Commit 16f1f391 authored by bourgesl's avatar bourgesl
Browse files

updated metadata for IGE_erosion_model

parent bed9a4dd
# DOI_suffix;data_access_url
"# Clé";Valeur;;;;
creatorName;"Magdalena Uber";;;;
creatorName;"Guillaume Nord";;;;
creatorName;"Cédric Legoût";;;;
creatorName;"Luis Cea";;;;
title;"How do modeling choices impact the representation of structural connectivity and the dynamics of suspended sediment fluxes in distributed soil erosion models?";;;;
title;"Modeled contributions of sediment sources to total suspended sediment flux in two mesoscale catchments";;;;
subject:main;"erosion model";;;;
......@@ -15,7 +15,6 @@ contributorName:DataManager;"Guillaume Nord";;;;
contributorName:DataManager;"Cédric Legoût";;;;
contributorName:Distributor;"Institut des Géosciences de l'Environnement (France) - IGE";;;;
contributorName:Distributor;"OSUG Data Center (France)";;;;
contributorName:HostingInstitution;"Université Grenoble Alpes (France) - UGA";;;;
contributorName:Funder;"Université Grenoble Alpes (France) - UGA";;;;
contributorName:ProjectLeader;"Magdalena Uber";;;;
contributorName:ProjectLeader;"Guillaume Nord";affiliation;UGA/IGE;nameIdentifier:ORCID;0000-0001-5541-9368
......@@ -26,13 +25,16 @@ contributorName:Sponsor;"Infrastructure de Recherche Observation de la Zone Crit
contributorName:ResearchGroup;"Institut des Géosciences de l'Environnement (France) - IGE";;;;
contributorName:ResearchGroup;"Environmental and Water Engineering Group, Department of Civil Engineering, Universidade da Coruña, A Coruña, Spain";;;;
resourceType:Dataset;"Interactive application to visualize the model output dataset";;;;
rights;"License: CC BY 4.0";rightsURI;;;
rights;"Data access and use are ruled by the CC-BY 4.0 license.";;;;
description:Abstract;"Soil erosion and suspended sediment transport understanding is an important issue in terms of soil and water resources management in the critical zone. In mesoscale watersheds (>10km²) the spatial distribution of potential sediment sources within the catchment associated to the rainfall dynamics are considered as the main factors of the observed suspended sediment flux variability within and between runoff events. Given the high spatial heterogeneity that can exist for such scales of interest, distributed physically based models of soil erosion and sediment transport are powerful tools to distinguish the specific effect of structural and functional connectivity on suspended sediment flux dynamics. As the spatial discretization of a model and its parameterization can crucially influence how structural connectivity of the catchment is represented in the model, this study analyzed the impact of modeling choices in terms of contributing drainage area (CDA) threshold to define the river network and of Manning's roughness parameter (n) on the sediment flux variability at the outlet of two geomorphological distinct watersheds. While the modelled liquid and solid discharges were found to be sensitive to these choices, the patterns of the modeled source contributions remained relatively similar when the CDA threshold was restricted to the range of 15 to 50 ha, n on the hillslopes to the range 0.4-0.8 and to 0.025-0.075 in the river. The comparison of both catchments showed that the actual location of sediment sources was more important than the choices made during discretization and parameterization of the model. Among the various structural connectivity indicators used to describe the geological sources, the mean distance to the stream was the most relevant proxy of the temporal characteristics of the modelled sedigraphs.";;;;
description:Abstract;"The application enables to show the contribution of erosion zones that act as sediment sources to total suspended sediment load in percent simulated with the IBER soil erosion model. Model output can be visualized for two mesoscale Mediterranean catchments in southeastern France, the 42 km2 Claduègne catchment and the 20 km2 Galabre catchment and for different sets of scenarios:
(i) CDA threshold: The threshold of contributing drainage area (CDA) defines the length of the river network. Values were varied from 15 ha to 500 ha.
(ii) Manning's n: river: Manning's roughness parameter in the river network. Values were varied from 0.025 to 0.1.
(iii) Manning's n: hillslopes: Manning's roughness parameter on the hillslopes. Values were varied from 0.2 to 0.8.
(iv) Source classification: Source classification based on connectivity, i.e. sediment sources were subdivided based on their distance to the outlet and their distance to the river.
In addition to the modeled source contributions the time series of rainfall intensity, liquid and solid discharge can be displayed.";;;;
Cédric Legoût;UGA/IGE;0000-0003-2958-4815
Guillaume Nord;UGA/IGE;0000-0001-5541-9368
Luis Cea;;
Magdalena Uber;;
"# Clé";Valeur;;;;
contributorName:HostingInstitution;"Université Grenoble Alpes (France) - UGA";;;;
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment