Post by 4wd on Jan 4, 2019 19:48:06 GMT
This is a relatively new technique which uses laser scans from aircraft to show landscape features otherwise hidden by vegetation.
You can download the data for free and convert it yourself but the simplest way is to use this which works like google earth.
www.lidarfinder.com/
The bottom half of screen shows the silvery Lidar image and you can drag the division up and down.
Here it has been useful for looking at the features revealed in the dry summer, however it rather casts doubt as it seems likely that two glacial events scoured over the underlying rocks at right angles creating an unusual natural grid effect.
I notice it is a very good way to see old drain lines which might be rather useful.
A snag is that the whole country is not covered at present though.
Also in that basic viewer you don't always get the best interpretation, using the raw data you can tweak things more to adjust the effective angle of the 'lighting'.
You can download the data for free and convert it yourself but the simplest way is to use this which works like google earth.
www.lidarfinder.com/
The bottom half of screen shows the silvery Lidar image and you can drag the division up and down.
Here it has been useful for looking at the features revealed in the dry summer, however it rather casts doubt as it seems likely that two glacial events scoured over the underlying rocks at right angles creating an unusual natural grid effect.
I notice it is a very good way to see old drain lines which might be rather useful.
A snag is that the whole country is not covered at present though.
Also in that basic viewer you don't always get the best interpretation, using the raw data you can tweak things more to adjust the effective angle of the 'lighting'.
