HR: 1340h
AN: SH53B-0313    [Abstracts]
TI: Comparison of Solar Energetic Particle Events and Impulsive Nitrate Increases in Greenland Ice Cores
AU: * Spence, H E
EM: spence@bu.edu
AF: Boston University Center for Space Physics, 725 Commonwealth Avenue, Boston, MA 02215 United States
AU: Kepko, L
EM: lkepko@bu.edu
AF: Boston University Center for Space Physics, 725 Commonwealth Avenue, Boston, MA 02215 United States
AU: Shea, M A
EM: sssrc@msn.com
AF: CSPAR, University of Alabama in Huntsville, Huntsville, AL 35899 United States
AU: Smart, D F
EM: sssrc@msn.com
AF: CSPAR, University of Alabama in Huntsville, Huntsville, AL 35899 United States
AB: Using nitrate measurements from Greenland ice cores we examine the correlation of nitrate spikes and solar proton events. We choose a few large space-age events for analysis, focusing particular attention on the amplitude and timing of the nitrate increase in relation to the onset and characteristics of the SEP event. A time delay between nitrate spikes and SEP onset has previously been observed to be a few weeks, which is much faster than current atmospheric downward transport theory allows. Independent confirmation or invalidation of the previous analysis of this short delay has not been attempted before.
DE: 2104 Cosmic rays
DE: 2118 Energetic particles, solar
DE: 2162 Solar cycle variations (7536)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting