The Peak in radioactive Fallout in the Temperate Zone of the Northern Hemisphere

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概要

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• It has been pointed out that Sr-90 deposition is much greater in the temperate zone than in the tropical or polar zones with respect to the same amount of precipitation. This means that there is a difference in the air-borne activity between zones. The concentrated accumulation of radioactive debris in the temperate zone seems to be related to the meteorological conditions in the upper troposphere. In the temperate region between 30°N to 60°N, troughs at 500 mb and above are often observed while few troughs appears in the polar and tropical regions. The radioactive dusts may be carried down to the lower troposphere owing to the subsidence of the air behind troughs and north of jet streams. This may accelerates the deposition of radioactive dust on the middle latitude.

• 日本放射線影響学会の論文

著者

• 三宅 泰雄

  Meteorological Research Institute

• 猿橋 勝子

  Meteorological Research Institute

• 葛城 幸雄

  Meteorological Research Institute

• 金沢 照子

  Meteorological Research Institute

関連論文

• The Peak in radioactive Fallout in the Temperate Zone of the Northern Hemisphere
• Penetration of ^Sr and ^Cs in deep layers of the Pacific and vertical diffusion rate of deep water
• Cesium 137 and Strontium 90 in Sea Water
• A Comparison of Analytical Techniques Used for Determination of Fallout Cesium in Sea Water for Oceanographic Purpose

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