Refreezing of deep ice sheets creates mysterious blocks in Greenland: Study
Washington: A new research has discovered a mysterious blocks of ice as tall as city skyscrapers and as wide as the island of Manhattan at the very bottom of the ice sheet in Greenland.
Apparently water beneath the ice sheets refreezes and warps the surrounding ice upwards.
Robin Bell, a geophysicist at Columbia University`s Lamont-Doherty Earth Observatory said that the refreezing process uplifts, distorts and warms the ice above, making it softer and easier to flow.
The structures cover about a tenth of northern Greenland, the researchers estimate, becoming bigger and more common as the ice sheet narrows into ice streams, or glaciers, headed for the sea. As meltwater at the bottom refreezes over hundreds to thousands of years, the researchers believe it radiates heat into the surrounding ice sheet, making it pick up its pace as the ice becomes softer and flows more easily.
The researchers have revealed that Greenland`s glaciers appear to be moving more rapidly toward the sea as climate warms but it remains unclear how the refreeze process will influence this trend.
The study is published in Nature Geoscience.
More from India
More from World
More from Sports
More from Entertaiment
- Panel discussion on BJP MLAs assaulting legislator Rashid inside J&K Assembly
- Watch: How Russian special forces Spetsnaz will end terror of ISIS
- Vladimir Putin's attack on ISIS making America and NATO nations uneasy?
- Two J&K MLAs clash over beef party issue in Legislative Assembly
- Greater Noida women blames UP police for stripping off their clothes
- Latest condition of Navjot Singh Sidhu: Sherry Paaji making steady recovery!
- FIR against Asaduddin Owaisi for posting objectionable picture of Yogi Adityanath on Facebook
- Man beheads wife over suspicion of illicit relationship, walks on road with her head
- Bihar has to choose between 'jungle raj' and 'vikas Raj': Narendra Modi
- Shocking! Saudi employer chops off Indian maid's hands