~(137)Cs法在风沙过程研究中的应用前景
文献类型：期刊论文
| 作者 | 严平1; 张信宝2
|
| 刊名 | 中国沙漠
 |
| 出版日期 | 1998 |
| 卷号 | 18期号:2页码:182-187 |
| 关键词 | ~（137）Cs法 风沙过程 应用前景 |
| ISSN号 | 1000-694X |
| 其他题名 | PROSPECTS OF CAESIUM-137 USED IN THE STUDY OF AEOLIAN PROCESSES |
| 通讯作者 | 严平 |
| 合作状况 | 国内 |
| 中文摘要 | １３７Ｃｓ法在土壤侵蚀与泥沙沉积研究中已得到普遍的应用，但在风沙过程研究中尚未引起足够的重视。针对风沙过程研究中存在的有关问题，对１３７Ｃｓ法的应用前景作了展望，并提出了１３７Ｃｓ应用的若干建议。 |
| 英文摘要 | A eol ian pr ocesses that involve the mobilizat ion, t ranspo rt and depositio n of material by w ind are the key to understand desert g eomorpholog y and the character ist ics of aeolian sediment s. In the study of aeo lian processes, a gr eat amount of result s ranging f rom the ent rainment o f an indiv idual gr ain to the movement of dunes composed o f many hundreds o f tho usands of tones sand hav e achieved by means of field invest igat ion, wind tunnel ex periment , remote sensing , sedimentolo gy and theoretical modelling etc. . How ev er , as to the t ime scales, these methods alw ays concern w ith either the ancient geolog ical variat ion o f desert env ir onment or the instantaneous g rain saltation, unfo rtunately ig noring the precise measurement of recent or modern aeo lian pr ocesses w hich reg arded as more sensit ive r esponse to the glo bal change. U p now , the aeo lian pr ocesses w ith middle t ime scale of 10s y r. remain to be g aps relat iv ely . In accordance w ith the abo ve limitation, a new t racing method of caesium- 137 to estimate the modern aeolian processes is int roduced in this paper . T he w orld-fallout o f caesium - 137 asso ciated w ith the nuclear w eapons test s dur ing 1950s and 1960s has pr ovided a v aluable man-made t racer for studies of so il erosio n and sediment delivery . T he concentr at ion o f fallout of caesium - 137 in surface horizons and it s low leachability have al low ed this radioiso tope to be used as a geolog ic dateline to determine the rates of soil erosion. At pr esent , the use of caesium- 137 as tr acer of soil w ater ero sion and sediment deposition has developed rapidly and w idespreadly around the w or ld, meanw hile the est imat io n of w ind er osion and sedimentation has ado pted the method a lit t le. T herefo re, on the basis o f the t racing principles of caesium- 137, some advantag es and disadvantages of using the tr acer in the study o f aeo lian processes are discussed. |
| 学科主题 | X142 |
| 分类号 | X142 |
| 收录类别 | CSCD ; 北大中文核心 |
| 资助信息 | 中国科学院重大项目 |
| 语种 | 中文 |
| CSCD记录号 | CSCD:477877 |
| 公开日期 | 2011-03-30 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/2885]  |
| 专题 | 成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前） 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.中国科学院兰州沙漠研究所 2.中国科学院、水利部成都山地灾害与环境研究所 |
| 推荐引用方式 GB/T 7714 | 严平,张信宝. ~(137)Cs法在风沙过程研究中的应用前景[J]. 中国沙漠,1998,18(2):182-187. |
| APA | 严平,&张信宝.(1998).~(137)Cs法在风沙过程研究中的应用前景.中国沙漠,18(2),182-187. |
| MLA | 严平,et al."~(137)Cs法在风沙过程研究中的应用前景".中国沙漠 18.2(1998):182-187. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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