It was an interesting piece, and fun to try and work out some numbers on the things we thought we knew but couldn’t be certain about - take a look!

Normally disconnected beaches round prominent headlands were still filled with spoil from updrift collieries, and the timing of changes along the coast was not uniform showing the lag effect as sediment moved south. Now we see massive erosion of the spoil platform as the beaches return to “normal”

We knew from historic maps this de facto mega nourishment (acknowledging the prolonged timescale) caused massive progradation, and anecdotally we heard about rapid retreat when tipping ceased. We used CoastSat to look at this in more detail and saw some initial retreat rates reached *12 m per year*

No one has ever really quantified the amount of sediment that had been dumped so we did some digging and estimate at least *39 million cubic metres* in the 20th Century (after converting from weight to volume using some of our own measurements of spoil density)

Hi Robbi - literally just joined this platform and would love to be included!