Model:BRaKE

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BRaKE

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Summary Contact Technical specs In/Output Process Testing Other Component info Also known as Blocky River and Knickpoint Evolution Model Model type Single Model part of larger framework Note on status model Date note status model Incorporated models or components: Spatial dimensions 1D Spatial extent Watershed-Scale, Reach-Scale Model domain One-line model description Computes evolution of a bedrock river longitudinal profile in the presence of large, hillslope-derived blocks. Extended model description BRaKE is a 1-D bedrock channel profile evolution model. It calculates bedrock erosion in addition to treating the delivery, transport, degradation, and erosion-inhibiting effects of large, hillslope-derived blocks of rock. It uses a shear-stress bedrock erosion formulation with additional complexity related to flow resistance, block transport and erosion, and delivery of blocks from the hillslopes. Keywords: bedrock channel erosion, bedrock incision, River profile, Channel-hillslope coupling, Name Charles Shobe Type of contact Model developer Institute / Organization Department of Geological Sciences, University of Colorado Postal address 1 UCB 399 Postal address 2 Town / City Boulder Postal code 80309-0399 State Colorado Country United States Email address charles.shobe@colorado.edu Phone 8048404514 Fax Supported platforms Unix, Linux, Mac OS, Windows Other platform Programming language Python Other program language Code optimized Single Processor Multiple processors implemented Nr of distributed processors Nr of shared processors Start year development 2015 Does model development still take place? Yes If above answer is no, provide end year model development Code development status When did you indicate the 'code development status'? Model availability As code Source code availability (Or provide future intension) Through web repository, Through CSDMS repository Source web address https://github.com/cmshobe/brake-model Source csdms web address Program license type LGPL Program license type other Memory requirements Typical run time minutes to hours Describe input parameters Domain size/length/spacing, time to run, timestep, hillslope response timescale, baselevel lowering rate, bed erodibility, block erodibility, bed critical shear stress, block critical shear stress, block delivery coefficient, initial block size, roughness length scale, channel width, mean discharge, discharge variability, and data recording time interval. Input format Other input format Describe output parameters Elevation and slope arrays as well as optional information about bed cover and shear stress distributions, as well as block size distributions and incision rate records. Output format Other output format .npy array data structures Pre-processing software needed? No Describe pre-processing software Post-processing software needed? No Describe post-processing software Visualization software needed? No If above answer is yes Other visualization software Describe processes represented by the model Fluvial bedrock erosion; hillslope block delivery; block transport and degradation Describe key physical parameters and equations Shear stress-driven fluvial erosion, primarily modulated by bed erodibility, critical bed shear stress, block delivery, and block size. Describe length scale and resolution constraints This model is intended for a CHANNEL REACH of CONSTANT DRAINAGE AREA. Describe time scale and resolution constraints There is no conservation of mass on adjacent hillslopes, which presents a natural time limitation of ~10^6 years. Describe any numerical limitations and issues Model is solved implicitly, but can become inaccurate at very large (~1000 year) timesteps. When baselevel forcing is mild and block effects are significant, slope-inversion instabilities can develop. The model catches these and will not continue running. Describe available calibration data sets Upload calibration data sets if available: Describe available test data sets Upload test data sets if available: Describe ideal data for testing Do you have current or future plans for collaborating with other researchers? Is there a manual available? No Upload manual if available: Model website if any Model forum / discussion board Comments This model was initially published as Shobe et al in Geophysical Research Letters, May 2016: http://onlinelibrary.wiley.com/doi/10.1002/2016GL069262/abstract Other publications are in preparation. This part will be filled out by CSDMS staff OpenMI compliant Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "Code openmi compliant or not" property. BMI compliant Not yet"Not yet" is not in the list (Yes, No but planned, No but possible, No not possible) of allowed values for the "BMICompliant" property. WMT component Not yet"Not yet" is not in the list (Yes, In progress, No but possible, No not possible) of allowed values for the "Code CMT compliant or not" property. PyMT component Is this a data component Can be coupled with:

Model info Authors Charles Shobe Source code Model citations Nr. of publications: 1 Total citations: 77 h-index: 1 m-quotient: 0.1 QR-code Link to this page Other models by author BRaKE BlockLab Drainage Density ErosionDeposition SPACE

Introduction

BRaKE is the "Blocky River and Knickpoint Evolution" model developed by Charles Shobe in collaboration with Greg Tucker and Bob Anderson at the University of Colorado, Boulder.

History

• Summer 2015: Development started
• May 2016: Descriptive paper published
• May 2017: Submitted to CSDMS model repository
• Ongoing: BMI wrapping

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