Long-term and transient time variation of cosmic ray fluxes detected in Argentina by CARPET cosmic ray detector

被引：23
|
作者：
De Mendonca, R. R. S. [1 ,2 ]
Raulin, J. -P. [2 ]
Bertoni, F. C. P. [2 ]
Echer, E. [1 ]
Makhmutov, V. S. [3 ]
Fernandez, G. [4 ]
机构：
[1] INPE, Natl Inst Space Res, BR-12227010 Sao Jose Dos Campos, SP, Brazil
[2] Univ Presbiteriana Mackenzie, CRAAM, EE, Sao Paulo, Brazil
[3] LPI, Moscow, Russia
[4] El Leoncito Astron Complex CASLEO, San Juan, Argentina
来源：
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2011年 / 73卷 / 11-12期
基金：
巴西圣保罗研究基金会;
关键词：
Cosmic rays; Solar activity; Geomagnetic activity; Atmospheric phenomena;
D O I：
10.1016/j.jastp.2010.09.034
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
We present results obtained at El Leoncito (CASLEO, San Juan, Argentina) with the CARPET charged particles detector installed in April 2006. The observed modulation of the cosmic ray flux is discussed as a function of its time variability and it is related to longer solar activity variations and to shorter variations during solar and geomagnetic transient activity. Short period (few minutes, few hours) cosmic ray modulation events are observed during rain time (precipitation) and significant variations of the atmospheric electric field. Complementary observations of the atmospheric electric field indicate that its time variations play an important role in the detected cosmic ray event. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1410 / 1416
页数：7
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