干旱区生态环境知识资源中心(Arid): Reinterpreting Models of Slope-Front Recharge in a Desert Basin

Arid

DOI	10.3390/geosciences10080297
	Reinterpreting Models of Slope-Front Recharge in a Desert Basin
	Hibbs, Barry J.; Merino, Mercedes
通讯作者	Hibbs, BJ
来源期刊	GEOSCIENCES
EISSN	2076-3263
出版年	2020
卷号	10 期号:8
英文摘要	Identification of recharge areas in arid basins is challenging due to spatial and temporal variability and complexity of the hydrogeology. This study re-evaluates recharge mechanism in a desert basin where isotopic and geologic data indicated that published conceptual models of recharge are not accurate. A new model of recharge is formulated that is consistent with the unique geologic framework in the basin. In the area of study, the Rio Grande flows across a broad alluvial floodplain, the "El Paso-Juarez Valley", where the river has incised the surface of the Hueco Bolson. The modern Rio Grande floodplain overlies the older basin fill, or "Hueco Bolson deposits", in the valley portion of the area. The lateral contact between the older bolson deposits and the recent alluvial floodplain deposits defines the "slope front". The valley wall along the slope front is penetrated by many arroyos that incise the Hueco Bolson deposits and modern floodplain surface. The presence of a large lens of freshwater at the boundary between the older bolson fill and recent Rio Grande alluvium seemed to suggest to previous researchers that dilute water developed due to runoff drawn in by San Felipe Arroyo, a prominent arroyo at the slope front between the older Hueco Bolson deposits and the recent Rio Grande alluvium. Our follow-up verification work illustrates that this is demonstrably not the case. The testing of groundwater samples for stable water isotopes and radioisotopes showed that the deeper and more dilute waters near San Felipe Arroyo are actually pre-dam waters recharged from the shifting Rio Grande channel.
英文关键词	isotope hydrology groundwater recharge arid zones cross-formational flow
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000576965000001
WOS关键词	HUECO-BOLSON AQUIFER ; GROUNDWATER RECHARGE ; RIO-GRANDE ; LAND-USE ; EL-PASO ; TEXAS ; USA ; SALINIZATION ; INFILTRATION ; IMPACTS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334658
作者单位	[Hibbs, Barry J.; Merino, Mercedes] Calif State Univ Los Angeles, Dept Geosci, 5151 State Univ Dr, Los Angeles, CA 90032 USA
推荐引用方式 GB/T 7714	Hibbs, Barry J.,Merino, Mercedes. Reinterpreting Models of Slope-Front Recharge in a Desert Basin[J],2020,10(8).
APA	Hibbs, Barry J.,&Merino, Mercedes.(2020).Reinterpreting Models of Slope-Front Recharge in a Desert Basin.GEOSCIENCES,10(8).
MLA	Hibbs, Barry J.,et al."Reinterpreting Models of Slope-Front Recharge in a Desert Basin".GEOSCIENCES 10.8(2020).