The @rottnrock.bsky.social team have had a successful week and a bit in Nisyros, Greece, one of our education sites for multi-method research!

Checking out the main field sites in Nisyros, as part of the latest @rottnrock.bsky.social field trip! We’re here to do multidisciplinary science to look at how hydrothermal alteration influences the volcanic landscape and its hazards

The @rottnrock.bsky.social team waiting for the ferry to Nisyros to begin the next fold campaign! @trwalter.bsky.social

🚨🌋 New paper on hydrothermal alteration & permeability at La Soufrière de Guadeloupe! 🔗 doi.org/10.1016/j.jv... 📊 More altered rocks show higher average permeability 🔬 But microstructures reveal alteration reduces permeability ⚠️ Small datasets can be misleading @rocklabstrasbourg.bsky.social

Now installed as editor-in-chief of Journal of Volcanology and Geothermal Research 🌋 Will start handling manuscripts at the start of next year! www.sciencedirect.com/journal/jour...

🌋Phreatic eruptions at Whakaari volcano are influenced by subsurface pressurisation magnitudes and timescales, which in turn are significantly influenced by hydrothermal mineralisation and magmatic gas input rates. 👉Read more here: www.nature.com/articles/s43...

Phreatic eruptions at Whakaari Volcano driven by hydrothermal mineralisation and magmatic gas input - Communications Earth & Environment

Phreatic eruptions at Whakaari volcano are influenced by subsurface pressurisation magnitudes and timescales, which are significantly influenced by hydrothermal mineralisation and magmatic gas input rates, according to 3-dimensional numerical modelling of volcanic hydrothermal systems.

nature.com

ROTTnROCK PI @claireharnett.bsky.social wins an Arne Richter Award for Outstanding Early Career Scientists! Congratulations Claire! 🥳 She’ll be presented with the award at @egu.eu next year! @egu-gmpv.bsky.social

Rock Lab Strasbourg@rocklabstrasbourg.bsky.social · 9mo ago

Big congrats to @claireharnett.bsky.social, who won the 2026 @egu.eu Arne Richter Award for Outstanding Early Career Scientists! 🥳🏅 Here's some photos of Claire recommended by my phone... www.egu.eu/news/1551/eg...

ROTTnROCK postdocs Matías and Ariane exploring how hydrothermal alteration shapes volcanic hazards in Dominica 🇩🇲 🌋 @arianeloisel.bsky.social

The ROTTnROCK team mapping hydrothermal alteration at Sulphur Springs in Dominica using a lidar drone! 🌋 @trwalter.bsky.social

The ROTTnROCK team investigate Boiling Lake in Dominica! 🇩🇲 🌋 @trwalter.bsky.social @magmatroll.bsky.social @arianeloisel.bsky.social

Some of the ROTTnROCK team are currently in Dominica 🇩🇲 🌋 looking at, well, hydrothermal alteration of course! @magmatroll.bsky.social @trwalter.bsky.social @arianeloisel.bsky.social

New paper out in Solid Earth, led by Sam Thiele: "Hyperspectral mapping of density, porosity, stiffness, and strength in hydrothermally altered volcanic rocks" 🥳 @rottnrock.bsky.social It's #OpenAccess! 👇 se.copernicus.org/articles/16/...

Hyperspectral mapping of density, porosity, stiffness, and strength in hydrothermally altered volcanic rocks

Abstract. Heterogeneous structures and diverse volcanic, hydrothermal, and geomorphological processes hinder characterisation of the mechanical properties of volcanic rock masses. Laboratory experimen...

se.copernicus.org

Nice couple of days at Teide volcano summit 🌋 to understand hydrothermal alteration and associated risks with @magmatroll.bsky.social (Uppsala Univ) and @rottnrock.bsky.social ERC synergy grant cc @ipna.csic.es @csic.es

Samples of hyaloclastite from Krafla in Iceland 🇮🇸 🌋 These samples are from different depths within the shallow reservoir, and they’re now ready for some physical and mechanical probing in the laboratory!

Come join us!

Rock Lab Strasbourg@rocklabstrasbourg.bsky.social · 10mo ago

I'm hiring a new post-doc to work on the @rottnrock.bsky.social project! Come help us understand hydrothermal alteration and volcanic hazards! Advert here: www.unistra.fr/universite/t... 📸 Recent ROTTnROCK trip to Mombacho, Nicaragua 🌋

Part of our international team of volcanologists working with @rottnrock.bsky.social! From England, Indonesia, and Chile! 🇬🇧 🇮🇩 🇨🇱 Interesting fact: we all like cats! 🐈

Early morning start for our @rottnrock.bsky.social trip to Anak Krakatau from Anyer 🌋 Our luxury speed boats await! 🛥️ 1/9

At Galunggung in Indonesia 🇮🇩 🌋 the @rottnrock.bsky.social team were investigating the impressive recent collapse within the crater - we found plenty of altered rocks in the blocky deposit!

The @rottnrock.bsky.social team were at Galunggung today, a volcano famous after a British Airways flight accidentally flew through the huge eruption plume of the 1982 eruption! We’ll go back tomorrow to investigate, collect rocks, and drone the volcano 🌋

A two part feature! Lectures and scientific discussions today at the Fakultas Teknik Geologi at Universitas Padjadjaran and the Politeknik Geologi & Pertambangan AGP! 🌋 @magmatroll.bsky.social

The @rottnrock.bsky.social team are in Indonesia! 🇮🇩 🌋 we’re here, obviously, to look at the altered volcanoes! 👀 first stop, Tangkuban Perahu in Bandung!

Plenty of altered lapilli tuffs on Cracked Mountain! 🌋🇨🇦

Rock Lab Strasbourg@rocklabstrasbourg.bsky.social · 12mo ago

🌋🧵 Cracked Mountain is a basaltic subglacial volcano (i.e. tuya) situated in southwest British Columbia, Canada 🇨🇦 1/12

@rottnrock.bsky.social PI @claireharnett.bsky.social receiving the George Walker award! 🥳 @iavcei.bsky.social

Rock Lab Strasbourg@rocklabstrasbourg.bsky.social · last yr.

Flash-back to a few weeks ago when @claireharnett.bsky.social won the @iavcei.bsky.social George Walker Award! 🥇 Congrats again Claire! @farquharson.bsky.social, @alteringrocks.bsky.social, @magmatroll.bsky.social

Altered lapilli tuffs! 😍

Rock Lab Strasbourg@rocklabstrasbourg.bsky.social · last yr.

Volcano thread! 🌋🧵 On the Drake Passage, between the tip of South America and the South Shetland Islands of Antarctica, there is a small island. The island is the caldera of an active volcano, eerily called Deception Island on account of its "outward deceptive appearance as a normal island" 🌋 1/6

Keen to know about hydrothermal sealing and phreatic explosions! Check out our pre-print, led by Sophie Pearson-Grant! 🌋👇 Lots of cool insight from Sophie’s 3D models! www.researchsquare.com/article/rs-6...

Collection of great talks about phreatic explosions and hydrothermal sealing! 🌋 John Stix, Maarten de Moor, Emily Mick, Geoff Kilgour, Jessica Salas Navarro…

If you’re interested in hydrothermal sealing and explosions, check out my #IAVCEI25 @iavcei.bsky.social poster today! Number 29! 🌋

Bubbling mud pools at Hverir/Námafjall in Iceland 🇮🇸 Blubb blubb

Cristobalite and diktytaxitic textures are common in lavas. Do they influence rock properties? We try to answer this question by measuring rocks from submarine volcano Havre 🌋 With @smitchellscience.bsky.social, Rebecca Carey, @alteringrocks.bsky.social It's open access 👇 doi.org/10.1016/j.jv...

ROTTnROCK PI @claireharnett.bsky.social wins the @iavcei.bsky.social George Walker Award! 🥇 Congratulations! 🥳

IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · last yr.

IAVCEI Awards 2025 – George Walker Award We are delighted to award the George Walker Award for 2025 to Dr. Claire Harnett @claireharnett.bsky.social . Dr. Harnett is recognized for her innovative research and significant contributions to the understanding of volcanic hazards and processes.