Abstract
The phenomenon of bore merging is investigated using two high-resolution laboratory experiments including
bichromatic and irregular wave conditions. The locations at which waves start merging are identified and the
hydrodynamic conditions in the vicinity of the merging points are examined. Bore merging takes place in the
inner surf zone for all conditions considered. The infragravity- to short-wave height ratio is close to or larger
than one at the merging point, indicating that bore merging occurs in a part of the surf zone that is already
dominated by the infragravity waves. Our data analysis is supplemented by numerical simulations that
confirms the importance of infragravity waves in the occurrence bore merging. Moreover, our simulations
suggest that bore merging has a very limited effect on the infragravity wave field. This casts doubts on the
importance of bore merging as an infragravity wave generation mechanism.
bichromatic and irregular wave conditions. The locations at which waves start merging are identified and the
hydrodynamic conditions in the vicinity of the merging points are examined. Bore merging takes place in the
inner surf zone for all conditions considered. The infragravity- to short-wave height ratio is close to or larger
than one at the merging point, indicating that bore merging occurs in a part of the surf zone that is already
dominated by the infragravity waves. Our data analysis is supplemented by numerical simulations that
confirms the importance of infragravity waves in the occurrence bore merging. Moreover, our simulations
suggest that bore merging has a very limited effect on the infragravity wave field. This casts doubts on the
importance of bore merging as an infragravity wave generation mechanism.
| Original language | English |
|---|---|
| Title of host publication | Proceedings Coastal Dynamics 2017 |
| Pages | 451-460 |
| Publication status | Published - 2017 |
| Event | Coastal Dynamics 2017 - Helsingør, Denmark Duration: 12 Jun 2017 → 16 Jun 2017 http://www.coastaldynamics2017.dk/ |
Conference
| Conference | Coastal Dynamics 2017 |
|---|---|
| Country/Territory | Denmark |
| City | Helsingør |
| Period | 12/06/17 → 16/06/17 |
| Internet address |
Keywords
- bore merging
- infragravity wave generation
- short and long wave interaction
- surf zone dynamics