About 5:00 pm on September 30th, a magnitude 7.6 earthquake struck just offshore of the town of Padang in Sumatra, Indonesia. The quake toppled buildings and started many landslides, smashing homes and swallowing up entire villages. The following day, As rescue workers arrived and residents tried their best to dig out and help the survivors, another unrelated quake with a magnitude of 6.6 struck less than 1,000 km south of the original epicenter. Each of the two quakes had at least one aftershock greater than 5.0 as well
Danny OCallaghan on 30 Dec 13"The 2011 Japan tsunami, which killed up to 20,000 people and caused the partial meltdown of the Fukushima nuclear plant, was made worse by an underwater landslide, according to scientists."