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Title: Variations in Bedrock and Vegetation Cover Modulate Subsurface Water Flow Dynamics of a Mountainous Hillslope

Journal Article · · Water Resources Research
ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [3];  [4]; ORCiD logo [4]; ORCiD logo [1]
  1. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); University of Padua (Italy)
  3. University of Wyoming, Laramie, WY (United States)
  4. British Geological Survey, Nottingham (United Kingdom)

Predicting the hydrological response of watersheds to climate disturbances requires a detailed understanding of the processes connecting hillslopes and streams. Using a network of soil moisture and temperature sensors, electrical resistivity tomography monitoring, and a weather station we assess the above and below-ground processes driving the hydrological response of a hillslope during snowmelt and summer monsoon. The transect covers bedrock and vegetation gradients, with a steep upper part characterized by shallow bedrock, and gentle lower part underlain by colluvium. The main vegetation cover is conifers on the upper, and grass and veratrum on the lower part. Combined with a simplified hydrological model, we show that the thin soil layer of the steep slope acts as a preferential flow path, leading to mostly shallow lateral flow, interrupted by vertical flow, mostly at tree locations, and likely facilitated by flow along fractures and roots. Vertical flow and upstream-driven groundwater dynamics are prevailing at the colluvium, presenting a very different hydrological behavior compared to the upper part. These results show that subsurface structure and features have a strong control on the hydrological response of a hillslope and that those can create considerably varying hydrological dynamics across small spatial scales.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE
Grant/Contract Number:
AC02-05CH11231; DE‐AC02‐05CH11231
OSTI ID:
2301722
Alternate ID(s):
OSTI ID: 2301723; OSTI ID: 2335320
Journal Information:
Water Resources Research, Vol. 60, Issue 2; ISSN 0043-1397
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

References (69)

Streamflow generation in a forested watershed, New Zealand journal August 1979
Advancing process-based watershed hydrological research using near-surface geophysics: a vision for, and review of, electrical and magnetic geophysical methods journal August 2008
Field estimates of groundwater circulation depths in two mountainous watersheds in the western U.S. and the effect of deep circulation on solute concentrations in streamflow: GROUNDWATER CIRCULATION DEPTHS journal April 2017
Weathering of rock to regolith: The activity of deep roots in bedrock fractures journal August 2017
A distributed temperature profiling system for vertically and laterally dense acquisition of soil and snow temperature journal January 2022
Comparing temperature correction models for soil electrical conductivity measurement journal January 2010
GLUE: 20 years on journal November 2013
The Role of Weather Radar in Rainfall Estimation and Its Application in Meteorological and Hydrological Modelling—A Review journal January 2021
Plant species distribution within the Upper Colorado River Basin estimated by using hyperspectral and LiDAR airborne data
  • Falco, Nicola; Balde, Abdoulaye; Breckheimer, Ian
  • Environmental System Science Data Infrastructure for a Virtual Ecosystem; Watershed Function SFA https://doi.org/10.15485/1602034
dataset January 2020
Factors controlling the asymmetry of soil moisture and vegetation dynamics in a hilly Mediterranean catchment journal July 2021
Monitoring spatiotemporal soil moisture variability in the unsaturated zone of a mixed forest using electrical resistivity tomography journal March 2023
Four-dimensional electrical conductivity monitoring of stage-driven river water intrusion: Accounting for water table effects using a transient mesh boundary and conditional inversion constraints: 4-D RIVER WATER INTRUSION IMAGING journal August 2015
Exploring the role of bedrock representation on plant transpiration response during dry periods at four forested sites in Europe journal July 2022
Contribution of hydraulically lifted deep moisture to the water budget in a Southern California mixed forest: CONTRIBUTION OF HYDRAULICALLY LIFTED journal November 2013
Soil moisture and plant growth responses to litter and defoliation impacts in Parkland grasslands journal January 2010
Aerobic respiration controls on shale weathering journal January 2023
Preferential flow through shallow fractured bedrock and a 3D fill-and-spill model of hillslope subsurface hydrology journal September 2019
Conserving the Stage: Climate Change and the Geophysical Underpinnings of Species Diversity journal July 2010
Long-term geoelectrical monitoring of landslides in natural and engineered slopes journal November 2022
The effect of vegetation on infiltration in shallow soils underlain by fissured bedrock journal May 1999
Shallow groundwater effect on land surface temperature and surface energy balance under bare soil conditions: modeling and description journal January 2012
The influence of diurnal snowmelt and transpiration on hillslope throughflow and stream response journal January 2018
Factors controlling seasonal groundwater and solute flux from snow-dominated basins journal June 2018
Water ‘on the rocks’: a summer drink for thirsty trees? journal September 2020
Geophysics‐Informed Hydrologic Modeling of a Mountain Headwater Catchment for Studying Hydrological Partitioning in the Critical Zone journal November 2023
A review of groundwater in high mountain environments journal October 2020
NMR Logging to Estimate Hydraulic Conductivity in Unconsolidated Aquifers: Ground Water xx, no. x: xx-xx journal March 2015
matplotlib/matplotlib: REL: v3.6.2 software January 2022
Mountains of the world, water towers for humanity: Typology, mapping, and global significance: MOUNTAINS AS WATER TOWERS FOR HUMANITY journal July 2007
Concepts of hydrological connectivity: Research approaches, pathways and future agendas journal April 2013
Linking hydrologic signatures to hydrologic processes: A review journal January 2020
From hillslope to stream: methods to investigate subsurface connectivity journal February 2015
Chemical reactions, porosity, and microfracturing in shale during weathering: The effect of erosion rate journal January 2020
Experimental analysis of drainage and water storage of litter layers journal October 2007
The East River, Colorado, Watershed: A Mountainous Community Testbed for Improving Predictive Understanding of Multiscale Hydrological–Biogeochemical Dynamics journal January 2018
Geophysical and Environmental Monitoring Data, and Subsurface Flow Modelling Results for Chicken Bone Meadow, Mt. Snodgrass, Crested Butte, CO
  • Uhlemann, Sebastian; Dafflon, Baptiste; Chou, Chunwei
  • Environmental System Science Data Infrastructure for a Virtual Ecosystem; Watershed Function SFA https://doi.org/10.15485/2283406
dataset January 2024
Multidimensional hydrological modeling of a forested catchment in a German low mountain range using a modular runoff and water balance model journal June 2023
The emergence of hydrogeophysics for improved understanding of subsurface processes over multiple scales: The Emergence of Hydrogeophysics journal June 2015
The Influence of Plant Root Systems on Subsurface Flow: Implications for Slope Stability journal November 2011
Improved hydrogeophysical characterization and monitoring through parallel modeling and inversion of time-domain resistivity andinduced-polarization data journal July 2010
Storage controls on the generation of double peak hydrographs in a forested headwater catchment journal December 2016
Probabilistic Evaluation of Geoscientific Hypotheses With Geophysical Data: Application to Electrical Resistivity Imaging of a Fractured Bedrock Zone journal September 2021
Surface parameters and bedrock properties covary across a mountainous watershed: Insights from machine learning and geophysics journal March 2022
Estimating the water holding capacity of the critical zone using near-surface geophysics journal September 2018
Watershed zonation through hillslope clustering for tractably quantifying above- and below-ground watershed heterogeneity and functions journal January 2022
Applying petrophysical models to radar travel time and electrical resistivity tomograms: Resolution-dependent limitations journal January 2005
Vegetation and Environmental Patterns in the Crested Butte Area, Gunnison County, Colorado journal February 1962
Environmental Geology: Handbook of Field Methods and Case Studies book January 2007
Drought Propagation in Contiguous U.S. Watersheds: A Process‐Based Understanding of the Role of Climate and Watershed Properties journal September 2020
Sensitivity of Simulated Mountain Block Hydrology to Subsurface Conceptualization journal October 2020
Impact of Uncertainty in Precipitation Forcing Data Sets on the Hydrologic Budget of an Integrated Hydrologic Model in Mountainous Terrain journal November 2020
Water release through plant roots: new insights into its consequences at the plant and ecosystem level: Tansley review journal January 2012
Subsurface flow velocities in a hillslope with lateral preferential flow: HILLSLOPE PREFERENTIAL FLOW VELOCITIES journal November 2009
Monitoring soil water content and deficit using Electrical Resistivity Tomography (ERT) – A case study in the Cevennes area, France journal January 2010
Enhanced groundwater recharge rates and altered recharge sensitivity to climate variability through subsurface heterogeneity journal February 2017
Direct observations of rock moisture, a hidden component of the hydrologic cycle journal February 2018
Monitoring spatiotemporal soil moisture changes in the subsurface of forest sites using electrical resistivity tomography (ERT) journal June 2022
The impact of across-slope forest strips on hillslope subsurface hydrological dynamics journal February 2020
Form and function in hillslope hydrology: in situ imaging and characterization of flow-relevant structures journal January 2017
Variability of Snow and Rainfall Partitioning Into Evapotranspiration and Summer Runoff Across Nine Mountainous Catchments journal July 2022
Forest vulnerability to drought controlled by bedrock composition journal September 2022
Spatiotemporal origin of soil water taken up by vegetation journal October 2021
Temperature-Electrical Conductivity Relation of Water for Environmental Monitoring and Geophysical Data Inversion journal August 2004
ResIPy, an intuitive open source software for complex geoelectrical inversion/modeling journal April 2020
Advanced monitoring of soil-vegetation co-dynamics reveals the successive controls of snowmelt on soil moisture and on plant seasonal dynamics in a mountainous watershed journal May 2023
4D electrical resistivity tomography monitoring of soil moisture dynamics in an operational railway embankment journal December 2012
Widespread woody plant use of water stored in bedrock journal September 2021
Plant species distribution within the Upper Colorado River Basin estimated by using hyperspectral and LiDAR airborne data
  • Falco, Nicola; Balde, Abdoulaye; Breckheimer, Ian
  • Environmental System Science Data Infrastructure for a Virtual Ecosystem; Watershed Function SFA https://doi.org/10.15485/1602034
dataset January 2020
Geophysical and Environmental Monitoring Data, and Subsurface Flow Modelling Results for Chicken Bone Meadow, Mt. Snodgrass, Crested Butte, CO
  • Uhlemann, Sebastian; Dafflon, Baptiste; Chou, Chunwei
  • Environmental System Science Data Infrastructure for a Virtual Ecosystem; Watershed Function SFA https://doi.org/10.15485/2283406
dataset January 2024