Today in Earthquake History
On July 20th...
M7.9, 7.7 - Bougainville region, Papua New Guinea, 1975
These earthquakes struck the west coast
of the island of Bouganville. The magnitude 7.9
earthquake generated a local tsunami that
reportedly demolished every house in the village
of Torakina. Bouganville Copper Ltd. ordered
the evacuation of its giant mine at Panguna.
The earthquakes cracked many buildings and
caused a number of landslides. A number of
magnitude 6 or greater aftershocks were recorded
during the first 12-hour period following the
main shock. Although many aftershocks were recorded,
none caused additional damage. Despite the severity
of the earthquakes, no fatalities were reported.
From Significant Earthquakes of the World 1975, and Earthquake Information Bulletin, Volume 7, Number 5.
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