期刊
ADVANCES IN SPACE RESEARCH
卷 51, 期 9, 页码 1692-1700出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.asr.2012.11.030
关键词
Space weather; South American Magnetic Anomaly (SAMA); D-region; Cosmic noise absorption; Energetic particles precipitation; South American Riometer Network (SARINET)
类别
资金
- CNPq/MCT [130497/2009-6, 305242/2011-3]
- CNPq/PRO-ANTAR [0520186/06-0]
- IN-CT\ APA (CNPq) [574018/2008-5]
The cosmic noise absorption is presented in terms of two-dimensional images obtained from the imaging riometers operated at the Southern Space Observatory (geographic coordinate: 29.4 degrees S, 53.1 degrees W), in Sao Martinho da Serra, Brazil, Concepcion (geographic coordinate: 36.5 degrees S, 73.0 degrees W) and Punta Arenas (geographic coordinate: 53.00 degrees S, 70.5 degrees W) in Chile, which belong to the South American Riometer Network and are located at the central and periphery regions of the South American Magnetic Anomaly. Correlations are performed between the maximum cosmic noise absorption observed at these stations and the energetic electron flux in two energy channels (>30 and >300 keV) and the proton flux in three energy channels (80-240, 800-2500 and >6900 keV) as measured by the Medium Energy Proton and Electron Detector, during a moderate geomagnetic storm that occurred on September 3, 2008. The results show high correlations between the cosmic noise absorption detected at Sao Martinho da Serra and the flux of protons with energy between 80 and 240 keV, and the flux of electrons with energies higher than 300 keV, while an additional ionization at Concepcion was correlated with electrons of energies higher than 30 keV. The cosmic noise absorption detected at Punta Arenas was probably caused by the increase of the protons flux with energy between 80 and 240 keV. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据