Ramba uchiverenga ndima ino - Gomba reJapan igomba remugungwa riri muPacific Ring of Fire kuchamhembe kwakadziva kumabvazuva kweJapan. Inotambanuka kubva kuzvitsuwa zveKuril kusvika kumugumo wokuchamhembe kwezvitsuwa zveIzu, uye yakadzika kwazvo. Iyo inobatanidza Kuril<unk>Kamchatka Trench kuchamhembe uye Izu<unk>Ogasawara Trench kumaodzanyemba kwayo nehurefu hwe. Gomba iri rinogadzirwa apo mahwendefa ePacific anopinda pasi peOkhotsk Plate (a microplate yaimbova chikamu cheNorth American Plate). Nzira yokudonha inokonzera kukotama kweplate iri kudzika, ichigadzira gomba rakadzika. Kuenderera mberi kwekufamba kwenzvimbo yekudonha yakabatana neJapan Trench ndechimwe chezvikonzero zvikuru zvetsunami nekudengenyeka kwenyika kuchamhembe kweJapan, kusanganisira kudengenyeka kwenyika kukuru kweTōhoku uye tsunami yakazotevera
zvakaitika musi wa11 March 2011. Mwero wokudonha unobatanidzwa neJapan Trench wakanyorwa uri munenge pa1 /yr.