Erlinger Ch, Lettner H, Hubmer A, Hofmann W, Steinhäusler F
Abteilung Physik und Biophysik, Fachbereich Materialwissenschaften und Physik, Universität Salzburg, Hellbrunnerstrasse 34, Salzburg, Austria.
J Environ Radioact. 2008 Aug;99(8):1294-301. doi: 10.1016/j.jenvrad.2008.03.012. Epub 2008 May 23.
Man-made and natural radionuclides in Lake Wallersee were determined in the pre-Alpine environment at the northern slope of the Alps, which was heavily affected by the Chernobyl fallout in May 1986. The objective of this study was to get knowledge of location and quantity of man-made radionuclide input (especially (137)Cs) generated in the Chernobyl accident to lake sediments. Eleven sediment cores were sampled and activity depth profiles of (137)Cs and (210)Pb were determined with 5mm depth-resolution. The Chernobyl fallout produced an extreme (137)Cs peak in the sediment cores providing an excellent time marker. The chronological interpretation of deeper sediment layers was done by radiochemical analysis of (90)Sr and (239+240)Pu, which were released during atmospheric weapons' tests in the 1950s and 1960s. This allowed a complete chronological analysis of the sediment cores with a very compact set of data.
在阿尔卑斯山北坡的前阿尔卑斯环境中，对瓦勒湖中的人造和天然放射性核素进行了测定，该地区在1986年5月受到切尔诺贝利核事故沉降物的严重影响。本研究的目的是了解切尔诺贝利事故产生的人造放射性核素（特别是¹³⁷Cs）输入到湖泊沉积物中的位置和数量。采集了11个沉积物岩芯，以5毫米的深度分辨率测定了¹³⁷Cs和²¹⁰Pb的活度深度剖面。切尔诺贝利核事故沉降物在沉积物岩芯中产生了一个极高的¹³⁷Cs峰值，提供了一个极好的时间标记。通过对²³⁹⁺²⁴⁰Pu和⁹⁰Sr的放射化学分析，对更深层的沉积物进行了年代学解释，这些放射性核素是在20世纪50年代和60年代的大气层武器试验期间释放的。这使得能够用一套非常紧凑的数据对沉积物岩芯进行完整的年代学分析。
