scholarly journals Stochastic growth theory of spatially-averaged distributions of Langmuir Fields in Earth's foreshock

2001 ◽  
Vol 28 (18) ◽  
pp. 3569-3572 ◽  
Author(s):  
Christopher R. Boshuizen ◽  
Iver H. Cairns ◽  
P. A. Robinson
Keyword(s):  
Growth Theory ◽  
Stochastic Growth

scholarly journals Statistics of auroral Langmuir waves

2008 ◽  
Vol 26 (12) ◽  
pp. 3885-3895 ◽  
Author(s):  
M. Samara ◽  
J. LaBelle ◽  
I. H. Cairns
Keyword(s):  
Electric Field ◽  
High Frequency ◽  
Large Range ◽  
Auroral Zone ◽  
Sounding Rocket ◽  
Growth Theory ◽  
Langmuir Waves ◽  
Stochastic Growth ◽  
Gaussian Form ◽  
Frequency Wave

Abstract. The Physics of Auroral Zone Electrons II (PHAZE II) sounding rocket was launched in February 1997 into active pre-midnight aurora. The resulting high frequency wave data are dominated by Langmuir waves. Consistent with many previous observations the Langmuir waves are sporadic, occurring in bursts lasting up to a few hundred ms. We compute statistics of the electric field amplitudes of these Langmuir waves, with two results. First, the shape of the distribution of running averages of the electric field amplitudes remains approximately stationary for a large range of widths of running average less than ~0.3 ms and for a large range of widths exceeding about 1 ms. The interpretation of this transition timescale is unclear but appears unlikely to be of instrumental origin. Second, for 2.6-ms running averages, corresponding to the latter range, the distribution of the logarithm of electric field amplitudes matches a Gaussian form very well for all nine cases studied in detail, hence the statistics are lognormal. These distributions are consistent with stochastic growth theory (SGT).

False Contagion and False Covergence Clubs in Stochastic Growth Theory

2003 ◽  
Author(s):  
Stephen Anthony de Castro ◽  
Flávio de Oliveira Gonçalves
Keyword(s):  
Growth Theory ◽  
Stochastic Growth

scholarly journals First test of stochastic growth theory for Langmuir waves in Earth's foreshock

1997 ◽  
Vol 24 (4) ◽  
pp. 369-372 ◽  
Author(s):  
Iver H. Cairns ◽  
P. A. Robinson
Keyword(s):  
Growth Theory ◽  
Langmuir Waves ◽  
Stochastic Growth
Sign in / Sign up

Export Citation Format

Share Document