. 2019

Geophysical Research Letters

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We model expected dynamo currents above, and resulting magnetic field profiles at, InSight's landing site on Mars, including for the first time the effect of electron‐ion collisions. We calculate their diurnal and seasonal variability using inputs from global models of the Martian thermosphere, ionosphere, and magnetosphere. Modeled currents primarily depend on plasma densities and the strength of the neutral wind component perpendicular to the combined crustal and draped magnetic fields that thread the ionosphere. Negligible at night, currents are the strongest in the late morning and near solstices due to stronger winds and near perihelion due to both stronger winds and higher plasma densities from solar EUV photoionization. Resulting surface magnetic fields of tens of nanotesla and occasionally >100 nT may be expected at the InSight landing site. We expect currents and surface fields to vary significantly with changes in the draped magnetic field caused by Mars' dynamic solar wind environment.

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“…The spacecraft also carries a meteorology package, a magnetometer (Banfield et al 2018), two color cameras to image the surface , and an arm to deploy the instruments onto the surface , that together allow investigations of the atmosphere, surface geology, and physical properties of surface materials. The geology investigation on InSight is considered ancillary science that does not interfere with the main science requirements or objectives of the mission.…”

Section: Introductionmentioning

confidence: 99%