Date: Friday, 10 September 2022
 

Monitoring Team: Peter, Nick, David, Ian and John
 

Analysis & Report: David Bills-Thompson, PFCG Technical Officer and Data Co-ordinator

 

Commentary: A notable result is the new record high level of sand detected at post 1 (Little East Beach)

Post 2 shows also shows an increase since last year but is still well below average (East Beach toilet block).

Post 3 is below average and has lost some sand since the last measurement in July this year (Manifold St.).

 

Between posts 7 - 9 results show a positve accretion of sand.

 

The sand height at post 10 recorded a new low compared to all previous measurements. This result was independently confirmed with a validation measurement that was within 3cm of the VCMP calculated value. The new low level detected at post 10 is only at the post; beyond 4m, sand elevations are above all previous measurements. 

 

Note the chart for post 10 has experimental new information incorporated in the legend.
For the first three dates for either drone or laser measurements, a spot height percentage is given.The percentage height is measured relative to the Minimum (from all statistics as per the date range in the spreadsheet) at that distance from the post.
This percentage height is intended as a quick guide to the beach status at that point; in this case, the point is set at 5m in front of the post. This distance is adjustable in the Control Panel of the spreadsheet. If this feature is extended to all posts, it will be an individual adjustment for each post and is likely to be between 5m and 15m.

Post 11 has gained sand since the previous reading in May this year and is now at an average level. Comment: Between Post 10 and 11, two Berms have formed which indicates that much of the sand build up to date is still protecting the primary dune and has not been eroded by recent storm surges. It is likely that the most recent storm event was less severe than the previous surge.

Post 12 is still below average and has lost sand since May 2022 but remains higher than the measurement in April this year. Comment at post 12: There is a 25cm Berm 30cm in front of the post.

Conditions were cold and windy and monitoring at the far distances was often done in surging knee deep water.

My thanks and appreciation to the rest of the team for excellent work.
 

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