29 Sep '17, 8pm

A-68 Adrift

A lot happened on the Antarctic Peninsula under the cloak of the 2017 polar night—most notably, the calving of a massive iceberg from the Larsen C ice shelf. At the time (July), scientists had to rely on thermal imagery and radar data to observe the break and to watch the subsequent motion of the ice. By August, scientists started getting their first sunlit views of the new iceberg, which the U.S. National Ice Center named A-68. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured a wide view of the berg on September 11. A few days later, on September 16, the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS) on Landsat 8 captured these detailed images. The image on the left shows the icebergs in natural color. The rifts on the main berg and ice shelf stand out, while clouds on the east side cast a shadow on the ber...

Full article: https://earthobservatory.nasa.gov/NaturalHazards/view.php...

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earthobservatory.nasa.gov 27 Sep '17, 2pm

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