Japan Tsunami Breaks Off Antarctica Iceberg the Size of Manhattan

1 MIN:11SEC
Category: Science / Aug 08, 2011 8:54PM EDT
Scientists have long suspected icebergs to have a link with earthquakes. When the huge March 11 earthquake triggered the Tohoku Tsunami in Japan that flattened entire coastal towns and killed nearly 16,000, scientists knew that tracking the wave could provide visual proof of the connection. The undersea megathrust earthquake had a staggering magnitude of 9.0 (Mw), and triggered waves of up to 133 feet high. Scientists were able to track the wave over 8,000 miles as it sprawled through the Pacific and Southern oceans. Just 18 hours after the tsunami, a wave of 1-foot height struck the ice shelf in Antarctica. The Sulzberger ice shelf is a sheet of ice 260 feet thick that extends towards New Zealand. It hasn't budged in nearly 50 years, but the pressure from the wave was strong enough to snap off massive pieces of ice. One of them measured four by six miles in surface area, nearly the size of Manhattan. Satellite imagery enabled scientists to see the calving, or break off of the iceberg, proving that seismic events can certainly lead to other effects far from the site of the event, across the globe.The undersea megathrust earthquake had a staggering magnitude of 9.0 (Mw), and triggered waves of up to 133 feet high. Scientists were able to track the wave over 8,000 miles as it sprawled through the Pacific and Southern oceans. Just 18 hours after the tsunami, a wave of 1-foot height struck the ice shelf in Antarctica. The Sulzberger ice shelf is a sheet of ice 260 feet thick that extends towards New Zealand. It hasn't budged in nearly 50 years, but the pressure from the wave was strong enough to snap off massive pieces of ice. One of them measured four by six miles in surface area, nearly the size of Manhattan. Satellite imagery enabled scientists to see the calving, or break off of the iceberg, proving that seismic events can certainly lead to other effects far from the site of the event, across the globe.