Maps of the study area showing the ice shelf and coastal features with numbered stations located on A) Moderate Resolution Imaging Spectroradiometer (MODIS) Terra (250 m resolution) image from 2 January 2011 showing sea ice and land ice (white) and open water (black) in the Amundsen Sea region; and on B) bathymetric contours (gray) from Nitsche et al. (2007), with the sea ice margin on 2 January 2011 shown as a white dotted line. The position of the moored sediment trap (Ducklow et al., 2015) is denoted by MT.