Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations
We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of...
Ausführliche Beschreibung
Autor*in: |
Jae-Hun Kim [verfasserIn] Kyung-Chan Kim [verfasserIn] Dae-Young Lee [verfasserIn] Hee-Jeong Kim [verfasserIn] |
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E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2006 |
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Übergeordnetes Werk: |
In: Journal of Astronomy and Space Sciences - Korean Space Science Society (KSSS), 2012, 23(2006), 3, Seite 217-226 |
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Übergeordnetes Werk: |
volume:23 ; year:2006 ; number:3 ; pages:217-226 |
Links: |
Link aufrufen |
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DOI / URN: |
10.5140/JASS.2006.23.3.217 |
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Katalog-ID: |
DOAJ023910690 |
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10.5140/JASS.2006.23.3.217 doi (DE-627)DOAJ023910690 (DE-599)DOAJ2c4e146556f54f38931bf4be4117e603 DE-627 ger DE-627 rakwb eng QB1-991 Jae-Hun Kim verfasserin aut Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. sawtooth oscillation outer boundary outer radiation belt L value Astronomy Kyung-Chan Kim verfasserin aut Dae-Young Lee verfasserin aut Hee-Jeong Kim verfasserin aut In Journal of Astronomy and Space Sciences Korean Space Science Society (KSSS), 2012 23(2006), 3, Seite 217-226 (DE-627)62761471X (DE-600)2557343-3 20931409 nnns volume:23 year:2006 number:3 pages:217-226 https://doi.org/10.5140/JASS.2006.23.3.217 kostenfrei https://doaj.org/article/2c4e146556f54f38931bf4be4117e603 kostenfrei http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n3/OJOOBS_2006_v23n3_217.pdf kostenfrei https://doaj.org/toc/2093-5587 Journal toc kostenfrei https://doaj.org/toc/2093-1409 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 23 2006 3 217-226 |
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10.5140/JASS.2006.23.3.217 doi (DE-627)DOAJ023910690 (DE-599)DOAJ2c4e146556f54f38931bf4be4117e603 DE-627 ger DE-627 rakwb eng QB1-991 Jae-Hun Kim verfasserin aut Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. sawtooth oscillation outer boundary outer radiation belt L value Astronomy Kyung-Chan Kim verfasserin aut Dae-Young Lee verfasserin aut Hee-Jeong Kim verfasserin aut In Journal of Astronomy and Space Sciences Korean Space Science Society (KSSS), 2012 23(2006), 3, Seite 217-226 (DE-627)62761471X (DE-600)2557343-3 20931409 nnns volume:23 year:2006 number:3 pages:217-226 https://doi.org/10.5140/JASS.2006.23.3.217 kostenfrei https://doaj.org/article/2c4e146556f54f38931bf4be4117e603 kostenfrei http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n3/OJOOBS_2006_v23n3_217.pdf kostenfrei https://doaj.org/toc/2093-5587 Journal toc kostenfrei https://doaj.org/toc/2093-1409 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 23 2006 3 217-226 |
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10.5140/JASS.2006.23.3.217 doi (DE-627)DOAJ023910690 (DE-599)DOAJ2c4e146556f54f38931bf4be4117e603 DE-627 ger DE-627 rakwb eng QB1-991 Jae-Hun Kim verfasserin aut Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. sawtooth oscillation outer boundary outer radiation belt L value Astronomy Kyung-Chan Kim verfasserin aut Dae-Young Lee verfasserin aut Hee-Jeong Kim verfasserin aut In Journal of Astronomy and Space Sciences Korean Space Science Society (KSSS), 2012 23(2006), 3, Seite 217-226 (DE-627)62761471X (DE-600)2557343-3 20931409 nnns volume:23 year:2006 number:3 pages:217-226 https://doi.org/10.5140/JASS.2006.23.3.217 kostenfrei https://doaj.org/article/2c4e146556f54f38931bf4be4117e603 kostenfrei http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n3/OJOOBS_2006_v23n3_217.pdf kostenfrei https://doaj.org/toc/2093-5587 Journal toc kostenfrei https://doaj.org/toc/2093-1409 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 23 2006 3 217-226 |
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10.5140/JASS.2006.23.3.217 doi (DE-627)DOAJ023910690 (DE-599)DOAJ2c4e146556f54f38931bf4be4117e603 DE-627 ger DE-627 rakwb eng QB1-991 Jae-Hun Kim verfasserin aut Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. sawtooth oscillation outer boundary outer radiation belt L value Astronomy Kyung-Chan Kim verfasserin aut Dae-Young Lee verfasserin aut Hee-Jeong Kim verfasserin aut In Journal of Astronomy and Space Sciences Korean Space Science Society (KSSS), 2012 23(2006), 3, Seite 217-226 (DE-627)62761471X (DE-600)2557343-3 20931409 nnns volume:23 year:2006 number:3 pages:217-226 https://doi.org/10.5140/JASS.2006.23.3.217 kostenfrei https://doaj.org/article/2c4e146556f54f38931bf4be4117e603 kostenfrei http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n3/OJOOBS_2006_v23n3_217.pdf kostenfrei https://doaj.org/toc/2093-5587 Journal toc kostenfrei https://doaj.org/toc/2093-1409 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 23 2006 3 217-226 |
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10.5140/JASS.2006.23.3.217 doi (DE-627)DOAJ023910690 (DE-599)DOAJ2c4e146556f54f38931bf4be4117e603 DE-627 ger DE-627 rakwb eng QB1-991 Jae-Hun Kim verfasserin aut Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations 2006 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. sawtooth oscillation outer boundary outer radiation belt L value Astronomy Kyung-Chan Kim verfasserin aut Dae-Young Lee verfasserin aut Hee-Jeong Kim verfasserin aut In Journal of Astronomy and Space Sciences Korean Space Science Society (KSSS), 2012 23(2006), 3, Seite 217-226 (DE-627)62761471X (DE-600)2557343-3 20931409 nnns volume:23 year:2006 number:3 pages:217-226 https://doi.org/10.5140/JASS.2006.23.3.217 kostenfrei https://doaj.org/article/2c4e146556f54f38931bf4be4117e603 kostenfrei http://ocean.kisti.re.kr/downfile/volume/kosss/OJOOBS/2006/v23n3/OJOOBS_2006_v23n3_217.pdf kostenfrei https://doaj.org/toc/2093-5587 Journal toc kostenfrei https://doaj.org/toc/2093-1409 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2014 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 23 2006 3 217-226 |
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Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations |
abstract |
We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. |
abstractGer |
We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. |
abstract_unstemmed |
We report three sawtooth oscillation events observed at geosynchronous orbit where we find quasi-periodic (every 2-3 hours) sudden flux increases followed by slow flux decreases at the energy levels of ˜50-400 keV. For these three sawtooth events, we have examined variations of the outer boundary of the outer radiation belt. In order to determine L values of the outer boundary, we have used data of relativistic electron flux observed by the SAMPEX satellite. We find that the outer boundary of the outer radiation belt oscillates periodically being consistent with sawtooth oscillation phases. Specifically, the outer boundary of the outer radiation belt expands (namely, the boundary L value increases) following the sawtooth particle flux enhancement of each tooth, and then contracts (namely, the boundary L value decreases) while the sawtooth flux decreases gradually until the next flux enhancement. On the other hand, it is repeatedly seen that the asymmetry of the magnetic field intensity between dayside and nightside decreases (increases) due to the dipolarization (the stretching) on the nightside as the sawtooth flux increases (decreases). This implies that the periodic magnetic field variations during the sawtooth oscillations are likely responsible for the expansion-contraction oscillations of the outer boundary of the outer radiation belt. |
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Oscillations of the Outer Boundary of the Outer Radiation Belt During Sawtooth Oscillations |
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