气候变化领域集成服务门户(CCPortal): Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment

CCPortal

DOI	10.5194/hess-23-4661-2019
	Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment
	White A.; Moravec B.; McIntosh J.; Olshansky Y.; Paras B.; Andres Sanchez R.; P A Ferré T.; Meixner T.; Chorover J.
发表日期	2019
ISSN	1027-5606
起始页码	4661
结束页码	4683
卷号	23 期号:11
英文摘要	This study combines major ion and isotope chemistry, age tracers, fracture density characterizations, and physical hydrology measurements to understand how the structure of the critical zone (CZ) influences its function, including water routing, storage, mean water residence times, and hydrologic response. In a high elevation rhyolitic tuff catchment in the Jemez River Basin Critical Zone Observatory (JRB-CZO) within the Valles Caldera National Preserve (VCNP) of northern New Mexico, a periodic precipitation pattern creates different hydrologic flow regimes during spring snowmelt, summer monsoon rain, and fall storms. Hydrometric, geochemical, and isotopic analyses of surface water and groundwater from distinct stores, most notably shallow groundwater that is likely a perched aquifer in consolidated collapse breccia and deeper groundwater in a fractured tuff aquifer system, enabled us to untangle the interactions of these groundwater stores and their contribution to streamflow across 1 complete water year (WY). Despite seasonal differences in groundwater response due to water partitioning, major ion chemistry indicates that deep groundwater from the highly fractured site is more representative of groundwater contributing to streamflow across the entire water year. Additionally, the comparison of streamflow and groundwater hydrographs indicates a hydraulic connection between the fractured welded tuff aquifer system and streamflow, while the shallow aquifer within the collapse breccia deposit does not show this same connection. Furthermore, analysis of age tracers and oxygen (δ18O) and stable hydrogen (δ2H) isotopes of water indicates that groundwater is a mix of modern and older waters recharged from snowmelt, and downhole neutron probe surveys suggest that water moves through the vadose zone both by vertical infiltration and subsurface lateral flow, depending on the lithology. We find that in complex geologic terrain like that of the JRB-CZO, differences in the CZ architecture of two hillslopes within a headwater catchment control water stores and routing through the subsurface and suggest that shallow groundwater does not contribute significantly to streams, while deep fractured aquifer systems contribute most to streamflow. © 2019 BMJ Publishing Group. All rights reserved.
语种	英语
scopus关键词	Aquifers; Catchments; Fracture; Groundwater resources; Hydrochemistry; Isotopes; Lithology; Rain; Rocks; Runoff; Snow melting systems; Stream flow; Headwater catchment; Hydraulic connection; Major ion chemistry; Periodic precipitations; Seasonal differences; Subsurface lateral flows; Surface water and groundwaters; Vertical infiltration; Infiltration; aquifer; catchment; groundwater-surface water interaction; hydrochemistry; infiltration; precipitation (chemistry); streamflow; streamwater; surface water; Jemez Basin; New Mexico; United States; Valles Caldera National Preserve
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159566
作者单位	White, A., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Moravec, B., Department of Soil, Water and Environmental Sciences, University of Arizona, Tucson, AZ 85721, United States; McIntosh, J., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Olshansky, Y., Department of Soil, Water and Environmental Sciences, University of Arizona, Tucson, AZ 85721, United States; Paras, B., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Andres Sanchez, R., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; P A Ferré, T., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Meixner, T., Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ 85721, United States; Chorover, J., Department of Soil, Water and ...
推荐引用方式 GB/T 7714	White A.,Moravec B.,McIntosh J.,et al. Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment[J],2019,23(11).
APA	White A..,Moravec B..,McIntosh J..,Olshansky Y..,Paras B..,...&Chorover J..(2019).Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment.Hydrology and Earth System Sciences,23(11).
MLA	White A.,et al."Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment".Hydrology and Earth System Sciences 23.11(2019).