Long-term variations of the electron slot region and global radiation belt structure
| dc.contributor.author | Fung, Shing F. | |
| dc.contributor.author | Shao, Xi | |
| dc.contributor.author | Tan, Lun C. | |
| dc.date.accessioned | 2021-07-29T19:13:23Z | |
| dc.date.available | 2021-07-29T19:13:23Z | |
| dc.date.issued | 2006-02-22 | |
| dc.description.abstract | We report the observations of changes of the nominal position of the quiet-time radiation belt slot over the solar cycles. It has been found that the slot region, believed to be a result of enhanced precipitation losses of energetic electrons due to their interactions with VLF waves in the magnetosphere, tends to shift to higher L (∼3) during a solar maximum compared to its canonical L value of ∼2.5, which is more typical of a solar minimum. The solar-cycle migration of the slot can be understood in terms of the solar-cycle changes in ionospheric densities, which may cause the optimal wave-particle interaction region during higher solar activity periods to move to higher altitudes and higher latitudes, thus higher L. Our analysis also suggests that the primary regions of wave-particle interaction processes that result in the slot formation are located off of the magnetic equator. | en_US |
| dc.description.sponsorship | Discussions with J. L. Green (GSFC) are gratefully acknowledged. We thank the NOAA National Geophysical Data Center (NGDC) for providing the NOAA data sets. This work was partially supported by NASA contract NAS 5 -97057 (LCT) and the Na tional Research Council Research Associate Program (XS). | en_US |
| dc.description.uri | https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2005GL024891 | en_US |
| dc.format.extent | 4 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2dgil-k7i5 | |
| dc.identifier.citation | Fung, Shing F.; Shao, Xi; Tan, Lun C.; Long-term variations of the electron slot region and global radiation belt structure; Geophysical Research Letters, 33, 4, 22 February, 2006; https://doi.org/10.1029/2005GL024891 | en_US |
| dc.identifier.uri | https://doi.org/10.1029/2005GL024891 | |
| dc.identifier.uri | http://hdl.handle.net/11603/22219 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | American Geophysical Union | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Goddard Planetary Heliophysics Institute (GPHI) | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Long-term variations of the electron slot region and global radiation belt structure | en_US |
| dc.type | Text | en_US |