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QUESTION ABOUT ALPHA & GRID ROTATION

DC
Dimitrios Chatzistratis, modified 2 Months ago.

QUESTION ABOUT ALPHA & GRID ROTATION

Capillary Posts: 1 Join Date: 7/4/18 Recent Posts
Hello,
I am pretty new to XBEACH model. I have a bathymetry grid with field measurements in a local coordinate system(attached figure) and
I try to estimate the alpha parameter in order to rotate the grid. From what I have understood going through the grid tutorial and also
applying the example tutorial about Terschelling I expected the alpha in my case to be around 40 degrees. However, the value I get is almost -200 (I interpret this value as that the coastline is facing SE).
Could you please say if my statements are correct and what could possibly cause this error?
Thank you in advance.

Kind Regards,
Dimitris