Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment
Distinct stores and the routing of water in the deep critical zone of a snow-dominated volcanic catchment
复制标题
以积雪为主的火山流域深处关键区域的独特水源和水流路径
DOI：
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Alissa White
中科院分区：
文献类型：
--
作者：
Alissa White
抽象。这项研究结合了主要的离子和同位素化学，年龄示踪剂，
裂缝密度特征和物理水文测量，
了解临界区（CZ）的结构如何影响其
功能，包括水路由，存储，平均水停留时间，
水文响应在高海拔流纹岩凝灰岩集水区，
Jemez River Basin Critical Zone Observatory（JRB-CZO）
火山口国家保护区（VCNP），位于北方新墨西哥州，是一个周期性降水区
模式在春季融雪期间产生不同的水文流动状态，
夏季季风雨和秋季风暴。水文、地球化学和同位素
分析来自不同储存的地表水和地下水，
浅层地下水可能是固结的
塌陷角砾岩和深层地下水在破碎凝灰岩含水层系统中，
使我们能够解开这些地下水储存的相互作用，
它们对1个完整水年（WY）径流量的贡献。尽管由于水的季节性差异，
分区，主要离子化学表明，深层地下水从
高度断裂的场地更能代表地下水，
整个水年的流量。此外，比较
径流和地下水过程线表明水力连接
断裂焊接凝灰岩含水层系统和径流之间，而
塌陷角砾岩存款内的浅层含水层则不具有这种特征
连接.此外，还对水的年龄示踪物和氧（δ 18 O）、稳定氢（δ 2 H）同位素进行了分析
表明地下水是现代和古老沃茨的混合物
来自融雪，井下中子探测器调查表明，水的移动
通过垂直渗透和地下侧向渗透
流量，具体取决于岩性。我们发现，在复杂的地质地形，
的JRB-CZO，在两个山坡内的CZ架构的差异
一个源头集水区控制水存储和路由通过
地下，并表明浅层地下水没有贡献
大幅度增加，而深层断裂含水层系统有助于
大部分是溪流。
Abstract. 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.
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影响因子：
3.1
作者：
D. Healy;R. Rizzo;D. Cornwell;N. Farrell;Hannah Watkins;N. Timms;E. Gomez‐Rivas;Michael C. Smith-Michael-C.-Sm
通讯作者：
D. Healy;R. Rizzo;D. Cornwell;N. Farrell;Hannah Watkins;N. Timms;E. Gomez‐Rivas;Michael C. Smith-Michael-C.-Sm
影响因子：
18.3
作者：
Jasechko, Scott;Perrone, Debra;Kirchner, James W.
通讯作者：
Kirchner, James W.
DOI：
10.1073/pnas.1800141115
发表时间：
2018-02
期刊：
Proceedings of the National Academy of Sciences
影响因子：
--
作者：
D. Rempe;W. Dietrich
通讯作者：
D. Rempe;W. Dietrich
影响因子：
5
作者：
Hyojin Kim;J. Bishop;W. Dietrich;I. Fung
通讯作者：
Hyojin Kim;J. Bishop;W. Dietrich;I. Fung