赵仕雄. 1987. 高原五个雹块的同位素研究[J]. 气象学报, 45(2):169-178, doi:10.11676/qxxb1987.021 |
高原五个雹块的同位素研究 |
THE ISOTOPIC STUDY OF 5 HAILSTONES ON THE PLATEAU |
投稿时间:1985-03-22 修订日期:1986-02-25 |
DOI:10.11676/qxxb1987.021 |
中文关键词: |
英文关键词: |
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中文摘要: |
通过对1983年7月23日及8月6日青海两次强雹暴降落的5个雹块的氘含量测定和给晶结构的分析及温度标尺的确定,得出了两次雹暴雹块的氘值为-65.8-76.6%和-6.1-58.6%.相应雹块生长的环境温度分别为-18-23℃和-1.3-27℃(高度7.7-8.6km和5.4-9.0km).雹块胚胎为锥状霰,氘值分析表明,霰胚分别在-16.8-19.5℃和-11.8-20.8℃形成.雹块皆生长在云的中部和中上部.7月23日雹块是在上升气流中一直上升增长而成,而8月6日是经历一上一下运动增长而成.文章通过两种方法计算的上升气流速度,对雹块的轨迹作了有意义的讨论. |
英文摘要: |
The deuterium,crystal structures of 5 hailstones from two severe storms have been examined.Hailstones fell in Ding Hai area,on 23 July 1983 and 6 August 1983.Placing an absolute temperature scale against the deuterium values were discussed.The deuterium concentration on 23 July had values ranging from -65.8-76.6‰ and on 6 August had -6.1-58.6‰,these corresponded to the hailstones at ambient temperatures about -18-23℃ (altitude 7.7-8.6 km),and -1.3-27℃ (5.9-9.0 km).The type of embryos in the hailstones was conical graupel.The deuterium values indicated that the graupel embryos were formed at temperature -16.8-19.5℃ (on 23 July) and -11.8-20℃ (on 6 August).It is found that hailstones grew at middle or upper part of the cloud,the hailstones grew continually in the updraft on 23 July and the hailstones were in up and down motions on 6 August.In this paper,the updraft was calculated by the two methods and hailstones trajectories were discussed. |
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