Roundup: 1,400 Year-old Toy Arrow, NASA’s Ice Satellite, and Svalbard Glaciers

Discovery of a 1,400 Year-old Toy Arrow in Norway

From Secrets of the Ice: The recovery of a small blunt arrow, radiocarbon-dated to Late Antique Little Ice Age, is a testimony to the importance of hunting during this period. Due to its small size, it is very likely to be a toy arrow. From a young age, children had to practice and master the art of bow-and-arrow. It was essential for survival, especially during harsh climatic conditions. The toy arrow was found in the glaciated mountain pass at Lendbreen in Breheimen National Park, southern Norway. The unlucky child probably lost it in the snow and thought it was gone forever. Not so, the ice preserved it for 1,400 years.

Read about this find and more glacier archaeology here.

The blunt toy arrow is just 26.5 cm long and was dated to 600 AD (Source: Secrets of the Ice/Twitter).

 

Counting on NASA’s ICESat-2

From NASA: NASA’s most advanced laser instrument of its kind launched into space earlier this fall. According to the agency, the Ice, Cloud and land Elevation Satellite-2, or ICESat-2, provides critical observations of how ice sheets, glaciers and sea ice are changing, leading to insights into how those changes impact people where they live.

Read more about the ICESat-2 here.

Final checks are made prior to loading ICESat-2 (Source: USAF 30th Space Wing/Timothy Trenkle).

 

Glaciers on Svalbard Survived the Holocene Thermal Optimum

From Quaternary Science Reviews: “About 60% of Svalbard is covered by glaciers today, but many of these glaciers were much reduced in size or gone in the Early Holocene… Relative sea level has been rising during the last few millennia in the north and western parts of Spitsbergen, while land still emerges in the remaining part of Svalbard. Here we show that this sea level rise in the northwest is caused by the regrowth of glaciers in the Mid- to Late Holocene that slowed down, and even reversed, the post-glacial isostatic uplift and caused the crust to subside over large areas of Spitsbergen.”

Read more about the Svalbard glaciers here.

Burgerbukta Glacier, Svalbard (Source: Gary Bembridge/Creative Commons).
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NASA’s IceBridge Project- More Than Just a Pretty Image

NASA’s IceBridge project looks at Earth’s polar regions in the largest ever collection of images taken from air.

Greenland’s Steenstrup Glacier
Greenland’s Steenstrup Glacier with the Denmark Straight in the background (Source: NASA’s IceBridge Project).

As NASA states, “These flights will provide a yearly, multi-instrument look at the behavior of the rapidly changing features of the Greenland and Antarctic ice.”

This image shows the calving of the Sermeq Kujatdleg glacier in Greenland
This image shows the calving of the Sermeq Kujatdleg glacier in Greenland (Source: NASA’s IceBridge Project).
fjord of Violin Glacier
Taken May 19th, 2016 of the fjord of Violin Glacier (Source: NASA’s IceBridge Project).

The speed of ice and glacial melt continues to surprise scientists. This project will provide a unique and informative three-dimensional view.

Currently information is being collected by regional observation and satellite data collected from NASA’s Ice, Cloud and Land Elevation Satellite (ICESat).  Being able to pair this data with the new three-dimensional images could lead to crucial advances in the field.

Sea Ice
Miles of sea ice (Source: NASA’s IceBridge Project).

 

 

 

 

 

 

 

 

 

 

 

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