Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships: Jemez River Basin Critical Zone Observatory

Jennifer McIntosh, Courtney Schaumberg, Julia Perdrial, Adrian Harpold, Angélica Vázquez-Ortega, Craig Rasmussen, David Vinson, Xavier Zapata-Rios, Paul Brooks, Thomas Meixner, Jon Pelletier, Louis Derry, Jon Chorover

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

This study investigates the influence of water, carbon, and energy fluxes on solute production and transport through the Jemez Critical Zone (CZ) and impacts on C-Q relationships over variable spatial and temporal scales. Chemical depletion-enrichment profiles of soils, combined with regolith thickness and groundwater data indicate the importance to stream hydrochemistry of incongruent dissolution of silicate minerals during deep bedrock weathering, which is primarily limited by water fluxes, in this highly fractured, young volcanic terrain. Under high flow conditions (e.g., spring snowmelt), wetting of soil and regolith surfaces and presence of organic acids promote mineral dissolution and provide a constant supply of base cations, Si, and DIC to soil water and groundwater. Mixing of waters from different hydrochemical reservoirs in the near stream environment during “wet” periods leads to the chemostatic behavior of DIC, base cations, and Si in stream flow. Metals transported by organic matter complexation (i.e., Ge, Al) and/or colloids (i.e., Al) during periods of soil saturation and lateral connectivity to the stream display a positive relationship with Q. Variable Si-Q relationships, under all but the highest flow conditions, can be explained by nonconservative transport and precipitation of clay minerals, which influences long versus short-term Si weathering fluxes. By combining measurements of the CZ obtained across different spatial and temporal scales, we were able to constrain weathering processes in different hydrological reservoirs that may be flushed to the stream during hydrologic events, thereby informing C-Q relationships.

Original languageEnglish (US)
Pages (from-to)4169-4196
Number of pages28
JournalWater Resources Research
Volume53
Issue number5
DOIs
StatePublished - May 1 2017

Fingerprint

observatory
river basin
timescale
weathering
regolith
cation
dissolution
groundwater
hydrochemistry
soil
silicate mineral
carbon flux
colloid
energy flux
snowmelt
organic acid
complexation
wetting
water
clay mineral

Keywords

  • concentration-discharge relationships
  • soil water chemistry
  • water quality
  • weathering

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships : Jemez River Basin Critical Zone Observatory. / McIntosh, Jennifer; Schaumberg, Courtney; Perdrial, Julia; Harpold, Adrian; Vázquez-Ortega, Angélica; Rasmussen, Craig; Vinson, David; Zapata-Rios, Xavier; Brooks, Paul; Meixner, Thomas; Pelletier, Jon; Derry, Louis; Chorover, Jon.

In: Water Resources Research, Vol. 53, No. 5, 01.05.2017, p. 4169-4196.

Research output: Contribution to journalArticle

@article{730d7379888142b3826bbe5f469b768c,
title = "Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships: Jemez River Basin Critical Zone Observatory",
abstract = "This study investigates the influence of water, carbon, and energy fluxes on solute production and transport through the Jemez Critical Zone (CZ) and impacts on C-Q relationships over variable spatial and temporal scales. Chemical depletion-enrichment profiles of soils, combined with regolith thickness and groundwater data indicate the importance to stream hydrochemistry of incongruent dissolution of silicate minerals during deep bedrock weathering, which is primarily limited by water fluxes, in this highly fractured, young volcanic terrain. Under high flow conditions (e.g., spring snowmelt), wetting of soil and regolith surfaces and presence of organic acids promote mineral dissolution and provide a constant supply of base cations, Si, and DIC to soil water and groundwater. Mixing of waters from different hydrochemical reservoirs in the near stream environment during “wet” periods leads to the chemostatic behavior of DIC, base cations, and Si in stream flow. Metals transported by organic matter complexation (i.e., Ge, Al) and/or colloids (i.e., Al) during periods of soil saturation and lateral connectivity to the stream display a positive relationship with Q. Variable Si-Q relationships, under all but the highest flow conditions, can be explained by nonconservative transport and precipitation of clay minerals, which influences long versus short-term Si weathering fluxes. By combining measurements of the CZ obtained across different spatial and temporal scales, we were able to constrain weathering processes in different hydrological reservoirs that may be flushed to the stream during hydrologic events, thereby informing C-Q relationships.",
keywords = "concentration-discharge relationships, soil water chemistry, water quality, weathering",
author = "Jennifer McIntosh and Courtney Schaumberg and Julia Perdrial and Adrian Harpold and Ang{\'e}lica V{\'a}zquez-Ortega and Craig Rasmussen and David Vinson and Xavier Zapata-Rios and Paul Brooks and Thomas Meixner and Jon Pelletier and Louis Derry and Jon Chorover",
year = "2017",
month = "5",
day = "1",
doi = "10.1002/2016WR019712",
language = "English (US)",
volume = "53",
pages = "4169--4196",
journal = "Water Resources Research",
issn = "0043-1397",
publisher = "American Geophysical Union",
number = "5",

}

TY - JOUR

T1 - Geochemical evolution of the Critical Zone across variable time scales informs concentration-discharge relationships

T2 - Jemez River Basin Critical Zone Observatory

AU - McIntosh, Jennifer

AU - Schaumberg, Courtney

AU - Perdrial, Julia

AU - Harpold, Adrian

AU - Vázquez-Ortega, Angélica

AU - Rasmussen, Craig

AU - Vinson, David

AU - Zapata-Rios, Xavier

AU - Brooks, Paul

AU - Meixner, Thomas

AU - Pelletier, Jon

AU - Derry, Louis

AU - Chorover, Jon

PY - 2017/5/1

Y1 - 2017/5/1

N2 - This study investigates the influence of water, carbon, and energy fluxes on solute production and transport through the Jemez Critical Zone (CZ) and impacts on C-Q relationships over variable spatial and temporal scales. Chemical depletion-enrichment profiles of soils, combined with regolith thickness and groundwater data indicate the importance to stream hydrochemistry of incongruent dissolution of silicate minerals during deep bedrock weathering, which is primarily limited by water fluxes, in this highly fractured, young volcanic terrain. Under high flow conditions (e.g., spring snowmelt), wetting of soil and regolith surfaces and presence of organic acids promote mineral dissolution and provide a constant supply of base cations, Si, and DIC to soil water and groundwater. Mixing of waters from different hydrochemical reservoirs in the near stream environment during “wet” periods leads to the chemostatic behavior of DIC, base cations, and Si in stream flow. Metals transported by organic matter complexation (i.e., Ge, Al) and/or colloids (i.e., Al) during periods of soil saturation and lateral connectivity to the stream display a positive relationship with Q. Variable Si-Q relationships, under all but the highest flow conditions, can be explained by nonconservative transport and precipitation of clay minerals, which influences long versus short-term Si weathering fluxes. By combining measurements of the CZ obtained across different spatial and temporal scales, we were able to constrain weathering processes in different hydrological reservoirs that may be flushed to the stream during hydrologic events, thereby informing C-Q relationships.

AB - This study investigates the influence of water, carbon, and energy fluxes on solute production and transport through the Jemez Critical Zone (CZ) and impacts on C-Q relationships over variable spatial and temporal scales. Chemical depletion-enrichment profiles of soils, combined with regolith thickness and groundwater data indicate the importance to stream hydrochemistry of incongruent dissolution of silicate minerals during deep bedrock weathering, which is primarily limited by water fluxes, in this highly fractured, young volcanic terrain. Under high flow conditions (e.g., spring snowmelt), wetting of soil and regolith surfaces and presence of organic acids promote mineral dissolution and provide a constant supply of base cations, Si, and DIC to soil water and groundwater. Mixing of waters from different hydrochemical reservoirs in the near stream environment during “wet” periods leads to the chemostatic behavior of DIC, base cations, and Si in stream flow. Metals transported by organic matter complexation (i.e., Ge, Al) and/or colloids (i.e., Al) during periods of soil saturation and lateral connectivity to the stream display a positive relationship with Q. Variable Si-Q relationships, under all but the highest flow conditions, can be explained by nonconservative transport and precipitation of clay minerals, which influences long versus short-term Si weathering fluxes. By combining measurements of the CZ obtained across different spatial and temporal scales, we were able to constrain weathering processes in different hydrological reservoirs that may be flushed to the stream during hydrologic events, thereby informing C-Q relationships.

KW - concentration-discharge relationships

KW - soil water chemistry

KW - water quality

KW - weathering

UR - http://www.scopus.com/inward/record.url?scp=85019923061&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85019923061&partnerID=8YFLogxK

U2 - 10.1002/2016WR019712

DO - 10.1002/2016WR019712

M3 - Article

AN - SCOPUS:85019923061

VL - 53

SP - 4169

EP - 4196

JO - Water Resources Research

JF - Water Resources Research

SN - 0043-1397

IS - 5

ER -