干旱区生态环境知识资源中心(Arid): Channel mobility drives a diverse stratigraphic architecture in the dryland Mojave River (California, USA)

Arid

DOI	10.1002/esp.4841
	Channel mobility drives a diverse stratigraphic architecture in the dryland Mojave River (California, USA)
	Ielpi, Alessandro 1; Lapotre, Mathieu G. A.2; Finotello, Alvise 3,4; Ghinassi, Massimiliano 3; D'; Alpaos, Andrea 3
通讯作者	Ielpi, Alessandro
来源期刊	EARTH SURFACE PROCESSES AND LANDFORMS
ISSN	0197-9337
EISSN	1096-9837
出版年	2020
卷号	45 期号:8 页码:1717-1731
英文摘要	The links between flood frequency and rates of channel migration are poorly defined in the ephemeral rivers typical of arid regions. Exploring these links in desert fluvial landscapes would augment our understanding of watershed biogeochemistry and river morphogenesis on early Earth (i.e. prior to the greening of landmasses). Accordingly, we analyse the Mojave River (California), one of the largest watercourses in the Great Basin of the western United States. We integrate discharge records with channel-migration rates derived from dynamic time-warping analysis and chronologically calibrated subsidence rates, thereby constraining the river's formative conditions. Our results reveal a slight downstream decrease in bankfull discharge on the Mojave River, rather than the downstream increase typically exhibited by perennial streams. Yet, the number of days per year during which the channel experiences bankfull or higher stages is roughly maintained along the river's length. Analysis of historical peak flood records suggests that the incidence of channel-formative events responds to modulation in watershed runoff due to the precipitation in the river's headwaters over decades to centuries. Our integrated analysis finally suggests that, while maintaining hydraulic geometries that are fully comparable with many other rivers worldwide, ephemeral desert rivers akin to the Mojave are capable of generating a surprisingly wide range of depositional geometries in the stratigraphic record. (c) 2020 John Wiley & Sons, Ltd.
英文关键词	fluvial Mojave Great Basin migration aggradation ephemeral flood
类型	Article
语种	英语
国家	Canada ; USA ; Italy
收录类别	SCI-E
WOS记录号	WOS:000518369900001
WOS关键词	ORGANIC-CARBON ; GREAT-BASIN ; MIGRATION RATES ; FLOOD DEPOSITS ; RANGE PROVINCE ; STREAM POWER ; POINT-BAR ; SEDIMENT ; MORPHODYNAMICS ; DOWNSTREAM
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314322
作者单位	1.Laurentian Univ, Harquail Sch Earth Sci, Sudbury, ON, Canada; 2.Stanford Univ, Dept Geol Sci, Stanford, CA 94305 USA; 3.Univ Padua, Dept Geosci, Padua, Italy; 4.Ca Foscari Univ Venice, Dept Environm Sci Informat & Stat, Venice, Italy
推荐引用方式 GB/T 7714	Ielpi, Alessandro,Lapotre, Mathieu G. A.,Finotello, Alvise,et al. Channel mobility drives a diverse stratigraphic architecture in the dryland Mojave River (California, USA)[J],2020,45(8):1717-1731.
APA	Ielpi, Alessandro,Lapotre, Mathieu G. A.,Finotello, Alvise,Ghinassi, Massimiliano,D',&Alpaos, Andrea.(2020).Channel mobility drives a diverse stratigraphic architecture in the dryland Mojave River (California, USA).EARTH SURFACE PROCESSES AND LANDFORMS,45(8),1717-1731.
MLA	Ielpi, Alessandro,et al."Channel mobility drives a diverse stratigraphic architecture in the dryland Mojave River (California, USA)".EARTH SURFACE PROCESSES AND LANDFORMS 45.8(2020):1717-1731.