Model:QDSSM: Difference between revisions
From CSDMS
No edit summary |
No edit summary |
||
| Line 24: | Line 24: | ||
|Spatialscale=Landscape-Scale | |Spatialscale=Landscape-Scale | ||
|One-line model description=Quantitative Dynamic Sequence Stratigraphic Model | |One-line model description=Quantitative Dynamic Sequence Stratigraphic Model | ||
|Extended model description=QDSSM is a 3D cellular, forward numerical model coded in Fortran90 that simulates landscape evolution and stratigraphy as controlled by changes in sea-level, subsidence, discharge and bedload flux. The model includes perfect and imperfect sorting modules of grain size and allows stratigraphy to be build over time spans of 1000 to million of years. | |Extended model description=QDSSM is a 3D cellular, forward numerical model coded in Fortran90 that simulates landscape evolution and stratigraphy as controlled by changes in sea-level, subsidence, discharge and bedload flux. The model includes perfect and imperfect sorting modules of grain size and allows stratigraphy to be build over time spans of 1000 to million of years. | ||
}} | }} | ||
{{Start model keyword table}} | |||
{{End a table}} | |||
{{Model technical information | {{Model technical information | ||
|Supported platforms=Windows | |Supported platforms=Windows | ||
| Line 34: | Line 35: | ||
|Does model development still take place?=Yes | |Does model development still take place?=Yes | ||
|Model availability=As code | |Model availability=As code | ||
|Program license type=Other | |Program license type=Other | ||
|Program license type other=NOT SURE | |Program license type other=NOT SURE | ||
|Memory requirements=-- | |Memory requirements=-- | ||
|Typical run time=On a 0.5 GHz Windows server, a 1000 time steps and 50 x 50 cell grids takes less than 2 minutes. The run time is never an issue. Getting the input files in place to make a run is the limiting factor. Memory becomes an issue with increasing size of the cell grid. | |Typical run time=On a 0.5 GHz Windows server, a 1000 time steps and 50 x 50 cell grids takes less than 2 minutes. The run time is never an issue. Getting the input files in place to make a run is the limiting factor. Memory becomes an issue with increasing size of the cell grid. | ||
}} | }} | ||
{{Input - Output description | {{Input - Output description | ||
|Describe input parameters=Input is in the form of values per time step for the following variables: files of rain fall, river inlet, sea-level, substratum thickness, tectonics, subsidence, while the model is calibrated through environmental coefficients, threshold slopes, threshold discharge, and set for interval time steps, number of time steps, environmental coefficients (m2/yr) and substratum grain size. | |Describe input parameters=Input is in the form of values per time step for the following variables: files of rain fall, river inlet, sea-level, substratum thickness, tectonics, subsidence, while the model is calibrated through environmental coefficients, threshold slopes, threshold discharge, and set for interval time steps, number of time steps, environmental coefficients (m2/yr) and substratum grain size. | ||
|Input format=ASCII | |Input format=ASCII | ||
|Describe output parameters=Maps of geomorphology, discharge, deposition, isopachs, stratigraphic thickness, grain size, contour, subsidence, and environment | |Describe output parameters=Maps of geomorphology, discharge, deposition, isopachs, stratigraphic thickness, grain size, contour, subsidence, and environment | ||
|Output format=Binary | |Output format=Binary | ||
|Pre-processing software needed?=No | |Pre-processing software needed?=No | ||
| Line 52: | Line 52: | ||
{{Process description model | {{Process description model | ||
|Describe processes represented by the model=Time-averaged sediment transport by long-range river transport based on discharge and gradient and on short range diffusive transport based on gradient and diffusion coefficients. Thresholds for slope and discharge can be set and act as a means to keep the flow from spreading over every adjacent grid cell allowing avulsion and bifurcation processes to be modeled. | |Describe processes represented by the model=Time-averaged sediment transport by long-range river transport based on discharge and gradient and on short range diffusive transport based on gradient and diffusion coefficients. Thresholds for slope and discharge can be set and act as a means to keep the flow from spreading over every adjacent grid cell allowing avulsion and bifurcation processes to be modeled. | ||
|Describe key physical parameters and equations=Basin digital elevation model. | |Describe key physical parameters and equations=Basin digital elevation model. | ||
|Describe length scale and resolution constraints=The model has been successfully used for simulation of river-shelf-slope configuration with a length of 0.005–400 km. The very short length scale refers to laboratory produced physical landscape models that have been used for calibration of avulsion and headward erosion processes. | |Describe length scale and resolution constraints=The model has been successfully used for simulation of river-shelf-slope configuration with a length of 0.005–400 km. The very short length scale refers to laboratory produced physical landscape models that have been used for calibration of avulsion and headward erosion processes. | ||
|Describe time scale and resolution constraints=Time steps of 10 – 1000 years depending on output range. Total range up to Millions of years. | |Describe time scale and resolution constraints=Time steps of 10 – 1000 years depending on output range. Total range up to Millions of years. | ||
|Describe any numerical limitations and issues=The model does not allow for compaction | |||
|Describe any numerical limitations and issues=The model does not allow for compaction | |||
}} | }} | ||
{{Model testing | {{Model testing | ||
|Describe available calibration data sets=Have successfully tested the model on the Colorado river shelf system, and along analogue models. | |Describe available calibration data sets=Have successfully tested the model on the Colorado river shelf system, and along analogue models. | ||
|Describe available test data sets=-- | |Describe available test data sets=-- | ||
|Describe ideal data for testing=Time-averaged values over 1000 years from seismic and sequence stratigraphic studies. | |Describe ideal data for testing=Time-averaged values over 1000 years from seismic and sequence stratigraphic studies. | ||
| Line 74: | Line 71: | ||
}} | }} | ||
{{Additional comments model | {{Additional comments model | ||
|Comments=Model was initially developed to interpolate between analogue experiments and landscape evolution done at the Utrecht University by George Postma and coworkers. | |Comments=Model was initially developed to interpolate between analogue experiments and landscape evolution done at the Utrecht University by George Postma and coworkers. | ||
}} | }} | ||
{{CSDMS staff part | {{CSDMS staff part | ||
| Line 80: | Line 77: | ||
|CCA component=No but possible | |CCA component=No but possible | ||
|IRF interface=No but possible | |IRF interface=No but possible | ||
|CMT component=Not yet | |||
}} | }} | ||
{{Start coupled table}} | |||
{{End a table}} | |||
{{End headertab}} | {{End headertab}} | ||
<!-- PLEASE USE THE "EDIT WITH FORM" BUTTON TO EDIT ABOVE CONTENTS; CONTINUE TO EDIT BELOW THIS LINE --> | <!-- PLEASE USE THE "EDIT WITH FORM" BUTTON TO EDIT ABOVE CONTENTS; CONTINUE TO EDIT BELOW THIS LINE --> | ||
Revision as of 17:33, 23 June 2011
