Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar
Abstract In the data of the Mars Advanced Radar for Subsurface and Ionosphere Sounding on board the European Space Agency (ESA) mission Mars Express (MEX), a distinctive type of signals (called the “epsilon signature”), which is similar to that previously detected during radio sounding of the terres...
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| Format: | Article |
| Language: | English |
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Wiley
2016-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL069591 |
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| author | Zhenfei Zhang Roberto Orosei Qian Huang Jie Zhang |
| author_facet | Zhenfei Zhang Roberto Orosei Qian Huang Jie Zhang |
| author_sort | Zhenfei Zhang |
| collection | DOAJ |
| description | Abstract In the data of the Mars Advanced Radar for Subsurface and Ionosphere Sounding on board the European Space Agency (ESA) mission Mars Express (MEX), a distinctive type of signals (called the “epsilon signature”), which is similar to that previously detected during radio sounding of the terrestrial F region ionosphere, is found. The signature is interpreted to originate from multiple reflections of electromagnetic waves propagating along sounder pulse‐created, crustal magnetic field‐aligned plasma bubbles (waveguides). The signatures have a low (below 0.5%) occurrence rate and apparent cutoff frequencies 3–5 times higher than the theoretical one for an ordinary mode wave. These properties are explained by the influence of the perpendicular ionospheric plasma density gradient and the sounder pulse frequency on the formation of waveguides. |
| format | Article |
| id | doaj-art-2c94210d61844102be53a74d4bcd74f0 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-2c94210d61844102be53a74d4bcd74f02025-08-20T03:10:28ZengWileyGeophysical Research Letters0094-82761944-80072016-07-0143147381738810.1002/2016GL069591Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radarZhenfei Zhang0Roberto Orosei1Qian Huang2Jie Zhang3Institute of Mathematical Geology and Remote Sensing China University of Geosciences Wuhan ChinaIstituto di Radioastronomia Istituto Nazionale di Astrofisica, Via Piero Gobetti Bologna ItalyInstitute of Planetary Science China University of Geosciences Wuhan ChinaInstitute of Mathematical Geology and Remote Sensing China University of Geosciences Wuhan ChinaAbstract In the data of the Mars Advanced Radar for Subsurface and Ionosphere Sounding on board the European Space Agency (ESA) mission Mars Express (MEX), a distinctive type of signals (called the “epsilon signature”), which is similar to that previously detected during radio sounding of the terrestrial F region ionosphere, is found. The signature is interpreted to originate from multiple reflections of electromagnetic waves propagating along sounder pulse‐created, crustal magnetic field‐aligned plasma bubbles (waveguides). The signatures have a low (below 0.5%) occurrence rate and apparent cutoff frequencies 3–5 times higher than the theoretical one for an ordinary mode wave. These properties are explained by the influence of the perpendicular ionospheric plasma density gradient and the sounder pulse frequency on the formation of waveguides.https://doi.org/10.1002/2016GL069591MarsionosphereMARSISducted wave |
| spellingShingle | Zhenfei Zhang Roberto Orosei Qian Huang Jie Zhang Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar Geophysical Research Letters Mars ionosphere MARSIS ducted wave |
| title | Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar |
| title_full | Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar |
| title_fullStr | Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar |
| title_full_unstemmed | Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar |
| title_short | Ducted electromagnetic waves in the Martian ionosphere detected by the Mars Advanced Radar for Subsurface and Ionosphere Sounding radar |
| title_sort | ducted electromagnetic waves in the martian ionosphere detected by the mars advanced radar for subsurface and ionosphere sounding radar |
| topic | Mars ionosphere MARSIS ducted wave |
| url | https://doi.org/10.1002/2016GL069591 |
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