<P> In January 2013 an 18 kg (40 lb) meteorite was discovered frozen in ice on the Nansen ice field by a Search for Antarctic Meteorites, Belgian Approach (SAMBA) mission . </P> <P> In January 2015 reports emerged of a 2 - kilometre (1.2 mi) circular structure, supposedly a meteorite crater, on the surface snow of King Baudouin Ice Shelf . Satellite images from 25 years ago seemingly show it . </P> <P> Due to its location at the South Pole, Antarctica receives relatively little solar radiation . This means that it is a very cold continent where water is mostly in the form of ice . Precipitation is low (most of Antarctica is a desert) and almost always in the form of snow, which accumulates and forms a giant ice sheet which covers the land . Parts of this ice sheet form moving glaciers known as ice streams, which flow towards the edges of the continent . Next to the continental shore are many ice shelves . These are floating extensions of outflowing glaciers from the continental ice mass . Offshore, temperatures are also low enough that ice is formed from seawater through most of the year . It is important to understand the various types of Antarctic ice to understand possible effects on sea levels and the implications of global cooling . </P> <P> Sea ice extent expands annually in the Antarctic winter and most of this ice melts in the summer . This ice is formed from the ocean water and floats in the same water and thus does not contribute to rise in sea level . The extent of sea ice around Antarctica has remained roughly constant in recent decades, although the thickness changes are unclear . </P>

Is wilkes land in the eastern hemisphere or the western hemisphere