TUNUKOBA, tunukob, pastob, joyhoi na chandon chuquri daryo, kul va bahru uqyonushoro guyand, ki relefi qari onho nisbatan tez baland shuda, ba harakati mavju jarayon va hayoti organizmhoi zinda tasir merasonad.
Tunukobahoe, ki chuquriashon az 10 va 20 m kamtar ast, baroi kishtigardi khatarnokand.