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NOTES ON THE SEISMICITY OF THE EARTHQUAKES OF 1 AUGUST 1968 AND 7 APRIL 1970

EDGAR M. MORANTE
Geophysical Division, Weather Bureau

 

 

 

 

INTRODUCTION


On August 1, 1968 at 20h19m21.9s (GMT), the whole island of Luzon, including some northern islands of Visayas was shaken by an earthquake of magnitude 7.3 (Ms) with focal depth of 36 kms. (USCGS). The epicenter was placed at 16.5oN, 122.2oE or about 250 kms. NNE from the City of Manila or 20 kms. in the same direction from the coastal town of Casiguran, Quezon Province.

 

 

 

 

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