Field-scale in situ measurements of vadose zone flow and transport using multiple tracers at INEEL Vadose Zone Research Park (VZRP) - EMSP5-02-06

Roback, Robert C.

Los Alamos National Laboratory

关键词: Solutes;    Ponds;    Saturation;    Rivers;    Water Chemistry;   

DOI  :  10.2172/838678
RP-ID  :  EMSP-86679--2004b
RP-ID  :  838678

美国|英语

来源: UNT Digital Library

【 摘 要 】

This study is aimed at obtaining a better understanding of vadose zone flow and transport processes at the field scale and establishing defensible links between laboratory- and field-derived transport parameters for conservative and reactive elements in the vadose zone. The study site (Vadose Zone Research Park [VZRP] at INEEL) provides a three-dimensional instrumentation array strategically surrounding a new infiltration pond slated for initial use in the upcoming year, and the Big Lost River, and intermittent stream proximal to the infiltration ponds. The proposed research will utilize the infiltration ponds and the Big Lost River to study the effects of fluid flux, water chemistry and degree of saturation on contaminant transport in the vadose zone. Our research plan has four major objectives: (1) determine the transport of conservative and reactive solute and colloid tracers through the vadose zone and local perched water zones; (2) examine isotopic variations of U and Sr a nd compare these to introduced sorbing and non-sorbing tracers; (3) develop and calibrate a conceptual flow and transport model, and (4) examine the effects of flow and geochemical transients on tracer transport.