Tag: Climate change and permafrost
Microbial methane release identified in inner Laptev Sea subsea permafrost
Triple-isotopic analysis reveals old microbial methane from subsea permafrost drives methane release in the inner Laptev Sea, contrasting with thermogenic sources elsewhere on the Arctic shelf.
EICP improved freeze-thaw resistance of Yili loess
EICP biomimetic mineralization strengthens Yili loess under freeze-thaw conditions, increasing compressive strength 1.5-fold and restricting moisture migration in cold regions.
Ice- and peat-rich permafrost degraded gradually on Eboling Ridge
Organic-rich permafrost on China’s Qilian Eboling Ridge degrades slowly due to ice-carbon coupling that provides thermal insulation, reducing climate sensitivity compared to mineral-dominated regions.
Arctic motion picture labs need modular, energy-saving design
Architectural design criteria for motion picture laboratories in Arctic regions, integrating modular construction, zoning, and energy-efficient technologies for harsh climates.
Freeze–thaw cycling changes concrete–soil interface shear behavior
Study investigates interfacial shear behavior between concrete and crushed rock-soil under freeze-thaw cycling, developing an improved constitutive model for permafrost infrastructure durability.
Old dissolved carbon from permafrost thaw accumulates in Siberian lakes
Study reveals that up to 75% of dissolved organic carbon in Siberian thermokarst lakes originates from permafrost thaw, yet this ancient carbon accumulates rather than rapidly converting to.
Warming scenario increases rain-on-snow events in Gallatin watershed
SnowModel simulations project increased rain-on-snow events in the upper Gallatin River watershed, with significant hydrologic implications for streamflow and aquatic ecosystems under future.
Sediment biomarkers indicate enhanced methane cycling across the Laptev Sea
Biomarker analysis reveals enhanced methane cycling across the Laptev Sea shelf overlying thawing subsea permafrost, using C30 hopanoid isotopic signatures as time-integrated proxies for aerobic.
