Francesco Rappisi

Earthquake frequency-magnitude distribution at Mount Etna sheds light on magma ascent in the volcano’s plumbing system Earthquake frequency-magnitude distribution tracks magma ascent from the deep crust to the surface.

Earthquakes at #MountEtna reveal magma ascent from deep to shallow crust. 🌋
Temporal variations in #bvalue track magma movement through the volcano’s plumbing system.

Read our new study in #ScienceAdvances ⬇️

www.science.org/doi/10.1126/...

#Volcanology #Seismology #EarthScience #ingv @science.org

Advancing our understanding of these hidden processes is essential for improving seismic and tsunami hazard assessment—especially in regions that are otherwise difficult to study directly.

Understanding these systems is critical. For such reason I’m working on a project aiming to monitor subduction slip behavior using remote seismological techniques. By analyzing teleseismic signals, we investigate subtle precursory phases and slow slip phenomena.

A strong #earthquake struck the #Kamchatka Peninsula the night of July 29–30, triggering a #tsunami warning in Pacific.
Events like this highlight the seismic threat posed by offshore #subductionzones and their potential for global-scale impact (in terms of human lives and economic consequences)

In the Northern Hemisphere people talk about #climatechange only from June to September.

Ever wondered how #seismic #anisotropy unveils the hidden dynamics of the #Mediterranean? 🌍

Discover our brand-new anisotropic #tomography — bringing fresh insights into crustal structures and mantle flow.

👉 doi.org/10.1029/2024...

⬇️ More related papers from our team in the comments!

It involved the @universityofleeds.bsky.social, Università degli Studi di Padova, İstanbul Teknik Üniversitesi, @ingvterremoti.bsky.social and the European Center for Geodynamics and Seismology

It has been conducted in collaboration with @rosalialobue.bsky.social, Brandon VanderBeek, Manuele Faccenda, Judith Confal, Seda Yolsal-Çevikbilen, Tuna Eken, Ceyhun Erman, Paola Baccheschi and Silvia Pondrelli.

The new anisotropic 3D tomography model provides:

🟢 An updated view of major slabs (Alboran, Apennines, Alps, Dinarides, Carpathians, Hellenic)
🟢 Clear imaging of slab windows and back-arc basin dynamics
🟢 Detailed anisotropic patterns tracing mantle flow and tectonic evolution

Ani-MR25: the Mediterranean in 3-D 🫵

A new reference for those working on geodynamics, subduction processes, and upper mantle structure.

🎥 Below: dynamic 3D visualizations of the slab models (Alps -> Apennines -> Alboran -> Hellenic -> Carpathians in one movie!)
👉 doi.org/10.1029/2024...

Both works represent important steps forward, each shedding light on different facets of the volcano’s internal workings. And there's more to come: other studies are currently in preparation.

#geoscience #seismology #research #EarthScience #scienceupdate

📍 The second study, led by PhD student Gianmarco Del Piccolo, identifies a pressurized magma storage system within a radial dike network located between 6 and 16 km depth—a configuration that could play a key role in Etna’s eruptive behavior.
Go and have a look: lnkd.in/dxp3kThZ

Anisotropy helps trace geological features and offer new insight into how tectonic deformation and volcanic processes interact in this complex setting.

Go and have a look: lnkd.in/dRakqpQi

📍 The first study, led by Dr @rosalialobue.bsky.social , presents the first-ever P-wave anisotropic tomography based on local earthquakes recorded around Etna.
It provides high-resolution 3D images of both isotropic and anisotropic seismic structures beneath the #volcano.

#Etna is speaking loudly today
Its activity intensified, producing an impressive plume, accompanied by pyroclastic flows and, later, sustained lava fountains.
This episode comes just as two recent scientific studies offer fresh perspectives on Etna’s internal structure and dynamics.

🔴 L' #Etna ha generato un flusso piroclastico dal Cratere di Sud-Est, senza superare la Valle del Leone.
In corso fontana di lava, tremore e attività infrasonica molto elevati.
Nessuna deformazione significativa rilevata.

(segui t.me/BlueDotNews)

#eruzione #Sicilia #allerta

What I wish I knew: 33 thoughts for early career researchers Thirty three reflections I wish someone had shared with me early in my research career.

What I wish I knew: 33 thoughts for early career researchers
Reflections I wish someone had shared with me early in my research career.

predirections.substack.com/p/what-i-wis...

😤

Portrait of Marie Curie by unknown author, c.1900. Marie is sitting in a chair, with her left arm resting on one armrest and the other in her lap. She is wearing a dark dress from that era. Via Wikimedia Commons: https://commons.wikimedia.org/wiki/File:M._Curie_1900.jpg

"You cannot hope to build a better world without improving the individuals. To that end, each of us must work for his own improvement and, at the same time, share a general responsibility for all humanity..."

― Marie Curie

Image in the public domain, circa 1900, by unknown author

🧪 ⚛️ #histsci

A few scenes of the new Strombolian activity at #Etna 's Southeast Crater during the night of 15-16 March 2025, seen from 5 km distance. Looks big, but actually this is a rather modest activity for Etna standards.

Artificial age-independent seismic anisotropy, slab thickening and shallowing due to limited resolving power of (an)isotropic tomography SUMMARY. Seismic anisotropy is key to constrain mantle flow, but it is challenging to image and interpret it. Existing large-scale tomography models of sei

I’m a big fan of @specfem.org
I used it in our 2024 GJI study to generate a waveform dataset for testing a tomographic method and assessing distortions in slab recovery. The geodynamic model and seismic dataset will be publicly available soon for benchmarking!

#Seismology

doi.org/10.1093/gji/...

Screenshot from USGS livestream in Kilauea’s crater. Glowing orange lava erupting vertically and also flowing on surface toward the left

Kilauea started fountaining again in the last hour.

www.youtube.com/live/oG5zz9S...

You had it coming, mommy 🍦

Ocean Bottom Geophysics: Progress and Perspectives RAS Meetings | Friday, 14 of March 2025 - 10:30 | Ocean Bottom Geophysics: Progress and Perspectives

Your last chance to register for our Ocean Bottom Geophysics meeting on Friday at the Royal Astronomical Society, London. We have an exciting lineup of presentations. You can also join our meeting online.
Tickets only £17 for in-person attendance and £6 online - a bargain!
ras.ac.uk/events-and-m...

Today's view of Etna volcano in Sicily.

Image taken by Sentinel-2.

A High‐Resolution 3‐D P‐Wave Velocity Structure of the South‐Central Cascadia Subduction Zone From Wide‐Angle Shore‐Crossing Seismic Refraction Data The transition between various onshore accreted terranes is associated with significant crustal velocity changes The deformation zone between the Juan de Fuca and Gorda plates in the subducting s...

Initial results from the Cascadia2021 experiment (cascadia2020.uoregon.edu) is out at JGR: Solid Earth. This paper shows a 3-D shore-crossing velocity model of the south-central Cascadia subduction zone at unprecedented high-resolutions. Link: doi.org/10.1029/2024...

New platform, same passion! 🌋 Just landed on Bluesky and it's time to repopulate my feed—starting with some 'vintage' research! Throwback to our 2024 paper on anisotropic #seismictomography of #EtnaVolcano, unraveling its complex dynamics. Still a hot topic!🔥

#AguPubs #GRL

doi.org/10.1029/2024...

5 March 1823 16:37 UT
Mw5.8 earthquake and tsunami hit the northern coast of Sicily (Italy), already affected in 1818 and 1819, causing the death of 22 people, 19 of them in Palermo. Felt in the entire island.
emidius.mi.ingv.it/ASMI/event/1...
chroniclingamerica.loc.gov
gallica.bnf.fr

Is this the level we’re at? 🤌

In this case, I think it is. Of principles and values.