Search found 4 matches

by SongCZ
Thu Jul 17, 2025 2:25 am
Forum: ROMS Sediment
Topic: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods
Replies: 6
Views: 897

Re: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods


Looking at the last few options in your CPP definitions file ...

/* bottom boundary layer closure,define only one of the following 5 */
#define UV_DRAG_GRID
#undef UV_LOGDRAG /*use to turn ON or OFF logarithmic bottom friction*/
#undef UV_QDRAG /*use to turn ON or OFF quadratic bottom friction ...
by SongCZ
Tue Jul 15, 2025 2:38 pm
Forum: ROMS Sediment
Topic: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods
Replies: 6
Views: 897

Re: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods


you are not providing a lot of info to help.
The 35 kg/m3 is a lot (!) of suspended sediment.
How is the model getting that much of a concentration? is this from resuspension? or from a lateral boundary?

The high concentration of suspended sediment (35 kg/m³) observed in the model is primarily ...
by SongCZ
Tue Jul 15, 2025 2:37 pm
Forum: ROMS Sediment
Topic: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods
Replies: 6
Views: 897

Re: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods

The high concentration of suspended sediment (35 kg/m³) observed in the model is primarily attributed to the riverine inputs. These inputs are implemented through river forcing, which is applied at the land-sea boundary within the river channel. Specifically, the river forcing is imposed via a SSF ...
by SongCZ
Tue Jul 15, 2025 2:51 am
Forum: ROMS Sediment
Topic: Unrealistic 1 m/day Sediment Deposition in River Channels During Floods
Replies: 6
Views: 897

Unrealistic 1 m/day Sediment Deposition in River Channels During Floods

Hello,
I am currently simulating sediment transport during extreme river floods with a suspended sediment concentration (SSC) of approximately 35 kg/m³ using the ROMS model. However, I am encountering an issue where the model predicts an unrealistic amount of sediment deposition in river channels ...