The impact of different gridding methods on catchment geomorphology and soil erosion over long timescales using a landscape evolution model

2006 ◽  
Vol 31 (8) ◽  
pp. 1035-1050 ◽  
Author(s):  
G. R. Hancock
Keyword(s):  
Soil Erosion ◽  
Landscape Evolution ◽  
Evolution Model ◽  
Long Timescales ◽  
The Impact

The impact of depression removal on catchment geomorphology, soil erosion and landscape evolution

2008 ◽  
Vol 33 (3) ◽  
pp. 459-474 ◽  
Author(s):  
G. R. Hancock
Keyword(s):  
Soil Erosion ◽  
Landscape Evolution ◽  
The Impact

Predicting soil organic carbon movement and concentration using a soil erosion and Landscape Evolution Model

Geoderma ◽  
2021 ◽  
Vol 382 ◽  
pp. 114759
Author(s):  
G.R. Hancock ◽  
T. Wells
Keyword(s):  
Soil Erosion ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Landscape Evolution ◽  
Evolution Model

An evaluation of an enhanced soil erosion and landscape evolution model: a case study assessment of the former Nabarlek uranium mine, Northern Territory, Australia

2008 ◽  
Vol 33 (13) ◽  
pp. 2045-2063 ◽  
Author(s):  
G. R. Hancock ◽  
J. B. C. Lowry ◽  
D. R. Moliere ◽  
K. G. Evans
Keyword(s):  
Soil Erosion ◽  
Landscape Evolution ◽  
Northern Territory ◽  
Evolution Model ◽  
Uranium Mine

scholarly journals HyLands 1.0: a hybrid landscape evolution model to simulate the impact of landslides and landslide-derived sediment on landscape evolution

2020 ◽  
Vol 13 (9) ◽  
pp. 3863-3886
Author(s):  
Benjamin Campforts ◽  
Charles M. Shobe ◽  
Philippe Steer ◽  
Matthias Vanmaercke ◽  
Dimitri Lague ◽  
...  
Keyword(s):  
Sediment Transport ◽  
Landscape Evolution ◽  
Flow Direction ◽  
Spatial Scales ◽  
Sediment Dynamics ◽  
Evolution Model ◽  
Sediment Delivery ◽  
River Dynamics ◽  
River Incision ◽  
The Impact

Abstract. Landslides are the main source of sediment in most mountain ranges. Rivers then act as conveyor belts, evacuating landslide-derived sediment. Sediment dynamics are known to influence landscape evolution through interactions among landslide sediment delivery, fluvial transport and river incision into bedrock. Sediment delivery and its interaction with river incision therefore control the pace of landscape evolution and mediate relationships among tectonics, climate and erosion. Numerical landscape evolution models (LEMs) are well suited to study the interactions among these surface processes. They enable evaluation of a range of hypotheses at varying temporal and spatial scales. While many models have been used to study the dynamic interplay between tectonics, erosion and climate, the role of interactions between landslide-derived sediment and river incision has received much less attention. Here, we present HyLands, a hybrid landscape evolution model integrated within the TopoToolbox Landscape Evolution Model (TTLEM) framework. The hybrid nature of the model lies in its capacity to simulate both erosion and deposition at any place in the landscape due to fluvial bedrock incision, sediment transport, and rapid, stochastic mass wasting through landsliding. Fluvial sediment transport and bedrock incision are calculated using the recently developed Stream Power with Alluvium Conservation and Entrainment (SPACE) model. Therefore, rivers can dynamically transition from detachment-limited to transport-limited and from bedrock to bedrock–alluvial to fully alluviated states. Erosion and sediment production by landsliding are calculated using a Mohr–Coulomb stability analysis, while landslide-derived sediment is routed and deposited using a multiple-flow-direction, nonlinear deposition method. We describe and evaluate the HyLands 1.0 model using analytical solutions and observations. We first illustrate the functionality of HyLands to capture river dynamics ranging from detachment-limited to transport-limited conditions. Second, we apply the model to a portion of the Namche Barwa massif in eastern Tibet and compare simulated and observed landslide magnitude–frequency and area–volume scaling relationships. Finally, we illustrate the relevance of explicitly simulating landsliding and sediment dynamics over longer timescales for landscape evolution in general and river dynamics in particular. With HyLands we provide a new tool to understand both the long- and short-term coupling between stochastic hillslope processes, river incision and source-to-sink sediment dynamics.

Modelling soil erosion with a downscaled landscape evolution model

2012 ◽  
Vol 37 (10) ◽  
pp. 1046-1055 ◽  
Author(s):  
Tom J. Coulthard ◽  
Greg R. Hancock ◽  
John B. C. Lowry
Keyword(s):  
Soil Erosion ◽  
Landscape Evolution ◽  
Evolution Model

scholarly journals Hillslope and point based soil erosion – an evaluation of a Landscape Evolution Model

2019 ◽  
Vol 44 (5) ◽  
pp. 1163-1177 ◽  
Author(s):  
G.R. Hancock ◽  
T. Wells ◽  
C. Dever ◽  
M. Braggins
Keyword(s):  
Soil Erosion ◽  
Landscape Evolution ◽  
Evolution Model

scholarly journals r.sim.terrain 1.0: a landscape evolution model with dynamic hydrology

2019 ◽  
Vol 12 (7) ◽  
pp. 2837-2854 ◽  
Author(s):  
Brendan Alexander Harmon ◽  
Helena Mitasova ◽  
Anna Petrasova ◽  
Vaclav Petras
Keyword(s):  
Steady State ◽  
Soil Erosion ◽  
Overland Flow ◽  
Landscape Planning ◽  
Landscape Evolution ◽  
Spatial Scales ◽  
Evolution Model ◽  
Short Term ◽  
Military Installation ◽  
Ephemeral Gullies

Abstract. While there are numerical landscape evolution models that simulate how steady-state flows of water and sediment reshape topography over long periods of time, r.sim.terrain is the first to simulate short-term topographic change for both steady-state and dynamic flow regimes across a range of spatial scales. This free and open-source Geographic Information Systems (GIS)-based topographic evolution model uses empirical models for soil erosion and a physics-based model for shallow overland water flow and soil erosion to compute short-term topographic change. This model uses either a steady-state or unsteady representation of overland flow to simulate how overland sediment mass flows reshape topography for a range of hydrologic soil erosion regimes based on topographic, land cover, soil, and rainfall parameters. As demonstrated by a case study for the Patterson Branch subwatershed on the Fort Bragg military installation in North Carolina, r.sim.terrain simulates the development of fine-scale morphological features including ephemeral gullies, rills, and hillslopes. Applications include land management, erosion control, landscape planning, and landscape restoration.

Sign in / Sign up

Export Citation Format

Share Document