It's time to jump in the flume!

It was a scorching 35 degrees in the flume today, and so I couldn't resist but to go for a swim... It was quite refreshing despite the look on my face, although I did have to do some maintenance on rig 1. We raised the rig up 8 cm on the leg as the vectrino and EMCM was buried in the sediment. This is due to the foot of the leg creating a huge scour hole, resulting in the whole rig to drop. We are trying to think of a more effective solution, however until then we will just have to go swimming and adjust the height. 

Today's activities included raising the sea level once more another 10 cm, making the sea level 4.9 m. The profiles have shown a significant difference between the first run (SB4_1) and the last run (SB4_4), with the bar edging landwards by ~90 cm. As well as this figure 1 appears to be indicating that the mega ripples are migrating back, seawards.

Again the beach face continues to erode (fig.2), more so after SB4_2 (40 mins), and the berm is gradually being built up. 

Sea level = 4.9 m

Wave height = 0.8 m

Wave period = 6.0 s

Figure 1 - Cross-shore profile of test SB4_1 to 4 (4 hours), showing the elevation of the outer sand bar and mega ripples.

Figure 2 - Cross-shore profile of test SB4_1 to 4, showing the elevation of the beach face and berm.

Figure 3 - Cross-shore profile of test SB4_1 to 4 of the elevation of sediment across the whole beach.