Igihungu cy’Ubuyapani ubu cyirimumazi abira kikaba gikeneye ubufasha bwinshi kandi bukomeye cyane kuko cyibasiwe cyane na cyakibazo cy’amazi aremereye ndetse n’umutingito udasanzwe (tsunami) Ubuyapani bukaba bukomerewe cyane, kuko bikomeje gusatira mu murwa mukuru Tokyo, Tsunami ikaba ifite umuvunduko ukomeye cyane kuko ntaho aya mazi agera ngo hagire igisigara akaba abanzirizwa n’umutingito ugashegesha ibintu byinshi nk’amazu yemwe nayitwa ko akomeye, hanyuma hakaza amazi menshi cyane kdi aremereye agatwara byose.