Results 81 to 90 of about 277 (174)

Permafrost degradation and soil erosion as drivers of greenhouse gas emissions from tundra ponds

Environmental Research Letters
Climate change poses a serious threat to permafrost integrity, with expected warmer winters and increased precipitation, both raising permafrost temperatures and active layer thickness.
Vilmantas Prėskienis, Daniel Fortier, Peter M J Douglas, Milla Rautio, Isabelle Laurion   +4 more
doaj   +1 more source

Drying of tundra landscapes will limit subsidence-induced acceleration of permafrost thaw. [PDF]

Proc Natl Acad Sci U S A, 2023
Painter SL, Coon ET, Khattak AJ, Jastrow JD.   +3 more
europepmc   +1 more source

Coarse Sediment Transport in a Near‐Terminus Subglacial Channel

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract We present the first large‐sample, spatially resolved measurements of coarse sediment transport within a subglacial meltwater channel. We released 324 radio‐tagged pebbles into a near‐terminus channel of Glacier d’Otemma, Switzerland, and monitored their positions through 10–50 m of ice during the mid to late melt season.
Matt Jenkin, Davide Mancini, Floreana Miesen, Bryn Hubbard, Margaux Hofmann, Stuart N. Lane   +5 more
wiley   +1 more source

Drainage network response to Arctic warming. [PDF]

Nat Commun, 2023
Rowland JC.
europepmc   +1 more source

Small watersheds may play a disproportionate role in arctic land-ocean fluxes. [PDF]

Nat Commun, 2023
Vonk JE, Speetjens NJ, Poste AE.
europepmc   +1 more source

Eolian erosion of polygons in the Atacama Desert as a proxy for hyper-arid environments on Earth and beyond. [PDF]

Sci Rep, 2022
Sager C, Airo A, Arens FL, Schulze-Makuch D.   +3 more
europepmc   +1 more source

Bioreactivity of dissolved organic carbon in ponds of the ice-wedge polygonal tundra

Abstract. The role of ponds in transforming laterally exported dissolved organic matter (DOM) within polygonal landscapes affected by degrading ice-wedges remains poorly understood, despite their potential importance in carbon cycling. We hypothesized that the morphological and limnological diversity of ponds–driven by permafrost erosion and soil ...
Thomas Pacoureau, Milla Rautio, Isabelle Laurion   +2 more
openaire   +2 more sources

Permafrost in the Cretaceous supergreenhouse. [PDF]

Nat Commun, 2022
Rodríguez-López JP, Wu C, Vishnivetskaya TA, Murton JB, Tang W, Ma C.   +5 more
europepmc   +1 more source

Landscape patterns of carbon fluxes in natural and disturbed ice-wedge-polygon tundra

Arctic, Antarctic, and Alpine Research
The degradation of ice-rich permafrost ecosystems due to climate change and infrastructure development strongly impacts carbon exchange dynamics in tundra landscapes. This study investigates the effects of surficial geology and infrastructure disturbances from road dust and flooding on vegetation and trace gas fluxes in polygonal ice-wedge tundra in ...
Anja Kade, Donald A. Walker, Martha K. Raynolds, Amy L. Breen, Olivia M. Hobgood   +4 more
openaire   +2 more sources

Rapid seafloor changes associated with the degradation of Arctic submarine permafrost. [PDF]

Proc Natl Acad Sci U S A, 2022
Paull CK, Dallimore SR, Jin YK, Caress DW, Lundsten E, Gwiazda R, Anderson K, Hughes Clarke J, Youngblut S, Melling H.   +9 more
europepmc   +1 more source