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Messages - epihua

Using SLAMM / Re: Salinity Raster
May 21, 2013, 06:03:57 PM
Thanks so much! I am particularly interested in "multiple linkages to external salinity models (one linkage by raster maps and one by river mile)". Look forward to seeing the related documentary in the near future!
Using SLAMM / Salinity Raster
May 16, 2013, 08:12:58 PM
In page 37 of SLAMM 6.2 Technical Documentation, the map of Predicted Mean Tide Level Salinities for Port Susan Bay looks great. In my case, areas of estuarine water in the salinity raster are NODATA. Any suggestions?

I would be much appreciate it if someone can kindly share a picture about how to set the freshwater boundary and pathway.

Model Formulation & Parameters / Re: Dike Height
May 15, 2013, 11:25:42 PM
Very helpful! Many thanks!
Model Formulation & Parameters / Dike Height
May 14, 2013, 09:12:56 PM
I am a little confused about the new dike file. For a grid identified as dike, what is the relationship between its value in the dike location raster and that in the DEM file? Thanks.
Model Formulation & Parameters / Re: Dike
April 09, 2013, 07:51:54 PM
Very grateful for your detailed explanation. It is exciting to know the improvement on dike features in the new SLAMM. My only concern is how to get the information of dike height. Except for deriving it from LIDAR data, do you know any methods or databases that may lead to a reliable regional map of dike height, particularly for the SF bay? 
Model Formulation & Parameters / Re: Salt Pond
April 09, 2013, 07:43:13 PM
Thanks so much. The report is very helpful! Did you apply homogeneous 2-m dikes for all salt ponds for the entire simulation period in this study?

Model Formulation & Parameters / Dike
April 09, 2013, 12:55:36 AM

According to the Technical Documentation, (1) enclosed wetlands are assumed to be maintained in their initial conditions until there is greater than 2 meter inundation, at which time small dikes are assumed to fail (page 18), and (2) when land is protected by a dike, the accretion or sedimentation is assumed to be zero (page 14).

Should I assume that any diked wetland will have no change in its elevation and extent until a 2-m (or higher) sea-level rise is modeled? If I am only interested in scenarios below 2 meters, could I simply exclude diked wetlands from the modeling domain?

Also, why is the dike height set to be 2 meters. Could I change it? Could I even make dike height specific to each sub-site?



Model Formulation & Parameters / Salt Pond
April 09, 2013, 12:42:38 AM

I am wondering which land-cover category should be used to describe salt ponds in the San Francisco Bay, as they have no vegetation cover and their water depth is not directed influenced by tide.