A Study of Vertically Incident Cosmic-ray Trajectories Using Sixth Degree Simulations of the Geomagnetic Field PDF Download
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Author: M. A. Shea
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 396
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Book Description
Author: M. A. Shea
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 396
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Book Description
Author: M. A. Shea
Publisher:
ISBN:
Category : Astrophysics
Languages : en
Pages : 0
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Book Description
A study has been made of vertically incident cosmic-ray trajectories at more than 400 positions on the earth's surface using sixth-degree simulations of the quiescent geomagnetic field. Twenty-six of these positions are near the South African magnetic anomaly, and six other points are in a region of the North Atlantic where Pomerantz and Agarwal have reported anomalous results. The trajectories have been calculated for rigidities separated by intervals as small as 0.01 bv to allow for the effects of the penumbra. When these trajectories are used to determine cosmic-ray cutoff rigidities, differences greater than 15 percent from the Quenby and Wenk threshold values are found in the vicinity of South Africa, the South Atlantic, and the Canary Islands. Various latitude surveys are shown to exhibit consistency when plotted against the cutoff rigidities determined by this computational method. It is concluded that although currently available simulations of the geomagnetic field are not completely adequate over some portions of the earth to describe the cosmic-ray effects in their entirety, there is essentially no difference in the cutoff rigidities determined using two currently accepted field models, even though different penumbral structures are obtained. Asymptotic directions of approach and cutoff rigidities for a number of locations are listed.
Author: M. A. Shea
Publisher:
ISBN:
Category : Geomagnetism
Languages : en
Pages : 24
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Category : Aeronautics
Languages : en
Pages : 670
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Author: R. C. Filz
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Category : Atmosphere
Languages : en
Pages : 24
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Author: Robert E. Riecker
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Category : Faults (Geology)
Languages : en
Pages : 10
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Author: Wayne S. Hering
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ISBN:
Category : Atmosphere
Languages : en
Pages : 36
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An interim summary of the ozone climate over North America has been prepared from AFCRL ozonesonde network observations made during 1963 and 1964 (AD-435 873, -604 880, -623 018). Mean bimonthly distributions of ozone density computed for individual network stations depict the average ozone structure as a function of altitude and season for the first two years of network operation. Data are also presented on the standard deviation of ozone density and the mean seasonal distributions along a meridional cross section extending from the Canal Zone to Greenland. A brief statistical analysis indicates that approximately 35 to 50 percent of the variance in the total ozone amount at middle and high latitudes is given by the fluctuations in ozone density in the 11- to 13-km or 13- to 15-km layers. (Author).
Author: J. P. Mullen
Publisher:
ISBN:
Category : Artificial satellites
Languages : en
Pages : 20
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Author: Donald H. Eckhardt
Publisher:
ISBN:
Category : Moon
Languages : en
Pages : 12
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![Observation of the [delta]v PDF](https://books.google.com/books/content/images/frontcover/CJt7zkquHngC?fife=w80-h100)
Author: A. T. Stair
Publisher:
ISBN:
Category : Airglow
Languages : en
Pages : 10
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