Szabolcs Harangi
@sharangi.bsky.social
Volcanologist and petrologist from Hungary. Professor, Head of Volcanology Research Group and Volcano blogger
Reposted by Szabolcs Harangi
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 Szabolcs Harangi
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 Szabolcs Harangi
The Hayli Gubbi tephra has been sampled. These are photos from my sampling expedition on 24 Nov with the University of Semera from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social
November 25, 2025 at 2:29 AM
The Hayli Gubbi tephra has been sampled. These are photos from my sampling expedition on 24 Nov with the University of Semera from around 10 km north of Hayli Gubbi @sorcerinsar.bsky.social @alarosa.bsky.social
Reposted by Szabolcs Harangi
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
Reposted by Szabolcs Harangi
We think there was a small eruption there in July/August (at least a small plume) and some ongoing activity there since (including continued uplift). I suspect all linked to recent activity along dyke from Erta Ale (See COMET reports on July/August activity at comet.nerc.ac.uk/event-respon...).
Event Response Reports - COMET
4th September 2025: COMET Event Response Report 1.9 – Fentale Volcano, Ethiopia Purpose/Caveats: This event response report was produced to assist situational awareness and rapid response efforts. It...
comet.nerc.ac.uk
November 24, 2025 at 4:35 PM
We think there was a small eruption there in July/August (at least a small plume) and some ongoing activity there since (including continued uplift). I suspect all linked to recent activity along dyke from Erta Ale (See COMET reports on July/August activity at comet.nerc.ac.uk/event-respon...).
Reposted by Szabolcs Harangi
Sentinel-5P #TROPOMI measurements at ~11:00 UTC show most of the SO₂ emissions from #HayliGubbi spreading east in the upper troposphere. Plume contains ~44 kilotons of SO₂ (~0.04 Tg).
November 23, 2025 at 5:53 PM
Sentinel-5P #TROPOMI measurements at ~11:00 UTC show most of the SO₂ emissions from #HayliGubbi spreading east in the upper troposphere. Plume contains ~44 kilotons of SO₂ (~0.04 Tg).
Reposted by Szabolcs Harangi
This figure from a perspective piece on our paper by Virginie Pinel beautifully illustrates our proposed magma-pumping mechanism!
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
November 22, 2025 at 9:21 PM
This figure from a perspective piece on our paper by Virginie Pinel beautifully illustrates our proposed magma-pumping mechanism!
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Eruption of low-T crystal mush and determination of amphibole-melt partition coefficient relevant for silicic magmas close to the thermal minimum. Thermomechanical reactivation can lead to reawakening of a volcano after prolonged quiescence!
New paper: link.springer.com/article/10.1...
New paper: link.springer.com/article/10.1...
Petrogenesis and amphibole–melt trace element partitioning of the 156 ka Haramul Mic crystal-rich dacite, Ciomadul, Romania - Contributions to Mineralogy and Petrology
The 156 ka, crystal-rich (~ 40 vol%) Haramul Mic dacite represents eruption of a crystal mush. It marks the first eruptive product of the Ciomadul Volcanic Complex, East-Central Europe, following at l...
link.springer.com
October 18, 2025 at 4:24 PM
Eruption of low-T crystal mush and determination of amphibole-melt partition coefficient relevant for silicic magmas close to the thermal minimum. Thermomechanical reactivation can lead to reawakening of a volcano after prolonged quiescence!
New paper: link.springer.com/article/10.1...
New paper: link.springer.com/article/10.1...
drone picture shows lava dome filled the crater of the Lewotobi volcano taken yesterday by Mbah Lurah. This might explain the initial Vulcanian phase of the large eruption occurred today.
July 7, 2025 at 2:37 PM
drone picture shows lava dome filled the crater of the Lewotobi volcano taken yesterday by Mbah Lurah. This might explain the initial Vulcanian phase of the large eruption occurred today.
Lewotobi, Flores, Indonesia - vulcanian to subplinian eruption with pyroclastic flows today
photo: @jose465886 twitter/X
photo: @jose465886 twitter/X
July 7, 2025 at 1:22 PM
Lewotobi, Flores, Indonesia - vulcanian to subplinian eruption with pyroclastic flows today
photo: @jose465886 twitter/X
photo: @jose465886 twitter/X
Reposted by Szabolcs Harangi
#IAVCEI2025 It was my absolute privilege to coordinate a fantastic group of hard working colleagues that delivered a Scientific assembly of which we are proud
July 5, 2025 at 5:04 PM
#IAVCEI2025 It was my absolute privilege to coordinate a fantastic group of hard working colleagues that delivered a Scientific assembly of which we are proud
The crowd of volcanologists!… the #IAVCEI2025 general assembly started with important messages such as “curiosity drives human progress…” and “science and education is the best investment to the future…”
June 29, 2025 at 9:30 PM
The crowd of volcanologists!… the #IAVCEI2025 general assembly started with important messages such as “curiosity drives human progress…” and “science and education is the best investment to the future…”
Understanding processes in trans-crustal magma reservoirs - come and apply for a 2-3 years postdoctoral fellowship to a young Hungarian research group (pannonvulkan.hu)! Details of the MSCA programme are here: momentummsca.mta.hu contact: [email protected]
May 14, 2025 at 1:19 PM
Understanding processes in trans-crustal magma reservoirs - come and apply for a 2-3 years postdoctoral fellowship to a young Hungarian research group (pannonvulkan.hu)! Details of the MSCA programme are here: momentummsca.mta.hu contact: [email protected]
IAVCEI CVS goes to Hungary! A fantastic 5 days in the field to better understand deposition of volcanogenic sediments in the natural laboratory of the northern Pannonian Basin: from diatremes through ignimbrites to lahar and volcanogenic fluvial deposits with instructive discussions!
April 12, 2025 at 1:25 PM
IAVCEI CVS goes to Hungary! A fantastic 5 days in the field to better understand deposition of volcanogenic sediments in the natural laboratory of the northern Pannonian Basin: from diatremes through ignimbrites to lahar and volcanogenic fluvial deposits with instructive discussions!
Reposted by Szabolcs Harangi
🧪⚒️
Two days after the M7.7 earthquake in Myanmar, what have we learned?
Rapid seismological analyses shared by scientists suggest that the rupture was both longer and faster than expected - two factors that could have increased damage.
Read more: earthquakeinsights.substack.com/p/updates-on...
Two days after the M7.7 earthquake in Myanmar, what have we learned?
Rapid seismological analyses shared by scientists suggest that the rupture was both longer and faster than expected - two factors that could have increased damage.
Read more: earthquakeinsights.substack.com/p/updates-on...
Updates on the M7.7 Myanmar earthquake
An unusually long, possibly supershear rupture
earthquakeinsights.substack.com
March 30, 2025 at 7:43 PM
🧪⚒️
Two days after the M7.7 earthquake in Myanmar, what have we learned?
Rapid seismological analyses shared by scientists suggest that the rupture was both longer and faster than expected - two factors that could have increased damage.
Read more: earthquakeinsights.substack.com/p/updates-on...
Two days after the M7.7 earthquake in Myanmar, what have we learned?
Rapid seismological analyses shared by scientists suggest that the rupture was both longer and faster than expected - two factors that could have increased damage.
Read more: earthquakeinsights.substack.com/p/updates-on...
Reposted by Szabolcs Harangi
Today's #earthquake near Mandalay, Myanmar, had magnitude Mw 7.7 to 7.9.
Prelim. source models point to rupture duration & length of ~120s and at least 200km. It likely filled large part of seismic gap S of Sagaing (previous rupture in 1839) ⚒️ 🧪
Map from doi.org/10.1002/2013... (Wang et al.)
1/n
Prelim. source models point to rupture duration & length of ~120s and at least 200km. It likely filled large part of seismic gap S of Sagaing (previous rupture in 1839) ⚒️ 🧪
Map from doi.org/10.1002/2013... (Wang et al.)
1/n
March 28, 2025 at 4:47 PM
Today's #earthquake near Mandalay, Myanmar, had magnitude Mw 7.7 to 7.9.
Prelim. source models point to rupture duration & length of ~120s and at least 200km. It likely filled large part of seismic gap S of Sagaing (previous rupture in 1839) ⚒️ 🧪
Map from doi.org/10.1002/2013... (Wang et al.)
1/n
Prelim. source models point to rupture duration & length of ~120s and at least 200km. It likely filled large part of seismic gap S of Sagaing (previous rupture in 1839) ⚒️ 🧪
Map from doi.org/10.1002/2013... (Wang et al.)
1/n
Reposted by Szabolcs Harangi
⚒️ 🧪
A catastrophic M7.7 earthquake struck Myanmar today, rupturing ~200 km of the strike-slip Sagaing Fault.
The USGS PAGER alert is red, indicating severe damage and many fatalities. Impacts extend from Myanmar into neighboring countries, including Thailand.
What do we know so far?
A catastrophic M7.7 earthquake struck Myanmar today, rupturing ~200 km of the strike-slip Sagaing Fault.
The USGS PAGER alert is red, indicating severe damage and many fatalities. Impacts extend from Myanmar into neighboring countries, including Thailand.
What do we know so far?
Catastrophic M7.7 earthquake caused by rupture of Sagaing Fault in Myanmar
Limited reporting thus far from Myanmar, but this is a big one
earthquakeinsights.substack.com
March 28, 2025 at 5:13 PM
⚒️ 🧪
A catastrophic M7.7 earthquake struck Myanmar today, rupturing ~200 km of the strike-slip Sagaing Fault.
The USGS PAGER alert is red, indicating severe damage and many fatalities. Impacts extend from Myanmar into neighboring countries, including Thailand.
What do we know so far?
A catastrophic M7.7 earthquake struck Myanmar today, rupturing ~200 km of the strike-slip Sagaing Fault.
The USGS PAGER alert is red, indicating severe damage and many fatalities. Impacts extend from Myanmar into neighboring countries, including Thailand.
What do we know so far?
Reposted by Szabolcs Harangi
This includes the USGS Hawaiian and Alaska Volcano Observatories. HVO's Ironworks is a temporary space while a new facility is built to replace the Observatory critically damaged in 2018. Both groups are near their volcanoes. Neither has anywhere to go and both have been forbidden from telework.
Congress has just released a list of federal DOI offices to be closed under the ongoing massacre of our natural resource agencies -- it's extensive and includes many important NPS, BLM, USGS and USFWS facilities across the country. Truly horrific. democrats-naturalresources.house.gov/imo/media/do...
democrats-naturalresources.house.gov
March 2, 2025 at 3:53 PM
This includes the USGS Hawaiian and Alaska Volcano Observatories. HVO's Ironworks is a temporary space while a new facility is built to replace the Observatory critically damaged in 2018. Both groups are near their volcanoes. Neither has anywhere to go and both have been forbidden from telework.
Reposted by Szabolcs Harangi
HVO and AVO office leases are both on that list (I didn't see YVO or CVO when I skimmed it?). HVO is the oldest volcano observatory in the world and monitors the most persistently active volcanoes in the US. AVO monitors very high-risk volcanoes that can esp impact int'l air travel.
Reported by a follower (unverified at this moment): Alaska Science Center Grace Hall in Anchorage which houses the Alaska Volcano Observatory and ASC servers is on the chopping block. Moving the server room would cost upwards of $1.5 million.
March 2, 2025 at 3:19 PM
HVO and AVO office leases are both on that list (I didn't see YVO or CVO when I skimmed it?). HVO is the oldest volcano observatory in the world and monitors the most persistently active volcanoes in the US. AVO monitors very high-risk volcanoes that can esp impact int'l air travel.
something could occur NE from Santorini... current seismogram picture
February 14, 2025 at 7:14 PM
something could occur NE from Santorini... current seismogram picture
Reposted by Szabolcs Harangi
Hi Seismo-Bluesky! I decided to test a pipeline with SeisBench, PyOcto, NonLinLoc, and HypoDD on the Santorini sequence. The level of activity (>4,500 events) is truly stunning! There are repeated bursts migrating backwards and forwards, spreading outwards from a narrow, almost linear channel.
February 10, 2025 at 1:23 PM
Hi Seismo-Bluesky! I decided to test a pipeline with SeisBench, PyOcto, NonLinLoc, and HypoDD on the Santorini sequence. The level of activity (>4,500 events) is truly stunning! There are repeated bursts migrating backwards and forwards, spreading outwards from a narrow, almost linear channel.
Reposted by Szabolcs Harangi
Our (Icelandic Met Office) latest news on the Reykjanes Peninsula. Magma accumulation beneath Svartsengi continues. We are expecting a new eruption in Sundhnúks crater row.
en.vedur.is/about-imo/ne...
en.vedur.is/about-imo/ne...
The
period of increased risk of a volcanic eruption at Sundhnúkur may last for several weeks | News | Icelandic Meteorological office
en.vedur.is
February 9, 2025 at 10:50 AM
Our (Icelandic Met Office) latest news on the Reykjanes Peninsula. Magma accumulation beneath Svartsengi continues. We are expecting a new eruption in Sundhnúks crater row.
en.vedur.is/about-imo/ne...
en.vedur.is/about-imo/ne...
Reposted by Szabolcs Harangi
Sentinel-1 dInSAR data we processed over Santorini area for the period 24 January 2025 - 05 February 2025. Fringes are mostly due to atmospheric disturbance. For the past 2 weeks, there is no major volcanic deformation visible in data.
February 6, 2025 at 7:52 PM
Sentinel-1 dInSAR data we processed over Santorini area for the period 24 January 2025 - 05 February 2025. Fringes are mostly due to atmospheric disturbance. For the past 2 weeks, there is no major volcanic deformation visible in data.
Reposted by Szabolcs Harangi
I made a quick map of historical seismicity for the region of today’s M7.6 #earthquake near the Cayman Islands. This left lateral strike slip event occurred on a fault system that produced a few similar events in size & mechanism in the last decade.
(Good to see that USGS NEIC is still online!)🧪⚒️
(Good to see that USGS NEIC is still online!)🧪⚒️
February 9, 2025 at 8:31 AM
I made a quick map of historical seismicity for the region of today’s M7.6 #earthquake near the Cayman Islands. This left lateral strike slip event occurred on a fault system that produced a few similar events in size & mechanism in the last decade.
(Good to see that USGS NEIC is still online!)🧪⚒️
(Good to see that USGS NEIC is still online!)🧪⚒️
Reposted by Szabolcs Harangi
Kudos to @lisgallant.bsky.social for flagging that the illegal USAID shutdown paying out right now may imperil the 39 year-old Volcano Disaster Assistance Program (VDAP).
For folks who don't know VDAP, it's a transformative and vital resource for volcano hazard mitgation across the world. 🧵
For folks who don't know VDAP, it's a transformative and vital resource for volcano hazard mitgation across the world. 🧵
February 7, 2025 at 4:15 PM
Kudos to @lisgallant.bsky.social for flagging that the illegal USAID shutdown paying out right now may imperil the 39 year-old Volcano Disaster Assistance Program (VDAP).
For folks who don't know VDAP, it's a transformative and vital resource for volcano hazard mitgation across the world. 🧵
For folks who don't know VDAP, it's a transformative and vital resource for volcano hazard mitgation across the world. 🧵