Either they are near fault lines or near tectonic plates (what carry continents)
one time a year
The only significant earthquake on Aug 31, 2012 was magnitude 7.6 in the PHILIPPINE ISLANDS REGION. For details see related link below.
Earthquakes occur frequently along the edges of fault lines. This is caused when two plates collide into or slide past each other. This will send shockwaves around the epicenter, resulting in an earthquake.
Earthquakes mostly occur in the eastern part of the Philippines along the Philippine Trench, where the Philippine Sea Plate subducts beneath the Philippine Plate. Regions such as Mindanao, Visayas, and Luzon are particularly prone to earthquakes due to their proximity to tectonic plate boundaries.
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Earthquakes are caused by tectonic activity of the earth. In otherwords, the earth caused the great kanto earthquake :P (: The Philippine plate and the Honshu Plate rubbing together caused the tremors in the earth and the earthquake :)
Yes. An earthquake may occur in the ocean.
Aftershocks can occur hours or days after an earthquake.
It was the Eurasian and the Philippine plates that moved and caused the earthquake in Kobe.
Because of it's location directly on what vulcanologist call the "Pacific ring of fire", a high volcanism and earthquake area.
A tsunami is an ocean wave that is caused by an earthquake. It would occur after an earthquake.
Seismic generators have been set in the Philippine Archipelago. This has been done in order to predict the approximate time that an earthquake may strike.