Good morning, everyone, in these environmental science lectures,I guess you’re all used to hearing about globe warming, well, I am here today to talk to you about one particular volcano and its effect of globe cooling.
I'll begin by going back early a little bit in time, towards the middle of 1991, the second largest volcanic eruption of last century occurred in the Philippines, not far from the capital city, Manila, on the island of Luzon. Mount Pinatubo belongs to a chain of volcanoes in the area and this was by no means its first eruption, there is evidence of eruptions from approximately 5,003,000 and 5,500 years ago. The event of the 1991 Mountain Pinatubo eruption began in July 1990, when a magnitude 7.8 earthquake occurred 100 kilometers northeast of the Pinatubo region. The sleeping giant was reawakened but few people had any idea of what is in store for them. In middle March 1991, many earthquakes were experienced around Mount Pinatubo and this is when volcano scientists or vulcanologists as they are called, started their investigation of the mountain, before the disaster, thousands of people lived in very close proximity to the mountain and on April 2nd, small explosions from vents near the crater dusted their villages with rush, this resulted in the order for evacuations of 5,000 people later that mouth.
