Global Vs30 Map Server

It is possible that you have found a bug. The only known bug affects dragging the rectangle in Firefox. If you think your issue is a bug in our code, please let us know.
The results of past calculations are stored in a table near the bottom of the page. Subsequent calculations will be appended to this table until you reload or leave the page. 
Most likely, you forgot to set a parameter. All of the inputs on the page are required. You must select at least one output type. 
If you are using an older internet browser, we cannot promise that the map-based tool will work properly. Disable JavaScript in your browser then try to run the tool again.