A spike in central Arctic Ocean radium levels startled scientists — and led to discoveries about how the ocean is rapidly changing
Scientists found that the amount of radium-228 in the central Arctic ocean had nearly doubled between 2007 and 2015. They traced it to shallow continental shelves where dramatic changes are taking place.
In 2007, researchers climbed onto the icebreaker Polarstern and debarked from the northern Norwegian city of Tromsø, which sailed to the central Arctic Ocean. Here, they took samples of the surface water, examining them for a special isotope, radium-228.
Access to content from the Arctic Knowledge Archives is available to Passport holders only.
Arctic Today is a non-profit organization, supported by donations from readers like you. While we strongly believe in giving free access to current news for all readers, we reserve content older than one year for our supporters. All individual contributions of at least $20/month or $150/year will receive a Passport to the Arctic Knowledge Archives. Help us drive the leading non-profit editorial team dedicated to delivering context, information and analysis about events in the Arctic.
Already have a Passport? Sign in
choose your level of support and unlock your Arctic Passport.
- Monthly
- Annually
- Groups & Institutions
Individual Annual
$150.00
Year
Individual Monthly
$20.00
Month
Individual Monthly
$20.00
0
Individual Yearly
$150.00
0
