Abstract. Fluid flow and solute transport within the vadose zone, the unsaturated zone between the land surface and the water table, can be the cause of expanded plumes arising from localized contaminant sources. Washington, DC: …

To explore this possibility in semiarid plains of Vadose Zone zVadose zone contains a three-phase system … An understanding of vadose zone processes is, therefore, an essential prerequisite for cost-effective contaminant remediation efforts. conceptual models and develop numerical models of flow and transport in Hanford’s vadose zone. E. G. Jobbágy. Transport of NAPLs in Vadose Zone National Chiao Tung University Hsin-yu Shan. Conditions under which these mechanisms are active in the field and the extent to which they contribute to transport through the vadose zone are largely unknown, making it impossible to accurately predict the post-leak distribution of these fluids in the field. From FY 2000 through FY 2003, a series of vadose zone transport field experiments were conducted as part of the U.S. Department of Energy’s Groundwater/Vadose Zone Integration Project Science and Technology Project, now known as the Remediation and Closure Science Project, and managed by the Pacific Northwest National Laboratory (PNNL). Results from the field studies and associated analysis have appeared in more than 46 publications generated over the past 4 years. Grupo de Estudios Ambientales, IMASL, Universidad Nacional de San Luis/CONICET, San Luis, Argentina . NAPL zLiquids that are immiscible with water Æ nonaqueous phase liquids (NAPL) zNAPLs that have densities that are greater than water ÆDNAPL (dense NAPL) zNAPLs that have densities that are less than water ÆLNAPL (light NAPL) Vadose Zone Vadose Zone. Search for more papers by this author. Their cultivation has often led to drainage of water below root zone, displacement of solutes, and rising water tables, affecting, in most extreme cases, long-term viability of agriculture. comparison of nine vadose-zone characterization methods: advanced tensiometers, neutron probe, electrical resistance tomography (ERT), high-resolution resistivity (HRR), electromagnetic induction imaging (EMI), cross-borehole radar (XBR), and cross-borehole seismic (XBS). Washington, DC: The National Academies Press. E-mail address: jobbagy@unsl.edu.ar. Vadose zone transport in dry forests of central Argentina: Role of land use. Most sedimentary plains occupied by semiarid woody ecosystems have low groundwater recharge rates and high vadose zone salt accumulation. Grupo de Estudios Ambientales, IMASL, Universidad Nacional de San Luis/CONICET, San Luis, Argentina. doi: 10.17226/10102. C. S. Santoni. Conceptual Models of Flow and Transport in the Fractured Vadose Zone. The Pajarito Plateau in northern New Mexico, on which the Los Alamos National Laboratory is situated, is characterized by a thick vadose zone overlying the regional aquifer of the western Espanola Basin. These publications include test plans and status reports in addition to numerous technical notes and papers.