Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/hyp.6352 |
Post-wildfire changes in suspended sediment rating curves: Sabino Canyon, Arizona | |
Desilets, Sharon L. E.; Nijssen, Bart; Ekwurzel, Brenda; Ferre, Ty P. A. | |
通讯作者 | Desilets, Sharon L. E. |
来源期刊 | HYDROLOGICAL PROCESSES
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ISSN | 0885-6087 |
EISSN | 1099-1085 |
出版年 | 2007 |
卷号 | 21期号:11页码:1413-1423 |
英文摘要 | Wildfire has been shown to increase erosion by several orders Of magnitude, but knowledge regarding short-term variations in post-fire sediment transport processes has been lacking. We present a detailed analysis of the immediate post-fire sediment dynamics in a semi-arid basin in the Southwestern USA based on suspended sediment rating curves. During June and July 2003, the Aspen Fire in the Coronado National Forest of southern Arizona burned an area of 343 km(2). Surface water samples were collected in an affected watershed using an event-based sampling strategy. Sediment rating parameters were determined for individual storm events during, the first 18 months after the fire. The highest sediment concentrations were observed immediately after the tire. Through the two subsequent monsoon seasons there was a progressive change in rating parameters related to the preferential removal of fine to coarse sediment. During the corresponding winter seasons, there was a lower supply of sediment from the hillslopes, resulting in a time-invariant set of sediment rating parameters. A sediment mass-balance model corroborated the physical interpretation. The temporal variability in the sediment rating parameters demonstrates the importance of storm-based sampling in areas with intense monsoon activity to characterize post-fire sediment transport accurately. In particular, recovery of rating parameters depends on the number of high-intensity rainstorms. These findings can be used to constrain rapid assessment fire-response models for planning mitigation activities. Copyright (c) 2006 John Wiley & Sons, Ltd. |
英文关键词 | wildfire suspended sediment sediment rating curves erosion sediment yield Arizona |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000246534100003 |
WOS关键词 | TRANSPORT ; FIRE ; BASINS |
WOS类目 | Water Resources |
WOS研究方向 | Water Resources |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/154482 |
作者单位 | (1)Univ Arizona, Dept Hydrol & Water Resources, Tucson, AZ 85721 USA;(2)Univ Arizona, Dept Civil Engn & Engn Mech, Tucson, AZ 85721 USA |
推荐引用方式 GB/T 7714 | Desilets, Sharon L. E.,Nijssen, Bart,Ekwurzel, Brenda,et al. Post-wildfire changes in suspended sediment rating curves: Sabino Canyon, Arizona[J]. University of Arizona,2007,21(11):1413-1423. |
APA | Desilets, Sharon L. E.,Nijssen, Bart,Ekwurzel, Brenda,&Ferre, Ty P. A..(2007).Post-wildfire changes in suspended sediment rating curves: Sabino Canyon, Arizona.HYDROLOGICAL PROCESSES,21(11),1413-1423. |
MLA | Desilets, Sharon L. E.,et al."Post-wildfire changes in suspended sediment rating curves: Sabino Canyon, Arizona".HYDROLOGICAL PROCESSES 21.11(2007):1413-1423. |
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