Fjord calving fix#132
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This makes two adjustments: 1. When deciding if an edge should experience calving, include neighbors above sea level instead of just open ocean neighbors. This ensures fjord walls don’t “block” the calving expected at a cell based on its calvingVelocity 2. Adjust the scale_edge_length function to zero edges that are oriented in the opposite direction of the velocity. Previously orientation was ignored but this is now necessary to avoid calving at edges that have neighbors above sea level (item 1) facing the opposite direction as the velocity. # Please enter the commit message for your changes. Lines starting
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It leverages the existing specified_calving_velocity option and simply adds the flow velocity to the desired retreat velocity to obtain the appropriate calvingVelocity.
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Neither vector should ever have magnitude zero, and if it does, it should be an error.
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Specified-calving option moved to #149 and will need to be removed from this PR if this PR eventually moves forward. |
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This PR fixes calving in narrow fjords, which previously would occur at rates less than prescribed due to edges along fjord walls not being active for calving and reducing the calving flux.