Epicenter
epicenter yokan epicentre (kan Afaan Greek durii irra dhufee) bakka fulla lafa irratti argamu kan focus, bakka chocho'i lafa yokan tokka'i bira gubbatti argamu dha. Epicenteriin hypocenter olii fulla lafa irratti kan argamu yoo ta'u, hypocenteriin immo bakka energyiin lafa jalla itti gadhifame dha. Seismic waven bakka hypocenter jedhamu kana irra nana'a ba'a. Gaddifammu seismic kuniin qarqara lafa gamma birra epicenter lafat kan ta'u yoo ta'u kunis waan "fesashin" "outer core" waan transverse yokan shear waves (S-waves) waan xuxee, longitudinal yokan compressional (P-waves immo waan refract godhuuf.
Ergaa Chocho'i lafa ademsifame bodda, geologistotni epicenter bekkuf seismogram ilalanni bekku. Kunii immo yerro hunda seismograph bakka sadiit argamu barbada. 