期刊
GEOPHYSICAL RESEARCH LETTERS
卷 43, 期 5, 页码 1980-1987出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2016GL067927
关键词
hydrology; flow regime; resilience; groundwater; catchment; aquifer
Terrestrial water storage is the primary source of river flow. We introduce storage sensitivity of streamflow (E-S), which for a given flow rate indicates the relative change in streamflow per change in catchment water storage. E-S can be directly derived from streamflow observations. Analysis of 725 catchments in Europe reveals that E-S is high in, e.g., parts of Spain, England, Germany, and Denmark, whereas flow regimes in parts of the Alps are more resilient (that is, less sensitive) to storage changes. A regional comparison of E-S with observations indicates that E-S is significantly correlated with variability of low (R-2=0.41), median (R-2=0.27), and high flow conditions (R-2=0.35). Streamflow sensitivity provides new guidance for a changing hydrosphere where groundwater abstraction and climatic changes are altering water storage and flow regimes.
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