What's the difference between quake magnitude, intensity?
MANILA - The Philippine Institute for Volcanology and Seismology (Phivolcs) recorded two strong aftershocks in Bohol today after Tuesday's deadly 7.2 magnitude earthquake.
The aftershocks occurred at 9:36 a.m. and 10:32 a.m.
The aftershocks were the strongest yet, both having a magnitude of 5.1 on the Richter scale.
More than 800 aftershocks have been recorded since yesterday, but only around 15 were actually "felt" in the area.
Phivolcs said it may take another 5 days before significant aftershocks decrease.
Meanwhile, Phivolcs again made a distinction between magnitude and intensity, explaining that the former Is an absolute measure of the power generated by an earthquake, while the latter refers to how the strong the quake feels in certain areas.
This means that while the magnitude is represented by a single number, the intensity may change from place to place depending on its proximity from the epicenter and the ground material in a certain area.