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PARK Jinheum @jinheum.bsky.social · 10/08/2026

Great article in Ars Technica by Jacek Krywko about our recent publication. Many thanks!

Reposted by PARK Jinheum

Cambridge Tephra Lab @camtephra.bsky.social · 04/08/2026

Find out how @jinheum.bsky.social, @chslane.bsky.social & colleagues carried out a forensic study of varve sediments from Lake Chala to constrain the season and climatic impact of the 74,000 yr Toba super-eruption 🌋🔬🌏 doi.org/10.1126/scia... [spoiler: it was within background climate variability]

A three panel figure:
1. Simple rectangualr map of Africa, Southern Asia, the Indian Ocean area and across to W Australia. The location of the Toba caldera in Sumatra is indicated, as well as the locations that ash has been found. These are mainly across the E Indian Ocean, peninsula India and a few dots for cryptographers discoveries in E and S Africa.
2. A photo of the surface of a sediment core, spanning 10-20 cm, revealing laminations in dark-light layers. The position of ash from the Toba eruption is indicated in the centre of the image.
3. A close up image taken under high powered microscopy of an ~500 um diameter view of the sediment core, centred on the Toba ash layer (particles appear irregularly shaped and white, arranged in a clear horizontal band). Algal remains are also seen, picking out seasonal layers.

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PARK Jinheum @jinheum.bsky.social · 31/07/2026

We reveal, at sub-annual resolution, the ~74 ka Toba super-eruption‘s acute, but short-lived impact on eastern African climate using varved sediments in Lake Chala (Kenya/Tanzania)! www.science.org/doi/10.1126/...

science.org

Sub-annual resolution evidence for limited impact of the 74-ka Toba eruption on eastern African climate

Sub-annually resolved lake sediments suggest the Toba eruption caused modest cooling and drought in eastern Africa.

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Reposted by PARK Jinheum

Danielle McLean @danmclean.bsky.social · 18/06/2026

Need some motivation finishing up your #tephra paper this summer? 🌋📄 The deadline for submissions for the JQS Tephra Special issue has been extended until September. See more information here… onlinelibrary.wiley.com/page/journal... @cot-iavcei.bsky.social

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Reposted by PARK Jinheum

Christine S. Lane @chslane.bsky.social · 24/06/2025

Last Tues we were celebrating @jinheum.bsky.social’s PhD viva 🥳 Many thanks to examiners @harrietallengeog.bsky.social @simon-blockley.bsky.social for your wisdom & support. Jinheum also had a paper out [doi.org/10.1002/jqs.3730] & starts a postdoc in 2 weeks. Congratulations Jinheum!

Three adults in a colourful restaurant smiling for the camera in a row. They look proud and relaxed.

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PARK Jinheum @jinheum.bsky.social · 14/11/2024

It was great to visit Oxford to speak at the seminar in School of Archaeology on Tuesday!

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PARK Jinheum @jinheum.bsky.social · 14/09/2024

Had a good time in Sicily last week giving a talk + having a day trip to Etna! (thanks to photographers)

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Reposted by PARK Jinheum

Cambridge Tephra Lab @camtephra.bsky.social · 11/09/2024

Documenting this day so we can attribute all the Mt Etna tephra we are about to find in our cryptotephra lab to the correct isochron 🫣🌋🤔🕵🏻‍♀️ #tephratastic #toomuchtephra ⚒️

6 people in outdoor gear stood on ashy ground with a mountain/volcano in the background. It’s cloudy, but clear from shorts and sone bare arms that it is still quite warm.

The same 6 people, this time with a view below into the cones and lava flows on the volcanoes slopes. You can just make out the sea in a bay in the distance.

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Reposted by PARK Jinheum

Cambridge Tephra Lab @camtephra.bsky.social · 09/09/2024

Members of the Cambridge Tephra Lab (past and present) are at the Commission of Tephrochronology meeting, Catania - COT24, this week.

8 humans stood smiling in front of a wall built into a lava flow.

Another present giving a talk in a large auditorium.

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PARK Jinheum @jinheum.bsky.social · 14/08/2024

A beautiful lake in Lahti, Finland

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Reposted by PARK Jinheum

Cambridge Tephra Lab @camtephra.bsky.social · 18/04/2024

@jinheum.bsky.social giving his talk on the climatic impact of the Toba YTT at #EGU24 #INTIMATE 🌋☁️

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Reposted by PARK Jinheum

Christine S. Lane @chslane.bsky.social · 16/04/2024

Enjoying news from #EGU24. A tad sad not to be in the Cambridge contingent, but cheering them on from home. Check out @jinheum.bsky.social (CL1.2.10 Thurs) on Toba impacts, @yqnatdeng.bsky.social (CL1.2.1, Wed) on lake ecosystem responses to SH westerlies. And… www.geog.cam.ac.uk/events/egu20...

geog.cam.ac.uk

Department of Geography, Cambridge » Cambridge Geographers at EGU 2024

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PARK Jinheum @jinheum.bsky.social · 12/03/2024

In Oxford attending ”The Impact of Volcanic Eruptions on the Environment: Observations and Insights” conference

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