Southwest Anvers Island and Palmer Basin
Southwest Anvers Island and Palmer Basin is a 3275 km2Antarctic Specially Managed Area (ASMA 7). It lies towards the northern end of the Antarctic Peninsula, encompassing the south-western coastline of Anvers Island, in the Palmer Archipelago, with the adjacent deep marine waters of the Palmer Basin, the shallower Bismarck Strait, and fringing island groups.
Features of the south-west coastline of Anvers Island include the United States’ Palmer Station on Arthur Harbour - an LTER site and the principal logistical centre for research within AMSA 7, as well as the ice cliffs of the Marr Ice Piedmont, the ice-free Capes Monaco and Lancaster, and Biscoe Point. The waters of the Palmer Basin extend to a maximum depth of over 1400 m and are surrounded by shallower waters mostly no more than 600 m deep.
The island groups include the Rosenthal and Joubin Islands to the north of the Basin, as well as the Wauwermans, Dannebrog and Vedel Islands of the Wilhelm Archipelago to the east and south. The area also contains several small coastal islands in the vicinity of Cape Monaco and Palmer Station. Sixteen sites within the area have had access to them restricted in order to protect their natural values and others have been identified as Important Bird Areas. Two have been given additional protection as Antarctic Specially Protected Areas – Litchfield Island (ASPA 113) and Biscoe Point (ASPA 139).
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