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Title: Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations

Abstract

In the Hanford Reach of the Columbia River, a thin layer of recent alluvium overlies the sedimentary formations that comprise the unconfined groundwater aquifer. Experimental and modeling studies have demonstrated that this alluvial layer exerts significant control on the exchange of groundwater and surface water (hydrologic exchange flux), and is associated with elevated levels of biogeochemical activity. This layer is also observed to be strongly heterogeneous, and quantifying the spatial distribution of properties over the range of scales of interest is challenging. Facies are elements of a sediment classification scheme that groups complex geologic materials into a set of discrete classes according to distinguishing features. Facies classifications have been used as a framework for assigning heterogeneous material properties to grid cells of numerical models of flow and reactive transport in subsurface media. The usefulness of such an approach hinges on being able to relate facies to quantitative properties needed for flow and reactive transport modeling, and on being able to map facies over the domain of interest using readily available information. While aquifer facies have been used in various modeling contexts, application of this concept to riverbed sediments is relatively new. Here we describe an approach for categorizing and mappingmore » recent alluvial (riverbed) sediments based on the integration of diverse observations with numerical simulations of river hydrodynamics. The facies have distinct distributions of sediment texture which correspond to variations in hydraulic properties, and therefore provide a useful framework for assigning heterogeneous properties in numerical simulations of hydrologic exchange flows and biogeochemical processes.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1];  [2]; ORCiD logo [1]
  1. BATTELLE (PACIFIC NW LAB)
  2. CH2M HILL PLATEAU REMEDIATION COMPANY
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1530592
Report Number(s):
PNNL-SA-123667
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Hydrological Processes
Additional Journal Information:
Journal Volume: 33; Journal Issue: 8
Country of Publication:
United States
Language:
English

Citation Formats

Hou, Zhangshuan, Scheibe, Timothy D., Murray, Christopher J., Perkins, William A., Arntzen, Evan V., Ren, Huiying, Mackley, Robert D., and Richmond, Marshall C. Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations. United States: N. p., 2019. Web. doi:10.1002/hyp.13396.
Hou, Zhangshuan, Scheibe, Timothy D., Murray, Christopher J., Perkins, William A., Arntzen, Evan V., Ren, Huiying, Mackley, Robert D., & Richmond, Marshall C. Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations. United States. doi:10.1002/hyp.13396.
Hou, Zhangshuan, Scheibe, Timothy D., Murray, Christopher J., Perkins, William A., Arntzen, Evan V., Ren, Huiying, Mackley, Robert D., and Richmond, Marshall C. Mon . "Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations". United States. doi:10.1002/hyp.13396.
@article{osti_1530592,
title = {Identification and mapping of riverbed sediment facies in the Columbia River through integration of field observations and numerical simulations},
author = {Hou, Zhangshuan and Scheibe, Timothy D. and Murray, Christopher J. and Perkins, William A. and Arntzen, Evan V. and Ren, Huiying and Mackley, Robert D. and Richmond, Marshall C.},
abstractNote = {In the Hanford Reach of the Columbia River, a thin layer of recent alluvium overlies the sedimentary formations that comprise the unconfined groundwater aquifer. Experimental and modeling studies have demonstrated that this alluvial layer exerts significant control on the exchange of groundwater and surface water (hydrologic exchange flux), and is associated with elevated levels of biogeochemical activity. This layer is also observed to be strongly heterogeneous, and quantifying the spatial distribution of properties over the range of scales of interest is challenging. Facies are elements of a sediment classification scheme that groups complex geologic materials into a set of discrete classes according to distinguishing features. Facies classifications have been used as a framework for assigning heterogeneous material properties to grid cells of numerical models of flow and reactive transport in subsurface media. The usefulness of such an approach hinges on being able to relate facies to quantitative properties needed for flow and reactive transport modeling, and on being able to map facies over the domain of interest using readily available information. While aquifer facies have been used in various modeling contexts, application of this concept to riverbed sediments is relatively new. Here we describe an approach for categorizing and mapping recent alluvial (riverbed) sediments based on the integration of diverse observations with numerical simulations of river hydrodynamics. The facies have distinct distributions of sediment texture which correspond to variations in hydraulic properties, and therefore provide a useful framework for assigning heterogeneous properties in numerical simulations of hydrologic exchange flows and biogeochemical processes.},
doi = {10.1002/hyp.13396},
journal = {Hydrological Processes},
number = 8,
volume = 33,
place = {United States},
year = {2019},
month = {4}
}