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. 2021 Jan 1;7(1):eaba7282. doi: 10.1126/sciadv.aba7282

Fig. 2. Schematic diagrams for four major categories of marine-terminating glaciers, with cold, fresh polar water (PW) on top of warm, salty AW.

Fig. 2

(A) Glaciers in deep fjords with warm AW (DW) that undercuts the glacier face to affect basal resistance. (B) Glaciers with temporary floating extensions on a shallow ridge (SC), for which undercutting does not affect basal resistance. (C) Glaciers standing in shallow, cold waters (SC). (D) Glaciers develop long (>10 km) floating ice extensions (FE). Note that glacier and bed elevations, expressed in meters above sea level (m.a.s.l.), are approximations provided for illustration.