DOI: 10.1002/2016GL069324
论文题名: How long does precipitation inhibit wind erosion in the Sahel?
作者: Bergametti G. ; Rajot J.L. ; Pierre C. ; Bouet C. ; Marticorena B.
刊名: Geophysical Research Letters
ISSN: 0094-9591
EISSN: 1944-9322
出版年: 2016
卷: 43, 期: 12 起始页码: 6643
结束页码: 6649
语种: 英语
英文关键词: dust emission
; rain
; Sahel
; wind erosion
Scopus关键词: Coastal engineering
; Dust
; Erosion
; Rain
; Soil moisture
; Wind
; Cumulative rainfall
; Dust emission
; Rain events
; Sahel
; Sand transport
; Simultaneous measurement
; Wind erosions
; Wind speed
; Precipitation (meteorology)
英文摘要: Simultaneous measurements of saltation, wind speed, and rainfall performed in Niger before, during, and after 18 rain events are used to investigate how rain events affect wind erosion in the Sahel. The results show that the inhibition of saltation is rapid but progressive after the beginning of a rain event. The decrease of sand transport during the rain event is better linked to the time elapsed from the beginning of the rain event rather than to the cumulative rainfall. In the Sahel, after a rain event, less than 12 h is necessary to almost fully restore the sand transport potential. Our results suggest that assuming that no sand transport and dust emission occur during the 12 h following the end of a rain event could be a reasonable alternative to existing parameterizations of the influence of soil moisture on the wind erosion threshold, at least for the Sahelian conditions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84976871253&doi=10.1002%2f2016GL069324&partnerID=40&md5=5562c202c47267896ded9ccbf2ec7943
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10554
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Laboratoire Interuniversitaire des Systèmes Atmosphériques, UMR CNRS 7583, Université Paris-Est Créteil and Université Paris Diderot, IPSL, Paris, France
Recommended Citation:
Bergametti G.,Rajot J.L.,Pierre C.,et al. How long does precipitation inhibit wind erosion in the Sahel?[J]. Geophysical Research Letters,2016-01-01,43(12).