Posted Mon, 14 Sep 2015 10:18:32 GMT by Praveenkhanna Udayakumar
Hello all
Do anyone know how to find Directional standard deviation or Directional spreading index for a Mean wave direction dataset?

Posted Mon, 14 Sep 2015 12:05:47 GMT by Ketaki Agrawal Junior Research Fellow

If you have the data for Peak wave period, Tp, then Directional spreading index would be the whole number of it. For Example if Peak wave period is 10.44sec then Spreading index is 10.

Also, you can refer to MIKE 21 SW user manual to know the directional standard deviation. There is a table provided from which you can correlate the standard deviation using spreading index values.
Posted Wed, 16 Sep 2015 06:53:15 GMT by Praveenkhanna Udayakumar
Thank for your reply. I want to know, what can be done if you dont have peak wave period data?

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