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Images: The Retreat of the Gualas Glacier

A team of researchers led by WHOI scientist Sébastien Bertrand took sediment samples from fjords in Chilean Patagonia to investigate how and why Gualas Glacier has been retreating. (Photo courtesy of Dr. Claudia Silva)

The positions of the Gualas Glacier in 1898 and 1944 are superimposed on a false color satellite image showing the glacier in 2010. (S. Bertrand et al.: Neoglacial fluctuations of Gualas glacier, Climate of the Past)

Maps of Gualas Glacier and Golfo Elefantes, an outlet fjord for glacial meltwater from the glacier, in Northern Chilean Patagonia. (a) Regional map with indication of the main towns (•) and regional volcanoes (white triangles). LSR is Laguna San Rafael. (b) Location of sediment cores JPC14 and PC27 extracted from Golfo Elefantes. The background is a false color 2001 Landsat image, in which dense vegetation is represented by bright red. Bathymetrical data are from SHOA (Hydrographic and Oceanographic Service of the Chilean Navy; bathymetric map Golfo Elefantes and Laguna San Rafael) and from Fernandez et al. (2012).(c) Landsat image (16 February 2010) of the ice fronts of Gualas and Reicher Glaciers. (S. Bertrand et al.: Neoglacial fluctuations of Gualas glacier, Climate of the Past )

WHOI postdoctoral fellow Sébastien Bertrand is at work on a project to assess how rapidly melting glaciers are transferring chemical elements from land to the coastal ocean and how these affect the health of downstream aquatic environments and people who depend on them. (Photo courtesy of Zakaria Ghazoui, Renard Centre of Marine Geology, University of Ghent, Belgium)