Monitoring of Grímsvötn and Skaftárkatlar

Regular monitoring of the elevation of the ice surface of Grímsvötn and the Skaftá cauldrons is carried out, both by field measurements and by remote sensing, to forecast jökulhlaups in Skeiðará/Gígjukvísl and Skaftá rivers. Elevation changes of the ice shelf of Grímsvötn lake has been monitored by the Institute of Earth Sciences, University of Iceland, for decades. The water volume of lake Grímsvötn is estimated based on the elevation, thickness and shape of the ice shelf, and the basal topography of the Grímsvötn caldera, which has been mapped with radio echo sounding measurements.      

 

The eastern Skaftár cauldron October 10, 2015. Photo: Oddur Sigurðsson.

The eastern Skaftár cauldron October 10, 2015. Photo: Oddur Sigurðsson.