INCITAP   20787
INSTITUTO DE CIENCIAS DE LA TIERRA Y AMBIENTALES DE LA PAMPA
Unidad Ejecutora - UE
artículos
Título:
Groundwater and surface water body dynamics in a flat, sedimentary grassland
Autor/es:
ARAGÓN, R.; JOBBÁGY, E.G.; VIGLIZZO. E,F,
Revista:
ECOHYDROLOGY
Editorial:
JOHN WILEY & SONS INC
Referencias:
Año: 2011 vol. 4 p. 433 - 447
ISSN:
1936-0584
Resumen:
Sedimentary plains with extremely flat topography, such as the Pampas in Argentina, often display floodingdrought cycles.
Changes in water table depth and surface water coverage affect natural and cultivated vegetation, wildlife, and people.
Here, we describe groundwater dynamics and water-body expansion in a 10-year flooding cycle in the valuable agricultural
lands of Western Pampas. We analysed water-table depth, surface water coverage, and rainfall from 1996 to 2005 covering
¾28 000 km2. We characterized the dynamics of water storage based on groundwater observations and remote sensing estimates
of the coverage (LANDSAT) and elevation (ENVISAT) of water bodies as well as water storage anomalies captured by the
gravity recovery and climate experiment (GRACE). Surface water coverage fluctuated from 3 to 28% and groundwater levels
displayed a ¾2Ð5 m change. Regional water storage raised by ¾800 mm with 63% of this water accretion accounted by
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
of the coverage (LANDSAT) and elevation (ENVISAT) of water bodies as well as water storage anomalies captured by the
gravity recovery and climate experiment (GRACE). Surface water coverage fluctuated from 3 to 28% and groundwater levels
displayed a ¾2Ð5 m change. Regional water storage raised by ¾800 mm with 63% of this water accretion accounted by
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
28 000 km2. We characterized the dynamics of water storage based on groundwater observations and remote sensing estimates
of the coverage (LANDSAT) and elevation (ENVISAT) of water bodies as well as water storage anomalies captured by the
gravity recovery and climate experiment (GRACE). Surface water coverage fluctuated from 3 to 28% and groundwater levels
displayed a ¾2Ð5 m change. Regional water storage raised by ¾800 mm with 63% of this water accretion accounted by
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
¾2Ð5 m change. Regional water storage raised by ¾800 mm with 63% of this water accretion accounted by
groundwater. Ground and surface water dynamics were closely coupled but this link differed between lowlands and highlands
and depending on whether the system was at the gaining or retraction stage. This asymmetrical behaviour was likely caused by
shifts in regional connectivity. Regional surface C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.
C groundwater storage compared well with water storage anomalies obtained
from GRACE, suggesting that this tool may represent a methodological shortcut to estimate water storage changes. The tight
connection between ground and surface water, and the relatively slow process of cumulative water accretion and coalescence
of water bodies that precedes flood events offer the opportunity of developing warning systems that could help land managers
to adapt to climate changes.