Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause
[1] For the large geomagnetic disturbance on April 11, 2001, we combine data from the Millstone Hill radar, a network of GPS TEC receivers, and the DMSP F‐12 and IMAGE satellites, to estimate the sunward flux of thermal plasma associated with erosion of the outer plasmasphere/ionosphere in the dusk...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en_US |
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American Geophysical Union (AGU)
2018
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| Online Access: | http://hdl.handle.net/1721.1/114699 |
| _version_ | 1811090463774474240 |
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| author | Rich, F. J. Sandel, B. R. Foster, John C Coster, Anthea J Erickson, Philip J |
| author2 | Haystack Observatory |
| author_facet | Haystack Observatory Rich, F. J. Sandel, B. R. Foster, John C Coster, Anthea J Erickson, Philip J |
| author_sort | Rich, F. J. |
| collection | MIT |
| description | [1] For the large geomagnetic disturbance on April 11, 2001, we combine data from the Millstone Hill radar, a network of GPS TEC receivers, and the DMSP F‐12 and IMAGE satellites, to estimate the sunward flux of thermal plasma associated with erosion of the outer plasmasphere/ionosphere in the dusk sector. Direct radar observations of the E×B advection of SED plasma determine a flux of >10E26 ions/s to the noontime cusp at F‐region heights. DMSP in situ observations provide a similar estimate. Assuming a dipolar magnetic field, we project our low‐altitude observations into the outer plasmasphere, obtaining a total sunward flux of >10E27 ions/s. High‐altitude IMAGE EUV observations of the plasmasphere drainage plume provides an estimate of 1.5 × 10E27 ions/s for the sunward flux. Such rates of sunward plasma transport are sufficient to deplete a 1‐Re shell of the outer plasmasphere in ∼1 hour. |
| first_indexed | 2024-09-23T14:46:34Z |
| format | Article |
| id | mit-1721.1/114699 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:46:34Z |
| publishDate | 2018 |
| publisher | American Geophysical Union (AGU) |
| record_format | dspace |
| spelling | mit-1721.1/1146992022-09-29T10:28:25Z Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause Rich, F. J. Sandel, B. R. Foster, John C Coster, Anthea J Erickson, Philip J Haystack Observatory Foster, John C Foster, John C Coster, Anthea J Erickson, Philip J [1] For the large geomagnetic disturbance on April 11, 2001, we combine data from the Millstone Hill radar, a network of GPS TEC receivers, and the DMSP F‐12 and IMAGE satellites, to estimate the sunward flux of thermal plasma associated with erosion of the outer plasmasphere/ionosphere in the dusk sector. Direct radar observations of the E×B advection of SED plasma determine a flux of >10E26 ions/s to the noontime cusp at F‐region heights. DMSP in situ observations provide a similar estimate. Assuming a dipolar magnetic field, we project our low‐altitude observations into the outer plasmasphere, obtaining a total sunward flux of >10E27 ions/s. High‐altitude IMAGE EUV observations of the plasmasphere drainage plume provides an estimate of 1.5 × 10E27 ions/s for the sunward flux. Such rates of sunward plasma transport are sufficient to deplete a 1‐Re shell of the outer plasmasphere in ∼1 hour. United States. National Aeronautics and Space Administration (Award NAG5-12875) 2018-04-13T15:12:44Z 2018-04-13T15:12:44Z 2004-04 2004-03 Article http://purl.org/eprint/type/JournalArticle 0094-8276 http://hdl.handle.net/1721.1/114699 Foster, J. C. “Stormtime Observations of the Flux of Plasmaspheric Ions to the Dayside Cusp/magnetopause.” Geophysical Research Letters 31, 8 (2004): L08809 © 2004 American Geophysical Union en_US http://dx.doi.org/10.1029/2004GL020082 Geophysical Research Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Geophysical Union (AGU) John C. Foster |
| spellingShingle | Rich, F. J. Sandel, B. R. Foster, John C Coster, Anthea J Erickson, Philip J Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause |
| title | Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause |
| title_full | Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause |
| title_fullStr | Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause |
| title_full_unstemmed | Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause |
| title_short | Stormtime observations of the flux of plasmaspheric ions to the dayside cusp/magnetopause |
| title_sort | stormtime observations of the flux of plasmaspheric ions to the dayside cusp magnetopause |
| url | http://hdl.handle.net/1721.1/114699 |
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