Mezue ahịrịokwu na-esonụ: Prọfesọ Seed bipụtara ihe fọrọ nke nta ka ọ bụrụ akwụkwọ 300 na akụkọ banyere isiokwu dị iche iche na Geotechnical Engineering. Nnyocha mbụ o mere banyere mmekọrịta ogidi na ala, mkpakọ ala na ụzọ ụkwụ bụ ntọala sayensị maka imepụta ihe ọgbara ọhụrụ. N'afọ 1960, o guzobere mpaghara nyocha ọhụụ, injinịa ala ọma jijiji, a na-ahụkarị ya dị ka nna ntọala nke mpaghara a. Ọrụ ndị ọsụ ụzọ ya gụnyere mmepe nke usoro kwụ ọtọ (SHAKE) maka nyocha nzaghachi nke ala ọma jijiji, nyocha mmekọrịta nke ala, nyocha na mbelata nke mmiri mmiri, wdg. Ọ nyochara ọtụtụ nnukwu ọdachi, dịka nnukwu ala ọma jijiji nke Alaska na 1964, ala ọma jijiji nke Alaska, na ala ọma jijiji nke Alaska na 1964.
Ala ọma jijiji e nwere na San Fernando, California, na 1971, ọdịda e nwere ná mgbochi mmiri Teton n'afọ 1976, ala ọma jijiji e nwere n'ọdụ ụgbọ mmiri Nice, France, n'afọ 1979, na ala ọma jijiji e nwere na Mexico City n'afọ 1985. O jere ozi dị ka onye ndụmọdụ n'ọtụtụ narị ọrụ gburugburu ụwa, gụnyere ihe karịrị 100 nnukwu mmiri mgbochi, ihe karịrị ụlọ ọrụ ike nuklia 20, na ọtụtụ nnukwu ụlọ na ebe ndị e ji eme njem. Nnyocha ya, bụ́ nke dabeere n'ụkpụrụ sayensị ndị ziri ezi, emewo ka e degharịa echiche na usoro nile e ji eme atụmatụ ala ọma jijiji n'ụzọ nkà na ụzụ, nakwa ka e degharịa ụkpụrụ omume, usoro imepụta ihe, na iwu ndị e nwere n'ụwa nile.