Document Detail


Seasonal 7Be concentrations in near-surface air of Granada (Spain) in the period 1993-2001.
MedLine Citation:
PMID:  12941506     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Near-surface air samples for assessment of seasonal 7Be levels were taken weekly at Granada, Spain, (37 degrees 10'50"N-3 degrees 35'44"W, altitude 670 m) in the period 1993-2001. The 7Be levels measured reflect strong seasonal trends. Concentrations during autumn and/or winter showed a minimum (ca. 1.5 mBq/m3), and in each year a fallout maximum was found in summer (ca. 7.6 mBq/m3). Multiple regression of 7Be concentrations with temperature and rainfall, and with sunspot number explained about 71% of the variance in the 7Be data. The data reveal strong variations in the mean annual 7Be concentrations due to variations in the flux of cosmic galactic primary radiation caused by the 11-year sunspot cycle. A difference of a factor of 2.6 was found between the highest level (5.8 mBq/m3) obtained in 1996 (beginning of the solar cycle 23) and the lowest (2.6 mBq/m3) obtained in 2000 (maximum of the solar cycle 23).
Authors:
M Azahra; A Camacho-García; C González-Gómez; J J López-Peñalver; T El Bardouni
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine     Volume:  59     ISSN:  0969-8043     ISO Abbreviation:  Appl Radiat Isot     Publication Date:    2003 Aug-Sep
Date Detail:
Created Date:  2003-08-27     Completed Date:  2003-11-20     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9306253     Medline TA:  Appl Radiat Isot     Country:  England    
Other Details:
Languages:  eng     Pagination:  159-64     Citation Subset:  IM    
Affiliation:
Laboratorio de Radioquímica y Radiología Ambiental, Facultad de Ciencias, Universidad de Granada, Av Fuentenueva, E-18071 Granada, Spain. labradiq@ugr.es
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MeSH Terms
Descriptor/Qualifier:
Air Pollution, Radioactive / analysis*
Atmosphere / analysis*
Beryllium / analysis*
Cosmic Radiation
Periodicity
Radiation Dosage
Radiometry / methods*
Seasons*
Spain
Statistics as Topic
Chemical
Reg. No./Substance:
7440-41-7/Beryllium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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