ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY

Investigations of results obtained from the five cosmic ray measurements aboard SOYA during 1956-62 show a double 'knee' in latitude dependence around Cape Town anomaly. The first 'knee' is always found near 40° geomagnetic latitude taking account of the longitude effect in cosmi...

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Main Author: Masahiro KODAMA
Format: Article
Language:English
Published: National Institute of Polar Research 1963-03-01
Series:Antarctic Record
Online Access:https://doi.org/10.15094/00007258
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author Masahiro KODAMA
author_facet Masahiro KODAMA
author_sort Masahiro KODAMA
collection DOAJ
description Investigations of results obtained from the five cosmic ray measurements aboard SOYA during 1956-62 show a double 'knee' in latitude dependence around Cape Town anomaly. The first 'knee' is always found near 40° geomagnetic latitude taking account of the longitude effect in cosmic rays throughout the whole surveys. The position of the second 'knee' varies from about 40° to near 50° with year. The former is attributed to the atmospheric cut-off which is more effective upon the low energy cosmic rays such as incoming to Cape Town anomaly. The latter is most likely identified with the normal one found in several other longitudes, or, due to the cut-off in the primary spectrum of cosmic rays.
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spelling doaj.art-17dd3cd4061140118093e346b44c946b2022-12-21T19:12:57ZengNational Institute of Polar ResearchAntarctic Record0085-72892432-079X1963-03-01181568157110.15094/00007258ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALYMasahiro KODAMA0The Institute of Physical and Chemical ResearchInvestigations of results obtained from the five cosmic ray measurements aboard SOYA during 1956-62 show a double 'knee' in latitude dependence around Cape Town anomaly. The first 'knee' is always found near 40° geomagnetic latitude taking account of the longitude effect in cosmic rays throughout the whole surveys. The position of the second 'knee' varies from about 40° to near 50° with year. The former is attributed to the atmospheric cut-off which is more effective upon the low energy cosmic rays such as incoming to Cape Town anomaly. The latter is most likely identified with the normal one found in several other longitudes, or, due to the cut-off in the primary spectrum of cosmic rays.https://doi.org/10.15094/00007258
spellingShingle Masahiro KODAMA
ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY
Antarctic Record
title ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY
title_full ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY
title_fullStr ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY
title_full_unstemmed ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY
title_short ON THE COSMIC RAY LATITUDE KNEE AROUND CAPE TOWN ANOMALY
title_sort on the cosmic ray latitude knee around cape town anomaly
url https://doi.org/10.15094/00007258
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