Dryland hydrology in Mediterranean regions—a review

Cudennec, Christophe; Leduc, Christian; Koutsoyiannis, Demetris

doi:10.1623/hysj.52.6.1077

Cited by 175 publications

(81 citation statements)

References 100 publications

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“…Cudennec et al, 2007), are primarily caused by increased irrigation demand, by related landuse changes and agricultural practices (including use of fertilizers and pesticides), by polluting streams and aquifers as a result of urban activities, and by perturbing the natural water balance through overexploitation of groundwater, resulting in a dramatic lowering of water tables and, in coastal areas, salt water intrusion.…”

Section: Seeking the Real Causes Of Problemsmentioning

confidence: 99%

Climate, hydrology and freshwater: towards an interactive incorporation of hydrological experience into climate research

Koutsoyiannis

Montanari

Lins

et al. 2009

Hydrological Sciences Journal

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Section: Seeking the Real Causes Of Problemsmentioning

confidence: 99%

Climate, hydrology and freshwater: towards an interactive incorporation of hydrological experience into climate research

Koutsoyiannis

Montanari

Lins

et al. 2009

Hydrological Sciences Journal

Self Cite

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“…Water resources are also affected by successive droughts. Several very dry years in sequence are often observed in the Mediterranean region (Cudennec et al, 2007), and their frequency could increase due to climate change (Ceballos-Barbancho et al, 2008). In these regions, mountains may obviously play an important role in the regional water balance (Pitlick 1994;Flerchinger & Cooley, 2000;Khazaei et al, 2003;Viviroli et al, 2003), but the contribution of snow and rain to the annual and multi-annual water balance is still largely unknown.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the Snowmelt Runoff Model in the Moroccan High Atlas Mountains using two snow-cover estimates

Boudhar

Hanich

Boulet

et al. 2009

Hydrological Sciences Journal

106

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In the centre of Morocco, the High Atlas mountain range represents the most important water storage for the neighbouring arid plains through liquid and solid precipitation. In this context, we evaluated the performance of the Snowmelt Runoff Model (SRM) on the five main tributary watersheds of the High Atlas range. Due to the very low density of climate stations in the High Atlas, snowfall and snowmelt processes are difficult to monitor using meteorological data alone. In order to compensate for the lack of in situ data, snow maps are also derived from remotely-sensed data. We compared the streamflow forecasting performance when the model is driven by one or the other estimate of snow-covered area. Both estimates are generally comparable in all watersheds, and satisfactory streamflow simulations were obtained at seasonal time scales using both snow-cover products. However, significant differences can be observed for selected storms, with more accurate streamflow predictions being obtained when the remotely-sensed data are used. Evaluation du Modèle Snowmelt Runoff dans le Haut Atlas Marocain en utilisant deux estimations des surfaces enneigéesRésumé Au centre du Maroc, la chaîne montagneuse du Haut Atlas constitue un véritable château d'eau pour les plaines arides avoisinantes, et ce grâce aux précipitations liquides et solides. Dans ce contexte, nous avons évalué les performances du modèle Snowmelt Runoff (SRM) dans les cinq principaux sous-bassins versants du Haut Atlas. En raison de la très faible densité des stations climatiques dans le Haut Atlas, les processus de chute et de fonte des neiges sont difficiles à contrôler avec des données météorologiques seules. Afin de compenser l'absence de données in situ, des cartes d'enneigement sont également dérivées de données issues de la télédétection. Nous avons comparé les performances de SRM pour la prévision de l'écoulement en cours d'eau à partir des deux types de carte. Les surfaces enneigées déduites par ces deux méthodes sont généralement comparables dans tous les sous-bassins versants, et des simulations d'écoulement satisfaisantes ont été obtenues à l'échelle saisonnière à partir des deux estimations de surface de neige. En revanche, des différences significatives peuvent être observées pour certains événements avec des prévisions d'écoulement plus précises lorsque les données issues de la télédétection sont utilisées.

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“…Published geological information, including interpreted elevation top of aquifers and aquitards, as well as aquifer isopachs (Sampson et al 2012a(Sampson et al , b, 2015 and fault locations (Ambrose and Flint 1980;Cowley and Martin 1991;Drexel and Preiss 1995), were used to identify zones that may potentially be associated with enhanced vertical permeability. Where the thickness of the aquitard is lower, resistance to vertical flow Fig.…”

Section: Methodsmentioning

confidence: 99%

Detecting inter-aquifer leakage in areas with limited data using hydraulics and multiple environmental tracers, including 4He, 36Cl/Cl, 14C and 87Sr/86Sr

et al. 2017

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The investigation of regionally extensive groundwater systems in remote areas is hindered by a shortage of data due to a sparse observation network, which limits our understanding of the hydrogeological processes in arid regions. The study used a multidisciplinary approach to determine hydraulic connectivity between the Great Artesian Basin (GAB) and the underlying Arckaringa Basin in the desert region of Central Australia. In order to manage the impacts of groundwater abstraction from the Arckaringa Basin, it is vital to understand its connectivity with the GAB (upper aquifer), as the latter supports local pastoral stations and groundwaterdependent springs with unique endemic flora and fauna. The study is based on the collation of available geological information, a detailed analysis of hydraulic data, and data on environmental tracers. Enhanced inter-aquifer leakage in the centre of the study area was identified, as well as recharge to the GAB from ephemeral rivers and waterholes. Throughout the rest of the study area, inter-aquifer leakage is likely controlled by diffuse inter-aquifer leakage, but the coarse spatial resolution means that the presence of additional enhanced inter-aquifer leakage sites cannot be excluded. This study makes the case that a multi-tracer approach along with groundwater hydraulics and geology provides a tool-set to investigate enhanced inter-aquifer leakage even in a groundwater basin with a paucity of data. A particular problem encountered in this study was the ambiguous interpretation of different age tracers, which is attributed to diffusive transport across flow paths caused by low recharge rates.

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Dryland hydrology in Mediterranean regions—a review

Cited by 175 publications

References 100 publications

Climate, hydrology and freshwater: towards an interactive incorporation of hydrological experience into climate research

Climate, hydrology and freshwater: towards an interactive incorporation of hydrological experience into climate research

Evaluation of the Snowmelt Runoff Model in the Moroccan High Atlas Mountains using two snow-cover estimates

Detecting inter-aquifer leakage in areas with limited data using hydraulics and multiple environmental tracers, including 4He, 36Cl/Cl, 14C and 87Sr/86Sr

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