What is this data? Answer below the Pic
This is the Humber, showing the region immediately north of South Ferriby, with Read’s Island and the Old Warp sandbank.
The background is a visualisation of LiDAR data, a high resolution laser scan of ground heights. It’s made up of several scans over the period 1998 to 2016.
The green dots and red lines show the location of a bathymetric survey performed in 2016. This uses an instrument called a multibeam which scans the surface below water, s the green dots show the location of the channel used by shipping in 2016.
It’s clear from the background data that when the LiDAR scan was taken there was no channel, so at some point the channel in the Humber has shifted and eroded into the sand bank. The Humber is indeed dynamic, and this causes problems when we try and predict what will happen in estuaries using computer models which do not allow for changes like this.
All data available via the Environment Agency’s Open Government License portal.