A High Resolution, Three‐Dimensional View of the D‐28 Calving Event From Amery Ice Shelf With ICESat‐2 and Satellite Imagery

Tabular calving events occur from Antarctica's large ice shelves only every few decades, and are preceded by rift propagation. We used high-resolution imagery ICESat-2 data to determine the propagation rates for three active rifts on Amery Ice Shelf (AIS; T1, T2, E3) observe of D-28 September 25, 2019 along T1. AIS front advance accelerated downstream T1 in years before calving, possibly increasing stress at tip. experienced significant acceleration 12 days coinciding with a jump E3. ICESat-2's high resolution repeat acquisitions 91 allowed analysis after detection where it was not visible as ∼1 m surface depression, suggesting that propagates basal fracture. Our results show can provide process-scale information about iceberg calving.