Birdseye view of iceberg A-68A | Earth



[ad_1]

<! –

->

Image via IceBridge Digital Mapping System / NASA.

NASA's IceBridge operation, now in its ninth year, is an airborne mission that flies annually over both polar regions to map the ice. A few flights during the 2017 campaign led scientists and instruments on the newly reformed Larsen C ice shelf in Antarctica.

One of the major changes that scientists observed was the birth of an iceberg from the ice shelf Larsen C. Nathan Kurtz, IceBridge project scientist, said in a statement:

We observed the crack in the shelf during the last year's campaign; Since then it has broken and produced a huge iceberg.

The Larsen C iceberg, called A-68A, was photographed during a flight on November 12, 2017. The photo above was acquired by the Digital Cartography System (DMS), which essentially as a digital camera that looks He pointed down a window in the belly of the plane. This image shows part of the edge of the giant iceberg (the side closest to the shelf) and the open water.

Scientists estimate that the shelf and iceberg edges rise about 100 feet (30 meters) above the surface of the sea. Some mélange – a mixture of types of ice – appear united to the iceberg, and blocks of ice have come off, giving the edge of the iceberg an angular appearance.

John Sonntag, scientist of the IceBridge mission, took this picture from a window of the P-3 research plane. The flight aimed to better understand the Larsen system as a whole, and scientists took serious measures to "see" the shape of the seabed and the bedrock under the ice. Read more in this blog post. Photo via NASA / John Sonntag.

Enjoying EarthSky so far? Subscribe to our free daily newsletter today!

Donate to EarthSky: your support means everything to us

Briefly: Photos of the giant iceberg A-68A, which were born on the Larsen C ice shelf in Antarctica.

Read more from the Earth Observatory of NASA

  Eleanor Imster

[ad_2]
Source link

Leave a Reply

Your email address will not be published.