the distance moved by one of the Breiðamerkurjökull nodes shows us the glacier has started moving again – at a rate comparable to the previous autumn. Its also great that this prototype node has sent data so continuously – right through the winter!
We captured thousands of images using a quadcopter, Survey 3 camera and then created the model with Agisoft Photoscan. Calibration targets on the ground geo-referenced the model. This fly-through is a screen capture from their viewer. The model-making process took around five days on a quad-core 4.4GHz PC. Models will be produced each year to monitor changes but they also help visualise moraine formation. The images captured were about 7mm/pixel resolution.
The little Brinno camera we left on a monopod last October 2017 continued capturing images until the 9th of June 2018. Here is a frame from a sunny morning in March showing how much the ice drives over the moraine:
The camera managed this on four lithium AA batteries.
In preparation for deploying more systems in Iceland this summer – I updated our spare Piksi Multis and did a garden test. It performed very well!
I set them up to fix at 10Hz but report every 5 readings – so its closer to our slow system in Iceland. The fix hopped around within about 1.5cm – which is good for my garden as the sky box is not that wide.