According to the Smithsonian website, Chile has 91 Holocene volcanoes. Ten of those have erupted within the last 20 years. Most large volcanoes in Chile are stratovolcanoes also called composite volcanoes. They are tall and cone-shaped made up of many layers of hardened lava and volcanic ash. Cinder cones are smaller than stratovolcanoes and are steep and cone-like in shape. In Chile there is also plenty of hydrothermal activity and is found where there is volcanic activity under the Earth’s crust. Geyser is a type of hot spring that erupts regularly, throwing hot water and steam into the air. There are also hot springs and fumaroles in Chile.
The Southern Andean Volcano Observatory (Spanish: Observatorio Volcanológico de los Andes del Sur), also known by its acronyms as OVDAS, is part of Red Nacional de Vigilancia Volcánica, a program of the Chilean National Geology and Mining Service to watch the 43 most dangerous volcanoes of Chile. In 2012, there were 30 volcanoes under observation.
Based off the USGS website, the eruption of the Chaitén Volcano in Chile, on May 26, 2008 influenced the Chilean government to plan a National Volcano Early Warning System (NVEWS) modeled after a 2005 USGS report proposing a monitoring strategy for U.S. volcanoes. The strategy ranks hazards posed by volcanoes into threat levels, assesses the monitoring gaps, and recommends upgrading the monitoring capability according to the threat level. This monitoring network assists them to transmit data in real time to help warn the public of further eruptions. This system will ensure proper evacuation time and could save countless lives.
Sources:
Global Volcanism Program | Chile Volcanoes (si.edu)
List of volcanoes in Chile - Wikipedia
Volcanoes of Chile | Chile Culture
Map-of-active-volcanoes-in-mainland-Chile_Q320.jpg (320×320) (researchgate.net)
Hi Serena,
ReplyDeleteI thought that your blog provided really good information on the volcanic activity in Chile. I am glad that the government put in place a warning system to mitigate the threat to lives that a volcanic eruption can pose. I liked how you explained the type of volcanoes that are located in Chile and how many there are: 91 is a lot! What's even more shocking is that they are watching 30 (1/3 of the volcanoes) because they actually pose a threat. That's scary to think about.
Hi Serena,
ReplyDeleteI like your blog and I like the way you clarify and organized all the information about Volcanos in Cheli. the most thing I like is the strategy that the government follow in order to evacuate the people and save the country. However, thinking about how far is the active area from people and the city is really scary and this is the first time I knew that Cheli still has some cone-shaped made up of many layers of hardened lava and volcanic ash!!!, looking to this tall shape is giving me the feeling of scaping :) . thank you for this nice information it was useful.
Hello Serena,
ReplyDeleteI really liked your blog post for volcanoes. I thought it was really interesting and I was surprised by the amount of volcanoes in Chile and how recent and frequent the eruptions were. I also like how you added the map which shows that most of the volcanoes are closer to the border of the country and not the coastline, that was fascinating. I wasn't really surprised that the government implemented a warning system because of how frequent the volcanoes actually are. Overall I thought it was a great blog post, good job.
Hi, Serena.
ReplyDeleteI enjoyed reading your blog. I surprised that there are so many volcanoes in Chile. However, it is gratifying to see that in response to the crisis, the government has implemented a warning system to mitigate the threat to human life posed by volcanic eruptions.