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Samyak Pradhan

@samyakpradhan.bsky.social
10 followers 37 following 4 posts

PhD candidate in Geochemistry. Nature and outdoors enthusiast.

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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 17/09/2026
Happy to share a preprint led by @samyakpradhan.bsky.social on the importance of microbial sulfate reduction on terrestrial landscapes. Punchline: pyrite oxidation (and related CO2 release) estimates might be quite a bit off! www.researchsquare.com/article/rs-1...
researchsquare.com
Pyrite oxidation flux underestimated due to landscape-mediated microbial sulfate reduction
Oxidative weathering of pyrite consumes O2, generates dissolved sulfate (SO42−) and acidifies carbonates to release CO2 to the ocean-atmosphere system. Mountain belts are hotspots of chemical weatheri...
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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 26/07/2026
🚨PhD position alert!🚨 We're hiring a PhD to investigate isotope compositions of sulfur-bearing organic molecules to try to develop potential bio-signatures. Funded by NCCR Genesis and joint between Johanna Marin-Carbonne @unil.bsky.social and myself! career5.successfactors.eu/career?caree...
career5.successfactors.eu
Opportunités de carrière : Phd position on isotope characterization of sulfur-bearing organic compounds (22905)
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Samyak Pradhan @samyakpradhan.bsky.social · 11/07/2026
New paper in JGR:Solid Earth! We use hot springs to answer a seemingly simple question: How deep does water derived from the surface penetrate into the Himalayas? Tl, dr: it depends + fault type and deep volatile degassing matter agupubs.onlinelibrary.wiley.com/doi/10.1029/...
agupubs.onlinelibrary.wiley.com
Circulation Depths of Meteoric Water in the Himalayas: Controls and Implications for Seismicity
Meteoric water circulation is more prevalent along active fault zones, but its maximum depth is controlled by the fault's deformation style Variations in topography, orographic precipitation, and...
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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 16/06/2026
🚨paper alert!🚨 Thrilled to share our work, led by @climategordon.bsky.social, on terrestrial OC burial during the PETM, which was likely much higher then previously thought. Implications for C-cycle responses to hothouse climates! @natgeosci.nature.com www.nature.com/articles/s41...
nature.com
Enhanced marine burial of terrestrial organic carbon through the Palaeocene–Eocene Thermal Maximum - Nature Geoscience
The burial of terrestrially derived organic carbon in coastal marine sediments greatly increased during the Palaeocene–Eocene Thermal Maximum, probably helping to draw down a large portion of carbon r...
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Reposted by Samyak Pradhan
Nature @nature.com · 19/06/2026
Nature research paper: Rock weathering can counteract river CO2 emissions induced by permafrost thaw go.nature.com/4xIFqbC
go.nature.com
Rock weathering can counteract river CO2 emissions induced by permafrost thaw - Nature
Permafrost thaw on the Qinghai–Tibet Plateau increases rock-weathering rates while reducing river CO2 emissions, suggesting geological carbon fluxes may eventually outpace thaw-driven emissions.
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Samyak Pradhan @samyakpradhan.bsky.social · 06/05/2026
I will be presenting tomorrow some of our ideas around the landscape and hydrological drivers of terrestrial microbial sulfate reduction and how it affects pyrite oxidation quantification. If you are at @egu.eu do come around! Thursday, 7 May Room: -2.43 15:35-15:45 CEST Session ERE 4.5
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Reposted by Samyak Pradhan
Critical Zone News @cznews.bsky.social · 05/03/2026
Glacier retreat is reshaping water chemistry worldwide. By showing that melting ice can deliver both vital micronutrients and potential contaminants, this study highlights new challenges for managing fragile mountain and polar ecosystems under climate change. 🌐🧪
bit.ly
Glacier-specific controls on enhanced trace metal mobility across global mountain and polar meltwaters - Communications Earth & Environment
Meltwaters from mountain glaciers and ice sheets contain essential micronutrients like zinc, cobalt, nickel, cadmium, and copper, which can fertilize nutrient-limited ecosystems but also raise metal t...
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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 24/02/2026
🚨 Paper alert! 🚨 Happy to see this review out in @natureportfolio.nature.com Reviews Earth & Environ! We go through looming uncertainties related to wide-scale application of ERW. It will be a rocky path! @mschiedung.bsky.social @profbobhilton.bsky.social @eth-eaps.bsky.social @usyseth.bsky.social
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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 09/02/2026
Very excited to announce *TWO* fully-funded PhD positions starting this summer focusing on greenhouse gases in the peatlands of the Congo Basin! Both positions are joint between my group in @eth-eaps.bsky.social and that of @johansix.bsky.social @usyseth.bsky.social. Come join us!
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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 29/01/2026
🚨Paper alert!🚨 Very excited to finally see the thesis work of my ~first~ M.Sc. student published---and, to boot, it's in a special edition dedicated to the late, great Judy McKenzie! onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Hydrothermal dolomitisation of a deep‐water bioherm isolated in a non‐dolomitised intraplatform basin within the Norian Dolomia Principale (Southern Alps, northern Italy)
We propose that one of the largest known bioconstructions (the Monte Zenone bioherm) in the Southern Alps, northern Italy, and its growth on a tilted and drowned platform block of the Norian Dolomia ...
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Reposted by Samyak Pradhan
Jordon Hemingway @jordonhemingway.bsky.social · 12/12/2025
🚨 First #SEELab @eth-eaps.bsky.social PhD student-led paper is now officially online! We show that sedimentary conditions regulate formation rate and isotope composition of #pyrite, and that this process currently out-paces oxidation on land, leading to O2 accumulation www.nature.com/articles/s41...
nature.com
Sedimentary conditions drive modern pyrite burial flux to exceed oxidation - Nature Geoscience
Modern pyrite burial in seafloor sediments exceeds pyrite oxidation on land, indicating that the sulfur cycle is out of balance, and acts to increase atmospheric oxygen levels, according to a diagenet...
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Reposted by Samyak Pradhan
Nature Geoscience @natgeosci.nature.com · 12/12/2025
⚒️ Article: Modern pyrite burial in seafloor sediments exceeds pyrite oxidation on land, indicating the sulphur cycle is out of balance and acts to increase atmospheric oxygen levels www.nature.com/articles/s41...
nature.com
Sedimentary conditions drive modern pyrite burial flux to exceed oxidation - Nature Geoscience
Modern pyrite burial in seafloor sediments exceeds pyrite oxidation on land, indicating that the sulfur cycle is out of balance, and acts to increase atmospheric oxygen levels, according to a diagenet...
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Reposted by Samyak Pradhan
Sara Vicca @saravicca.bsky.social · 05/08/2025
📢New @globalchangebio.bsky.social #EnhancedWeathering alters soil organic carbon in complex ways. Effects are mediated by biota & soil moisture. Robust #CDR assessments require considering organic carbon. @boitolucilla.bsky.social @arthurvienne.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
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Samyak Pradhan @samyakpradhan.bsky.social · 18/03/2025
I am giving a talk on 'Tectonically controlled deep meteoric water circulation and CO2 degassing in the Himalayas' at @gfz.bsky.social on Wednesday at 13:00 in F409! It will be great to see you there if you are around!
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