Results 31 to 40 of about 24,566 (233)
Beaded streams of Arctic permafrost landscapes [PDF]
, 2014 Abstract. Beaded streams are widespread in permafrost regions and are considered a common thermokarst landform. However, little is known about their distribution, how and under what conditions they form, and how their intriguing morphology translates to ecosystem functions and habitat. Here we report on a Circum-Arctic inventory of beaded streams and a
C. D. Arp +5 more
openaire +1 more source
Effect of permafrost thaw on CO2 and CH4 exchange in a western Alaska peatland chronosequence [PDF]
, 2014 Permafrost soils store over half of global soil carbon (C), and northern frozen peatlands store about 10% of global permafrost C. With thaw, inundation of high latitude lowland peatlands typically increases the surface-atmosphere flux of methane (CH4), a
Ewing, Stephanie A. +8 more
core +2 more sources
Geosciences, 2023 Rapid Arctic warming is expected to result in widespread permafrost degradation. However, observations show that site-specific conditions (vegetation and soils) may offset the reaction of permafrost to climate change.
Gleb E. Oblogov +4 more
doaj +1 more source
Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach [PDF]
The Cryosphere, 2016 Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon release,
W. L. Cable +3 more
doaj +1 more source
Complex Vulnerabilities of the Water and Aquatic Carbon Cycles to Permafrost Thaw
Frontiers in Climate, 2021 The spatial distribution and depth of permafrost are changing in response to warming and landscape disturbance across northern Arctic and boreal regions. This alters the infiltration, flow, surface and subsurface distribution, and hydrologic connectivity
Michelle A. Walvoord, Robert G. Striegl
doaj +1 more source
Arctic Landscapes in Transition: Responses to Thawing Permafrost [PDF]
Eos, Transactions American Geophysical Union, 2010 Observations indicate that over the past several decades, geomorphic processes in the Arctic have been changing or intensifying. Coastal erosion, which currently supplies most of the sediment and carbon to the Arctic Ocean [Rachold et al., 2000], may have doubled since 1955 [Mars and Houseknecht, 2007].
J. C. Rowland +16 more
openaire +1 more source
Enhanced CO2 emissions driven by flooding in a simulation of palsa degradation [PDF]
BiogeosciencesClimate change is predicted to put most of the permafrost habitats in the discontinuous zone at risk of disappearing within the next few decades. On a decadal scale, abrupt permafrost thaw may result in larger C losses than gradual permafrost thaw, but ...
M. Laurent +13 more
doaj +1 more source
Eastern Beringia and beyond: Late Wisconsinan and Holocene landscape dynamics along the Yukon Coastal Plain, Canada [PDF]
, 2012 Terrestrial permafrost archives along the Yukon Coastal Plain (northwest Canada) have recorded landscape development and environmental change since the Late Wisconsinan at the interface of unglaciated Beringia (i.e.
Fritz, Michael +6 more
core +1 more source
A Modeling Toolbox for Permafrost Landscapes
Eos, 2018 A new resource makes it easier for researchers to explore predictions of how melting permafrost might affect carbon release, wetlands, and river deltas as they evolve and other interacting effects.
Overeem, Irina +7 more
openaire +1 more source
Environmental Research Letters, 2023 Northwestern Canada is currently warming nearly four times faster than the global average, driving accelerated permafrost thaw and changes to ecosystem vegetation, hydrology and landscape structure across the landscape.
Pénélope Germain Chartrand +3 more
doaj +1 more source