Valley-floor width and potential control parameters along the Western Andes

Description: This data publication supports the manuscript “Controls on Valley-Floor Width in the Western An-des” by Tofelde et al. (currently under review in the Journal of Geophysical Research: Earth Sur-face). The aim of the associated study is to quantify and compare the relative influence of four key factors—river discharge, tectonic uplift, bedrock strength, and lateral sediment supply from adja-cent hillslopes—on the width of valley floors. Valley-floor width was systematically measured at more than 126,000 locations across 84 catch-ments spanning the western Andes between 5°S and 40°S. To represent the four hypothesized controls, eleven proxy variables were developed and analyzed (see Table 1 in the main manu-script). Valley-floor width was quantified using the approach of Clubb et al. (2022) implemented in the topography analysis software LSDTopoTools (Mudd et al., 2023). River steepness index (Wobus et al., 2006), a proxy for tectonic uplift, was also calculated in LSDTopoTools. All remaining proxies were quantified using the topography analysis software TopoToolbox (Schwanghart & Kuhn, 2010; Schwanghart & Scherler, 2014) implemented in Matlab with the script Valley_floor_analysis.m pro-vided here. This script reproduces the datasets used in the study and allows to apply the approach to new locations.

Global identifier:

Doi(
    "10.5880/fidgeo.2025.051",
)

Tags: Fluss ? Anden ? Software ? Topographie ? Studie ? Sediment ? Daten ? Tal ? EARTH SCIENCE > LAND SURFACE > GEOMORPHOLOGY > FLUVIAL LANDFORMS/PROCESSES ? EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS > CANYON ? EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS > FLOOD PLAIN ? EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS > RIVER ? EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS > VALLEY ? EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > FLUVIAL LANDFORMS > WATERSHED/DRAINAGE BASINS ? Models/Analyses > DEM ? The Present ? landscpe evolution ? lateral river erosion ?

License: Creative Commons Namensnennung 4.0

Language: Englisch/English

Organisations

• GFZ Data Services (Herausgeberschaft)
• GFZ Helmholtz-Zentrum für Geoforschung (Bereitstellung)

Persons

• Bookhagen, Bodo (Verfasser*in)
• Bookhagen, Bodo (Beitragende*r)
• Clubb, Fiona (Verfasser*in)
• Clubb, Fiona (Beitragende*r)
• Tofelde, Stefanie (Verfasser*in)
• Tofelde, Stefanie (Beitragende*r)

Issued: 2025-01-01

Last harvest: 05.06.2026 00:37

Status

Aktiv

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