Representation of the (a) summer and (b) winter oceanic circulation within the Adélie region, East Antarctica.
MGT = Mertz Glacier Tongue (red dot on the Antarctica map); other acronyms indicate different water masses: Antarctic Surface Waters (AASW), Modified Circumpolar Deep Water (MCDW*), Dense Shelf Water (DSW) and Antarctic Bottom Water (AABW) explained below. [Credit: reprinted with permission from Snow et al. (2016, figure 4) ]. Click here here to enlarge the image.
Antarctica is separated from the deep Southern Ocean by a shallow continental shelf. Waters are exchanged between the deep ocean and the shallow shelf, forming the Antarctic cross-shelf circulation: Very dense waters leave the shelf as Antarctic Bottom Water (AABW) that will then flow at the bottom of all oceans. Meanwhile, relatively warm water from the Southern Ocean, Modified Circumpolar Deep W ...[Read More]