Results 31 to 40 of about 1,136,547 (231)

Frozen Ground - The News Bulletin of the International Permafrost Association, No.19 [PDF]

, 1996
Frozen Ground - The News Bulletin of the International Permafrost Association, No ...
International Permafrost Association, IPA
core   +1 more source

Rapid Saline Permafrost Thaw Below a Shallow Thermokarst Lake in Arctic Alaska

Geophysical Research Letters, 2023
Permafrost warming and degradation is well documented across the Arctic. However, observation‐ and model‐based studies typically consider thaw to occur at 0°C, neglecting the widespread occurrence of saline permafrost in coastal plain regions.
Benjamin M. Jones, Mikhail Z. Kanevskiy, Andrew D. Parsekian, Helena Bergstedt, Melissa K. Ward Jones, Rodrigo C. Rangel, Kenneth M. Hinkel, Yuri Shur   +7 more
doaj   +1 more source

Rapid and Gradual Permafrost Thaw: A Tale of Two Sites

Geophysical Research Letters, 2022
Warming temperatures and increasing disturbance by wildfire and extreme weather events is driving permafrost change across northern latitudes. The state of permafrost varies widely in space and time, depending on landscape, climate, hydrologic, and ...
B. J. Minsley, N. J. Pastick, S. R. James, D. R. N. Brown, B. K. Wylie, M. A. Kass, V. E. Romanovsky   +6 more
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, C. E. Jones, G. Altmann, R. Bryan, B. T. Crosby, L. D. Hinzman, D. L. Kane, D. M. Lawrence, A. Mancino, P. Marsh, J. P. McNamara, V. E. Romanvosky, H. Toniolo, B. J. Travis, E. Trochim, C. J. Wilson, G. L. Geernaert   +16 more
openaire   +1 more source

Spatial controls of methane uptake in upland soils across climatic and geological regions in Greenland

Communications Earth & Environment, 2023
In the Arctic, the spatiotemporal variation of net methane uptake in upland soils depends on unresolved interactive controls between edaphic and microbial factors not yet included in current models, underpinning the uncertainty of upscaling the Arctic ...
Ludovica D’Imperio, Bing-Bing Li, James M. Tiedje, Youmi Oh, Jesper Riis Christiansen, Sebastian Kepfer-Rojas, Andreas Westergaard-Nielsen, Kristian Koefoed Brandt, Peter E. Holm, Peiyan Wang, Per Ambus, Bo Elberling   +11 more
doaj   +1 more source

Permafrost and lakes control river isotope composition across a boreal Arctic transect in the Western Siberian lowlands

Environmental Research Letters, 2018
The Western Siberian Lowlands (WSL) store large quantities of organic carbon that will be exposed and mobilized by the thawing of permafrost. The fate of mobilized carbon, however, is not well understood, partly because of inadequate knowledge of ...
P Ala-aho, C Soulsby, O S Pokrovsky, S N Kirpotin, J Karlsson, S Serikova, R Manasypov, A Lim, I Krickov, L G Kolesnichenko, H Laudon, D Tetzlaff   +11 more
doaj   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Policy implications of warming permafrost [PDF]

, 2012
Permafrost is perennially frozen ground occurring in about 24% of the exposed land surface in the Northern Hemisphere. The distribution of permafrost is controlled by air temperature and, to a lesser extent, by snow depth, vegetation, orientation to ...

core  

Biodegradability of dissolved organic carbon in permafrost soils and aquatic systems: A meta-analysis [PDF]

, 2015
As Arctic regions warm and frozen soils thaw, the large organic carbon pool stored in permafrost becomes increasingly vulnerable to decomposition or transport.
Tank, Suzanne, Striegl, R.G., C. C. Treat, Tank, S.E., Wickland, K. P., K. P. Wickland, R. G. M. Spencer, Tank, Suzanne E., Spencer, Robert, Treat, Claire, Mann, P. J., Abbott, Benjamin, Treat, C. C., Vonk, J. E.; id_orcid, Spencer, R. G M, Striegl, Robert, Striegl, Robert G., Vonk, Jorien, Spencer, Robert G M, Mann, Paul, Treat, Claire C., S. E. Tank, R. G. Striegl, Wickland, K.P., Abbott, B.W., Tank, S. E., Organic geochemistry, Spencer, Robert G.M., Wickland, Kimberly, Abbott, B. W., Striegl, R. G., Wickland, Kimberly P., Vonk, Jorien E., B. W. Abbott, Abbott, Benjamin W., NWO-VENI: Ancient organic matter that matters: The fate of Siberian Yedoma deposits, J. E. Vonk, P. J. Mann, Mann, Paul J., Vonk, J. E.   +39 more
core   +2 more sources

Frozen Ground - The News Bulletin of the International Permafrost Association, No.31 [PDF]

, 2007
Frozen Ground - The News Bulletin of the International Permafrost Association, No ...
International Permafrost Association, IPA
core   +1 more source