This is The Ring Of Fire lighting up with dozens of huge earthquakes, in just one week :
(click to enlarge)
The Ring Of Fire :
....sweeps in a horseshoe shape up through the Pacific Islands, Indonesia, The Philippines, Japan, across to Hawaii, then to California and down the long coast of Chile.More On The Ring Of Fire And Tectonics at This Dynamic Planet
The clashing of tectonic plates around this ring produces valuable anomalous minerals, including gold. It throws up spectacular mountains...The Ring of Fire also comprises the most unstable zone in the earth's crust, beneath which pressure constantly builds, causing volcanoes to erupt and earthquakes to roar.
About 90 per cent of the world's earthquakes occur around the ring.