1970 Ancash earthquake

1970 Peru earthquake
1970 Ancash earthquake is located in Peru
Yungay
Yungay
Lima
Lima
1970 Ancash earthquake
UTC time1970-05-31 20:23:29
ISC event796163
USGS-ANSSComCat
Local date31 May 1970 (1970-05-31)
Local time15:23:29
Duration~ 45 seconds [1][2]
Magnitude7.9 Mw [3][4]
Depth45 km (28 mi) [3]
Epicenter9°24′S 78°54′W / 9.4°S 78.9°W / -9.4; -78.9 [4]
TypeNormal
Areas affectedPeru
Max. intensityMMI VIII (Severe) [1]
Peak acceleration0.1 g at Lima[2]
Tsunami.38 m (1 ft 3 in) [5]
Casualties66,794–70,000 dead [5]
50,000 injured [5]

The 1970 Ancash earthquake (also known as the Great Peruvian earthquake) occurred on 31 May off the coast of Peru in the Pacific Ocean at 15:23:29 local time. Combined with a resultant landslide, it is the most catastrophic natural disaster in the history of Peru. Due to the large amounts of snow and ice included in the landslide that caused an estimated 66,000-70,000 casualties, it is also considered to be the world's deadliest avalanche.

  1. ^ a b Plafker, Ericksen & Fernández Concha 1971, p. 545
  2. ^ a b Cite error: The named reference Cluff was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference ISC-GEM was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Utsu was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference PAGER-CAT was invoked but never defined (see the help page).