Earthquakes too small to be felt are recorded almost every day by the Central Weather Bureau. These earthquakes happen because two tectonic plates--the Philippine Sea plate and the Eurasian plate--have been pushing against each other for the past six million years, sending powerful vibrations barreling through the earth's crust from time to time.
至今台灣東部三天一小震、五天一大震，在氣象局的地震記錄裡，台灣天天發生無感地震。一切都因為六百萬年前菲律賓海板塊與歐亞板塊的正面交鋒。