Academic Education
| B.Sc. |
1974 |
Hebrew University of Jerusalem (HUJ), Israel. Geography, Geology and Climatology |
| M.Sc. |
1979 |
HUJ, Israel. hysical Geography and Hydrology
Title of thesis: Processes of Infiltration and Possible Recharge Along Ephemeral Streams in the Negev Highlands |
| Ph.D. |
1984 |
University of Arizona, Tucson, Arizona, USA. Major in Hydrology and Minor in Soil Water Engineering
Title of thesis: Quantification of Aquifer Recharge Distribution Using Environmental Isotopes and Regional Hydrochemistry |
Research Interests
 The main research activities are associated with quantitative assessment of groundwater flow systems and sources of recharge in complex arid basins with puzzling geology and scarce hydrological information. Adar developed the Mixing Cell Model (MCM) approach utilizing hydrochemistry and environmental isotopes coupled with a flow model. The MCMsf model for a steady flow system based on quadratic programming has been further developed into a user-friendly code for the definition of groundwater flow patterns in multiple-aquifer flow systems by environmental tracers. The model has been applied in several hydrological basins worldwide, from the Kalahari Desert (Namibia), Jezreel and Bessor basins (Israel), to the Ili basin in Kazakhstan. A novel MCM approach based on linear programming was developed for transient flow systems. The MCusfr model was applied in the Arava aquifer of Jordan and Israel in order to define the transient groundwater flow system and the relative groundwater contribution from Jordanian and Israeli sources.
Among other research activities, are the initiation and/or involvement in the investigation of (1) the role of water reservoirs and shallow groundwater on top-soil salinization in the Jezreel Valley; (2) the effects of forestation over sand-dune terrain on local groundwater reservoirs; (3) the dynamics of flow and pollutant transport in a fractured chalk aquitard (low permeable yet fractured formation) in the vicinity of the Ramat Hovav Industrial Park; (4) identification and quantification of pollutant sources into ephemeral rivers from various basins with different anthropogenic activities; (5) the effect of industrial effluents on the hydraulic properties of a fractured chalk aquitard; (6) identification of irregular salinization processes in the Coastal Aquifer of Israel; (7) salinization and deterioration of topsoil water quality due to anthropogenic activities; (8) soil and groundwater contamination in the coastal aquifer of Israel (Ramat Hasharon area) by organic industrial pollutants and (9) hydrological aspects of management and policy associated with transboundary water resources.
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