自然界的氚(H~3)是氢的一种宇宙成因放射性同位素,半衰期为12.26年。1954年以来热核试验释放出大量人工氚,使地球上氚的总量增加了几个数量级,天然水中氚含量明显增高,成为研究水循环的一种理想示踪剂,且已被应用于水文、气象、海洋、环境等科学领域。 1977—1978年,在天山托木尔峰地区登山科学考察期间,中国科学院兰州冰川冻土研究 Tritium (H ~ 3) in nature is a cosmogenic radioactive isotope of hydrogen with a half-life of 12.26 years. Since 1954, a large amount of artificial tritium has been released from the thermonuclear test, which has increased the total amount of tritium on earth by several orders of magnitude and markedly increased the tritium content in natural water. It has become an ideal tracer for studying the water cycle and has been applied to hydrology, Meteorology, oceanography, environment and other scientific fields. From 1977 to 1978, during the mountaineering scientific investigation in Mount Tuomu, Tianshan Mountains, the research on glacial frozen soil in Lanzhou, Chinese Academy of Sciences