Model:Shoreline
From CSDMS
Shoreline
Introduction
History
Papers
Shoreline Questionnaire
Contact Information
Model: | Shoreline |
Contact person: | Scott Peckham |
Institute: | CSDMS, INSTAAR, University of Colorado |
City: | Boulder, CO |
Country: | USA |
Email: | Scott.Peckham@colorado.edu |
2nd person involved: | -- |
3rd person involved: | -- |
Model description
Model type: | Modular model for the coastal domain. |
Description: | Shoreline is a "line model" for modeling the evolution of a coastline as the result of wind/wave-driven longshore sediment transport. It is based on conservation of mass and a semi-empirical sediment transport formula known as the CERC formula. This model was specifically adapted for modeling the evolution of the coastline near Barrow, Alaska. |
Technical information
Supported platforms: | UNIX, Linux, Mac OSX, Windows |
Programming language: | IDL |
Model development started at: | 2003 and was finished in 2007. |
To what degree will the model become available: | Source code will be available, and will be available as teaching tool a |
Current license type: | Apache public license |
Memory requirements: | Standard |
Typical run time: | minutes to hours |
Input / Output description
Input parameters: | Initial coastline curve (array of xy pairs), depth of closure, a time series of wind speeds and angles, sediment grainsize, coastal bluff heights, a variety of configuration flags |
Input format: | ASCII |
Output parameters: | The new coastline at the end of the simulation is plotted. Results are not currently saved to files. |
Output format: | Graphical |
Post-processing software (if needed): | No |
Visualization software (if needed): | Yes, IDL |
Process description
Processes represented by model: | (1) Wave properties derived from wind speed, wind angle and equations that describe a "fully-developed" sea state. (2) Longshore sediment transport as modeled by the CERC or Kamphuis formulas. (3) Conservation of mass for sediment. (4) Simple methods to model cross-shore sediment transport. |
Key physical parameters & equations: | CERC formula for sediment transport rate (see Komar)
Kamphuis formula for sediment transport rate. |
Length scale & resolution constraints: | Spatial resolution of coastline is typically 1 to 50 meters. |
Time scale & resolution constraints: | The model is typically driven by hourly wind data (speed and angle) and models coastal change over a period of 10 to 100 years. |
Numerical limitations and issues : | The model cannot yet fully handle complex coastline geometries, such as those that cannot be represented (after rotation) by a single-valued function. |
Testing
Available calibration data sets: | This model is not calibrated, but uses physically-based (measurable) parameters and measured data for validation. See next box. |
Available test data sets: | Model was only used for modeling coastline change in the vicinity of Barrow, Alaska. Hourly wind data from a met station at the Barrow Airport was used to drive the model. High-resolution coastline data digitized from aerial photos by Manley et al. (2006) was used for initial and final coastlines. The latter was used for validation purposes. High-resolution DEMs were also used. |
Ideal data for testing: | High-resolution coastal change data, for example, digitized from aerial photography or measured with GPS. |
User groups
Currently or plans for collaborating with: | Have collaborated somewhat with Brad Murray and Andrew Ashton. |
Documentation
Key papers of the model: | Peckham, S.D. (2009) Modeling longshore transport and coastal erosion due to storms at Barrow, Alaska, to be submitted with model source code to Computers and Geosciences. |
Is there a manual available: | no |
Model website if any: | no |
Additional comments
Comments: | -- |