PHIVOLCS Earthquake Intensity Scale

The PHIVOLCS earthquake intensity scale (PEIS; Filipino: Panukat ng Pagyanig ng Lindol) is a seismic scale used and developed by the Philippine Institute of Volcanology and Seismology (PHIVOLCS) to measure the intensity of earthquakes. It was developed as upon a specific response to the 1990 Luzon earthquake.

Source: Wikipedia — PHIVOLCS Earthquake Intensity Scale (CC BY-SA 4.0)