Sad to see this beautiful #Worcester #canal -side weeping willow brought down by #stormdarragh. Still a lot of trunk remaining so I'll hope to see regrowth this spring.

In London for @geolsoc.bsky.social NSGG Recent Advances in #Archaeology #Geophysics. Essential conference preparation in progress.

You forgot to include a legend...

I missed the 'Continue Thread' button 🙄 Still new to this place 🙂

Ring of Brodgar, Orkney

Visualizing terrain curvature can reveal and characterize subtle #archaeology features on steep ground.

This is a drone #photogrammetry survey of British Camp #hillfort on the #Malvern Hills. Red is convexity, blue is concavity, greyscale is steepness. Created using #QGIS and other #osgeo tools.

Before and after comparison

Here's a little experiment on using data science to accentuate subtle colour differences between archaeological features.

Decorrelation stretch is a statistical method that aims to identify and remove covariance between colour components, increasing the visual separation of different deposits.