Mepụta ụdị nkebi ahịrịokwu a nke dị mgbagwoju anya Ala ọma jijiji (nke a makwaara dị ka ala ọma jijiji, ịma jijiji ma ọ bụ ịma jijiji) bụ ịma jijiji nke elu ụwa, nke nwere ike ịdị ike nke na ọ ga-ebibi nnukwu ụlọ ma gbuo ọtụtụ puku mmadụ.
N'ezie, ụdị nkebi ahịrịokwu ahụ dị mgbagwoju anya bụ "Ala ọma jijiji (nke a makwaara dị ka ala ọma jijiji, ịma jijiji ma ọ bụ ịma jijiji) bụ ịma jijiji a na-ahụ anya nke elu ụwa, na-esite na ntọhapụ nke ike na mberede na ụwa nke na-emepụta ebili mmiri seismic. "