Mezue ahịrịokwu na-esonụ: Agwaetiti Aleutian dị nso n'ókè nke efere na-agakọ ọnụ ebe Efere Pacific na-ezute Efere North America. Ebe a na-akpọ Aleutian Trench na-egosi ebe efere ndị ahụ na-agbakọta. Pacific Plate na-adaba n'okpuru North American Plate n'akụkụ mpaghara Aleutian subduction nke gbatịrị ihe dịka kilomita 4,000. Ebe a na-agbaze mmiri bụ nnukwu ebe a na-agbaze mmiri nke nwere ike ime ka nnukwu ala ọma jijiji na-eme, mgbe ụfọdụ ọ na-eme ka e nwee ala ọma jijiji. Ihe
Ala ọma jijiji nke 1946 nke Aleutian Islands na ala ọma jijiji nke 1964 nke Alaska, na-atụ 8.6 na 9.2 n'otu n'otu.