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Tectonic plates rattle- more turbulence at the South Pole

June 21, 2011


June 21, 2011ANTARCTICA – A 5.5 magnitude earthquake struck the South Sandwich Islands region, situated around 750km south east of South Georgia, in the South Atlantic early Sunday.  It was the latest in a series of quakes to hit the Antarctic Region during the past 24 hours. The moderate quake struck at 9.37am GMT at a depth of 137km and was centered 69 km (42 miles) NNW of Visokoi Island and 330 km (205 miles) NNW of Bristol Island. The last significant earthquake to be recorded in the South Sandwich Islands region occurred on 08 December 2010 when a magnitude 6.5 quake struck 85 km (55 miles) ENE of Visokoi Island…the earthquake was followed by a 4.9 magnitude quake along the Pacific-Antarctic Ridge at 12.05pm.  The quake was measured at a depth of 10.3 km (6.4 miles). Another moderate earthquake struck the Antarctic region early Saturday.  The 5.1 magnitude quake which struck the Balleny Islands region 479 km (297 miles) NW of Scott Island, Antarctica, at 5.56am on Saturday. The quake was measured at a depth of 15.8 km (9.8 miles), according to the US Geological Survey (USGS). The Pacific–Antarctic Ridge (PAR) is a divergent tectonic plate boundary located on the seafloor of the South Pacific Ocean, separating the Pacific Plate from the Antarctic Plate. –Irish Weather On-line


Current readings in Antarctica reflecting tension from tectonic plate agitation in Pacific Ring of Fire. There has been an inordinate amount of tectontic plate movement in the last few days. People living in high-risk seismic zones should be possibly alert for potential seismic events over the next 48 hours.

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