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Mike Cassidy

@mikevolc.bsky.social
572 followers 394 following 43 posts

Volcano Scientist | Associate Prof @unibirmingham.bsky.social | Research Affiliate @cser.bsky.social | Co-founder @gvra.bsky.social | Geology | Environmental change and sustainability | Dad of 2 | First gen

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Mike Cassidy @mikevolc.bsky.social · 29/01/2026
Great to hear Erik- always liked your writings!
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Nick Barber 🌋 @volcannick.bsky.social · 19/01/2026
Really cool summary of a recent paper in Geology (gift link 🎁): www.nytimes.com/2026/01/16/s...
nytimes.com
If the Volcanic Eruption Doesn’t Scare You, the Mudflow Should
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Dr. Erik Klemetti Gonzalez @eruptions.site · 25/11/2025
Campi Flegrei and Vesuvius in the Bay of Naples area are extremely hazardous. Millions of people live in or near restless volcanoes. Not sure if we're looking at a catastrophic eruption in our lifetime, but a repeat of 1538 Monte Nuovo would still be dramatic.
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Melaine Le Roy @subfossilguy.bsky.social · 12/12/2025
New study found the largest lahar of the last millennium occurred at Mt Rainier (4.392 m, WA) at the end of the year 1507! 🏔️🌊⌚ Wonderful tree rings... 🥰🌲💍 pubs.geoscienceworld.org/gsa/geology/...
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Nick Barber 🌋 @volcannick.bsky.social · 04/12/2025
This is a must read. A point that resonates with me: the hubris of administrators to decide what is worthy of a degree. You want to create a school where students can study climate change, yet you plan to fire all the geographers, paleontologists, climatologists, and sedimentologists??
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Mike Cassidy @mikevolc.bsky.social · 25/11/2025
It's not the first time a hidden volcano has caught us unawares and it won't be the last. This is why we founded the Global Volcano Risk Alliance @gvra.bsky.social, to improve preparedness, strengthen monitoring and make sure the next “unexpected” eruption doesn’t become a global crisis.
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Mike Cassidy @mikevolc.bsky.social · 25/11/2025
While I was writing an article for the @uk.theconversation.com about why the world's little-known volcanoes may pose the greatest threat, an eruption from a volcano that has had no major documented eruption since the ice age erupted: #HayliGubbi volcano, Ethiopia theconversation.com/the-worlds-l...
theconversation.com
The world’s little-known volcanoes pose the greatest threat
In regions like the Pacific, South America and Indonesia, an eruption from a volcano with no recorded history occurs every seven to ten years.
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David Pyle @davidmpyle.bsky.social · 25/11/2025
Fascinating and timely work on the intrusion that preceded the #HayliGubbi eruption - this will turn out to be a very valuable example for volcanologists!
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Dr. Erik Klemetti Gonzalez @eruptions.site · 23/11/2025
I whipped up a new post/newsletter extra for the Hayli Gubbi eruption. First time I've had to post an extra edition! #volcano #eruption eruptions.beehiiv.com/p/eruptions-...
eruptions.beehiiv.com
Eruptions Newsletter Extra for November 23, 2025
Unexpected eruption from Hayli Gubbi in Ethiopia.
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Culture Volcan @culturevolcan.bsky.social · 27/10/2025
#volcan #volcano #Taal 🇵🇭 Des explosions phréatiques ou préatomagmatiques parfois assez spectaculaires sont observées dans le lac/Some relatively impressive phreatic or phreatomagmatic explosions are observed in the lake www.youtube.com/watch?v=Enjx...
youtube.com
Multiple minor eruptions rock Taal Volcano on Oct. 26
YouTube video by Manila Bulletin
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Mike Cassidy @mikevolc.bsky.social · 20/10/2025
And another one about ammending membership fees: www.iavceivolcano.org/proposal-for...
iavceivolcano.org
Proposal for revision of membership fees, salary caps, and donations to IAVCEI
During our Meeting of Members in Geneva on 2 July 2025, the Executive Committee (EC) tabled a proposal to revise IAVCEI’s membership fees. There followed a lively and constructive discussion from the…
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Mike Cassidy @mikevolc.bsky.social · 20/10/2025
An important vote for volcanologists/IAVCEI members that you might have missed (see page 49 in Newsletter), about a "proposal change to allow a president to run for multiple terms of office" Vote here: www.iavceivolcano.org/proposal-cha...
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St Andrews Earth & Environmental Sciences @earthscista.bsky.social · 07/10/2025
Over the last six weeks, SEES scientists Mengwen, Patrick, Helen & Andrea jointed the Beyond EPICA – Oldest Ice project, which aims to analyse the oldest ice on Earth – up to 1.5 million years old, beyond the 800,000 years previously covered – to understand more about Earth's climate 🧊🧪🥼 @bas.ac.uk
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Dr. Erik Klemetti Gonzalez @eruptions.site · 02/10/2025
So, no more Smithsonian/USGS Weekly Volcanic Activity Report until the government reopens ...
media.tenor.com
a man in a maroon shirt with the words this is why we dont have nice things
ALT: a man in a maroon shirt with the words this is why we dont have nice things
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Isobel Yeo @isobelyeo.bsky.social · 30/09/2025
Great to see @mikeaclare.bsky.social @noc.ac.uk quoted in this piece in the Guardian today www.theguardian.com/news/2025/se... about the Hunga Volcano eruption and the subsequent telecommunications outage in 2022.
theguardian.com
Extremely offline: what happened when a Pacific island was cut off from the internet | Samanth Subramanian
A colossal volcanic eruption in January 2022 ripped apart the underwater cables that connect Tonga to the world – and exposed the fragility of 21st-century life
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Jenni Barclay @volcanojenni.bsky.social · 26/09/2025
www.beinghumanfestival.org/events/missi... Volcanic crises! Archives! The ‘real story’ between the lines. We’re performing a ‘staged reading’ and exploring two crises on #montserrat - with two wonderful playwrights as part of #beinghumanfestival. Come see us in London and also 1/2
beinghumanfestival.org
Missives - London
A crisis unravelling in letters. Many enquiries have tried to ‘learn lessons’ from crises provoked by natural hazards. Often, disaster is rooted in the misfiring communication and stalled decision-mak...
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Thomas R. Walter @trwalter.bsky.social · 24/09/2025
New paper alert. Volcanic crisis reveals coupled magma system at Santorini and Kolumbo. Great work led by Marius and Jens, thanks all for working on that together! It can be found in today’s issue of Nature. www.nature.com/articles/s41...
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Mike Cassidy @mikevolc.bsky.social · 22/09/2025
Yes indeed!
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Univ. Bristol Volcanology Group @bristolvolcanology.bsky.social · 17/09/2025
We are advertising for a 3-year "Senior Research Associate in Volcanic Petrology and Stratigraphy". Part of a Leverhulme-funded interdisciplinary research grant "Volcanic Histories", focused on research in the Eastern Caribbean. Closing: October 15th www.bristol.ac.uk/jobs/find/de...
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PAGES (Past Global Changes) @pages-ipo.bsky.social · 17/09/2025
PAGES September newsletter is out! Find out what the 2k Network, CRIAS, Human Traces, PO2, SISAL and VICS working groups are up to, and much more on the paleoscience calendar! ℹ️ pastglobalchanges.org/news/138628 @pastoxygen.bsky.social
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Dr. Erik Klemetti Gonzalez @eruptions.site · 16/09/2025
I shared this earlier, but this is *exactly* the point I try to make whenever I get the question about "which volcano will be the next to have a big eruption?" It is rarely the ones that are in the headlines at the time.
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Many thanks Cin-Ty!
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Thanks David, true on both counts!
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Thanks for the kind words Ben!
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Thanks Vicky!
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Thanks Brendan! Indeed - there's still life in those Aussie volcanoes!
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
We’ve founded the Global Volcano Risk Alliance (@gvra.bsky.social) to prepare for the eruptions that could reshape our world. If you’d like to support our work: www.globalvolcanoriskalliance.com
globalvolcanoriskalliance.com
Global Volcano Risk Alliance
Photo credit: UWI Seismic Research Centre
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Famous names—Yellowstone, Etna, Kīlauea—draw the cameras. But the most dangerous volcanoes may be the “quiet” ones, hidden in jungles or beneath the sea, biding their time.
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Yet volcanology is chronically underfunded + uneven. 📊 More papers on Mt St Helens alone (1,437) than all 123 volcanoes in Indonesia combined. Only ~600 of Earth’s 1,302 active volcanoes have any monitoring instruments.
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
It’s not that rare: 75% of VEI-5 eruptions (like El Chichón or Mt St Helens) followed 100+ yrs of silence. 90% of VEI-6 eruptions (10x bigger) too. And in regions like Indonesia or the Pacific, a volcano with no known history erupts every 7–10 yrs.
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
Take El Chichón in Mexico. For centuries it looked like a harmless hill. Then in 1982 it erupted, killing thousands, displacing tens of thousands more… and helping trigger famine in Ethiopia, half a world away.
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Mike Cassidy @mikevolc.bsky.social · 16/09/2025
🌋 Excited to share my new essay in Aeon: one of the most underappreciated global risks isn’t an asteroid or supervolcano—it’s the eruptions we don’t see coming:
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Mike Cassidy @mikevolc.bsky.social · 16/07/2025
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Mike Cassidy @mikevolc.bsky.social · 16/07/2025
We think applying to grad school should be free. App fees create barriers to equity in academia—especially in the US, where students can pay $1,000+ just to be considered. Even waivers don’t fix this. We make the case in our Nature piece: www.nature.com/articles/d41...
nature.com
It should be free to apply to graduate school
Letter to the Editor
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Mike Cassidy @mikevolc.bsky.social · 16/06/2025
SIgn up to our newsletter if you haven't already!
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Mike Cassidy @mikevolc.bsky.social · 29/05/2025
If anyone's going to the @undrr.bsky.social Global Platform for Disaster Risk Reduction in Geneva next week, please reach out. Several of us from the charity @gvra.bsky.social will be there and would be keen to chat about it!
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Mike Cassidy @mikevolc.bsky.social · 11/04/2025
Ah nice! We should be celebrating these successes
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Mike Cassidy @mikevolc.bsky.social · 11/04/2025
The St Vincent eruption shows that preparedness and early anticipatory action can avert a volcanic disaster!
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Mike Cassidy @mikevolc.bsky.social · 17/02/2025
Now that it's thought the sesimic activity around Santorini is caused by magma, authorities plan an emergency port. Important to note that the vast proportion of magmatic unrest on volcanoes doesn't lead to eruptions, but preparation is key in cases where they might.
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Dr. Erik Klemetti Gonzalez @eruptions.site · 06/02/2025
It does look like the Washington VAAC (Volcanic Ash Advisory Center) is still up and issuing alerts, but if that stops ... ho boy, that could get messy. The VAAC is a NOAA operation.
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Jenni Barclay @volcanojenni.bsky.social · 03/02/2025
Did you know that several @iavcei.bsky.social AWARDS are open for nominations at the moment! Re-vamped instructions can be found here www.iavceivolcano.org/call-for-nom... Each nomination needs 1 lead and 3 supporters. LEAD must be IAVCEI member. Awards support different career stages! 🧵
iavceivolcano.org
Call for nominations for the 2025 IAVCEI awards
The call for nominations for the following 2025 IAVCEI medals and awards is now open: Nominations must be submitted by 7 March 2025 (midnight Central European Time) and sent to the IAVCEI secretariat…
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Dr. Samantha Montano @samlmontano.bsky.social · 04/02/2025
This effectively ends all nsf-funded disaster research.
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Global Volcano Risk Alliance @gvra.bsky.social · 15/01/2025
Today marks 3 years since the powerful eruption of the Hunga Tonga volcano that generated a tsunami that struck Tonga & severed communication lines. This eruption was a key motivator for the formation of GVRA & our co-founders @mikevolc.bsky.social & @laramani14.bsky.social spoke to DW about it:
dw.com
Hunga-Tonga volcano eruption sparks concern – DW – 07/02/2024
When underwater volcano Hunga Tonga-Hunga Ha'apai erupted in the South Pacific in 2022 researchers were alarmed. The are now calling for closer volcano monitoring.
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Gavin Foster @thefosterlab.bsky.social · 14/01/2025
Do you have a burning question about Earth Sciences? Well Nature reviews earth and environment just launched "Ask and Expert": www.nature.com/articles/s43.... Just fill in this form forms.office.com/Pages/Respon... 🧪⚒️🌊
nature.com
Introducing ‘Ask an Expert’ - Nature Reviews Earth & Environment
Nature Reviews Earth & Environment is pleased to launch a new article type — Ask an Expert — that offers the public an opportunity to have their burning questions about Earth science answered.
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Centre for the Study of Existential Risk @cser.bsky.social · 07/01/2025
Curious about the types of topics covered in the MPhil in Global Risk and Resilience? Explore the links below to learn more about Environmental Risk: ⬇️
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Global Volcano Risk Alliance @gvra.bsky.social · 20/12/2024
We wanted to end the year with a big thank you to everyone for their wonderful support this year, and to wish you all a restful festive season! We're really excited for 2025 and look forward to engaging with you all in the New Year! 🌋🎁🎄
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VMSG @vmsg.bsky.social · 18/12/2024
We have now created our VMSG starter pack, feel free to share amongst your networks & keep adding your suggestions for students, staff & alumni to include!
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Jenni Barclay @volcanojenni.bsky.social · 17/12/2024
Shout out to our @vmsg.bsky.social community! With the fabulous annual meeting coming up after 🎄🎄Time to make a vmsg starter pack! Reply if you would like to join! 😊
media.tenor.com
a black and white photo of a volcano erupting with the words `` i lava you '' .
Alt: a black and white photo of a volcano erupting with the words `` i lava you '' .
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Mike Cassidy @mikevolc.bsky.social · 03/12/2024
Thanks Hugh! Loved my time at Lancaster- it was formative for my career!
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