Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere
Global dust storms at Mars have a significant impact on the atmosphere and ionosphere, but only recently has their impact on the magnetosphere been investigated. The 2018 global dust storm at Mars was the first global event following the arrival of the Mars Atmosphere and Volatile EvolutioN mission...
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| Format: | Article |
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IOP Publishing
2025-01-01
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| Series: | The Planetary Science Journal |
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| Online Access: | https://doi.org/10.3847/PSJ/add2f8 |
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| author | Catherine E. Regan Andrew J. Coates Mark Lester Anne Wellbrock Geraint H. Jones Beatriz Sánchez-Cano Philippe Garnier Louisa J. Preston František Němec Václav Linzmayer Rudy A. Frahm Mats Holmström |
| author_facet | Catherine E. Regan Andrew J. Coates Mark Lester Anne Wellbrock Geraint H. Jones Beatriz Sánchez-Cano Philippe Garnier Louisa J. Preston František Němec Václav Linzmayer Rudy A. Frahm Mats Holmström |
| author_sort | Catherine E. Regan |
| collection | DOAJ |
| description | Global dust storms at Mars have a significant impact on the atmosphere and ionosphere, but only recently has their impact on the magnetosphere been investigated. The 2018 global dust storm at Mars was the first global event following the arrival of the Mars Atmosphere and Volatile EvolutioN mission at Mars, providing additional data to that of Mars Express observing how plasma boundaries (the bow shock and induced magnetospheric boundary (IMB)) varied over the storm duration. Applying 2D boundary models to spacecraft crossings, we find that the variability of both boundaries increases due to the storm onset and continues after surface conditions have returned to normal. While the bow shock shows no influence from the crustal magnetic fields in the southern hemisphere of Mars, the IMB dips here, the opposite of its normal bulging behavior. This is consistent with the signature found during the 2007 global dust storm. We suggest this signature is due to a decrease in ionospheric pressure in this area from the transport of ionized particles down crustal magnetic field lines toward the surface of Mars. |
| format | Article |
| id | doaj-art-2e4727eb3dc44aaca163a8704b70d2a9 |
| institution | Kabale University |
| issn | 2632-3338 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj-art-2e4727eb3dc44aaca163a8704b70d2a92025-08-20T03:47:33ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-016511710.3847/PSJ/add2f8Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced MagnetosphereCatherine E. Regan0https://orcid.org/0000-0001-8784-5919Andrew J. Coates1https://orcid.org/0000-0002-6185-3125Mark Lester2Anne Wellbrock3https://orcid.org/0000-0002-2861-7999Geraint H. Jones4https://orcid.org/0000-0002-5859-1136Beatriz Sánchez-Cano5https://orcid.org/0000-0003-0277-3253Philippe Garnier6Louisa J. Preston7František Němec8https://orcid.org/0000-0002-3233-2718Václav Linzmayer9Rudy A. Frahm10Mats Holmström11https://orcid.org/0000-0001-5494-5374Mullard Space Science Laboratory, Department of Space and Climate Physics, University College London , UK ; catherine.regan@mail.wvu.edu; Centre for Planetary Sciences at UCL and Birkbeck , London, UK; Department of Physics and Astronomy, West Virginia University , WV, USAMullard Space Science Laboratory, Department of Space and Climate Physics, University College London , UK ; catherine.regan@mail.wvu.edu; Centre for Planetary Sciences at UCL and Birkbeck , London, UKSchool of Physics and Astronomy, University of Leicester , UKMullard Space Science Laboratory, Department of Space and Climate Physics, University College London , UK ; catherine.regan@mail.wvu.edu; Centre for Planetary Sciences at UCL and Birkbeck , London, UKMullard Space Science Laboratory, Department of Space and Climate Physics, University College London , UK ; catherine.regan@mail.wvu.edu; Centre for Planetary Sciences at UCL and Birkbeck , London, UKSchool of Physics and Astronomy, University of Leicester , UKIRAP , Toulouse, FranceMullard Space Science Laboratory, Department of Space and Climate Physics, University College London , UK ; catherine.regan@mail.wvu.edu; Centre for Planetary Sciences at UCL and Birkbeck , London, UKFaculty of Mathematics and Physics, Charles University , Czech RepublicFaculty of Mathematics and Physics, Charles University , Czech RepublicSouthwest Research Institute , TX, USASwedish Institute of Space Physics , Kiruna, SwedenGlobal dust storms at Mars have a significant impact on the atmosphere and ionosphere, but only recently has their impact on the magnetosphere been investigated. The 2018 global dust storm at Mars was the first global event following the arrival of the Mars Atmosphere and Volatile EvolutioN mission at Mars, providing additional data to that of Mars Express observing how plasma boundaries (the bow shock and induced magnetospheric boundary (IMB)) varied over the storm duration. Applying 2D boundary models to spacecraft crossings, we find that the variability of both boundaries increases due to the storm onset and continues after surface conditions have returned to normal. While the bow shock shows no influence from the crustal magnetic fields in the southern hemisphere of Mars, the IMB dips here, the opposite of its normal bulging behavior. This is consistent with the signature found during the 2007 global dust storm. We suggest this signature is due to a decrease in ionospheric pressure in this area from the transport of ionized particles down crustal magnetic field lines toward the surface of Mars.https://doi.org/10.3847/PSJ/add2f8MarsPlanetary magnetospheres |
| spellingShingle | Catherine E. Regan Andrew J. Coates Mark Lester Anne Wellbrock Geraint H. Jones Beatriz Sánchez-Cano Philippe Garnier Louisa J. Preston František Němec Václav Linzmayer Rudy A. Frahm Mats Holmström Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere The Planetary Science Journal Mars Planetary magnetospheres |
| title | Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere |
| title_full | Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere |
| title_fullStr | Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere |
| title_full_unstemmed | Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere |
| title_short | Effects of the 2018 Martian Global Dust Storm on Boundary Positions in the Induced Magnetosphere |
| title_sort | effects of the 2018 martian global dust storm on boundary positions in the induced magnetosphere |
| topic | Mars Planetary magnetospheres |
| url | https://doi.org/10.3847/PSJ/add2f8 |
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