Groundwater deeper than 500 m contributes less than 0.1% of global river discharge
Groundwater deeper than 500 m contributes less than 0.1% of global river discharge
复制标题
地下水%20更深%20比%20500米%20贡献%20少%20比%200.1%%20of%20全球%20河流%20排放
DOI:
10.1038/s43247-023-00697-6
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发表时间:
2023
影响因子:
7.9
通讯作者:
McDonnell, Jeffrey J.
中科院分区:
文献类型:
--
作者:
Ferguson, Grant;McIntosh, Jennifer C.;Jasechko, Scott;Kim, Ji-Hyun;Famiglietti, James S.;McDonnell, Jeffrey J.
Groundwater is one of the largest reservoirs of water on Earth but has relatively small fluxes compared to its volume. This behavior is exaggerated at depths below 500 m, where the majority of groundwater exists and where residence times of millions to even a billion years have been documented. However, the extent of interactions between deep groundwater (>500 m) and the rest of the terrestrial water cycle at a global scale are unclear because of challenges in detecting their contributions to streamflow. Here, we use a chloride mass balance approach to quantify the contribution of deep groundwater to global streamflow. Deep groundwater likely contributes <0.1% to global streamflow and is only weakly and sporadically connected to the rest of the water cycle on geological timescales. Despite this weak connection to streamflow, we found that deep groundwaters are important to the global chloride cycle, providing ~7% of the flux of chloride to the ocean.
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影响因子:
16.6
作者:
Hare DK;Helton AM;Johnson ZC;Lane JW;Briggs MA
通讯作者:
Briggs MA
影响因子:
5.2
作者:
G. Ferguson;J. McIntosh;S. Grasby;M. Hendry;S. Jasechko;M. Lindsay;E. Luijendijk
通讯作者:
E. Luijendijk
影响因子:
3.4
作者:
Anita Gue;B. Mayer;S. Grasby
通讯作者:
Anita Gue;B. Mayer;S. Grasby
DOI:
--
发表时间:
1973
期刊:
影响因子:
--
作者:
G. O. Bachman;Ross Johnson
通讯作者:
Ross Johnson
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Riikka Kietäväinen
通讯作者:
Riikka Kietäväinen