地震 じしん空白 くうはく いきではありませんでした
jishinkūhakuikidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 地震空白域

1. Was not a seismic gap.; Was not an area with seismic inactivity.

Past/Perfective
Negative
Polite
Formal Register