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USE OF ~(35)S TO STUDY RATES OF SULPHUR MIGRATION IN THE FLAT TOPS WILDERNESS AREA, COLORADO

机译:〜(35)S在科罗拉多州平顶野生生物区域中硫迁移率的研究

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During the summers of 1992 and 1993, concentrations of tritium (1992 only) and naturally occurring ~(35)S were measured at the Ned Wilson Lake watershed, in the Flat Tops Wilderness area, Colorado. Samples were collected from Ned Wilson Lake, Upper Ned Wilson Lake and a small spring which is most likely representative of shallow groundwater. Tritium concentrations varied between 10.2-11.3 tritium units (TU), which is similar to concentrations in present-day precipitation. The tritium results indicate that the time-scales for hydrological processes in this watershed are of the order of a few years at most. Sulphur-35, which is produced by cosmic ray spallation of argon in the atmosphere, had concentrations of several millibecquerels per litre in the two lakes, and was close to the detection limit in the three measurements of the spring. These results indicate that the sulphur in the lakes has a residence time of the order of 100-200 days, while the shallow groundwater has a residence time of approximately one year.
机译:在1992年和1993年夏季,在科罗拉多州Flat Tops Wilderness地区的Ned Wilson湖流域测量了((仅1992年)和自然存在的〜(35)S的浓度。样品采集自内德·威尔逊湖,上内德·威尔逊湖和一个小泉,最有可能代表浅层地下水。 concentrations浓度在10.2-11.3 units单位(TU)之间变化,与当今降水中的浓度相似。的结果表明,该流域的水文过程的时间尺度最多为几年。硫35是由大气中的氩的宇宙射线散裂产生的,在两个湖泊中每升的浓度为几毫贝克勒尔,接近春季的三个测量中的检测极限。这些结果表明,湖泊中的硫的滞留时间约为100-200天,而浅层地下水的滞留时间约为1年。

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