Diffusion analysis of the GLE (ground-level enhancement) of September 29, 1989

被引：5
|
作者：
deKoning, CA
Mathews, T
机构：
[1] Department of Physics and Astronomy, University of Calgary, Calgary, Alta. T2N 1N4
来源：
CANADIAN JOURNAL OF PHYSICS | 1996年 / 74卷 / 5-6期
关键词：
D O I：
10.1139/p96-045
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
On September 29, 1989, neutron monitors and muon telescopes around the world recorded a significant increase in their count rate. This ground-level enhancement affords a unique opportunity to study the rigidity dependence of the interplanetary scattering mean free path, lambda(parallel to). By fitting the well-known diffusion model to worldwide neutron monitor and muon telescope data, we calculate the value of lambda(parallel to) observed by each station. A plot of lambda(parallel to) observed by each station versus the mean rigidity of solar flare particles observed by each station (which ranges from 3-16 GV) clearly indicates that lambda(parallel to) is rigidity dependent. If we assume that lambda(parallel to) proportional to P-2-q for P > 3 GV, where the power-law index q is a measure of the deviation from isotropic scattering (q = 1), then we find that q = 0.86 +/- 0.03 at the time of this ground-level enhancement.
引用
收藏
页码：290 / 294
页数：5
相关论文
共 50 条
  • [41] An Interpretation of a Possible Mechanism for the First Ground-Level Enhancement of Solar Cycle 24
    Firoz, K. A.
    Gan, W. Q.
    Li, Y. P.
    Rodriguez-Pacheco, J.
    SOLAR PHYSICS, 2015, 290 (02) : 613 - 626
  • [42] An Interpretation of a Possible Mechanism for the First Ground-Level Enhancement of Solar Cycle 24
    K. A. Firoz
    W. Q. Gan
    Y. P. Li
    J. Rodríguez-Pacheco
    Solar Physics, 2015, 290 : 613 - 626
  • [43] The first ground-level enhancement of solar cycle 25 on 28 October 2021
    Papaioannou, A.
    Kouloumvakos, A.
    Mishev, A.
    Vainio, R.
    Usoskin, I.
    Herbst, K.
    Rouillard, A.P.
    Anastasiadis, A.
    Gieseler, J.
    Wimmer-Schweingruber, R.
    Kühl, P.
    Astronomy and Astrophysics, 2022, 660
  • [44] ON THE VERTICAL DIFFUSION FROM A GROUND-LEVEL SOURCE IN THE ATMOSPHERIC BOUNDARY-LAYER
    MIZUNO, T
    YOKOYAMA, O
    YASURAOKA, A
    JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN, 1982, 60 (02) : 804 - 818
  • [45] Analysis of the Ground Level Enhancement GLE 60 on 15 April 2001, and Its Space Weather Effects: Comparison With Dosimetric Measurements
    Larsen, N.
    Mishev, A. L.
    SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS, 2023, 21 (08):
  • [46] A SPACE-TIME ANALYSIS OF GROUND-LEVEL OZONE DATA
    GUTTORP, P
    MEIRING, W
    SAMPSON, PD
    ENVIRONMETRICS, 1994, 5 (03) : 241 - 254
  • [47] Monitoring ground-level air for trace analysis: methods and results
    Bieringer, J
    Schlosser, C
    ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2004, 379 (02) : 234 - 241
  • [48] Angular velocity and acceleration analysis for ground-level tracking system
    You, A. (anqingyou@163.com), 1600, Editorial Office of High Power Laser and Particle Beams, P.O. Box 919-805, Mianyang, 621900, China (25):
  • [49] Monitoring ground-level air for trace analysis: methods and results
    J. Bieringer
    C. Schlosser
    Analytical and Bioanalytical Chemistry, 2004, 379 : 234 - 241
  • [50] Radiation dose of aircrews during a solar proton event without ground-level enhancement
    Kataoka, R.
    Nakagawa, Y.
    Sato, T.
    ANNALES GEOPHYSICAE, 2015, 33 (01) : 75 - 78
12345