Accession Number : AD1045883


Title :   Estimating Solar Proton Flux at LEO From a Geomagnetic Cutoff Model


Descriptive Note : Technical Report,07 Oct 2013,14 Jul 2015


Corporate Author : Air Force Research Laboratory, Space Vehicles Directorate Kirtland AFB United States


Personal Author(s) : Selesnick,Richard S ; Young,S ; Winter,L


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1045883.pdf


Report Date : 14 Jul 2015


Pagination or Media Count : 24


Abstract : This report describes a method for predicting proton flux in low earth orbit (LEO) during a solar proton event (SPE). In particular, integral fluxes of 5 and 30 MeV protons are required, though it can be applied equally to other energy ranges. The method depends on a geomagnetic cutoff model, proton measurements from a geosynchronous (GEO) GOES satellite, and the geomagnetic Kp index. Its limitations and statistical accuracy are also described. The recommended cutoff model is empirical. Its results are also compared to the theoretical model of Smart and Shea.


Descriptors :   predictive modeling , low earth orbits , GEOMAGNETISM


Subject Categories : Geomagnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE