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Rapid groundwater decline and some cases of recovery in aquifers globally.
Jasechko, Scott; Seybold, Hansjörg; Perrone, Debra; Fan, Ying; Shamsudduha, Mohammad; Taylor, Richard G; Fallatah, Othman; Kirchner, James W.
Afiliación
  • Jasechko S; Bren School of Environmental Science & Management, University of California, Santa Barbara, Santa Barbara, CA, USA. jasechko@ucsb.edu.
  • Seybold H; Department of Environmental Systems Sciences, ETH Zürich, Zürich, Switzerland.
  • Perrone D; Environmental Studies Program, University of California, Santa Barbara, Santa Barbara, CA, USA.
  • Fan Y; Department of Earth and Planetary Sciences, Rutgers University, New Brunswick, NJ, USA.
  • Shamsudduha M; Institute for Risk and Disaster Reduction, University College London, London, UK.
  • Taylor RG; Department of Geography, University College London, London, UK.
  • Fallatah O; Department of Nuclear Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia.
  • Kirchner JW; Center for Training and Radiation Protection, Faculty of Engineering, King Abdulaziz University, Jeddah, Saudi Arabia.
Nature ; 625(7996): 715-721, 2024 Jan.
Article en En | MEDLINE | ID: mdl-38267682
ABSTRACT
Groundwater resources are vital to ecosystems and livelihoods. Excessive groundwater withdrawals can cause groundwater levels to decline1-10, resulting in seawater intrusion11, land subsidence12,13, streamflow depletion14-16 and wells running dry17. However, the global pace and prevalence of local groundwater declines are poorly constrained, because in situ groundwater levels have not been synthesized at the global scale. Here we analyse in situ groundwater-level trends for 170,000 monitoring wells and 1,693 aquifer systems in countries that encompass approximately 75% of global groundwater withdrawals18. We show that rapid groundwater-level declines (>0.5 m year-1) are widespread in the twenty-first century, especially in dry regions with extensive croplands. Critically, we also show that groundwater-level declines have accelerated over the past four decades in 30% of the world's regional aquifers. This widespread acceleration in groundwater-level deepening highlights an urgent need for more effective measures to address groundwater depletion. Our analysis also reveals specific cases in which depletion trends have reversed following policy changes, managed aquifer recharge and surface-water diversions, demonstrating the potential for depleted aquifer systems to recover.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Agua Subterránea Tipo de estudio: Risk_factors_studies Idioma: En Revista: Nature Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Agua Subterránea Tipo de estudio: Risk_factors_studies Idioma: En Revista: Nature Año: 2024 Tipo del documento: Article País de afiliación: Estados Unidos