Vadose zone

{
  "id": "MLC-T-ENV-029453",
  "term": "Vadose zone",
  "field": "Environment",
  "term_source": "Vadose Zone",
  "definition": "1. The zone between land surface and the water table within which the moisture content is less than saturation (except in the capillary fringe) and pressure is less than atmospheric. Soil pore spaces also typically contain air or other gases. The capillary fringe is included in the vadose zone.\n\n2. The vadose zone is the area between the surface of the land and the surface of the water table in which the moisture content is less than the saturation point and the pressure is less than atmospheric. The openings (pore spaces) also typically contain air or other gases.\n\n3. The zone between land surface and the water table within which the moisture content is less than saturation (except in the capillary fringe) and pressure is less than atmospheric. Soil pore space also typically contains air or other gases. The capillary fringe is included in the vadose zone.",
  "subject": "Land, waste and cleanup",
  "references": [
    "Underground Storage Tank Sites Guide Glossary; Office of Underground Storage Tanks Technical Terms; Glossary of Technical Terms: Office of Underground Storage Tanks",
    "Waste and Cleanup Risk Assessment Glossary",
    "Terms of Environment; EPA Draft Plan to Study the Potential Impacts of Hydraulic Fracturing on Drinking Water Resources: Glossary; Federal Remediation Technologies Roundtable Glossary"
  ],
  "url": "https://mlchart.com/terminology/environment/vadose-zone/"
}