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Drift shell tracing and secular variation of inner zone high energy proton environment in the SAA

dc.contributor.authorPu, Z.Y.
dc.contributor.authorXie, L.
dc.contributor.authorJiao, W.X.
dc.contributor.authorFu, S.Y.
dc.contributor.authorFang, X.H.
dc.contributor.authorZong, Q.G.
dc.contributor.authorHeynderickx, D.
dc.date2005
dc.date.accessioned2016-12-07T10:36:05Z
dc.date.available2016-12-07T10:36:05Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/4593
dc.descriptionTo investigate long-term variations of the inner zone high-energy proton environment at low orbits, we developed the drift shell tracing (DST) approach by using the adiabatic approximation of charged particle motion with the NASA standard radiation models as reference states. The DST results show that over the past three decades fluxes of high-energy protons at altitudes ∼ 1000 km in the South Atlantic Anomaly (SAA) noticeably increased and the centre region of the proton SAA apparently moved westward and expanded. Calculations of the L-averaged lifetime of high-energy protons indicate that the DST approach provides a reasonable means for estimation of the secular variation of the inner zone proton environment.
dc.languageeng
dc.titleDrift shell tracing and secular variation of inner zone high energy proton environment in the SAA
dc.typeArticle
dc.subject.frascatiPhysical sciences
dc.audienceScientific
dc.subject.freeMathematical models
dc.subject.freeOrbits
dc.subject.freeRadiation belts
dc.subject.freeDrift shell
dc.subject.freeInner radiation belt
dc.subject.freeSAA
dc.subject.freeSecular variation of radiation belt
dc.subject.freeProtons
dc.source.titleAdvances in Space Research
dc.source.volume36
dc.source.issue10
dc.source.page1973-1978
Orfeo.peerreviewedYes
dc.identifier.doi10.1016/j.asr.2004.09.018
dc.identifier.scopus2-s2.0-27844508584


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