| Title: |
Radar blackouts in Mars' atmosphere produced by space weather events during the life time of Mars Express and Mars Reconnaissance Orbiter |
| Authors: |
Sanchez-Cano, Beatriz; Lester, Mark; Blelly, Pierre-Louis; Witasse, Olivier; Cartacci, Marco; Orosei, Roberto; Opgenoorth, Hermann; Lillis, Rob; Leblanc, François; Milan, Stephen, E; Plane, John, M C |
| Contributors: |
Department of Physics and Astronomy Leicester; University of Leicester; Institut de recherche en astrophysique et planétologie (IRAP); Université Toulouse III - Paul Sabatier (UT3); Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Communauté d'universités et établissements de Toulouse (Comue de Toulouse)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS); European Space Research and Technology Centre (ESTEC); Agence Spatiale Européenne = European Space Agency (ESA); Istituto di Astrofisica e Planetologia Spaziali - INAF (IAPS); Istituto Nazionale di Astrofisica Rome (INAF); Istituto di Radioastronomia Bologna (IRA); Department of Physics Umeå; Umeå University = Umeå Universitet; Space Sciences Laboratory Berkeley (SSL); University of California Berkeley (UC Berkeley); University of California (UC)-University of California (UC); HELIOS - LATMOS; Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS); Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); School of Chemistry Leeds; University of Leeds |
| Source: |
EPSC Abstracts ; EPSC-DPS Joint Meeting 2019 ; https://insu.hal.science/insu-04447636 ; EPSC-DPS Joint Meeting 2019, Sep 2019, Geneva, Switzerland. pp.EPSC-DPS2019-1434-1 |
| Publisher Information: |
CCSD |
| Publication Year: |
2019 |
| Collection: |
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
| Subject Terms: |
[SDU]Sciences of the Universe [physics] |
| Subject Geographic: |
Geneva; Switzerland |
| Description: |
International audience ; The Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) onboard Mars Express (MEX) and the Shallow Radar (SHARAD) onboard Mars Reconnaissance Orbiter (MRO) suffer from severe degradation in the ground reflection signal almost every time a solar energetic particle (SEP) event strikes Mars. The most notable case occurred in September 2017, when the signals of both radars were completely absent for several days (Figure 1) [1]. The cause was likely the precipitation of SEP electrons of a few tens of keV that are believed to produce a lower ionospheric layer within the collision-dominated atmosphere which can absorb the radar signals. In this study, we go one step further and evaluate when and under which conditions this absorption layer appears and its main properties for the lifetime of both the MEX and MRO missions. |
| Document Type: |
conference object |
| Language: |
English |
| Relation: |
BIBCODE: 2019EPSC.13.1434S |
| Availability: |
https://insu.hal.science/insu-04447636; https://insu.hal.science/insu-04447636v1/document; https://insu.hal.science/insu-04447636v1/file/EPSC-DPS2019-1434-1.pdf |
| Rights: |
https://about.hal.science/hal-authorisation-v1/ ; info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.13BF40A9 |
| Database: |
BASE |