FIELD-SCALE TRANSPORT FROM A BURIED LINE SOURCE IN VARIABLY SATURATED SOIL

被引:56
|
作者
WILSON, GV [1 ]
JARDINE, PM [1 ]
ODELL, JD [1 ]
COLLINEAU, M [1 ]
机构
[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37831
关键词
D O I
10.1016/0022-1694(93)90221-T
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Lateral subsurface flow through the upper soil layers (stormflow zone) during storm events has been shown to be a dominant mechanism of contaminant transport in forested watersheds. Data bases for multi-region flow and transport modeling for hydrogeologic conditions where stormflow predominates are lacking. Direct measurement of the tracer flux under field-scale conditions are non-existent. The objective of this paper was to evaluate the significance of three hydrologic pore regions to stormflow. Two tracer releases were made from a buried line source during storm events and the spatial and temporal variability in solute concentration and the tracer fluxes were measured. During one of the injections, macropore flow was extremely rapid with solute transport to a downslope trench 65 m from the line source taking just 3.2 h. Mesopore flow appeared to be significant for short distances in that tracer movement to solution samplers just 3 m downslope of the line source occurred within 3 h of the release. Soil sampling 6 months after the second release revealed that the tracer plume was refracted in the direction of the fractured bedding plane, and therefore did not coincide with the array of samplers for distances greater than 13 m downslope of the source. Soil sampling data suggested that micropores served as a sink/source for Br- with 47% of the non-reactive tracer remaining immobilized by micropores at the termination of the study. Interaction between the upper 2 m of the stormflow zone and the groundwater system was believed minimal: however, lateral flow below 2 m was concluded to be significant.
引用
收藏
页码:83 / 109
页数:27
相关论文
共 50 条
  • [1] FIELD-SCALE SOLUTE TRANSPORT IN A HEAVY CLAY SOIL
    BRONSWIJK, JJB
    HAMMINGA, W
    OOSTINDIE, K
    WATER RESOURCES RESEARCH, 1995, 31 (03) : 517 - 526
  • [2] Field-scale Cadmium Transport in a Heterogeneous Layered Soil
    P. Seuntjens
    Water, Air, and Soil Pollution, 2002, 140 : 401 - 423
  • [3] Field-scale cadmium transport in a heterogeneous layered soil
    Seuntjens, P
    WATER AIR AND SOIL POLLUTION, 2002, 140 (1-4): : 401 - 423
  • [4] Chromate Transport and Retention in Variably Saturated Soil Columns
    Hutchison, J. M.
    Seaman, J. C.
    Aburime, S. A.
    Radcliffe, D. E.
    VADOSE ZONE JOURNAL, 2003, 2 (04): : 702 - 714
  • [6] Investigation of spatial and temporal variability of saturated soil hydraulic conductivity at the field-scale
    Rienzner, Michele
    Gandolfi, Claudio
    SOIL & TILLAGE RESEARCH, 2014, 135 : 28 - 40
  • [7] SOIL STERILIZATION ON A FIELD-SCALE
    SMART, AB
    NATURE, 1947, 159 (4029) : 102 - 102
  • [8] Impact of observation thresholds in the assessment of field-scale soil saturated hydraulic conductivity
    Goyal, Abhishek
    Flammini, Alessia
    Morbidelli, Renato
    Corradini, Corrado
    Govindaraju, Rao S.
    JOURNAL OF HYDROLOGY, 2023, 626
  • [9] Estimation of Field-Scale Variability in Soil Saturated Hydraulic Conductivity From Rainfall-Runoff experiments
    Goyal, Abhishek
    Morbidelli, Renato
    Flammini, Alessia
    Corradini, Corrado
    Govindaraju, Rao S.
    WATER RESOURCES RESEARCH, 2019, 55 (09) : 7902 - 7915
  • [10] Evaluation of multidimensional transport through a field-scale compacted soil liner
    Willingham, TW
    Werth, CJ
    Valocchi, AJ
    Krapac, IG
    Toupiol, C
    Stark, TD
    Daniel, DE
    JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING, 2004, 130 (09) : 887 - 895