Baseflow control on sediment flux connectivity

Insights from a nested catchment study in Central Mexico

C. Duvert, N. Gratiot, R. Anguiano-Valencia, J. Némery, M.E. Mendoza, T. Carlón-Allende, C. Prat, M. Esteves

Research output: Contribution to journalArticleResearchpeer-review

Abstract

In order to assess the extent of sediment connectivity between uplands and lowlands and to quantify the processes of in-channel deposition and remobilization, measurements of suspended sediment fluxes were conducted in a nested rural catchment of the Mexican Volcanic Belt. Data were collected over one year at three upland sites (3 to 12km2) and two downstream stations (390-630km2). Our results show that a structural discontinuity in the catchment (i.e. abrupt slope decrease at the junction between piedmonts and the alluvial plain from 2 to 10% to<0.1%) could be compensated by functional continuity during floods. Direct conveyance of fine sediment to the outlet occurred when a high stream transport capacity was reached. Erosion of the streambed was observed on various occasions and accounted for up to 50% of the flux leaving the catchment during one event. Conversely, temporary in-channel storage was apparent on other occasions, amounting to up to 52% of the flux recorded upstream during one storm. These two distinct behaviours were approximately equally distributed along the rainy season and strongly driven by the extent of coupling between surface and subsurface water. This work indeed highlights the role of baseflow spatial variations in determining the extent of lowland sediment conveyance. Riverbed erosional processes occurred when large differences in pre-event baseflow values (i.e. at least a twofold longitudinal increase) were observed between the 5-km distant lowland stations. Our findings outline the importance of systematically taking into consideration the baseflow parameter in research focusing on fine sediment transport across scales. © 2011 Elsevier B.V.
Original languageUndefined
Pages (from-to)129-140
Number of pages12
JournalCatena
Volume87
Issue number1
DOIs
Publication statusPublished - 2011
Externally publishedYes

Cite this

Duvert, C., Gratiot, N., Anguiano-Valencia, R., Némery, J., Mendoza, M. E., Carlón-Allende, T., ... Esteves, M. (2011). Baseflow control on sediment flux connectivity: Insights from a nested catchment study in Central Mexico. Catena, 87(1), 129-140. https://doi.org/10.1016/j.catena.2011.05.021
Duvert, C. ; Gratiot, N. ; Anguiano-Valencia, R. ; Némery, J. ; Mendoza, M.E. ; Carlón-Allende, T. ; Prat, C. ; Esteves, M. / Baseflow control on sediment flux connectivity : Insights from a nested catchment study in Central Mexico. In: Catena. 2011 ; Vol. 87, No. 1. pp. 129-140.
@article{009d12fd718842108b22cae48451d12c,
title = "Baseflow control on sediment flux connectivity: Insights from a nested catchment study in Central Mexico",
abstract = "In order to assess the extent of sediment connectivity between uplands and lowlands and to quantify the processes of in-channel deposition and remobilization, measurements of suspended sediment fluxes were conducted in a nested rural catchment of the Mexican Volcanic Belt. Data were collected over one year at three upland sites (3 to 12km2) and two downstream stations (390-630km2). Our results show that a structural discontinuity in the catchment (i.e. abrupt slope decrease at the junction between piedmonts and the alluvial plain from 2 to 10{\%} to<0.1{\%}) could be compensated by functional continuity during floods. Direct conveyance of fine sediment to the outlet occurred when a high stream transport capacity was reached. Erosion of the streambed was observed on various occasions and accounted for up to 50{\%} of the flux leaving the catchment during one event. Conversely, temporary in-channel storage was apparent on other occasions, amounting to up to 52{\%} of the flux recorded upstream during one storm. These two distinct behaviours were approximately equally distributed along the rainy season and strongly driven by the extent of coupling between surface and subsurface water. This work indeed highlights the role of baseflow spatial variations in determining the extent of lowland sediment conveyance. Riverbed erosional processes occurred when large differences in pre-event baseflow values (i.e. at least a twofold longitudinal increase) were observed between the 5-km distant lowland stations. Our findings outline the importance of systematically taking into consideration the baseflow parameter in research focusing on fine sediment transport across scales. {\circledC} 2011 Elsevier B.V.",
keywords = "alluvial plain, baseflow, catchment, erosivity, groundwater-surface water interaction, piedmont, rainfall, remobilization, river bed, rural area, sediment transport, sediment yield, spatial variation, stream bed, suspended sediment, tropical environment, volcanic belt, Mexico [North America]",
author = "C. Duvert and N. Gratiot and R. Anguiano-Valencia and J. N{\'e}mery and M.E. Mendoza and T. Carl{\'o}n-Allende and C. Prat and M. Esteves",
year = "2011",
doi = "10.1016/j.catena.2011.05.021",
language = "Undefined",
volume = "87",
pages = "129--140",
journal = "Catena",
issn = "0341-8162",
publisher = "Elsevier",
number = "1",

}

Duvert, C, Gratiot, N, Anguiano-Valencia, R, Némery, J, Mendoza, ME, Carlón-Allende, T, Prat, C & Esteves, M 2011, 'Baseflow control on sediment flux connectivity: Insights from a nested catchment study in Central Mexico', Catena, vol. 87, no. 1, pp. 129-140. https://doi.org/10.1016/j.catena.2011.05.021

Baseflow control on sediment flux connectivity : Insights from a nested catchment study in Central Mexico. / Duvert, C.; Gratiot, N.; Anguiano-Valencia, R.; Némery, J.; Mendoza, M.E.; Carlón-Allende, T.; Prat, C.; Esteves, M.

In: Catena, Vol. 87, No. 1, 2011, p. 129-140.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Baseflow control on sediment flux connectivity

T2 - Insights from a nested catchment study in Central Mexico

AU - Duvert, C.

AU - Gratiot, N.

AU - Anguiano-Valencia, R.

AU - Némery, J.

AU - Mendoza, M.E.

AU - Carlón-Allende, T.

AU - Prat, C.

AU - Esteves, M.

PY - 2011

Y1 - 2011

N2 - In order to assess the extent of sediment connectivity between uplands and lowlands and to quantify the processes of in-channel deposition and remobilization, measurements of suspended sediment fluxes were conducted in a nested rural catchment of the Mexican Volcanic Belt. Data were collected over one year at three upland sites (3 to 12km2) and two downstream stations (390-630km2). Our results show that a structural discontinuity in the catchment (i.e. abrupt slope decrease at the junction between piedmonts and the alluvial plain from 2 to 10% to<0.1%) could be compensated by functional continuity during floods. Direct conveyance of fine sediment to the outlet occurred when a high stream transport capacity was reached. Erosion of the streambed was observed on various occasions and accounted for up to 50% of the flux leaving the catchment during one event. Conversely, temporary in-channel storage was apparent on other occasions, amounting to up to 52% of the flux recorded upstream during one storm. These two distinct behaviours were approximately equally distributed along the rainy season and strongly driven by the extent of coupling between surface and subsurface water. This work indeed highlights the role of baseflow spatial variations in determining the extent of lowland sediment conveyance. Riverbed erosional processes occurred when large differences in pre-event baseflow values (i.e. at least a twofold longitudinal increase) were observed between the 5-km distant lowland stations. Our findings outline the importance of systematically taking into consideration the baseflow parameter in research focusing on fine sediment transport across scales. © 2011 Elsevier B.V.

AB - In order to assess the extent of sediment connectivity between uplands and lowlands and to quantify the processes of in-channel deposition and remobilization, measurements of suspended sediment fluxes were conducted in a nested rural catchment of the Mexican Volcanic Belt. Data were collected over one year at three upland sites (3 to 12km2) and two downstream stations (390-630km2). Our results show that a structural discontinuity in the catchment (i.e. abrupt slope decrease at the junction between piedmonts and the alluvial plain from 2 to 10% to<0.1%) could be compensated by functional continuity during floods. Direct conveyance of fine sediment to the outlet occurred when a high stream transport capacity was reached. Erosion of the streambed was observed on various occasions and accounted for up to 50% of the flux leaving the catchment during one event. Conversely, temporary in-channel storage was apparent on other occasions, amounting to up to 52% of the flux recorded upstream during one storm. These two distinct behaviours were approximately equally distributed along the rainy season and strongly driven by the extent of coupling between surface and subsurface water. This work indeed highlights the role of baseflow spatial variations in determining the extent of lowland sediment conveyance. Riverbed erosional processes occurred when large differences in pre-event baseflow values (i.e. at least a twofold longitudinal increase) were observed between the 5-km distant lowland stations. Our findings outline the importance of systematically taking into consideration the baseflow parameter in research focusing on fine sediment transport across scales. © 2011 Elsevier B.V.

KW - alluvial plain

KW - baseflow

KW - catchment

KW - erosivity

KW - groundwater-surface water interaction

KW - piedmont

KW - rainfall

KW - remobilization

KW - river bed

KW - rural area

KW - sediment transport

KW - sediment yield

KW - spatial variation

KW - stream bed

KW - suspended sediment

KW - tropical environment

KW - volcanic belt, Mexico [North America]

UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-79959970937&doi=10.1016%2fj.catena.2011.05.021&partnerID=40&md5=f2a45e4dca60fe8fcbeb43117ea165ee

U2 - 10.1016/j.catena.2011.05.021

DO - 10.1016/j.catena.2011.05.021

M3 - Article

VL - 87

SP - 129

EP - 140

JO - Catena

JF - Catena

SN - 0341-8162

IS - 1

ER -