Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1134/S102485601606004X |
| Quasiperiodic Saltation in the Windsand Flux over Desertified Areas | |
| Gorchakov, G. I.; Karpov, A. V.; Kuznetsov, G. A.; Buntov, D. V. | |
| 通讯作者 | Gorchakov, GI |
| 来源期刊 | ATMOSPHERIC AND OCEANIC OPTICS
 |
| ISSN | 0869-5695 |
| EISSN | 2070-0393 |
| 出版年 | 2016 |
| 卷号 | 29期号:6页码:501-506 |
| 英文摘要 | Saltation in a windsand flux over a desertified area is studied on the basis of high-speed video recording data using spectral and wavelet analysis. Features of quasiperiodic variations in the saltating sand concentration are studied. It is ascertained that narrow bands in the spectrum ("spectral lines") of the power density of the saltating sand concentration fluctuations in the range from 100 to 200 Hz are consistent with trains (wave packets) of up to 8-9 periods in duration. It is suggested to use the duration of the trains observed as a measure of the coherence of wind speed pulsations in the surface air layer. It is shown that the trains in the quasiperiodic variability of the saltating sand concentration can be explained by the interaction of wind gusts with wave irregularities on the underlying surface of a fine ripple type. The wave packet formation of 4-5 periods in duration can be explained using the jet-pulse saltation model. |
| 英文关键词 | desertification windsand flux saltation mechanism saltating sand concentration quasiperiodic variations in concentration wave packet duration instantaneous frequency jet saltation wind speed pulsation coherence |
| 类型 | Article |
| 语种 | 英语 |
| 收录类别 | ESCI |
| WOS记录号 | WOS:000408721000003 |
| WOS类目 | Optics |
| WOS研究方向 | Optics |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/331884 |
| 作者单位 | [Gorchakov, G. I.; Karpov, A. V.; Kuznetsov, G. A.; Buntov, D. V.] Russian Acad Sci, Obukhov Inst Atmospher Phys, Moscow 119017, Russia |
| 推荐引用方式 GB/T 7714 | Gorchakov, G. I.,Karpov, A. V.,Kuznetsov, G. A.,et al. Quasiperiodic Saltation in the Windsand Flux over Desertified Areas[J],2016,29(6):501-506. |
| APA | Gorchakov, G. I.,Karpov, A. V.,Kuznetsov, G. A.,&Buntov, D. V..(2016).Quasiperiodic Saltation in the Windsand Flux over Desertified Areas.ATMOSPHERIC AND OCEANIC OPTICS,29(6),501-506. |
| MLA | Gorchakov, G. I.,et al."Quasiperiodic Saltation in the Windsand Flux over Desertified Areas".ATMOSPHERIC AND OCEANIC OPTICS 29.6(2016):501-506. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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