The web site lets you view the data that various users have submitted for code validation benchmarks. You can:
The web site contains modeling results for all the code validation benchmark problems. Each benchmark is a spontaneous dynamic rupture problem, where the computer code models the growth of an earthquake rupture by calculating the motions, stresses, and friction as a function of time. Most benchmarks are 3D, but there are also some 2D benchmarks. Detailed descriptions of all the benchmarks are available on the Code Validation Web Site.
For each benchmark, there are results from several modelers. Each modeler is identified by their user name on the web site, and usually by their full name as well. The main function of the web site is to allow easy comparison of results submitted by different modelers for the same benchmark.
Sometimes a modeler will submit several sets of results for a single benchmark, for example, by running the model with different element sizes or node spacings. Each set of results is called a version. The first version is identified by the modeler's user name, and subsequent versions are identified by names like username.2 and username.3 and so on. You can compare data from different versions, just as you can compare data from different modelers.
There are two types of data on the web site: (a) time-series files, and (b) rupture-front contour plots. The time-series files are further divided into on-fault files and off-fault files.
Each time-series file corresponds to a station, which is at a particular location in the model. You may think of the station as being like a synthetic seismometer. The station may be located either on-fault or off-fault.
A time-series file contains several data fields, and gives the value of each field at each time step in the calculation. For on-fault stations, the time-series file generally contains horizontal (along-strike) and vertical (along-dip) slip, slip rate, and shear stress, as well as normal stress. For off-fault stations, the time-series file generally contains horizontal (parallel to fault trace), normal (perpendicular to fault trace), and vertical displacement and velocity.
The station locations and data fields vary from one benchmark to the next. Refer to the documentation for each individual benchmark to find out which station locations, data fields, units, and sign conventions are used for the benchmark.
A rupture-front contour plot shows a series of contour curves on the fault surface. Each curve connects all the points that rupture at a given time. Contours are typically drawn at intervals of 0.5 second, and show how the rupture spreads over the fault surface.
If you are a registered user, you may click Login to View Data on the home page, and enter your username and password. Registered users have access to all the data on the web site.
If you are not a registered user, you may log in by clicking Public Area. No password is needed. The public area contains only data that each modeler has chosen to make public.
After logging in, you will see a list of benchmarks. Find the benchmark you want, and click Select.
You will then see a list of users who have submitted data for the benchmark. If a user has submitted multiple versions, then all the versions are listed.
You navigate through the site by clicking buttons on the web pages. Avoid using your browser’s Back or Forward buttons. If you use the Back or Forward buttons, you may get error messages from your browser.
You can use the web site to display data from a single user, and from a single version.
These instructions assume you are starting from the user list, which says "Select User(s)" at the top of the page.
When you graph time-series data, you can apply a low-pass filter to remove any high-frequency noise or oscillations. To do this, scroll down to the bottom of the page, enter the desired filter cutoff frequency in Hertz, and click Apply Changes. For additional information, see Graphing Preferences and Filtering.
The web site can plot time-series data from different stations on a single page, so you can compare them easily. It can also superimpose the graphs, for a very detailed comparison.
These instructions assume you are starting from the user list, which says "Select User(s)" at the top of the page.
The web site draws graphs for all the stations, and displays them on a single page for easy comparison. Each graph is shown in a different color.
Note: A maximum of twelve graphs fit on a single page. If you selected more than twelve stations, then they are displayed on several pages. There are buttons you can use to go to the next page, the previous page, the first page, and the last page.
To superimpose the graphs, scroll down to the bottom of the page. Check Superimpose graphs and then click Apply Changes. The web site redraws all the colored curves, on a single graph. It also displays a key showing which color is used for each station. For additional information, see Graphing Preferences and Filtering.
The web site can plot time-series data from different users and/or different versions on a single page, so you can compare them easily. It can also superimpose the graphs, for a very detailed comparison.
These instructions assume you are starting from the user list, which says "Select User(s)" at the top of the page.
The web site draws graphs for all the selected users and versions, and displays them on a single page for easy comparison. Each graph is shown in a different color.
Note: A maximum of twelve graphs fit on a single page. If you selected more than twelve users and versions, then they are displayed on several pages. There are buttons you can use to go to the next page, the previous page, the first page, and the last page.
To superimpose the graphs, scroll down to the bottom of the page. Check Superimpose graphs and then click Apply Changes. The web site redraws all the colored curves, on a single graph. It also displays a key showing which color is used for each user and version. For additional information, see Graphing Preferences and Filtering.
The web site can draw rupture-front contour plots from different users and/or version on a single page, so you can compare them easily. It can also superimpose the graphs, for a very detailed comparison.
These instructions assume you are starting from the user list, which says “Select User(s)” at the top of the page.
The web site draws rupture-front contour plots for all the selected users and versions, and displays them on a single page for easy comparison. Each plot is shown in a different color.
Note: A maximum of twelve plots fit on a single page. If you selected more than twelve users and versions, then they are displayed on several pages. There are buttons you can use to go to the next page, the previous page, the first page, and the last page.
To superimpose the contour plots, scroll down to the bottom of the page. Check Superimpose graphs and then click Apply Changes. The web site redraws all the colored curves, on a single graph. It also displays a key showing which color is used for each user and version. For additional information, see Graphing Preferences and Filtering.