The split with Iceberg A-68 may result in a change in the ice flow velocity of Larsen C Ice Shelf. In this project, the flow velocity of Larsen C Ice Shelf is monitored by using Sentinel-1 SAR images. Sentinel-1A and Sentinel-1B observed surface every 12 days with a time difference of 6 days. Therefore, if SAR images can be obtained from the two satellites, the ice flow velocity for 6 days will be able to be observed.
To observe the ice flow velocity of Larsen C Ice Shelf from Sentinel-1A/B IW mode SAR images, the offset-tracking technique is applied. Displacements in the range and the azimuth directions are figured out by the offset-tracking technique. The ice flow velocity in the flow direction is calculated by using the two displacement components.
In this project, the flow velocity of Larsen C Ice Shelf has been monitored since September 2016, which is 8 months before Iceberg A-68 was calved from the ice shelf.