_:b1218013 . _:b1218013 . _:b1218013 . _:b1218013 "web:http://www.antarctica.ac.uk/apc/genericterms.html"^^ . _:b1218013 "Fissure at the junction between an inland ice sheet, ice piedmont or ice rise and an ice shelf, the latter being subject to the rise and fall of the tide."^^ .