Results 201 to 210 of about 1,927 (242)

The geocoronal responses to the geomagnetic disturbances

Journal of Geophysical Research: Space Physics, 2017
AbstractAtomic hydrogen atoms in the terrestrial exosphere resonantly scatter solar Lyman alpha (121.6 nm) radiation, observed as the hydrogen geocorona. Measurements of scattered solar photons allow us to probe time‐varying distributions of exospheric hydrogen atoms.
M. Kuwabara, K. Yoshioka, G. Murakami, F. Tsuchiya, T. Kimura, A. Yamazaki, I. Yoshikawa   +6 more
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Polar geomagnetic disturbances

Planetary and Space Science, 1963
Results of recent observations of geomagnetic disturbances in both northern and southern high latitudes are critically reviewed, and various theories on these phenomena are introduced. In Section 1, an additional geomagnetic daily variation, observed in the polar areas on magnetically quiet days, is discussed.
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The Evolution Characteristics of Geomagnetic Disturbances During Geomagnetic Storm

Chinese Journal of Geophysics, 2007
AbstractWith the data of the geomagnetic meridian observatories in China, 25 geomagnetic storms in the period of 1997 to 1999 have been analyzed by using three kinds of methods which are the method of Natural Orthogonal Components (NOC), Correlation analysis and Fourier analysis. Three steps have been adopted to decompose the storm‐time variation (Dst)
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Metod of determining the epicenter of geomagnetic disturbance

2013 IEEE 7th International Conference on Intelligent Data Acquisition and Advanced Computing Systems (IDAACS), 2013
The article deals with the method for estimating the unfavorable living areas for people. The method is based on a distributed registration of the variations of the geomagnetic field and determining the area of their origin. The proposed algorithms are analyzed on the example of irregular geomagnetic pulsations of the Pi-2.
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Solar activity and geomagnetic disturbances

Geomagnetism and Aeronomy, 2013
An analysis of IZNIRAN magnetic observatory data indicated that geomagnetic storms with sudden and gradual commencements form two independent populations with respect to the disturbance occurrence time and character because the solar sources of these disturbances are different.
V. N. Obridko, Kh. D. Kanonidi, T. A. Mitrofanova, B. D. Shelting   +3 more
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The influence of the Moon on geomagnetic disturbances

Journal of Geophysical Research, 1963
It is shown that occurrences of geomagnetic disturbances of various intensities are not uniformly distributed in lunar phase. There is a tendency for storms to occur preferentially near first and third quarters and to avoid dates corresponding to new moon.
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Atmospheric Pressure and Geomagnetic Disturbance

Nature, 1952
IN seeking for possible relationships between geomagnetism and atmospheric pressure, J. M. Stagg1 compared the mean diurnal pressure variation at Aberdeen on magnetically quiet days with that on magnetically disturbed days (five of each type per month) over the seven years 1922–28.
R. P. WALDO LEWIS, D. H. McINTOSH
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Atmospheric temperatures and geomagnetic disturbances

Journal of Geophysical Research, 1967
Although the mechanisms relating atmospheric heating and geomagnetic disturbances still need to be clarified, their positive correlation has been confirmed. In a recent paper Jacchia et al. [1967] reported values for the temperature coefficient, ΔT/ΔKp at high latitudes that were 15–25% greater than at low latitudes for Kpmax 5.
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The normality of geomagnetic disturbance at Huancayo

Geofisica pura e applicata, 1951
Evidence is adduced indicating that geomagnetic disturbance at Huancayo isnormal, that is, comparable with that shown elsewhere in similar latitudes —as contrasted with the remarkable Huancayoabnormality, in the horizontal magnetic force, of the quiet-day solar and lunar daily variations, and in theS q augmentation (solar flare effect).
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Geomagnetic disturbances and complex sunspots

Astrophysics and Space Science, 1975
Statistical result shows that a large geomagnetic disturbance is most likely to occur at the time when a complex sunspot is in 6.7° E-19.9° E from the central meridian of the solar disk during the period 1968–1972.
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