| Summary: | edly became ungrounded in 2007 during its prolonged retreat. Visual observations showed that calving changed from a steady release of low‐volume bergs, to episodic flow‐ perpendicular rifting, propagation, and release of very large icebergs ‐ a style reminiscent of calving from ice shelves. Here, we compare passive seismic and photographic obser-vations through this transition to examine changes in calving. Mechanical changes accompany the visible changes in calving style post flotation: generation of seismic energy during calv-ing is substantially reduced. We propose this is partly due to changes in source processes. Citation: Walter, F., S. O’Neel
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