Iceberg Tracker moves on but seems in trouble

Iceberg tracker temperatures from 9/8/16 to 7/10/16

Iceberg tracker temperatures from 9/8/16 to 7/10/16

We have been checking the iceberg tracker temperature as one way of telling if it is in the sea is a flatter daily variation in temperatures. Here you can see it did regularly read sub-zero at midnight then warmer an noon. Recently however it is showing mainly positive temperatures.

iceberg tracker locations up to 7/10/16

iceberg tracker locations up to 7/10/16

After spending weeks among the small islands in the centre of this map – it has moved south until reaching land again. This dramatic movement may be because the iceberg has broken up.

View of the icebergs when the tracker was deployed

this shows the glacier-sea front where icebergs calve (Photo: Formula E)

this shows the glacier-sea front where icebergs calve (Photo: Formula E)

The sea near the glacier - with a variety of icebergs (Photo Formula E)

The sea near the glacier – with a variety of icebergs (Photo: Formula E)

Formula E driving on a glacier in Greenland. This photo shows the icebergs in the sea - like the one we are tracking from here. Photo courtesy Formula E team.

Formula E car driving on a glacier in Greenland. This photo shows the icebergs in the sea – like the one we are tracking from here. Photo courtesy Formula E team.

Iceberg tracker

This is a GPS tracker we quickly built as a test of tracking icebergs – it uses Satellite (Iridium) short text messages to send its location to us every 12hrs. Inside is a large lithium battery pack. The photo below shows a water test in the sink – just in case it ends up in the sea. We used a unit from YB Tracking. More info later!

GPS satellite tracker we built for a test on a Greenland iceberg

GPS satellite tracker we built for a test on a Greenland iceberg

There’s a lot of energy in a glacial outflow river!

The outflow river bed remained almost unchanged while it was monitored from Autumn 2012 to Summer 2013. However, sometime between July 2013 and July 2014, the flow became violent enough to move massive boulders, as these images from the bridge camera show.

River bed with boulders.

River on 22 May 2013.

River bed with boulders.

River on 1 August 2014.

Note the big boulder – about 1 m high – right of centre in the foreground of the earlier image, which has been swept out of shot a year or so later.