<
https://theconversation.com/we-used-1-000-historical-photos-to-reconstruct-antarctic-glaciers-before-a-dramatic-collapse-233972>
"In March 2002, the Larsen B Ice Shelf collapsed catastrophically, breaking up
an area about one-sixth the size of Tasmania.
In a paper published today in
Scientific Reports, we used nearly 1,000 film
photographs of Antarctica from the 1960s to reconstruct exactly what five
glaciers were like decades before the Larsen B Ice Shelf collapse. This allowed
us to precisely calculate their contribution to sea-level rise.
Although Antarctica is far away, and changing conditions there may seem
distant, the changes can have a profound effect for us all. The removal of an
ice shelf can cause glaciers to rapidly melt into the ocean and raise global
sea levels.
After consecutive years of unusually warm temperatures, the Larsen B Ice Shelf
collapsed over the course of a week. This induced dramatic change for the
glaciers that used to flow into it. The glaciers have since been thoroughly
monitored – but there were few observations of them before 2002.
However, an archive of more than 300,000 historical images contains an
invaluable record of this area from 1968 and helped us measure the difference
between then and now."
Cheers,
*** Xanni ***
--
mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
