environmental impact assessment report appendix 3.1 …...environmental impact assessment report...

P:\Hong Kong\ENL\PROJECTS\356263 Lamma Dredging EIA\06 Deliverables\03 EIA\Appendices\Ch 03 WQ working\Appendix 3.1 -

Model Grid Refinement and Validation Results.doc

Improvement Dredging for Lamma Power Station Navigation Channel

Environmental Impact Assessment Report

Appendix 3.1 Model Grid Refinement and Validation Results





Annex A Comparison of Original UM Grid with Refined Model Grid





Comparing two grids: Original (blue) and Refined Model Grid (grey)





Annex B Comparison of Grid Parameters

P:\Hong Kong\ENL\PROJECTS\356263 Lamma Dredging EIA\06 Deliverables\03 EIA\Appendices\Ch 03 WQ working\Appendix 3.1 - Model Grid Refinement and Validation Results.doc



Resolution plot for internal domain of the refined grid. Land boundary of 2015 is shown. Note that different colour scales are used in the panels.




Resolution plot for original grid. Land boundary of 2015 is shown. Note that different colour scales are used in the panels.




Orthogonality plot for internal domain of the refined grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




Orthogonality plot for original grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




M Smoothness plot for internal domain of the refined grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




M Smoothness plot for original grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




N Smoothness plot for internal domain of the refined grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




N Smoothness plot for original grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




Aspect Ratio plot for refined grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.




Aspect Ratio plot for original grid. Land boundary of 2015 is shown. Note that the same colour scale is used in both panels.





Annex C Model Validation Results

Bathymetry [m]

< 50.5

< 46.0

< 41.5

< 37.0

< 32.5

< 28.0

< 23.5

< 19.0

< 14.5

< 10.0

< 5.5

< 1.0

P EW

SSDS EIA 03*

Lamma_E

Lamma_S

Locations of Monitoring Station





Annex D Model Validation (Comparison Plots)

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