In total there are four rigs, of which three are mini rigs. In the picture below you can see one of the mini rigs. The rig contains several devices to measure flow velocity, suspended sediment concentration and pressure. On top of the rig a large battery and data logger are attached. The devices only measure when they are submerged, this is controlled by a float switch.
The mini rig. The large grey cilinder is the battery/data storage.
With the measurements of the frame, MSc student Florian investigates infragravity waves. The normal waves you see propagating towards the beach, are called gravity waves. But there are also longer waves which you can occasionally see when a swash reaches further landward, approximately every 30-300 seconds. There is still some debate about the behavior of infragravity waves in shallow water and how they play a role in sediment transport. These waves are believed to be important for beach erosion during storms.
To find out more about our colleagues from Delft, who are also studying the Sand Motor, visit: http://megapex.blogspot.nl
Marieke
Questions or suggestions about the field campaign? Send an e-mail to: uusandmotor [at] gmail.com
To find out more about our colleagues from Delft, who are also studying the Sand Motor, visit: http://megapex.blogspot.nl
Marieke
Questions or suggestions about the field campaign? Send an e-mail to: uusandmotor [at] gmail.com