India's Volcanic Activity

 India's Volcanic Activity

India has a list of six volcanoes including the Barren Island volcano which also happens to be the only confirmed active volcano in South Asia. Barren Island is an island located in the Andaman Sea. It is the only confirmed active volcano in the Indian subcontinent, and the only active volcano along a chain of volcanoes from Sumatra to Myanmar. It is a part of the Indian Union territory of Andaman and Nicobar Islands, and lies about 68 miles northeast of the territory's capital, Port Blair. The first recorded eruption of the volcano dates back to 1787. Since then, the volcano has erupted more than ten times, with the most recent one being in 2020. This volcanic island stands in the midst of a volcanic belt on the edge of the Indian and Burmese tectonic plates.  A conventional way of classifying magmatic volcanoes is by their frequency of eruption. They are called active if they erupt regularly. Dormant or inactive volcanoes are those that have erupted in the past times but are now quiet while the volcanoes that have not erupted since ages are termed extinct. The Barren Island volcano, in the Andaman and Nicobar Islands is erupting once again. After remaining dormant for 150 years, it first erupted in 1991 and now showed signs of powerful volcanic eruptions.While hazard specific regulations exist for some hazards such as earthquakes (seismic building codes), it is rare to have volcano specific regulations. Volcanic hazards are usually managed by generic disaster management, natural hazard planning, and health and safety regulations.  Some mitigation recomendations are Providing personal protective equipment for personnel working in hazardous environments. As well as contacting the local volcano observatory or geological hazards agency to determine whether volcanic gas hazards are present in the project area.


Weak thermal anomalies were visible at the summit crater of Barren Island on 6 and 31 December 2021 (top left and right) and 25 and 30 January 2022 (bottom left and right). The anomalies were stronger on 31 December and 25 January. Images using “Atmospheric penetration” rendering (bands 12, 11, 8a). Courtesy of Sentinel Hub Playground.

An ash plume in 1991 rises above Barren Island along the volcanic arc connecting north of Sumatra. The 3-km-wide island contains a 1.6-km-wide crater that is partially filled by a scoria cone that has been the source of eruptions since the first was recorded in 1787. Lava flows reached the coast during several recent eruptions.







https://en.wikipedia.org/wiki/Barren_Island_(Andaman_Islands) 
https://volcano.si.edu/volcano.cfm?vn=260010#:~:text=Barren%20Island%2C%20a%20possession%20of,Sumatra%20and%20Burma%20(Myanmar).

Comments

  1. Ana GGFebruary 26, 2023 at 1:36 PM

    Interesting volcanic research- what types of mitigation/recommendations do they have? (https://thinkhazard.org/en/report/115-india/VA)

    ReplyDelete

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