The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions
Abstract We examined the evolution of 34 solar wind bifurcated current sheets in the magnetosheath and their magnetospheric responses, using the in‐situ observations of the THEMIS probes and the GOES satellites. The role of foreshock ions in that process is also determined. The first current sheet e...
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Wiley
2022-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2022GL098918 |
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| author | Boyi Wang Yi Wang Terry Z. Liu Vassilis Angelopoulos |
| author_facet | Boyi Wang Yi Wang Terry Z. Liu Vassilis Angelopoulos |
| author_sort | Boyi Wang |
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| description | Abstract We examined the evolution of 34 solar wind bifurcated current sheets in the magnetosheath and their magnetospheric responses, using the in‐situ observations of the THEMIS probes and the GOES satellites. The role of foreshock ions in that process is also determined. The first current sheet event did not exhibit any modulation by foreshock ions; it generated a dynamic pressure plateau, which further evolved into a dynamic pressure plateau in the magnetosheath and likely generated mirror mode waves in the magnetosphere. The second event exhibits foreshock ions which enhanced the perturbations in the current sheet due to the disappearance and reappearance of foreshock ions controlled by the direction changes of magnetic field. That current sheet further compressed the magnetosphere and drove stronger magnetic field oscillations than the first event. Thus, solar wind current sheets can be geoeffective and their geoeffectiveness can be amplified by the foreshock ions inside their structures. |
| format | Article |
| id | doaj-art-32c29f685962430681023e36dc6e2937 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Wiley |
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| series | Geophysical Research Letters |
| spelling | doaj-art-32c29f685962430681023e36dc6e29372025-01-22T14:38:16ZengWileyGeophysical Research Letters0094-82761944-80072022-06-014912n/an/a10.1029/2022GL098918The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock IonsBoyi Wang0Yi Wang1Terry Z. Liu2Vassilis Angelopoulos3Institute of Space Science and Applied Technology Harbin Institute of Technology Shenzhen ChinaInstitute of Space Science and Applied Technology Harbin Institute of Technology Shenzhen ChinaDepartment of Earth, Planetary, and Space Sciences University of California Los Angeles CA USADepartment of Earth, Planetary, and Space Sciences University of California Los Angeles CA USAAbstract We examined the evolution of 34 solar wind bifurcated current sheets in the magnetosheath and their magnetospheric responses, using the in‐situ observations of the THEMIS probes and the GOES satellites. The role of foreshock ions in that process is also determined. The first current sheet event did not exhibit any modulation by foreshock ions; it generated a dynamic pressure plateau, which further evolved into a dynamic pressure plateau in the magnetosheath and likely generated mirror mode waves in the magnetosphere. The second event exhibits foreshock ions which enhanced the perturbations in the current sheet due to the disappearance and reappearance of foreshock ions controlled by the direction changes of magnetic field. That current sheet further compressed the magnetosphere and drove stronger magnetic field oscillations than the first event. Thus, solar wind current sheets can be geoeffective and their geoeffectiveness can be amplified by the foreshock ions inside their structures.https://doi.org/10.1029/2022GL098918current sheetforeshockmagnetosheathmagnetospheregeoeffectiveness |
| spellingShingle | Boyi Wang Yi Wang Terry Z. Liu Vassilis Angelopoulos The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions Geophysical Research Letters current sheet foreshock magnetosheath magnetosphere geoeffectiveness |
| title | The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions |
| title_full | The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions |
| title_fullStr | The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions |
| title_full_unstemmed | The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions |
| title_short | The Geoeffectiveness of Solar Wind Current Sheets and Its Modulation by Foreshock Ions |
| title_sort | geoeffectiveness of solar wind current sheets and its modulation by foreshock ions |
| topic | current sheet foreshock magnetosheath magnetosphere geoeffectiveness |
| url | https://doi.org/10.1029/2022GL098918 |
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