Researchers say a massive cavity of two-thirds of Manhattan was found under an Antarctic glacier. The Pocket is a sign of "rapid decay," and only one of "a few disturbing discoveries" recently about the glacier, NASA's Laser Propulsion Laboratory said.
"[The size of] the cavity below the glacier plays an important role in melting, "says Peter Milillo of the reactive nozzle laboratory." While more heat and water are under the glow, it melts faster. "
The rising cavity sits in the west of Antarctica at the bottom of the Thwaites Glacier, which is roughly equal to Florida and contains enough ice to contribute to an increase in sea level more than 2 meters. It is growing at an "explosive" rate surprised by researchers who conducted a study led by the glacier agency.
"The findings emphasize the need for detailed observations of the observations of Antarctic glaciers in calculating how quickly the level of sea level will increase in response to climate change," NASA said.
CBS News Climate and Time Associate Jeff Berardelli reports that the cavity is probably a significant finding, since the Antarctic ice sheet is considered one of the most unstable and vulnerable. It seems that not only melts on ocean edges, but also from below, and warmer ocean waters infiltrate.
NASA said the hole was big enough to have 14 billion tons of ice – the majority of them melted in the last three years. Scientists say the glacier is responsible for about four percent of the global sea level rise.