The swell from the Tohoku tsunami was likely only a foot high (30 cm) when it reached the Sulzberger Ice Shelf, but the consistency of the waves created enough stress to cause the calving.
During the weekend, the rest of the uplifted ice broke away (bottom picture) in the biggest calving in the lake's 35-year history.
周末期间，其余被抬升的冰在该湖35来最大的裂冰中脱离了冰川(下图)。
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By itself, this breakup was not dramatic, but it continued a pattern of calving and retreat followed by ice flow acceleration that began nearly a decade ago.