UQYONUSI YaKhBASTAI ShIMOLI, az jihati masohat khurdtarin uqyonusi kurai Zamin buda, dar bayni materikhoi Evrosiyo va Amerikai Shimoli voqe gashtaast. Masohatash 13,1 mln km2; joi az hama chuqurash 5527 m (bahri Grenland). Jazmrahoi bisyore dorad: Grenlandiya, Galajazirai Arktikii Kanada, Shpisberten, Zamini Nav, Zamini Shimoli va gayra. Masohati umumii jaziraho 4 mln km2 ast. Ba uqyonus daryohoi kaloni Dvinai Shimoli, Pechora, Ob, Enisey, Khatanga, Lena, Inditirka, Kolima, Makenzi merezand.
Az rui khususiyathoi tabiiyu geografi Uqyonusi yakhbastai shimoli ba se havza — Evropai Shimoli, Arktika va bahrhoi kanorii Arktika taqsim meshavad. Bahrhoi kanorii Arktika (Kara, Laptevho, Sibiri Sharqi, Chukot, Bo- fort, Baffin), khal. Gudzon va gulugohhoi Galajazirai Arktikii Kanada asosan dar hududi shelf (tunukoba) joygir shudaand. Relefi qari uqyonus az shelf (barash go 1200—1300 km), nishebii rostfuromadai materiki va buni uqyonus iborat ast. Buni uqyonusro qatorkuhhoi zeriobii Gakkel, Lomonosov va Mendeleev — Alfa ba havzahoi chuqurob judo kardaand. Iqlimash arktikist. Zimiston 9/10 hissai akvatoriyai Uqyonusi yakhbastai shimoli bo yakhhoi shinokunanda pushida meshavand. Ba Uqyonusi yakhbastai shimoli shaklhoi arktiki va atlantikii nabototu hayvonot khos ast. Dar Uqyonusi yakhbastai shimoli mohi, tyulen, morj va digar hayvonhoro shikor mekunand. Borkashoni asosan bo Rohi bahrii shimoli (SSSR) va Guzargohi shimolu garbi (ShMA va Kanada) surat megirad. Muhimtarin bandarho: Murmansk, Arkhangelsk, Dikson, Pevek (OSSR), Tromsyo, Narvik (Norvegiya), Cherchiyal (Kanada).