کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1739233 1016839 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Beryllium-7 in near-surface air and deposition at Brisbane, Australia
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
Beryllium-7 in near-surface air and deposition at Brisbane, Australia
چکیده انگلیسی

Measurements of 7Be concentrations in near-surface air and 7Be deposition were carried out at Brisbane, Australia. Concentrations of 7Be in near-surface air measured over 4 years show seasonal variations with values above the annual mean occurring mainly in the spring and summer months of each year. These higher concentrations coincide with the expected influx of stratospheric air to the planetary boundary layer in early spring and higher rates of convective circulation within the troposphere during summer. 7Be deposition measurements over 3 years show seasonal variations similar to the seasonal rainfall pattern. There is a statistically significant (p < 0.001) linear relationship between monthly 7Be deposition and rainfall amount. This relationship is used to calculate the net cumulative 7Be areal activity density.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Radioactivity - Volume 99, Issue 3, March 2008, Pages 461–467
نویسندگان
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