scholarly journals Local intermittency measure analysis of neutron monitor data

2021 ◽  
pp. 131-135
Author(s):  
Alexander MacKinnon ◽  
Sam Rennie
Keyword(s):  
Time Series ◽  
Wavelet Analysis ◽  
Neutron Monitor ◽  
Forbush Decrease ◽  
Automated Detection ◽  
Time Period ◽  
Measure Analysis ◽  
Neutron Monitor Data ◽  
Monitor Data

Local Intermittency Measure (LIM) is a development of wavelet analysis particularly suited to the diagnosis of isolated, intermittent events in time series. We construct LIM scalograms of Neutron Monitor (NM) data for an example each of a large GLE and a Forbush decrease. Both kinds of event show distinctive LIM signatures. In the case of the Forbush decrease the method also identifies a second, much smaller event that took place in the same time period. LIM may thus be a useful tool for automated or semi-automated detection of such events in NM data.

Rigidity Dependence of Forbush Decreases

1992 ◽  
Vol 10 (1) ◽  
pp. 24-26 ◽  
Author(s):  
M. L. Duldig ◽  
J. E. Humble
Keyword(s):  
Energy Range ◽  
Neutron Monitor ◽  
Forbush Decrease ◽  
Forbush Decreases ◽  
Neutron Monitor Data ◽  
Monitor Data ◽  
Rigidity Dependence

AbstractIna recent paper, Lockwood et al. (1991) have used IMP spacecraft and Neutron Monitor data to consider the rigidity dependence of three large Forbush Decreases over the energy range 50 MeV to 30 GeV. Some of their conclusions are extrapolated to higher energies. In an earlier paper (Duldig, 1987a), one of us discussed the need to consider the presence of isotropic intensity waves when determining the Forbush Decrease spectrum at energies up to a few hundred GeV. Lockwood et al.’s conclusions are discussed in the light of these results.

scholarly journals Multitaper spectral analysis of cosmic rays São Martinho da Serra's muon telescope and Newark's neutron monitor data

2007 ◽  
Vol 25 ◽  
pp. 163-167 ◽  
Author(s):  
Marlos Rockenbach da Silva ◽  
Walter Demetrio Gonzalez Alarcon ◽  
Ezequiel Echer ◽  
Alisson Dal Lago ◽  
Luis Eduardo Antunes Vieira ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Cosmic Rays ◽  
Neutron Monitor ◽  
Muon Telescope ◽  
Neutron Monitor Data ◽  
Monitor Data

scholarly journals Method of automatic correction of neutron monitor data for precipitation in the form of snow in real time

2021 ◽  
Vol 7 (3) ◽  
pp. 120-126
Author(s):  
Valery Yanchukovsky ◽  
Vasiliy Kuz'menko
Keyword(s):  
Snow Cover ◽  
Real Time ◽  
Neutron Monitor ◽  
Count Rate ◽  
Continuous Monitoring ◽  
Laser Rangefinder ◽  
Flux Intensity ◽  
Time Correction ◽  
Neutron Monitor Data ◽  
Monitor Data

We have carried out an experimental study of the influence of precipitation in the form of snow on measurements of the neutron flux intensity near Earth's surface. We have examined the state of the snow cover and its density, and found out that the density depends on the depth of the snow cover. Using the experimental results, we estimate the neutron absorption path in the snow. Changes in snow cover by 10–12 cm at a depth of 80 cm are shown to cause variations in the monitor count rate with an amplitude of 0.9 %. At the snow depth of 80 cm, the neutron monitor count rate decreases by about 8 %. The observed variations should be attributed to the meteorological effects of cosmic rays. The absorption coefficient of neutrons in the snow was also found from the correlation between the count rate of the neutron monitor and the amount of snow above the detector. We propose a real-time correction of the neutron monitor data for precipitation in the form of snow. For this purpose, we implement continuous monitoring of the amount of snow cover. The monitoring is provided by a snow meter made using a laser rangefinder module. We discuss the results obtained.

Investigation on contribution of neutron monitor data to estimation of aviation doses

2016 ◽  
Vol 11 ◽  
pp. 24-28 ◽  
Author(s):  
M. Kákona ◽  
O. Ploc ◽  
D. Kyselová ◽  
J. Kubančák ◽  
R. Langer ◽  
...  
Keyword(s):  
Neutron Monitor ◽  
Neutron Monitor Data ◽  
Monitor Data

scholarly journals New Method of Assessment of the Integral Fluence of Solar Energetic (> 1 GV Rigidity) Particles from Neutron Monitor Data

Solar Physics ◽  
2019 ◽  
Vol 294 (7) ◽  
Author(s):  
Sergey A. Koldobskiy ◽  
Gennady A. Kovaltsov ◽  
Alexander L. Mishev ◽  
Ilya G. Usoskin
Keyword(s):  
Neutron Monitor ◽  
New Method ◽  
Neutron Monitor Data ◽  
Method Of Assessment ◽  
Monitor Data

The effect of the thunderstorm activity on the tien shan neutron monitor data

2009 ◽  
Vol 73 (3) ◽  
pp. 394-396 ◽  
Author(s):  
V. P. Antonova ◽  
A. V. Gurevich ◽  
K. P. Zybin ◽  
A. N. Karashtin ◽  
S. V. Kryukov ◽  
...  
Keyword(s):  
Neutron Monitor ◽  
Thunderstorm Activity ◽  
Tien Shan ◽  
Neutron Monitor Data ◽  
Monitor Data

scholarly journals New neutron monitor altitude-dependent yield function and its application to an analysis of neutron-monitor data

2021 ◽  
Author(s):  
Sergey Koldobskiy ◽  
Alexander Mishev ◽  
Gennady Kovaltsov ◽  
Agnieszka Gil ◽  
Ilya Usoskin
Keyword(s):  
Neutron Monitor ◽  
Yield Function ◽  
Neutron Monitor Data ◽  
Monitor Data
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