Transport in Porous Media

, Volume 4, Issue 3, pp 295–306 | Cite as

The development and influence of gas bubbles in phreatic aquifers under natural flow conditions

  • Daniel Ronen
  • Brian Berkowitz
  • Mordeckai Magaritz


In a phreatic aquifer, bubbles may result from the entrapment of air during groundwater recharge and/or bacterial metabolism. The calculated critical depth of about 1 m at which bubbles are most likely to be found in a granular aquifer, coincides with the depth of 0.60 m of an almost stagnant water layer (specific discharge 1 × 10-6 cm sec-1) found at the water table region under natural flow conditions. Bubbles clog pores and therefore reduce the hydraulic conductivity without significantly reducing the volumetric water content. Stagnation at the water table region results since prevailing pressures (in the order of 10-1 atmospheres) are not sufficiently large to move bubbles through porous media in a water environment.

Key words

Gas/air bubbles phreatic aquifers hydraulic conductivity bacterial activity entrapment 


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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Daniel Ronen
    • 1
    • 2
  • Brian Berkowitz
    • 2
  • Mordeckai Magaritz
    • 1
  1. 1.Isotope DepartmentThe Weizmann Institute of ScienceRehovotIsrael
  2. 2.Research DepartmentHydrological ServiceJerusalemIsrael

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