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 Andes” by Tofelde et al. (2026). 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 manuscript). 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: 11.06.2026 23:43

Status

Aktiv

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