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Tracking Magnetopause Motion Using Cold Plasmaspheric Ions.

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Title: Tracking Magnetopause Motion Using Cold Plasmaspheric Ions.
Authors: LLera, K.1 (AUTHOR) kristie.llera@swri.org, Fuselier, S. A.1,2 (AUTHOR), Petrinec, S. M.3 (AUTHOR), Rice, R. C.4,5 (AUTHOR), Burch, J. L.1 (AUTHOR), Giles, B.5 (AUTHOR), Trattner, K. J.6 (AUTHOR), Strangeway, R. J.7 (AUTHOR)
Source: Journal of Geophysical Research. Space Physics. Nov2023, Vol. 128 Issue 11, p1-14. 14p.
Subject Terms: Magnetopause, Ion migration & velocity, Motion capture (Human mechanics), Space environment, Particle tracks (Nuclear physics)
Abstract: We demonstrate that any plasmaspheric/cold ions accelerated in the vicinity of the magnetopause boundary, can proxy the local magnetopause motion over many minutes. The timeseries of this motion capture local structures such as waves on the boundary. We determine cold ion velocities normal to full magnetopause boundary crossings for three events with varying distances to the predicted reconnection X‐line, thus, providing a proof‐of‐concept study demonstrating the potential for using cold ion velocities to track magnetopause motion over a long period of time. Obtaining the time history of the (local) motion of the magnetopause relative to the spacecraft is determined by integrating the bulk (<100 eV for H+) ion velocities normal to the boundary. Timeseries of these tracked cold ion accelerations may be used to investigate boundary layer thicknesses, potential wave structures on the magnetopause, and their evolution beyond the boundary crossing. This method generally tracks magnetopause motion out to distances of ∼1–2RE away from the spacecraft during quasi‐steady space weather conditions. Key Points: Energized plasmaspheric cold ions effectively track the magnetopause motion continuously over many minutesThe magnetopause location and velocity are tracked reliably out to distances of ∼1–2 RE from the spacecraft given fairly consistent cold ion detectabilityOne of the 3 events shows quasi‐periodic magnetopause motion suggesting that this technique reveals wave propagation along the boundary [ABSTRACT FROM AUTHOR]
Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Tracking Magnetopause Motion Using Cold Plasmaspheric Ions.
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22LLera%2C+K%2E%22&quot;&gt;LLera, K.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;i&gt; kristie.llera@swri.org&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Fuselier%2C+S%2E+A%2E%22&quot;&gt;Fuselier, S. A.&lt;/searchLink&gt;&lt;relatesTo&gt;1,2&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Petrinec%2C+S%2E+M%2E%22&quot;&gt;Petrinec, S. M.&lt;/searchLink&gt;&lt;relatesTo&gt;3&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Rice%2C+R%2E+C%2E%22&quot;&gt;Rice, R. C.&lt;/searchLink&gt;&lt;relatesTo&gt;4,5&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Burch%2C+J%2E+L%2E%22&quot;&gt;Burch, J. L.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Giles%2C+B%2E%22&quot;&gt;Giles, B.&lt;/searchLink&gt;&lt;relatesTo&gt;5&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Trattner%2C+K%2E+J%2E%22&quot;&gt;Trattner, K. J.&lt;/searchLink&gt;&lt;relatesTo&gt;6&lt;/relatesTo&gt; (AUTHOR)&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Strangeway%2C+R%2E+J%2E%22&quot;&gt;Strangeway, R. J.&lt;/searchLink&gt;&lt;relatesTo&gt;7&lt;/relatesTo&gt; (AUTHOR)
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: We demonstrate that any plasmaspheric/cold ions accelerated in the vicinity of the magnetopause boundary, can proxy the local magnetopause motion over many minutes. The timeseries of this motion capture local structures such as waves on the boundary. We determine cold ion velocities normal to full magnetopause boundary crossings for three events with varying distances to the predicted reconnection X‐line, thus, providing a proof‐of‐concept study demonstrating the potential for using cold ion velocities to track magnetopause motion over a long period of time. Obtaining the time history of the (local) motion of the magnetopause relative to the spacecraft is determined by integrating the bulk (&lt;100 eV for H+) ion velocities normal to the boundary. Timeseries of these tracked cold ion accelerations may be used to investigate boundary layer thicknesses, potential wave structures on the magnetopause, and their evolution beyond the boundary crossing. This method generally tracks magnetopause motion out to distances of ∼1–2RE away from the spacecraft during quasi‐steady space weather conditions. Key Points: Energized plasmaspheric cold ions effectively track the magnetopause motion continuously over many minutesThe magnetopause location and velocity are tracked reliably out to distances of ∼1–2 RE from the spacecraft given fairly consistent cold ion detectabilityOne of the 3 events shows quasi‐periodic magnetopause motion suggesting that this technique reveals wave propagation along the boundary [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: &lt;i&gt;Copyright of Journal of Geophysical Research. Space Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1029/2023JA031338
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 14
        StartPage: 1
    Subjects:
      – SubjectFull: Magnetopause
        Type: general
      – SubjectFull: Ion migration & velocity
        Type: general
      – SubjectFull: Motion capture (Human mechanics)
        Type: general
      – SubjectFull: Space environment
        Type: general
      – SubjectFull: Particle tracks (Nuclear physics)
        Type: general
    Titles:
      – TitleFull: Tracking Magnetopause Motion Using Cold Plasmaspheric Ions.
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            NameFull: LLera, K.
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            NameFull: Fuselier, S. A.
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            NameFull: Petrinec, S. M.
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            NameFull: Rice, R. C.
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            NameFull: Burch, J. L.
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            NameFull: Giles, B.
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              M: 11
              Text: Nov2023
              Type: published
              Y: 2023
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