NG4 is a potential super-site, which acts as back-up if ice conditions during NG1, NG2, or NG3 prohibit extensive sampling. The site is located at the outlet of Zachariae Isstrom Glacier, which has recently undergone large scale melting.
Detailed oceanographic surveys in this area will be able to address the effect of glacial outflow on marine physics, chemistry and biology. Possibilities for terrestrial sampling include ice cores, lake sediment cores, lake / snow / ice microbiology, drone surveys, and collection of rare vegetation ‘baseline data’. The ice breaker 50 Let Pobedy will not be accompanying the AT during this part of the expedition.