I am a researcher in university and there are some questions when I use efdc,especially the output files.Among the output files there comes a velocity output called “U3DTSxxx”.I am confused that when I plot the time series in Matlab and I find that during the latter time fraction the velocity appears positive at one moment and negative at the next moment.And it appears that periodically.

Any answers will be helpful!

Hi,

There are three kind of current velocities that can be exported from the EFDC model results. These are magnitude velocity, x-component and y-component velocities. The magnitude velocity should be possible always while the x- and y-component have both positive and negative values. Please make sure that you extract and plot the correct value of velocity. Your plot seems like x- and y-components.

Hope this helps.

Regards,