1977 Tonga earthquake

1977 Tonga earthquake
1977 Tonga earthquake is located in Oceania
1977 Tonga earthquake
UTC time1977-06-22 12:08:33
ISC event697569
USGS-ANSSComCat
Local date23 June 1977 (1977-06-23)
Local time01:08:33
Magnitude8.0 Mw[1]
Depth55 km (34 mi)[1]
Epicenter22°53′S 175°43′W / 22.89°S 175.71°W / -22.89; -175.71[1]
TypeNormal[2]
Max. intensityMMI VIII (Severe)[3]
Casualtiesyes

The 1977 Tonga earthquake took place on 23 June at 01:08:33 local time some 200 km southwest of Tongatapu, with shocks affecting all islands of the kingdom of Tonga. The earthquake measured 8.0 on the moment magnitude scale and had a maximum intensity of VIII (Severe) on the Mercalli intensity scale.

The earthquake caused considerable damage to the infrastructures and some fatalities in most Tongan islands,[3] with the most damage in Tongatapu and ʻEua and the least damage in Ha'apai and Vava'u.[4]

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  2. ^ Cite error: The named reference PAGER-CAT was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Tonga was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference pdf was invoked but never defined (see the help page).