The tremendous eruption of Mount Tambora in April 1815 was the most powerful volcanic eruption of the 19th century. The eruption and the tsunamis it triggered killed tens of thousands of people. And the magnitude of the explosion is difficult to fathom. It has been estimated that Mount Tambora stood approximately 12,000 feet tall before the 1815 eruption, and the top 4,000 feet of the mountain was completely obliterated. Adding to the disaster's massive scale, the huge amount of dust blasted into the upper atmosphere by the Tambora eruption contributed to a bizarre and highly destructive weather event the following year.
Then on May 18, 1980 it happened, 57 people were killed, over 7,000 animals were killed as well. The eruption destroyed entire forest, leaving only brunt tree trunks all flatten in the same direction. The amount of timber destroyed was enough to make 300,000 two-bedroom homes and the mud that traveled down the mountain destroyed about 200 houses and clogging up shipping channels in the Columbia River. The volcano itself change shape, poisonous gas and ash was released from the volcano ash poured down on 15 states within days and gas from the volcano and circled the world. It
Iceland is warmed by the Gulf Stream. The Laki eruption wasn’t really a single event, but rather 8 months’ worth of lava flows and explosions that ejected an astounding 14.7 km cubed of ballistic lava that came out of 140 vents. The eruption was caused by small earthquakes that were hardly detected by the seismometers the eruption caused a gigantic amount of smog and poisonous gasses to envelope Iceland in a matter of days which caused at least 10,000-15,000 deaths in Iceland alone. Consequences in Iceland Affects of a volcanic eruption An estimated 20–25% of the population died in the famine and fluoride poisoning after the fissure eruptions ceased. Around 80% of sheep, 50% of cattle and 50% of horses died because of
9, 000 of those being foreigners. The Tsunami’s energy was so great the wave traveled around the world three times. Seven years later in 2011 an earthquake 60km off the east coast of Tohoku with a magnitude of 9.0 on the Richter scale struck Japan. The earthquake triggered a huge Tsunami which reached heights of 133 ft. and killed around 15, 839 people, injured 5950 and left 3642 unaccounted for. Causes When a dense oceanic plate collides with a less dense continental plate the denser oceanic plate subducts under the less dense continental plate.
Like the other volcanoes found in the Cascade Range, Mt St Helens (MSH) had been dormant for many years. In March 1980 there were signs of an impending eruption, as several earthquakes occurred. However on the 18th March 1980, an earthquake measuring 5.1 on the Richter Scale rocked the volcano. Within a few seconds of the earthquake, the volcano erupted and the whole northern side of the volcano collapsed causing the largest known landslide in US history. This pulverised rock, glacier ice and ash wiped out all living
This earthquake was named Loma Prieta earthquake and occurred at a time of 5:04 (PDT) with a magnitude measurement of 6.9 and a surface wave magnitude of 7.1. The earthquake was caused by a slip in slip in San Andreas or a subsidiary and its epicenter was located ten miles northeast of the city Santa Cruz. The earthquake had also had a death toll of 62 people with the number of injured people reaching a amount of 3,757 ! Not only this however the earthquake had cost California approximately 6.8 billion dollars. This was because of many fires, houses with severe damages, and buildings with severe damages.
A cable repair ship had the city in direct view; the upper mountainside ripped open and a dense black cloud shot out horizontally. A second black cloud rolled upwards, forming a gigantic mushroom cloud and darkening the sky in a 80 km radius.
Why was the Haitian earthquake so deadly? On January 12th 2010 at 16:53 local time (21:53 GMT) an earthquake hit the Caribbean island of Haiti. It was a colossal 7.0 on the Richter scale and lasted around 35 seconds, but inflicted a cataclysm which would take years to correct. It struck south of the capital Port-au-Prince destroying the presidential palace, UN HQ, as well as houses, schools and public buildings. The epicentre was a town named Leogane; about 19km (12 miles) west of Port-au-Prince, thousands were left homeless and up to 80-90% of buildings in Leogane were destroyed.
The Mont Blanc had been carrying benzol on its deck which was set on fire by the sparks from the collision. After desperate attempts to put out the fire, the crew jumped over board and tried to swim as far as possible. The benzol had started to leaked through the decks into the ships hold which contained over 2 700 tons of explosives. At 9:04am the fire reached the ships hold and a massive explosion occurred. The Mont Blanc was launched a mile in the air and over 2.5 square kilometres of the surround area were levelled and windows were shattered as far as Truro, Nova Scotia which is over 100 kilometres away.
Before the eruption of May, 1980, the elevation at the top of Mount St. Helens was about 3 km. Mount St. Helens is a composite volcano (or stratovolcano), a term for steep sided, often symmetrical cones constructed of alternating layers of lava flows, ash, and other volcanic debris. Composite volcanoes tend to erupt explosively and pose considerable danger to nearby life and property. Mount St. Helens last eruption was from October 2004 to