āļø š§ŖEarth scientist / geologist reconstructing past environmental change mainly from lake sediments from Antarctica, Arctic, S. America, Nepal, UK and other places
š”Cambridge, UK
š³ļøāš he/him
Instagram @antarctic_diary
Stephen Roberts
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A great day of talks at the @iapetusdtp.bsky.social annual conference - and @drheatherprice.bsky.social and I found where #KateandWills met (for coffee)
Kicking day two off of the #Iapetus #StudentConference
And more great talks in our second session of the first day! Looking forward to Day 2 today ā¦ #Iapetus #StudentConference
Stephen Roberts
Iapetus DTP
Iapetus DTP
... 3/3 The new cosmogenic C-14 ages show that ice-free nunataks in the Amundsen Sea Embayment region likely became ice free between 5,000 and 3,000 years ago - later than previous cosmogenic Be-10 age estimates of 8,000 to 6,000 years ago (from the same erratic samples)
Excellent new paper by Jonathan Adams from his PhD comparing C-14 and Be-10 cosmogenic exposure ages from glacially-transported erratic cobbles, which we collected from around Mount Murphy as part of the @bas.ac.uk / @ukri.org - funded ANiSEED project.
More details here: doi.org/10.5194/gchr...
Stephen Roberts
Link to British Antarctic Survey press release about Chuxian Li et al.ās new paper just published in PNAS:
Ancient poo reveals uncertain future for Antarctic seabirds
www.bas.ac.uk/news/ancient...
Stephen Roberts
Trip to beautiful Heidelberg to discuss our new palaeotsunami Shetland Islands project to look at cores/data, train up the Rhine to Bonn for a DFG meeting, back via Koln/Brussels @bas.ac.uk @uniheidelberg.bsky.social @drmaex.bsky.social #collaboration #tsunami #shetland #sedimentology
The cosmogenic C-14 exposure ages in this paper provide the most accurate chronological constraints to date for when this part of the West Antarctic Ice sheet deglaciated ... 2/3
Video
Stephen Roberts
Stephen Roberts
Stephen Roberts
doi.org
Abstract. Cosmogenic-nuclide surface exposure ages provide empirical data for validating models simulating the timing and pace of ice-sheet response to a warming climate. Increasing emphasis is being ...
Great first session in our first day at the Iapetus Student Conference yesterday, hosted by our St Andrews students. We enjoyed some excellent presentations from our students!
Iapetus DTP
Layers of ancient bird droppings preserved in the peatlands of the sub-Antarctic island of Bird Island have given scientists a window into 8,000 years of seabird history.
