#environmentalrisk — Public Fediverse posts

FORESTRY SLASH RISKS PERSIST POST-GABRIELLE AMID REGULATORY SHIFTS

New forestry rules after Cyclone Gabrielle are questioned for not stopping slash risks on steep land. Who is affected and what happens next?

#ForestrySlash, #CycloneGabrielle, #EnvironmentalRisk, #NewZealand, #LandUse

https://newsletter.tf/forestry-slash-risks-after-gabrielle-new-rules/

New forestry regulations are being questioned for their effectiveness in managing debris after Cyclone Gabrielle, with concerns that large-scale clear-felling on vulnerable slopes may continue.

#ForestrySlash, #CycloneGabrielle, #EnvironmentalRisk, #NewZealand, #LandUse
https://newsletter.tf/forestry-slash-risks-after-gabrielle-new-rules/

Thousands of studies describe Rayleigh–Taylor instability, and most hydrogeological models acknowledge its importance in contaminant transport.

However, in studies of the Svystunova gully mine-water storage pond, I have not seen density explicitly accounted for — despite highly mineralized waters where this factor can fundamentally change plume behaviour.
By calculating solution density within the contamination halo, I demonstrated a real risk of gravity-driven sinking of the contamination plume to the base of the aquifer. This finding adds a critical dimension to impact assessment and is now documented as a standalone section in my ongoing report.

If you work with mine water, aquifers contamination, or long-term contamination modelling, this is a parameter worth revisiting.

#Hydrogeochemistry #Groundwater #MineWater #PHREEQC #RStats #QGIS #EnvironmentalRisk #Contamination #RiskAnalysis #SvystunovaGully

🌊 Modeling a potential dam breach — and how panic spread beyond the real watershed

This project assessed the potential consequences of a dam failure at a mine-water impoundment in the Svystunova Gully.

🔹 Reconstructed the original pre-impoundment terrain from archival topographic maps.
🔹 Used Sentinel-based land-cover classification to assign variable Manning’s roughness coefficients.
🔹 Built a modern DEM including the dam structure and current flooded zone.
🔹 Simulated dam-break flood dynamics in GRASS GIS — frame by frame.
🔹 Produced a video visualization to help local communities understand real risks (and ignore fake ones).
🔹 The results were later featured in regional media and used in discussions about mine-water safety.

🎥 Watch the short video visualization:
🔗 https://youtu.be/JTcCLXqvWlE?si=NS7ly7UAZu1XttWy

#Hydrology #DamSafety #GIS #GRASSGIS #MineWater #HydrodynamicModeling #GeospatialAnalysis #EnvironmentalRisk #OpenScience #IndependentResearch #SvystunovaGully

Tajikistan’s Rogun Dam to Triple Forests Under No Net Loss Plan

https://web.brid.gy/r/https://timesca.com/tajikistans-rogun-dam-to-triple-forests-under-no-net-loss-plan/