Description: Many fault-bounded mountain ranges have asymmetric cross-sections, in which the main drainage divide is displaced from the range center. Although differential rock uplift is commonly invoked as the cause of this asymmetry, divide position also depends on cross-divide variations in erosional efficiency and base-level elevation. The extent to which base-level contrasts can outweigh differential uplift remains poorly constrained, particularly in fold-thrust belts where one flank commonly drains to an elevated wedge-top basin that lies tens to hundreds of meters above the opposing foreland plain. This dataset accompanies a study that develops and applies a combined analytical and numerical framework to separate the contributions of rock-uplift rate, erosional efficiency, and cross-divide base-level difference to the steady-state position of a drainage divide. The framework is evaluated using a suite of generic landscape-evolution experiments and is then applied to the Mohand Range, a frontal anticline of the northwestern Sub-Himalaya, modeled as either a fault-bend fold or a fault-propagation fold. This repository contains: (1) The MATLAB code and input parameter files used to run the numerical landscape-evolution simulations with a modified version of the TopoToolbox Landscape Evolution Model (TTLEM; Campforts et al., 2017); (2) Basin areas and longest channel lengths extracted from the simulated steady-state drainage networks, together with the fitted Hack's law coefficient (kb) and exponent (b), for both the 74 generic experiments and the 8 Mohand-specific experiments; and (3) Simulation videos of the 8 Mohand-specific experiments, comprising four fault-bend-fold scenarios (MFBF1–MFBF4) and four fault-propagation-fold scenarios (MFPF1–MFPF4), showing the temporal evolution of topography and the migration of the drainage divide.
Global identifier:
Doi(
"10.5880/GFZ.AVXH.2026.004",
)
Tags: Wasserstraße ? Topographie ? Modellversuch ? Studie ? Modellierung ? Landschaft ? Base level ? Drainage divide ? Erosional efficiency ? Landscape-evolution model ? Rock-uplift rate ? Science Keywords > EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION ? Science Keywords > EARTH SCIENCE > LAND SURFACE > LANDSCAPE ? Science Keywords > EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > TECTONIC PROCESSES > TECTONIC UPLIFT ? Science Keywords > EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GROUND WATER > GROUND WATER PROCESSES/MEASUREMENTS > DRAINAGE > DRAINAGE DIRECTION ? Stream-power model ?
License: Apache-Lizenz
Language: Englisch/English
Issued: 2026-01-01
Last harvest: 07.10.2026 00:35
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