Tag / nasa

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  • Photo Friday: Upsala Glacier

    Upsala Glacier, a stunning glacier within Parque Nacional Los Glaciares in Argentina, has been retreating rapidly due to climate change. NASA has found, through satellite imaging, that Upsala’s ice front has moved back approximately 2 miles since 2001, following a similar trend seen in the rest of Patagonia (the vast area at the southern extent of…

  • Courtesy of Wikipedia

    Roundup: Grounding Lines, Fault Lines and Algae-filled Pits

    NASA reports on the Hidden Melting of Greenland’s Glaciers “What’s causing this ‘big thaw’? Rignot’s team found that Greenland’s glaciers flowing into the ocean are grounded deeper below sea level than previously measured. This means that the warm ocean currents at depth can sweep across the glacier faces and erode them.“In polar regions, the upper layers…

  • Scientists Find Nitrogen Ice Glaciers on Pluto

    Newly released close-up photographs from NASA’s New Horizons mission show evidence of exotic ice flow across dwarf-planet Pluto’s surface, indicating that Earth may not be the only planet with glacier-like geology. New Horizon’s Long-Range Reconnaissance Imager (LORRI) shows close-up photos of a sheet of ice that appears to have glided across Pluto’s surface in similar manner…

  • Thule Glacier, Greenland

    PhotoFriday: NASA Views Greenland Glaciers From Above

    NASA’s Operation IceBridge is finishing up its seventh annual campaign surveying Arctic ice levels. The operation has run biannual polar expeditions, one to the Arctic and the other to the Antarctic, each year since its formation in 2009. This year’s spring survey of the Arctic wrapped up on May 22. While Operation IceBridge uses advanced remote…

  • Tracking Glaciers From Space: GLIMS

    In 1994, an international group of scientists came together to form GLIMS (Global Land Ice Measurements from Space), a worldwide initiative to monitor and study glaciers using satellite data. For at least one hundred years, scientists had primarily used traditional field measurements to track glacier dynamics, but field data are by necessity limited in scope,…

  • Glaciers + Algal Blooms = Good?

    The pros and cons of algal blooms, high concentrations of phytoplankton in the oceans, are a subject of much debate. But several studies in recent months have examined links between changing polar environments, exponential growth of algal blooms, and potential for carbon reduction. One study, appearing in the journal Nature Communications in May 2014, suggests…

  • Far below the ice of a distant moon: Life?

    Mars rovers have been tested in Death Valley and Peru. Apollo astronauts used Meteor Crater in Arizona to simulate walking on the moon. Now glaciers have their part to play as stand-ins for outer space. The Jupiter’s icy moon Europa is the destination, Alaska’s Matanuska glacier is the training ground. Scientists think that an ocean…