Lightnews — Scholar-powered news

Reposted by Nemi Walding

Isobel Yeo @isobelyeo.bsky.social · 20d

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...

Volcanic and Magmatic Studies Group | NOC Events

noc-events.co.uk

1 7

Reposted by Nemi Walding

IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · 29d

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...

1 3 4

Nemi Walding @nemiwalding.bsky.social · Jul 17

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

7

Nemi Walding @nemiwalding.bsky.social · Jul 8

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🌋

1 6

Reposted by Nemi Walding

Dr Rebecca Williams @volcanologist.bsky.social · Jul 4

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

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

6 16

Reposted by Nemi Walding

Dr Rebecca Williams @volcanologist.bsky.social · Jul 4

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

Selfie of a woman stood in front of a conference poster

1 8 38

Reposted by Nemi Walding

Dr Rebecca Williams @volcanologist.bsky.social · Jul 4

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 screen shot is a list of times, talks and names

1 1 6

Reposted by Nemi Walding

Isobel Yeo @isobelyeo.bsky.social · Jul 1

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.

3 9

Reposted by Nemi Walding

Alex Spahn 🌋🌪️☄️ @spahn711.bsky.social · Jun 30

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)

310 840 6.4K

Reposted by Nemi Walding

Dr Rebecca Williams @volcanologist.bsky.social · Jul 1

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

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

3 8 62

Reposted by Nemi Walding

Girls into Geoscience (GiG) @girlsingeosci.bsky.social · Jun 30

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

1 5

Reposted by Nemi Walding

IAVCEI Commission on Volcanic Sediments @comvolcseds.bsky.social · Jun 30

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

3 5

Reposted by Nemi Walding

IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · Jun 29

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

1 7 23

Reposted by Nemi Walding

IAVCEI - International Association of Volcanology and Chemistry @iavcei.bsky.social · Jun 7

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

(4/5)

1 1 1

Reposted by Nemi Walding

Girls into Geoscience (GiG) @girlsingeosci.bsky.social · Jun 9

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)

1 1 4

Nemi Walding @nemiwalding.bsky.social · May 28

Look at her! ❤️🌋

1 14

Nemi Walding @nemiwalding.bsky.social · May 28

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 🌋

8

Nemi Walding @nemiwalding.bsky.social · May 20

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...

Behaviours of pyroclastic and analogue materials, in dry and wet environments, for use in experimental modelling of pyroclastic density currents | Volcanica

doi.org

2 5

Nemi Walding @nemiwalding.bsky.social · May 20

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!

1 3

Reposted by Nemi Walding

Pete Rowley @pyroclasticpete.bsky.social · May 6

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.

Nemi Walding @nemiwalding.bsky.social · May 6

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

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...

link.springer.com

2 9

Nemi Walding @nemiwalding.bsky.social · May 6

@lokier.bsky.social

2

Nemi Walding @nemiwalding.bsky.social · May 6

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

1 6

Nemi Walding @nemiwalding.bsky.social · May 6

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/)

1 2 15

Nemi Walding @nemiwalding.bsky.social · May 6

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/)

1 1 6

Nemi Walding @nemiwalding.bsky.social · May 6

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/)

1 1 6