Results 161 to 170 of about 1,274 (195)

Long-Term Changes in the Number and Magnitude of Forbush-Effects

Geomagnetism and Aeronomy, 2018
The IZMIRAN database of Forbush effects and interplanetary disturbances has been used to study long-term changes in the number and magnitude of Forbush effects in the last six solar cycles (1957–2016) for cosmic rays of rigidity of 10 GV. Solar activity cycles have been shown to be well expressed in data of Forbush effects, especially in large ...
A. A. Melkumyan, A. V. Belov, M. A. Abunina, A. A. Abunin, E. A. Eroshenko, V. A. Oleneva, V. G. Yanke   +6 more
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Relationship between Forbush effect parameters and the heliolongitude of solar sources

Geomagnetism and Aeronomy, 2013
All significant events in galactic cosmic rays for the last 55 years have been collected in a Forbush effect database created at the Pushkov Institute of Terrestrial Magnetism, Ionosphere, and Radiowave Propagation (hereinafter, IZMIRAN) based on data from the global network of neutron monitors.
M. A. Abunina, A. A. Abunin, A. V. Belov, E. A. Eroshenko, A. S. Asipenka, V. A. Oleneva, V. G. Yanke   +6 more
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The effect of Forbush decreases on the polar-night HOx concentration

2021
<div> <div> <div> <p>It is well-known that energetic particle precipitations during solar proton events increase ionization rates in the middle atmosphere enhancing the production of hydrogen oxide radicals (HOx) involved in the catalytic ozone destruction cycle.
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Forbush decrease effects on radiation dose received on-board aeroplanes

Radiation Protection Dosimetry, 2005
Doses received on-board aeroplanes during deep Forbush decreases (FDs) have been recently measured and published. Using an operational model of dose calculation, the effects on aviation dose of the FDs observed from 1981 to 2003 using neutron monitors are studied and a simplified method to estimate dose variations from galactic cosmic ray variations ...
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Analyzing the June 2015 Forbush effect by the spectrographic global survey

Bulletin of the Russian Academy of Sciences: Physics, 2017
The June 2015 Forbush effect is studied using ground-based measurement data on cosmic rays (CRs), obtained from the worldwide network of stations by the spectrographic global survey. When approximating the variation spectra via the exponential function of particle rigidity in the 10–50 GV range, the spectrum index is higher at the phase of maximum ...
M. V. Kravtsova, V. E. Sdobnov
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Forbush Effects Observed by the Helios Spacecraft

Geomagnetism and Aeronomy, 2022
N. S. Shlyk, A. V. Belov, M. A. Abunina, A. A. Abunin, A. Papaioannou   +4 more
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Forbush Effects and the Possibility of the Interaction of Magnetic Bottles Produced by Solar Flares

Nature, 1966
Forbush Effects and the Possibility of the Interaction of Magnetic Bottles Produced by Solar ...
S. GOPASYUK, L. KŘIVSKÝ
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Behavior of the cosmic ray density during the initial phase of the Forbush effect

Geomagnetism and Aeronomy, 2016
Variations in the cosmic ray density during the initial phase of the Forbush effect during the first hours after the arrival of the interplanetary shock wave have been studied with the use of data on variations in the cosmic ray density with a rigidity of 10 GV obtained by the global survey method by the world network of neutron monitors in 1957‒2012 ...
A. V. Belov, E. A. Eroshenko, M. A. Abunina, A. A. Abunin, V. A. Oleneva, V. G. Yanke   +5 more
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Effect of Forbush decreases of cosmic ray flux on ozone at higher middle latitudes

Advances in Space Research, 2001
Abstract The Forbush decreases of cosmic ray flux occur prevailingly together with geomagnetic storms, because these phenomena have a similar origin in solar/interplanetary processes. To study the effects of large Forbush decreases on total ozone at middle latitudes, we use the TOMS total ozone data along latitudinal circles 40°N and 50°N.
I. Fedulina, J. Laštovička
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The effect of CME expansion on Forbush decreases

2017
Identification and tracking of interplanetary coronal mass ejections (ICMEs) throughout the heliosphere is a growingly important aspect of space weather research. One of the ”signatures” of ICME passage is the corresponding Forbush decrease (FD), a short term decrease in the galactic cosmic ray flux. These depressions are observed at the surface of the
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