Within the last 8 hours, two strong earthquakes rattled the ground around the world: A rare M6.3 earthquake in the Balleny Islands region of Antarctica followed, a few hours later, by a M6.0 tremor in the Jujuy Province of Argentina.
Estimated released energy: 1.8 x 1014 joules; Equivalent to 49.4 gigawatt hours, 42502 tons of TNT or 2.7 atomic bombs!
The Balleny Islands are a series of uninhabited islands in the Southern Ocean.
In the archipelago, the Buckle, Sturge and Young Islands are examples of stratovolcanoes. It is possible that these islands are still volcanically active. The Brown Peak volcano may have had an eruption in 2001, based on satellite observation.
A magnitude-6.0 earthquake occurred in Jujuy Province in Argentina at around 03:12 Feb. 22.
Estimated released energy: 6.3 x 1013 joules; equivalent of 17.5 gigawatt hours, 15080 tons of TNT or 0.9 atomic bombs!
Although very deep (256.0 to 237.0 km; from 159 to 147 mi), at least 14 people people reported feeling the quake on the USGS website.
The epicenter was about 59 km (37 miles) west of Abra Pampa. The tremor occurred at a depth of about 242 km (150 miles), and light shaking was probably felt throughout Jujuy Province in Argentina, Potosi and Tarija departments in Bolivia and far eastern Antofagasta Region in Chile.
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