| 青海共和盆地降尘观测与137Cs测定的初步结果 |
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| 引用本文： | 严平,董光荣.青海共和盆地降尘观测与137Cs测定的初步结果[J].环境科学,2001,22(2):64-68. |
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| 作者姓名： | 严平 董光荣 |
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| 作者单位： | 1. 北京师范大学资源科学研究所
2. 中国科学院寒区旱区环境与工程研究所, |
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| 基金项目： | 国家自然科学基金项目(4001001);北京师范大学"自然灾害与环境演变教育部重点实验室"访问学者基金资助项目 |
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| 摘 要： | 通过对1998～1999年共和盆地的降尘观测和尘样的137Cs分析,测定了降尘速率及其月分配;对尘源进行了137Cs示踪,并从理论上估算出降尘产生的137Cs再分配,对沉积速率的计算模型进行了讨论.作为采用137Cs法研究沙尘暴降尘的一次尝试,这些初步结果对沙尘暴测定及其强度评估等方面研究有一定的借鉴作用.
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| 关 键 词： | 降尘 137Cs法 沉积速率 共和盆地 |
| 文章编号： | 0250-3301(2001)02-05-0064 |
| 收稿时间： | 2000/5/30 0:00:00 |
| 修稿时间： | 2000年5月30日 |
Dust Deposition and Its Measurement by 137Cs in The Gonghe Basin, Qinghai Province, China |
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| Yan Ping and Dong Guangrong.Dust Deposition and Its Measurement by 137Cs in The Gonghe Basin, Qinghai Province, China[J].Chinese Journal of Environmental Science,2001,22(2):64-68. |
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| Authors: | Yan Ping and Dong Guangrong |
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| Institution: | Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, Beijing Normal University, Beijing 100875, China. |
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| Abstract: | Through the dust observation at three sites in the Gonghe Basin, Qinghai Province, China and 137Cs analysis of dust samples, the 137Cs technique is firstly used to study the dust deposition by storm. The rate of dust deposition and its monthly distribution were determined and the dust source traced by 137Cs. It is apparent that the 137Cs model for accumulation rate must be modified because of the 137Cs redistribution from dust gain. These tentative results may be have some significant implications for further dust storm research. |
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| Keywords: | dust deposition 137Cs technique deposition rate Gonghe Basin |
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