干旱区生态环境知识资源中心(Arid): The Paroxysmal Precipitation of the Desert: Flash Floods in the Southwestern United States

Arid

DOI	10.1029/2019WR025480
	The Paroxysmal Precipitation of the Desert: Flash Floods in the Southwestern United States
	Smith, James A.1; Baeck, Mary Lynn 1; Yang, Long 1; Signell, Julia 1; Morin, Efrat 2; Goodrich, David C.3
通讯作者	Smith, James A.
来源期刊	WATER RESOURCES RESEARCH
ISSN	0043-1397
EISSN	1944-7973
出版年	2019
卷号	55 期号:12 页码:10218-10247
英文摘要	The 14 September 2015 Hildale, Utah, storm resulted in 20 flash flood fatalities, making it the most deadly natural disaster in Utah history; it is the quintessential example of the paroxysmal precipitation of the desert. The measured peak discharge from Maxwell Canyon at a drainage area of 5.3 km(2) was 266 m(3)/s, a value that exceeds envelope curve peaks for Utah. The 14 September 2015 flash flood reflects features common to other major flash flood events in the region, as well as unique features. The flood was produced by a hailstorm that was moving rapidly from southwest to northeast and intensified as it interacted with complex terrain. Polarimetric radar observations show that the storm exhibited striking temporal variability, with the Maxwell Canyon tributary of Short Creek and a small portion of the East Fork Virgin River basin experiencing extreme precipitation. Periods of extreme rainfall rates for the 14 September 2015 storm are characterized by K-DP signatures of extreme rainfall in polarimetric radar measurements. Similar K-DP signatures characterized multiple storms that have produced record and near-record flood peaks in Colorado Plateau watersheds. The climatology of monsoon thunderstorms that produce flash floods exhibits striking spatial heterogeneities in storm occurrence and motion. The hydroclimatology of flash flooding in arid/semiarid watersheds of the southwestern United States exhibits relatively weak dependence on drainage basin area. Large flood peaks over a broad range of basin scales can be produced by small thunderstorms like the 14 September 2015 Hildale Storm, which pass close to the outlet.
类型	Article
语种	英语
国家	USA ; Israel
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000500892700001
WOS关键词	NORTH-AMERICAN MONSOON ; RIVER DRAINAGE-BASIN ; EXTREME FLOODS ; METEOROLOGICAL CHARACTERISTICS ; RAINFALL EVENTS ; SUMMER MONSOON ; PART II ; VARIABILITY ; PATTERNS ; STORM
WOS类目	Environmental Sciences ; Limnology ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources
EI主题词	2019-12-06
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311612
作者单位	1.Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA; 2.Hebrew Univ Jerusalem, Inst Earth Sci, Jerusalem, Israel; 3.USDA ARS, Tucson, AZ USA
推荐引用方式 GB/T 7714	Smith, James A.,Baeck, Mary Lynn,Yang, Long,et al. The Paroxysmal Precipitation of the Desert: Flash Floods in the Southwestern United States[J]. Hebrew University of Jerusalem,2019,55(12):10218-10247.
APA	Smith, James A.,Baeck, Mary Lynn,Yang, Long,Signell, Julia,Morin, Efrat,&Goodrich, David C..(2019).The Paroxysmal Precipitation of the Desert: Flash Floods in the Southwestern United States.WATER RESOURCES RESEARCH,55(12),10218-10247.
MLA	Smith, James A.,et al."The Paroxysmal Precipitation of the Desert: Flash Floods in the Southwestern United States".WATER RESOURCES RESEARCH 55.12(2019):10218-10247.