Vertical Cutoff Rigidities in the South Atlantic PDF Download
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Author: M. A. Shea
Publisher:
ISBN:
Category : Geomagnetism
Languages : en
Pages : 16
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Book Description
Author: M. A. Shea
Publisher:
ISBN:
Category : Geomagnetism
Languages : en
Pages : 16
Get Book Here
Book Description
Author: M. A. Shea
Publisher:
ISBN:
Category :
Languages : en
Pages : 9
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Book Description
An updated five by fifteen degree world grid of trajectory-derived vertical cutoff rigidities for Epochs 1965 and 1975 has been calculated using the International Geomagnetic Reference Field with time derivatives applied for a 1975.0 Epoch. A comparison of these vertical cutoff rigidities with those calculated for Epoch 1955.0 shows that whereas minor changes in the cutoff rigidities (or about equal 0.20 GV) occur in many areas of the world over this 20-year interval, major changes ( 0.60 GV) occur in the Central and Southern Atlantic Ocean area and over the Central and South American land masses. While the changes in the Southern Hemisphere are primarily decreases in the vertical cutoff rigidities, there is an area in the Northern Hemisphere, principally in the Atlantic Ocean, where comparable increases in the vertical cutoff rigidities are calculated.
Author: M. A. Shea
Publisher:
ISBN:
Category : Computer simulation
Languages : en
Pages : 104
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Book Description
Tables of asymptotic directions and vertical cutoff rigidities for a selected set of cosmic-ray stations are presented. These values were obtained by the integration of vertically incident cosmic-ray trajectories through the Finch and Leaton (Epoch 1955) quiescent model of the geomagnetic field. The table of asymptotic directions contains the asymptotic latitudes and longitudes that specify the direction of approach from interplanetary space of a cosmic-ray particle. These asymptotic directions are given for specific rigidities above the main cone cutoff rigidity for each station, and at 0.01 GV rigidity intervals throughout the penumbra. Maps of the symptotic directions for each station are included. The table of vertical cutoff rigidities contains the geographic coordinates and L value of each cosmic-ray station together with the main cone cutoff rigidity, the Stoermer cutoff rigidity, and the effective cutoff rigidity. (Author).
Author: M. A. Shea
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 96
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Book Description
Tables of vertical cutoff rigidities calculated using the trajectory-tracing technique are given for two epochs of the geomagnetic field. The Finch and Leaton magnetic field coefficients were used for Epoch 1955, and the Jensen and Cain coefficients were used for Epoch 1960. Each table includes the geographic coordinates and L value of each location together with the main cone cutoff rigidity, the Stormer cutoff rigidity, and the effective cutoff rigidity. Data for approximately 2900 locations on the earth are presented.
Author: M. A. Shea
Publisher:
ISBN:
Category : Asymptotes
Languages : en
Pages : 112
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Book Description
Tables of asymptotic directions and vertical cutoff rigidities for a selected set of cosmic-ray stations are presented. These values were obtained by the integration of vertically incident cosmic-ray trajectories through the International Geomagnetic Reference Field model adjusted for a 1975.0 Epoch. The table of asymptotic directions contains the asymptotic latitudes and longitudes that specify the direction of approach from interplanetary space of a cosmic-ray particle. These asymptotic directions are given for specific rigidities above the main cone cutoff rigidity for each station, and at 0.01 GV rigidity intervals throughout the penumbra. Maps of the asymptotic directions for each station are also included. The table of vertical cutoff rigidities contains the geographic coordinates and L value of each cosmic-ray station together with the main cone cutoff rigidity, the Stormer cutoff rigidity, and the effective cutoff rigidity. (Author).
Author: M. A. Shea
Publisher:
ISBN:
Category : Asymptotes
Languages : en
Pages : 170
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Book Description
Tables of asymptotic directions and vertical cutoff rigidities for a five degree by fifteen degree world grid are presented. These values were obtained by the integration of vertically incident cosmic-ray trajectories through the Finch and Leaton (Epoch 1955) quiescent model of the geomagnetic field. The table of asymptotic directions contains the asymptotic latitudes and longitudes that specify the direction of approach, from interplanetary space, of a cosmic-ray particle. These asymptotic directions are given for each grid point for specific rigidities above the main cone cutoff rigidity. The table of vertical cutoff rigidities contains the geographic coordinates and L value of each location, together with the main cone cutoff rigidity, the Stormer cutoff rigidity, and the effective cutoff rigidity.
Author: P. J. Koenig
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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Book Description
A fairly sharp increase of 2.3% in the intensity of the nucleonic component of cosmic rays was observed at 30,000 feet pressure altitude along a contour of CONSTANT CALCULATED VERTICAL CUTOFF RIGIDITY ON A RESEARCH FLIGHT FROM Cape Town, South Africa, at 18 E longitude, to a point 2 W longitude. The increase seems to be an inherent feature of this region near the South Atlantic geomagnetic anomaly. Detailed cutoff rigidity calculations in vertical and inclined directions revealed that the observed increase may at least partly be ascribed to variation in effective cutoff rigidities along the route. However, the increase could also be attributed, at least as far as morphology is concerned, to the continuous precipitation in a restricted area of those high energy inner radiation belt protons that have short live-times. (Author).
Author: M. A. Shea
Publisher:
ISBN:
Category : Asymptotes
Languages : en
Pages : 172
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Book Description
Tables of asymptotic directions and vertical cutoff rigidities for a five degree by fifteen degree world grid are presented in this report. These values were obtained by the integration of vertically incident cosmic-ray trajectories through the International Geomagnetic Reference Field for Epoch 1965.0. The table of asymptotic directions contains the asymptotic latitudes and longitudes which specify the direction of approach, from interplanetary space, of a cosmic-ray particle. These asymptotic directions are given for each grid point for specific rigidities above the main cone cutoff rigidity. The table of vertical cutoff rigidities contains the geographic coordinates and L value of each location together with the main cone cutoff rigidity, the Stormer cutoff rigidity, and the effective cutoff rigidity. (Author).
Author: M. A. Shea
Publisher:
ISBN:
Category : Computer programs
Languages : en
Pages : 174
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Book Description
Tables of asymptotic directions and vertical cutoff rigidities for a five degree by fifteen degree world grid are presented. These values were obtained by the integration of vertically incident cosmic-ray trajectories through the International Geomagnetic Reference Field with time derivatives applied so that the coefficients form a quiescent model of the geomagnetic field for Epoch 1975.0. The table of asymptotic directions contains the asymptotic latitudes and longitudes which specify the direction of approach, from interplanetary space, of a cosmic-ray particle. These asymptotic directions are given for each grid point for specific rigidities above the main cone cutoff rigidity. The table of vertical cutoff rigidities contains the geographic coordinates and L value of each location together with the main cone cutoff rigidity, the Stoermer cutoff rigidity, and the effective cutoff rigidity.
Author: M. A. Shea
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 34
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Book Description
Tables of non-vertical cutoff rigidities calculated using the trajectory-tracing technique are given for 76 various locations. These calculations were made using the Finch and Leaton magnetic field coefficients appropriate for Epoch 1955. Each table includes the geographic coordinates and L value of each location, the zenith and azimuth angles for which the calculations were made, and the main cone cutoff rigidity, the Stormer cutoff rigidity, and the effective cutoff rigidity.
