1976 Papua earthquake

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UTC time	1976-06-25 19:18:56
ISC event	713087
USGS-ANSS	ComCat
Local date	26 June 1976 (1976-06-26)
Local time	04:18:56 IEST
Magnitude	7.1 Ms
Epicenter	4°36′11″S 140°05′28″E / 4.603°S 140.091°E / -4.603; 140.091
Areas affected	Indonesia
Max. intensity	X (Extreme) [1]
Casualties	at least 422 dead, over 5,000 missing

The 1976 Papua earthquake occurred on 26 June with a surface wave magnitude of 7.1 in Yahukimo Regency near the border with Pegunungan Bintang Regency, Highland Papua (then Irian Jaya), Indonesia. Total deaths for the event amounted to 422, including 70 who died in subsequent landslides.

Background

Indonesia lies within the Pacific Ring of Fire, a sector of the Pacific where several tectonic plates intersect. This movement between the plates results in extremely high volcanic and seismic activity.^[2] Papua is constantly plagued by landslides.^[3]

Damage and casualties

Directly after the earthquake the casualty count was assessed as 350 dead. However, landslides soon occurred in the affected area, leading to 72 more casualties, and 5,000–9,000 were missing and assumed dead after the landslides. A total of six villages were demolished in the area. The west sector of Irian and eastern New Guinea also reported that the earthquake was felt significantly in their region.^[4]