Model:SimClast
From CSDMS
SimClast
Introduction
History
Papers
SimClast Questionnaire
Contact Information
Model: | SimClast |
Contact person: | Rory Dalman |
Institute: | Delft University of Technology |
City: | Delft |
Country: | The Netherlands |
Email: | r.a.f.dalman@tudelft.nl |
2nd person involved: | -- |
3rd person involved: | -- |
Model description
Model type: | Modular model for the terrestrial, coastal and marine domain. |
Description: | SimClast is a basin-scale 3D stratigraphic model, which allows several interacting sedimentary environments. Processes included are; fluvial channel dynamics and overbank deposition, river plume deposition, open marine currents, wave resuspension, nearshore wave induced longshore and crosshore transport. This combined modelling approach allows insight into the processes influencing the flux of energy and clastic material and the effect of external perturbations in all environments. Many governing processes work on relatively small scales, e.g. in fluvial settings an avulsion is a relatively localised phenomenon. Yet, they have a profound effect on fluvial architecture. This means that the model must mimic these processes, but at the same time maintain computational efficiency. Additionally, long-term models use relatively large grid-sizing (km scale), as the area to be modelled is on the scale of continental margins. We solve this problem by implementing! the governing processes as sub-grid scale routines into the large-scale basin-filling model. This parameterization greatly refines morphodynamic behaviour and the resulting stratigraphy. This modelling effort recreates realistic geomorphological and stratigraphic delta behaviour in river and wave-dominated settings. |
Technical information
Supported platforms: | Windows |
Programming language: | Fortran77, Fortran90 |
Model was developed started from: | 1998 and development still takes place |
To what degree will the model become available: | As code, teaching tool and executable |
Current license type: | GPL v2 |
Memory requirements: | 1GB |
Typical run time: | 5 minutes up to 24 hours |
Input / Output description
Input parameters: |
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Input format: | ASCII |
Output parameters: | 3D stratigraphy (age, provenance, grainsize, peat fraction) Morphodynamic maps of grainsize, discharge, sediment erosion and deposition |
Output format: | ASCII |
Post-processing software (if needed): | no |
Visualization software (if needed): | yes, Matlab and Surfer |
Process description
Processes represented by model: |
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Key physical parameters & equations: | tba |
Length scale & resolution constraints: | SimClast can theoretically be used on a length scale upwards of 20 kms, the upper limit is dependant on memory and processing restrictions. Typical length scales vary from 25 to 500 km. The highest resolution is mainly dependant on the use of intracellular fluvial deposition, as described in Dalman & Weltje (2008) this restricts the minimum cell size to 4 kms. Recent addition of floodplain process reduces this to 500 m. |
Time scale & resolution constraints: | Total time scale is merely dependant on computing time, typically on the order of several thousands to 100,000 years. Time steps are restricted to 1 year. |
Numerical limitations and issues : | tba |
Testing
Available calibration data sets: | tba (see current work in progress) |
Available test data sets: | For now only a basic synthetic surface. |
Ideal data for testing: | ClastSim is ideally used for field tests, a preferably well-studied area with some knowledge of the sediment budget is preferred. Most continental to shallow marine clastic coastal systems without too much tidal influence can be used. |
User groups
Currently or plans for collaborating with: | Current work in progress, will be updated when ready; Holocene development of the Rhine-Meuse delta (Utrecht University). Late Quaternary morphology and stratigraphy of the Northern Adriatic Basin. Large-scale stratigraphic patterns on the Vietnam shelf since the LGM (University of Kiel). |
Documentation
Key papers of the model: | Dalman, R.A.F., & Weltje, G.J., 2008. Sub-grid parameterisation of fluvio-deltaic processes and architecture in a basin-scale stratigraphic model. Computers & Geosciences, Computers & Geosciences; Predictive Modeling in Sediment Transport and Stratigraphy. Volume 34, Issue 10, October 2008, Pages 1370-1380 |
Is there a manual available: | no |
Model website if any: | -- |
Additional comments
Comments: | -- |