Karen Fontijn
@volckaren.bsky.social
Assoc Prof & Volcanologist at Université libre de Bruxelles | Volcanoes in Africa, SE Asia & S America | Hazards vs. Resources | Science for Development | Runner | She/her
Reposted by Karen Fontijn
🌋 New study from 'Bulletin of Volcanology': ~50 km dyke intrusions, 300+ M4+ quakes and major ground deformation caused infrastructure damage, underscoring Ethiopia’s seismic–volcanic risk. Highlights the need for stronger monitoring, early-warning systems. @iavcei.bsky.social bit.ly/4roTvYu
November 27, 2025 at 3:00 PM
🌋 New study from 'Bulletin of Volcanology': ~50 km dyke intrusions, 300+ M4+ quakes and major ground deformation caused infrastructure damage, underscoring Ethiopia’s seismic–volcanic risk. Highlights the need for stronger monitoring, early-warning systems. @iavcei.bsky.social bit.ly/4roTvYu
Reposted by Karen Fontijn
Following the #HayliGubbi eruption, our paper on the Erta Ale dike of Jun-Jul is finally out. InSAR, optical data and seismicity showed the temporal evolution of the intrusion and the interaction of magmatic sources, including a sill inflation in Hayli Gubbi. @earth-science.bsky.social #geoscience
Frontiers | Segmented dike intrusion linked to multi-level magma storage during and before the 2025 eruption at Erta Ale (East Africa)
IntroductionDike intrusions can assist continental rifting and plate divergence. However, our understanding of the magma dynamics during diking and the archi...
www.frontiersin.org
November 26, 2025 at 7:26 AM
Following the #HayliGubbi eruption, our paper on the Erta Ale dike of Jun-Jul is finally out. InSAR, optical data and seismicity showed the temporal evolution of the intrusion and the interaction of magmatic sources, including a sill inflation in Hayli Gubbi. @earth-science.bsky.social #geoscience
Reposted by Karen Fontijn
Our preliminary analysis of the satellite observations of the #hayligubbi #eruption is now available online: comet.nerc.ac.uk/event-respon.... Details of the eruption onset, SO2 emissions and precursory deformation.
Event Response Reports - COMET
25th November 2025: COMET Event Response Report 2.4 – Erta Ale/Hayli Gubbi Purpose/Caveats: This event response report was produced to assist situational awarenessand rapid response efforts. It repres...
comet.nerc.ac.uk
November 25, 2025 at 12:50 PM
Our preliminary analysis of the satellite observations of the #hayligubbi #eruption is now available online: comet.nerc.ac.uk/event-respon.... Details of the eruption onset, SO2 emissions and precursory deformation.
Reposted by Karen Fontijn
The #HayliGubbi eruption came after a period of unrest that started in June-July 2025 with a large dike intrusion in the southern sector of the Erta Ale rift. Our InSAR study will be out soon but you can have a summary at the link below. @earth-science.bsky.social #geoscience
Basaltic dike in Erta Ale triggers explosive eruption in Hayli Gubbi. Read our new paper!
www.frontiersin.org/journals/ear...
www.frontiersin.org/journals/ear...
Frontiers | Segmented dike intrusion linked to multi-level magma storage during and before the 2025 eruption at Erta Ale (East Africa)
Dike intrusions can assist continental rifting and plate divergence. However, our understanding of the magma dynamics during diking and the architecture of t...
www.frontiersin.org
November 25, 2025 at 4:11 AM
The #HayliGubbi eruption came after a period of unrest that started in June-July 2025 with a large dike intrusion in the southern sector of the Erta Ale rift. Our InSAR study will be out soon but you can have a summary at the link below. @earth-science.bsky.social #geoscience
Reposted by Karen Fontijn
Hayli Gubbi - some of my photos from the Hayli Gubbi tephra sampling expedition on 24 Nov 2025 from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social @wattsvolcanology.bsky.social @volckaren.bsky.social @sorcerinsar.bsky.social @alarosa.bsky.social
November 25, 2025 at 2:34 AM
Hayli Gubbi - some of my photos from the Hayli Gubbi tephra sampling expedition on 24 Nov 2025 from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social @wattsvolcanology.bsky.social @volckaren.bsky.social @sorcerinsar.bsky.social @alarosa.bsky.social
Reposted by Karen Fontijn
Activity at Hayli Gubbi began in July when there was an eruption at Erte Ale. Magma propagated 30 km south passing under Hayli Gubbi. Since then, there has been a small plume, quasi-continuous SO2 emissions and uplift. Details in @uk-comet.bsky.social event response report: tinyurl.com/y3nfdfj8
tinyurl.com
November 24, 2025 at 4:38 PM
Activity at Hayli Gubbi began in July when there was an eruption at Erte Ale. Magma propagated 30 km south passing under Hayli Gubbi. Since then, there has been a small plume, quasi-continuous SO2 emissions and uplift. Details in @uk-comet.bsky.social event response report: tinyurl.com/y3nfdfj8
The #HayliGubbi #eruption in Afar, Ethiopia, is the first documented eruption at this poorly known volcano.
Was it entirely unexpected?
Difficult to say - Berhe Goitom and colleagues already reported some seismicity in 2011-2012 so perhaps there was already some geophysical unrest for a while:
Was it entirely unexpected?
Difficult to say - Berhe Goitom and colleagues already reported some seismicity in 2011-2012 so perhaps there was already some geophysical unrest for a while:
November 24, 2025 at 10:58 AM
The #HayliGubbi #eruption in Afar, Ethiopia, is the first documented eruption at this poorly known volcano.
Was it entirely unexpected?
Difficult to say - Berhe Goitom and colleagues already reported some seismicity in 2011-2012 so perhaps there was already some geophysical unrest for a while:
Was it entirely unexpected?
Difficult to say - Berhe Goitom and colleagues already reported some seismicity in 2011-2012 so perhaps there was already some geophysical unrest for a while:
Reposted by Karen Fontijn
Here's the GVP page of Hayli Gubbi in Ethiopia: volcano.si.edu/volcano.cfm?.... Plume from the eruption can be seen in this Aqua/MODIS image cross the Red Sea to the Arabian Peninsula. #eruption #volcano
November 23, 2025 at 6:26 PM
Here's the GVP page of Hayli Gubbi in Ethiopia: volcano.si.edu/volcano.cfm?.... Plume from the eruption can be seen in this Aqua/MODIS image cross the Red Sea to the Arabian Peninsula. #eruption #volcano
Afar volcanism is known for its dyke intrusions and lava lake at Erta Ale, but here is an example of what looks like a pretty sizeable explosive eruption at a previously barely studied volcano, Hayli Gubbi 🌋🌋
An explosive #eruption of Hayli Gubbi #volcano, located SE of Erta'Ale in the Afar Rift (Ethiopia), began at ~08:30 UTC on Nov 23. Eruption onset was fortuitously captured by a @planet.com overpass at 08:31 UTC. Hayli Gubbi has no record of Holocene eruptions. Toulouse VAAC reporting ash to ~15 km.
November 24, 2025 at 9:57 AM
Afar volcanism is known for its dyke intrusions and lava lake at Erta Ale, but here is an example of what looks like a pretty sizeable explosive eruption at a previously barely studied volcano, Hayli Gubbi 🌋🌋
Reposted by Karen Fontijn
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...
Closing: October 15th
www.bristol.ac.uk/jobs/find/de...
September 17, 2025 at 9:02 PM
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...
Closing: October 15th
www.bristol.ac.uk/jobs/find/de...
Reposted by Karen Fontijn
In academia, excellence appears to come with a price tag. Stresses often normalise certain behaviours such as workaholism. In this week's blog, Katherine Villavicencio writes about the effects of workaholism in academic life, and suggests us: forget the price tag! blogs.egu.eu/divisions/gd...
The hidden effects of academic excellence: workaholism in Academia
Years have passed since I started my academic career, and I have come to realise that, in a cademia, excellence appears to come with a price tag . Stress and pressure have become commonplace for acade...
blogs.egu.eu
September 17, 2025 at 2:56 PM
In academia, excellence appears to come with a price tag. Stresses often normalise certain behaviours such as workaholism. In this week's blog, Katherine Villavicencio writes about the effects of workaholism in academic life, and suggests us: forget the price tag! blogs.egu.eu/divisions/gd...
Reposted by Karen Fontijn
If you are interested in the Fentale diking episode then have a read of Prof. Elias Lewi's new paper in Bull. Volc. link.springer.com/article/10.1... @alarosa.bsky.social @sorcerinsar.bsky.social
Scientific response to the 2024–2025 dyke intrusions in the Fentale-Dofen Region, Ethiopia: geophysical monitoring, surface manifestations, and hazard mapping - Bulletin of Volcanology
In continental rifts, tectonic deformation, magmatic processes, and earthquakes interact dynamically reflecting the crust’s complex response to extensional stress and evolving subsurface and surface c...
link.springer.com
July 15, 2025 at 4:54 AM
If you are interested in the Fentale diking episode then have a read of Prof. Elias Lewi's new paper in Bull. Volc. link.springer.com/article/10.1... @alarosa.bsky.social @sorcerinsar.bsky.social
Reposted by Karen Fontijn
Aloha folks! I am on the IAVCEI advisory board and welcome comments you’d like me to anonymously pass along to the executive committee about your #IAVCEI2025 experience (both positive and negative). Having concrete feedback is one of the best ways to ensure each experience is better than the last.
July 11, 2025 at 10:17 PM
Aloha folks! I am on the IAVCEI advisory board and welcome comments you’d like me to anonymously pass along to the executive committee about your #IAVCEI2025 experience (both positive and negative). Having concrete feedback is one of the best ways to ensure each experience is better than the last.
Reposted by Karen Fontijn
@iavcei.bsky.social made a spreadsheet of tomorrows talks #iavcei2025 - docs.google.com/spreadsheets...
IAVCEI2025schedule
docs.google.com
June 29, 2025 at 8:34 PM
@iavcei.bsky.social made a spreadsheet of tomorrows talks #iavcei2025 - docs.google.com/spreadsheets...
Reposted by Karen Fontijn
Happy #WorldHumanistDay! Here's one our favourite little definitions of humanism by our Vice President @profaliceroberts.bsky.social
June 21, 2025 at 7:35 AM
Happy #WorldHumanistDay! Here's one our favourite little definitions of humanism by our Vice President @profaliceroberts.bsky.social
Reposted by Karen Fontijn
On Italy’s Republic Day, Etna isn’t holding back 🌋🇮🇹 Activity started with mild Strombolian explosions that quickly intensified. A small lava flow made its way down the Valle del Bove. A particularly remarkable event just occurred: part of the Southeast Crater collapsed, triggering a PDC
June 2, 2025 at 1:13 PM
On Italy’s Republic Day, Etna isn’t holding back 🌋🇮🇹 Activity started with mild Strombolian explosions that quickly intensified. A small lava flow made its way down the Valle del Bove. A particularly remarkable event just occurred: part of the Southeast Crater collapsed, triggering a PDC
Reposted by Karen Fontijn
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May 31, 2025 at 1:13 PM
Our readers are discerning, curious, and globally engaged — just like you. If you know someone who’d appreciate journalism that respects their intelligence and doesn’t waste their time, send The Continent their way.
Check out our subscription options (platform not payment).
Check out our subscription options (platform not payment).
Reposted by Karen Fontijn
Reposted by Karen Fontijn
#MSH45 | May 19 | AM
Dawn breaks over the smoldering volcano, a hulk of its former self.
Yesterday morning, a 9,677-foot peak known as the "Fuji of America"—graceful, snowcapped, symmetrical.
Today, a shattered crater and seared wasteland for miles north, west, and east.
Dawn breaks over the smoldering volcano, a hulk of its former self.
Yesterday morning, a 9,677-foot peak known as the "Fuji of America"—graceful, snowcapped, symmetrical.
Today, a shattered crater and seared wasteland for miles north, west, and east.
May 19, 2025 at 3:14 PM
#MSH45 | May 19 | AM
Dawn breaks over the smoldering volcano, a hulk of its former self.
Yesterday morning, a 9,677-foot peak known as the "Fuji of America"—graceful, snowcapped, symmetrical.
Today, a shattered crater and seared wasteland for miles north, west, and east.
Dawn breaks over the smoldering volcano, a hulk of its former self.
Yesterday morning, a 9,677-foot peak known as the "Fuji of America"—graceful, snowcapped, symmetrical.
Today, a shattered crater and seared wasteland for miles north, west, and east.
Reposted by Karen Fontijn
No Paris-Roubaix without a geology story!
Marjolein Naudé explains in this clip how the Hell of the North froze over and made the muddy, dusty mess we all love so much!
And read more in our blog: www.geo-sports.org/2024/geology...
youtu.be/R00JSTLw-f0?...
Marjolein Naudé explains in this clip how the Hell of the North froze over and made the muddy, dusty mess we all love so much!
And read more in our blog: www.geo-sports.org/2024/geology...
youtu.be/R00JSTLw-f0?...
Geology of Paris-Roubaix - When did the Hell of the North break loose?
YouTube video by Geo-Sports - The Geology of Sports Events
youtu.be
April 13, 2025 at 7:51 AM
No Paris-Roubaix without a geology story!
Marjolein Naudé explains in this clip how the Hell of the North froze over and made the muddy, dusty mess we all love so much!
And read more in our blog: www.geo-sports.org/2024/geology...
youtu.be/R00JSTLw-f0?...
Marjolein Naudé explains in this clip how the Hell of the North froze over and made the muddy, dusty mess we all love so much!
And read more in our blog: www.geo-sports.org/2024/geology...
youtu.be/R00JSTLw-f0?...
Interested in #volcano #geology? Check out our chapter on Volcano Stratigraphy and Mapping for the upcoming 3rd edition of the Encyclopedia of Volcanoes! 🌋🌋🌋
eartharxiv.org/repository/v... 👇🏽
eartharxiv.org/repository/v... 👇🏽
Volcano stratigraphy and mapping
eartharxiv.org
April 9, 2025 at 5:49 PM
Interested in #volcano #geology? Check out our chapter on Volcano Stratigraphy and Mapping for the upcoming 3rd edition of the Encyclopedia of Volcanoes! 🌋🌋🌋
eartharxiv.org/repository/v... 👇🏽
eartharxiv.org/repository/v... 👇🏽
Reposted by Karen Fontijn
eruption at south end of Sundhnukar now !
#volcanism #icealnd #geosciences
from www.youtube.com/watch?v=VjKk...
#volcanism #icealnd #geosciences
from www.youtube.com/watch?v=VjKk...
April 1, 2025 at 9:55 AM
eruption at south end of Sundhnukar now !
#volcanism #icealnd #geosciences
from www.youtube.com/watch?v=VjKk...
#volcanism #icealnd #geosciences
from www.youtube.com/watch?v=VjKk...
"We are in grave, grave danger of forgetting"
March 29, 2025 at 12:17 PM
"We are in grave, grave danger of forgetting"
Reposted by Karen Fontijn
On this International Day for the Elimination of Racial Discrimination, we plug our “Debiasing Committee Composition and Deliberative Processes”, a 1-pager w/strategies for diversifying perspectives & reducing biases for hiring, promotion, tenure, and funding decisions.
sfdora.org/resource/ret...
sfdora.org/resource/ret...
Rethinking Research Assessment: Debiasing Committee Composition and Deliberative Processes | DORA
This is part of DORA’s toolkit of resources to support academic institutions that are improving their policies and practices. Find the other resources in the toolkit here. Debiasing Committee Composit...
sfdora.org
March 21, 2025 at 2:31 PM
On this International Day for the Elimination of Racial Discrimination, we plug our “Debiasing Committee Composition and Deliberative Processes”, a 1-pager w/strategies for diversifying perspectives & reducing biases for hiring, promotion, tenure, and funding decisions.
sfdora.org/resource/ret...
sfdora.org/resource/ret...
Reposted by Karen Fontijn
M6.0 just now in Ethiopia, highest magnitude #earthquake in the swarm up until this point in time. The moment tensor only shows 12% double couple, which commonly means that the earthquake is not caused by rupture on a single flat fault plane (or it could just be poorly determined). 🌋🧪⚒️
February 14, 2025 at 9:03 PM
M6.0 just now in Ethiopia, highest magnitude #earthquake in the swarm up until this point in time. The moment tensor only shows 12% double couple, which commonly means that the earthquake is not caused by rupture on a single flat fault plane (or it could just be poorly determined). 🌋🧪⚒️