Nemi Walding

The Volcanic and Magmatic Studies Group (VMSG) Annual Meeting will be hosted by NOC and the University of Southampton, at our waterfront campus 5th - 7th January 2026.

REGISTRATION IS NOW OPEN! Please see the meeting website for details and to register here:

noc-events.co.uk/VMSG-volcani...

Our webinars are back! 🌋

Join us on the 19th September 2025 at 2pm where Duje Smirčić will give their talk on the “Middle Triassic volcanic activity and related products in the External Dinarides”

Join here: events.teams.microsoft.com/event/9d01a0...

Very grateful, very happy. I’m a Dr! 🌋

Had the pleasure of presenting at GiG 2025 today! What a lovely little full circle moment - heading back to my undergraduate university to give a talk.

Thanks for organising @girlsingeosci.bsky.social and well done to all the other women who did awesome talks and workshops!

Very inspiring stuff🌋

Photograph of a man standing in front of an academic conference poster

What happens when a dense, aerated granular flow encounters a vertical barrier? What night these mean for the behaviours of pyroclastic density currents? Check out Jordan Chenery's poster at #IAVCEI2025

Selfie of a woman stood in front of a conference poster

We tried compiling a global database of deposit descriptions of pyroclastic density current deposits. The aim was to help us do big data analysis, look for common trends, and to support modelling.

We got some interesting results but also, found some really significant issues and gaps #IAVCEI2025

A screen shot is a list of times, talks and names

At #IAVCEI2025 it's the best session of the week. 3.9 Multidisciplinary Advances in Understanding Pyroclastic Density Currents. Convened by @pdcguy.bsky.social, Sylvain Charbonnier, @nemiwalding.bsky.social (online) and me!

Come to room 380, enjoy the air conditioning and awesome PDC science.

A really great end to this lahars focussed mini session at @iavcei.bsky.social by @mikeaclare.bsky.social from @noc.ac.uk presenting work on lahars offshore and their huge sediment loads funded by the Sustainable Blue Economies Program.

Playing around with a close-up B&W edit of the best footage I have ever captured on this Earth. Hoping compression doesn't prevent y'all from seeing the incredible rain of debris.

Volcán de Fuego, Guatemala (March 2023)

Selfie photo of a woman standing in front of a conference poster

Come and see my poster today at #IAVCEI2025 if you love field volcanology and pyroclastic density currents

Girls into Geoscience 2025 is just around the corner! We've got inspiring talks, hands-on workshops, and exciting field experiences lined up - all designed to show you what a future in geoscience could look like. 🌋 Link in our bio for more information #GiG25

IAVCEI 2025! 🌋

Join us in person and online at the IAVCEI Scientific Conference.

Session 3.5 Volcanic sedimentology and geomorphology: Understanding surface and subsurface processes in driving volcanic landscape evolution and hazards
Room 280, Tuesday, Plus 32 posters from 16.30-18.30

Welcome to Geneva! 🇨🇭
We’re thrilled to have you at #IAVCEI2025!

📍 We would like to remind you that all event info and schedule can be found here 👉 e5k.github.io/IAVCEI-SA2025/

📸 Don’t forget to share your moments with us with tag #IAVCEI2025!

We hope you enjoy the week

🌋 #IAVCEI Conference and Workshops Highlights
1⃣ CVS goes to Hungary
2⃣ the ECR-Network Scavenger Hunt
3⃣ COV13 postponement

(4/5)

Dr. Nemi Walding @nemiwalding.bsky.social is a post-doctoral research fellow at Kelpie Geoscience Ltd in Edinburgh. Her research integrates high-resolution topographic models with photography and video analysis to investigate submarine volcano geomorphology… (1/3)

Look at her! ❤️🌋

I had the pleasure of presenting at BGS Edinburgh today! I spoke about my PhD work as well as the postdoc work I’ve been doing. Thank you to those that attended and the invitation to present 🌋

NEW PAPER! 🌋
In this manuscript we have compared a range of natural and analogue materials, in wet and dry environments, to inform material used in analogue modelling. Particularly we explore the use of material for pyroclastic density current modelling.
Read here:
doi.org/10.30909/vol...

I had the pleasure of attending the GeoHab 2025 conference in Key West.

It was an amazing conference to be introduced into the wonderful diversity and science of geology/biology/habitat interactions.

Thanks to the amazing organisers and presenters who made it epic!

Delighted that this paper has hit p[ublication. Nemi did a truly amazing job on all of this, and together with 3 other papers (1 published 2023, the others winging their way to print soon) has really moved forward our understanding of moisture in pyroclastic sediments.

@lokier.bsky.social

This was such a fun paper to work on – thanks to everyone involved! The fieldwork was supported by the British Sedimentological Research Group (Gillian Harwood Fund) #BSRG

@volcanologist.bsky.social @drnatashadowey.bsky.social @pyroclasticpete.bsky.social @bedforms.bsky.social

This suggests that “wet” ash layers are more likely to be preserved in ignimbrite successions than dry ones. This has important implications for flow unit interpretations and, therefore, assessments of eruption frequency.

This was such a fun paper to work on – thanks to everyone involved! (4/)

We identified different behaviours of these ash layers associated with their apparent moisture contents. In low (1 wt.%) and high (>15 wt.%) moisture conditions, yield strength increases, and we even see evidence of shear thickening! (3/)

Here we completed field work in Tenerife, looking at ash layers and evidence of moisture (by the presence of ash aggregates). This was then followed up by a suite of experimental studies completed at the University of Leeds and University of Hull to explore the behaviours seen.(2/)

The influence of moisture on ash strength: implications for understanding volcanic stratigraphy - Bulletin of Volcanology Ash layers within extensive pyroclastic density current (PDC) deposits can be important in understanding the evolution of explosive eruptions. If interpreted as ashfall deposits, they may be used to i...

NEW PAPER!
Happy to say my 3rd results chapter from my PhD has been published! link.springer.com/article/10.1...
(1/)

We now have a website! Check here: kelpiegeoscience.com to find out about what we do!

The influence of moisture on ash strength: implications for understanding volcanic stratigraphy - Bulletin of Volcanology Ash layers within extensive pyroclastic density current (PDC) deposits can be important in understanding the evolution of explosive eruptions. If interpreted as ashfall deposits, they may be used to i...

It's new publication day! 🌋🎉

@nemiwalding.bsky.social has published the third paper from her PhD. Nemi looks at some incredible volcaniclastic stratigraphy in Tenerife and tries to understand it experimentally.

Check it out! link.springer.com/article/10.1...

I dunno who it was who wrote 25,000 words of a book, of which roughly a third are "CHECK THIS" or "FIND REFERENCE HERE", but when I find out I am going to murder them

A geologist holding up their phone to show the group of geologists a reconstruction palaeoenvironment video

Finally we rounded up our day in the “Grand Canyon” where we looked at a beautiful braided river sequence of volcanogenic conglomerates and sandstones!