Topic > The Novarupta Impact - 972

On the morning of June 6, 1912, the ground on the southern Alaska Peninsula began to shake with extreme force. This force, when later analyzed, turned out to be the most powerful volcanic eruption of the 20th century. This recently formed caldera volcano, later known as Novarupta, literally translated as “new eruption,” is located in Katmai National Park and Preserve in Alaska's Aleutian Range (Pidwirny and Jones 2009). The Novarupta eruption caused immediate impacts on Alaska's native climate, as well as impacts on the earth's global climate in general. Volcanoes can leave huge local impacts on geography and ecosystems, but due to Novarupta's status as the strongest volcanic eruption in Alaskan history, Novarupta has left local and global impacts on Earth's climate. The eruption of Novarupta volcano negatively impacted the global climate by expelling a large veil of volcanic ash aerosols/dust that significantly reduced global temperatures, releasing oxides into the atmosphere, and triggering numerous earthquakes after the initial eruption. Large eruptions like Novarupta can have a significant impact on the global economy. Other earthquakes can also cause greater geological damage and greater loss of life. According to Klemetti Erik, wired.com author and assistant professor of Geosciences at Denison University, "there were at least 14 earthquakes triggered during or after the Novarupta eruption of magnitude 6 or greater, releasing 250 times more energy than the Novarupta eruption ". earthquakes at Pinatubo in 1991. This is believed to reflect the lack of pre-existing faults from previous calderas where the new caldera at Katmai formed” (Klemetti 2012). Earthquakes triggered by volcanoes are not very rare, but due to Novarupta's size, the numerous earthquakes triggered have also been proportionately large