Movie:Effects of high horizontal displacement rates on landscape evolution & pull-apart basins formation
Information Page: Effects of high horizontal displacement rates on landscape evolution & pull-apart basins formation
Play Movie
Effects of high horizontal displacement rates on landscape geomorphological evolution.
Key Attributes
| Domain: | terrestrial |
| Keywords: | 3D displacements |
| Keywords: | landscape evolution |
| Model name: | Animation model name |
| Name: | Tristan, Patrice, Salles, Rey |
| Where: | https://www.youtube.com/watch?v=20Z92nnnpQY |
| When: | 15s |
Short Description
Grade level: Under graduate (13-16), Graduate / Professional
Statement: Effects of high horizontal displacement rates on landscape geomorphological evolution.
Abstract: In this example, we impose over 2 Millions years a 3D displacement field produced with Underworld over an initial flat surface. We consider both hillslope (creep) and overland flow processes (detachment limited) induced by an uniform precipitation rate of 1 m/yr.
The 3D displacement field obtained from Underworld (a geodynamics model) gives us an average rate which is updated every 5,000 years. The model is initially a 256 km square box at a resolution of 1 km. The geodynamics model boundary conditions forces the formation of pull-apart basins which are depressions that are bounded by sideways-stepping, strike-slip faults parallel to their length.
With the surface process model Badlands we test the effects of high horizontal displacement rates on landscape geomorphological evolution.
The internal structure of these basins is highly variable both in space and time owing to complex stress fields and heterogeneous crustal rheology around the termination of the delimiting faults. This complexity has led to several unresolved problems regarding the kinematics and dynamics of pull-apart basins. Using the coupling between Badlands and Underworld it is now possible to test the time-dependent deformation patterns within pull-apart basins, and the relation of these basins with the adjacent deformed structural domains.
Theory
Basin and Landscape Dynamics (Badlands) is a parallel TIN-based landscape evolution model, built to simulate topography development at various space and time scales. The model is presently capable of simulating hillslope processes (linear diffusion), fluvial incision ('modified' SPL: erosion/transport/deposition), spatially and temporally varying geodynamic (horizontal + vertical displacements) and climatic forces which can be used to simulate changes in base level, as well as effects of climate changes or sea-level fluctuations.
Links
http://github.com/badlands-model
References
The part "]]" of the query was not understood.</br>Results might not be as expected.
