Enhancement: provide a datum parameter

[wmheigl]

In borehole seismic applications, one often has velocity information over certain depth interval only and one is generally not interested in surface phenomena. It would be advantageous to have a datum parameter that allows to have the top of the computational grid not at z=0 but at some chosen depth, thus reducing the size of the computational grid and the computing time.

[andersp]

Thanks for your comment, @wmheigl. You can provide a topography file with negative elevation to remove that part of the computational domain. However, a free surface boundary condition will still be imposed on the top boundary, which probably is not what you want?

[wmheigl]

That is correct, Anders. For my needs I would need absorbing boundaries all around the model. It’s great to see that you follow up the communities suggestions.

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On Jan 13, 2022, at 11:10 AM, Anders Petersson ***@***.***> wrote: Thanks for your comment, @wmheigl <https://github.com/wmheigl>. You can provide a topography file with negative elevation to remove that part of the computational domain. However, a free surface boundary condition will still be imposed on the top boundary, which probably is not what you want? — Reply to this email directly, view it on GitHub <#100 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AHXVTXLNMWMRCCFGSRLA2ZDUV4BQHANCNFSM5CEFWMOA>. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>. You are receiving this because you were mentioned.