Frederik Dahl Madsen
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fdmadsen.bsky.social
Frederik Dahl Madsen
@fdmadsen.bsky.social
He/Him
PhD student at the University of Edinburgh. Keen geophysicist with interest in Geomagnetism, Earth's Rotation, and Outreach!
FRAS, Postgraduate Rep for British Geophysical Association
That’s very sweet of you, @hughpumphrey.bsky.social, thank you very much for advertising this!
December 7, 2025 at 3:43 PM
Thanks Hugh! And thanks again for letting me trial this in your course, and for doing the feedback! 🤩
December 1, 2025 at 10:46 PM
Well said, Natalia! 👏🏼
November 25, 2025 at 12:03 PM
We were super grateful to have you today, Chris! Thanks for coming along and sharing your wisdom and good advice ☺️🙏🏼
November 14, 2025 at 6:53 PM
I am surprised they're not on Bluesky yet, but I am sure that will come soon!

If you're interested in getting your university involved with the journal, do reach out to Jack, the principal contact. His contact details are found through here: journals.ed.ac.uk/esjs/about/c...
Contact | Edinburgh Student Journal of Science
journals.ed.ac.uk
November 13, 2025 at 11:31 AM
If you haven't come across the #ESJS yet, it's an @edinburghdiamond.bsky.social hosted journal, specifically designed for undergraduates to publish their science, and for PhD students to gain experience in reviewing!

It's open to most universities in central Scotland, but is growing fast!
Edinburgh Student Journal of Science
journals.ed.ac.uk
November 13, 2025 at 11:29 AM
It’s a beautiful place!
November 4, 2025 at 3:30 PM
Do you need some WD40?
November 3, 2025 at 8:32 AM
Disclaimer: It feels like the post description doesn’t match the article, but it was the article I wanted to repost!
October 27, 2025 at 6:25 PM
You are correct - the atmosphere also has 6-year periods - they co-exist with the ones we see from the core (which we would expect to exist, as per ex. Mound and Buffett 2003).

I can recommend this recent review that interprets all these signals holistically.
doi.org/10.1007/s10712-024-09874-4
Why is the Earth System Oscillating at a 6-Year Period? - Surveys in Geophysics
A 6-year cycle has long been recognized to influence the Earth’s rotation, the internal magnetic field and motions in the fluid Earth’s core. Recent observations have revealed that a 6-year cycle also...
doi.org
October 15, 2025 at 9:38 AM