Sumatra earthquake A minute before 8:00 a colossal earthquake happened in Sumatra, Indonesia on December 26, 2004 (magnitude of about 9.3). It happened in the northern part of Indonesia and the Andaman Sea. It started in the Indian Ocean and went NE and hit Sumatra. It was the worst earthquake in the last 100 years to occur in the Indian Ocean. When the earthquake hit Sumatra it hit the Andaman inland .
Here is a map of Indonesia. Sumatra is on the left side of the pic.
Over 100 people died in the Sumatra earthquake. And it was vary hard to find the people who were lost, here is a policeman trying to find the lost and hurt people in the rubble.
Unzen, a large volcano on Kyushu near Nagasakai, erupted catastrophically in 1792.
An earthquake started by the eruption triggered an avalanche.
Unzen the volcano has rapidly grew in the past 200,000 years, forming a large cone.
Eruptions over the past 150,000 years filled in much of the graben. A graben is a place between two fault lines. Initially, activity was dominated by blocky andesitic lava and ash flows. Andesite is an igneous rock with a weird texture.
Activity from 150,000 years ago to the present has occurred at a number of sites all around the volcanic complex, building four main domes at different times:
There where 36 victims, there was a mud slide that reached a car 7 miles away. Mount St. Helens lost 1,314 feet after the eruption, it lost a volume of 0.67 cubic miles, the very bottom of the crater is at 6,279 feet.
The ash cloud got to a height of 80,000 feet(15.151515 miles high) in less than 15 minutes and circled the Earth in 15 days and the ash depth was 10 inches, an area of 22,000 square miles of ash. It spread across the U.S. in 3 days.
The land slide was 70-150mph, the lateral blast was 300mph. It blew down enough trees to build 300,000 two-bedroom homes, 4billon board feet of timber. The final cost was $2.74 billion to repair every thing Mount St. Helens destroyed . It released 24 megatons of thermal energy.
The Tangshan, China earthquake on July 27 , 1976 is the deadliest earthquake recorded. About 242,000 people died from this earthquake.
The reason the 8.3 earthquake was so deadly is because buildings weren’t built to withstand the strong force of such an earthquake. The reason the buildings weren’t so strong is because it was in an area that didn’t expect earthquakes.
The second part of the reason it killed so many people is because there was only one road to the area that was not destroyed. 80% of the people were saved but an aftershock of a magnitude 7.1 reburied them in rubble.
The night before the earthquake people claim to have heard strange sounds and weird lights. The animals also gave warning that the earthquake was about to happen. One thousand chickens refused to eat and drink and ran around chirping like crazy. Mice and weasels were sighted running around searching for a place to hide. In one of the houses a goldfish was jumping in its bowl. At two o’clock a.m. an hour and forty two minutes before the earthquake the goldfish jumped out of its bowl as the owner kept putting him back in the bowl the fish kept on jumping out.
When the earthquake hit over one million people lay sleeping they didn’t know that the earthquake was about to happen.