Quantifying a safe operating space for human use of coastal groundwater under multiple change pressures
(English)Manuscript (preprint) (Other academic)
Climate-change and various other changes occurring in the landscape may lead to critical loss of freshwater on different scales. In the densely populated coastal regions of the world, loss of groundwater by seawater intrusion, which is impacted by the climate, sea-level and landscape changes, may be critical for many people. We here analytically investigate and quantify this criticality in terms of a safe operating space for human use of groundwater in coastal regions. We determine this space, both generally and specifically for two important exploited Mediterranean aquifers, in terms of key natural and management limits for human use of coastal groundwater in order to avoid critical loss of this resource by seawater intrusion. The quantification framework is simple, yet general and applicable across different scales and regions, for historic, current and projected future conditions of changing hydro-climate, sea level and freshwater use and demand.
seawater intrusion, coastal aquifer, safe operating space, groundwater pumping, Mediterranean aquifers
Oceanography, Hydrology, Water Resources Environmental Sciences
Research subject Physical Geography
IdentifiersURN: urn:nbn:se:su:diva-103170OAI: oai:DiVA.org:su-103170DiVA: diva2:716058