| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1073/pnas.1614941114 |
| Enhanced groundwater recharge rates and altered recharge sensitivity to climate variability through subsurface heterogeneity. | |
| Hartmann A; Gleeson T; Wada Y; Wagener T | |
| 发表日期 | 2017 |
| 出处 | Proceedings of the National Academy of Sciences 114 (11): 2842-2847 |
| 出版年 | 2017 |
| 语种 | 英语 |
| 摘要 | Our environment is heterogeneous. In hydrological sciences, the heterogeneity of subsurface properties, such as hydraulic conductivities or porosities, exerts an important control on water balance. This notably includes groundwater recharge, which is an important variable for efficient and sustainable groundwater resources management. Current large-scale hydrological models do not adequately consider this subsurface heterogeneity. Here we show that regions with strong subsurface heterogeneity have enhanced present and future recharge rates due to a different sensitivity of recharge to climate variability compared with regions with homogeneous subsurface properties. Our study domain comprises the carbonate rock regions of Europe, Northern Africa, and the Middle East, which cover ∼25% of the total land area. We compare the simulations of two large-scale hydrological models, one of them accounting for subsurface heterogeneity. Carbonate rock regions strongly exhibit “karstification,” which is known to produce particularly strong subsurface heterogeneity. Aquifers from these regions contribute up to half of the drinking water supply for some European countries. Our results suggest that water management for these regions cannot rely on most of the presently available projections of groundwater recharge because spatially variable storages and spatial concentration of recharge result in actual recharge rates that are up to four times larger for present conditions and changes up to five times larger for potential future conditions than previously estimated. These differences in recharge rates for strongly heterogeneous regions suggest a need for groundwater management strategies that are adapted to the fast transit of water from the surface to the aquifers. |
| 主题 | Water (WAT) |
| 关键词 | groundwater recharge subsurface heterogeneity water resources climate variability climate change |
| URL | http://pure.iiasa.ac.at/id/eprint/14466/ |
| 来源智库 | International Institute for Applied Systems Analysis (Austria) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/130890 |
| 推荐引用方式 GB/T 7714 | Hartmann A,Gleeson T,Wada Y,et al. Enhanced groundwater recharge rates and altered recharge sensitivity to climate variability through subsurface heterogeneity.. 2017. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 资源类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Enhanced%20groundwat（3466KB） | 智库出版物 | 限制开放 | CC BY-NC-SA | 浏览 | ||
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