Yedoma
Yedoma is an organic-rich (about 2% carbon by mass) Pleistocene-age loess permafrost with ice content of 50–90% by volume. The amount of carbon trapped in this type of permafrost is much more prevalent than originally thought and may be about 500 Gt, that is almost 100 times the amount of carbon released into the air each year by the burning of fossil fuels. Thawing yedoma is a significant source of atmospheric methane (about 4 Tg of CH
4 per year).
Yedoma currently occupies an area of more than one million square kilometers in northeast Siberia, and in many regions is tens of meters thick. During the Last Glacial Maximum, when the global sea level was 120 m lower than that of today, similar deposits covered substantial areas of the exposed northeast Eurasian continental shelves. At the end of last ice age, at the PleistoceneHolocene transition, thawing yedoma and the resulting thermokarst lakes may have produced 33 to 87% of the high-latitude increase in atmospheric methane concentration.

This is an excerpt from the article Yedoma from the Wikipedia free encyclopedia. A list of authors is available at Wikipedia.
The article Yedoma at en.wikipedia.org was accessed 304 times in the last 30 days. (as of: 11/06/2013)
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Yedoma - Wikipedia, the free encyclopedia
Yedoma is an organic-rich (about 2% carbon by mass) Pleistocene-age loess permafrost with ice content of 50–90% by volume. The amount of carbon trapped  ...
en.wikipedia.org/wiki/Yedoma
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Dissolved organic carbon loss from Yedoma ... - IOPscience
Pleistocene Yedoma permafrost contains nearly a third of all organic matter (OM) stored in circum-arctic permafrost and is characterized by the presence of ...
iopscience.iop.org/1748-9326/8/3/035023
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Yedoma Region of Russia Showing Significant Methane Pulse ...
Aug 8, 2013 ... (Image source: Methane Tracker) August 4-7 saw a large and growing pulse of methane emerging from the Yedoma region of Russia and the ...
robertscribbler.wordpress.com/2013/08/08/yedoma-region-of-russia-showing-significant-methane-pulse/
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The deep permafrost carbon pool of the Yedoma region in Siberia ...
Dec 11, 2013 ... The deep permafrost carbon pool of the Yedoma region in Siberia and Alaska. Jens Strauss1,*,; Lutz Schirrmeister1,; Guido Grosse1,2, ...
onlinelibrary.wiley.com/doi/10.1002/2013GL058088/abstract
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Organic carbon pools in the yedoma region. : A shift of thermokarst ...
Jul 24, 2014 ... Our Yedoma-region total organic carbon pool-size estimate (456 ± 45 Pg; Extended Data Table 3) is the sum of the following subset pools: (1) ...
www.nature.com/nature/journal/v511/n7510/fig_tab/nature13560_SF5.html
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Yedoma: Late Pleistocene Ice-Rich Syngenetic ... - ePIC - AWI
Yedoma: Late Pleistocene Ice-Rich Syngenetic Permafrost of Beringia. L Schirrmeister, Alfred Wegener Institute for Polar and Marine Research, Potsdam,  ...
epic.awi.de/32922/1/Yedoma-Encyclopedia_QS.pdf
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Download (1787Kb) - ePIC - AWI
Distribution of Late Pleistocene Ice-Rich Syngenetic. Permafrost of the Yedoma Suite in East and Central Siberia,. Russia. Open-File Report 2013-1078.
epic.awi.de/33878/1/ofr20131078.pdf
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Siberian Arctic Yedoma permafrost carbon release 10x faster than ...
Sep 7, 2012 ... Melting Siberian Yedoma permafrost could potentially release up to 500 Gt pure carbon, thereby posing one of the world's most serious climate ...
www.bitsofscience.org/siberian-arctic-yedoma-permafrost-carbon-release-6213/
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Carbon entering Arctic Ocean from Yedoma permafrost ...
Oct 9, 2012 ... Ten times more carbon is released each year to the ocean from ancient Yedoma permafrost in Siberia than scientists previously believed, ...
environmentalresearchweb.org/cws/article/news/51081
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yedoma - National Snow and Ice Data Center
nsidc.org/cgi-bin/words/word.pl?yedoma
Search results for "Yedoma"
Google: approx. 13.900
Yedoma in science
Yedoma - Wikipedia, the free encyclopedia
For the rural localities in Russia, see Yedoma (rural locality). ... Frederick West ( 1996), American Beginnings The University of Chicago Press, ISBN ...
Organic carbon pools in the yedoma region. : A shift of thermokarst ...
Jul 24, 2014 ... Our Yedoma-region total organic carbon pool-size estimate (456 ± 45 Pg; Extended Data Table 3) is the sum of the following subset pools: (1) ...
Dissolved organic carbon loss from Yedoma permafrost amplified by ...
Pleistocene Yedoma permafrost contains nearly a third of all organic matter (OM) stored in circum-arctic permafrost and ... UiT - The Arctic University of Norway.
[PDF]Yedoma: Late Pleistocene Ice-Rich Syngenetic ... - ePIC - AWI
V Tumskoy, Lomonosov Moscow State University, Moscow, Russia. G Grosse ... latter concept of Yedoma is the one used in this article, encom- passing ...
Organic carbon and nitrogen storages of Yedoma-underlain areas of ...
Organic carbon and nitrogen storages of Yedoma-underlain areas of the Lena ... KlimaCampus, University of Hamburg, Hamburg, Germany Lars Kutzbach, ...
Ancient Yedoma carbon loss: primed by ice wedge thaw? | The ...
Sep 4, 2012 ... Yedoma deposits are accumulations of windblown dust and riverine sediments ... College of the Holy Cross, Clark University, St. Olaf College,
The deep permafrost carbon pool of the Yedoma region in Siberia ...
Dec 11, 2013 ... Jens Strauss1,*,; Lutz Schirrmeister1,; Guido Grosse1,2,; Sebastian Wetterich1,; Mathias Ulrich3,; Ulrike Herzschuh1 and; Hans-Wolfgang ...
Quantifying Wedge‐Ice Volumes in Yedoma and Thermokarst Basin ...
Jun 4, 2014 ... Wedge-ice volume (WIV) is a key factor in assessing the response of ice-rich permafrost landscapes to thaw and in quantifying deep permafrost ...
Siberian Arctic Yedoma permafrost carbon release 10x faster than ...
Sep 7, 2012 ... Melting Siberian Yedoma permafrost could potentially release up to 500 ... led by Stockholm University, has calculated that the coastal Yedoma ...
SWERUS-C3 scientists lead study in Nature on carbon release from ...
The team found that the tens-of-thousands year old Yedoma carbon is ... professor Örjan Gustafsson and jointly first-authored by Stockholm University PhD ...
Books on the term Yedoma
Permafrost: Second International Conference, July 13-28, ...
Frederick J. Sanger, Peter J. Hyde, 1978
Yedoma, like loess, is present in the form of thick deposits not only on the high terraces but also on the interfluves, its thickness frequently increasing with the height of occurrence. The fact that the Yedoma forms just such thick masses is noted ...
American Beginnings: The Prehistory and Palaeoecology of ...
Frederick Hadleigh West, Constance F. West, 1996
COMPOSITION OF Yedoma SEDIMENT The sediments in question are mainly loams in gra- nulometric composition, but occasionally sandy loams. Coarse silt ( 0.05-0.01 mm) (the loessic fraction) dominates. According to data collected by ...
Sedimentology of Thermokarst Lakes Forming Within Yedoma on ...
Louise M. Farquharson, 2012
Thermokarst lakes forming in Yedoma (organic-rich permafrost containing massive syngenetic Pleistocene ice wedges) play an important role in periglacial landscape evolution.
Paleoecology of Beringia
David M. Hopkins, John V. Matthews, Charles E. Schweger, 2013
of vertical roots of herbaceous plants, often penetrating the whole thickness of the Yedoma, rules out the possibility of subaqueous formation of these deposits. Our investigations of the thermal regime beneath the lakes on the Anadyr tundra ...
In the Beginning: Compelling Evidence for Creation and the Flood (7th Edition)
In the Beginning: Compelling Evidence for Creation and the Flood (7th Edition)
2001
This understandable, comprehensive, and meticulously documented resource gives new insights that could revolutionize understandings of the beginnings of time and subsequent events.
Carbon-free Energy Supply
Leslie Daryl Danny Harvey, 2010
the impact of local warming on the Yedoma soils, and they estimate that intense mobilization of carbon (2–3GtC/yr) would begin when the regional warming reaches about 9°C and continue for about 100 years. Inasmuch as the mean annual ...
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Blog posts on the term
Yedoma
Yedoma Region of Russia Showing Significant Methane Pulse | robertscribbler
(Image source: Methane Tracker) August 4-7 saw a large and growing pulse of methane emerging from the Yedoma region of Russia and the Siberian Arctic over the past week. By Wednesday, about 30 percent of the Yedoma region was covered in methane readings exceeding 1950 parts per billion, according to measurements published through the online…
robertscribbler.wordpress.com/2013/08/08/yedoma-region-of-russia-showing-significant-methane-pulse/
Dissolved organic carbon loss from Yedoma permafrost amplified by ice wedge thaw - Abstract - Environmental Research Letters - IOPscience
Pleistocene Yedoma permafrost contains nearly a third of all organic matter (OM) stored in circum-arctic permafrost and is characterized by the presence of massive ice wedges. Due to its rapid formation by sediment accumulation and subsequent frozen storage, Yedoma OM is relatively well preserved and highly biologically available (biolabile) upon thaw. A better understanding of the processes regulating Yedoma degradation is important to improve estimates of the response and magnitude of permafrost carbon feedbacks to climate warming. In this study, we examine the composition of ice wedges and the influence of ice wedge thaw on the biolability of Yedoma OM. Incubation assays were used to assess OM biolability, fluorescence spectroscopy to characterize the OM composition, and potential enzyme activity rates to examine the controls and regulation of OM degradation. We show that increasing amounts of ice wedge melt water in Yedoma-leached incubations enhanced the loss of dissolved OM over time. This may be attributed to the presence of low-molecular weight compounds and low initial phenolic content in the OM of ice wedges, providing a readily available substrate that promotes the degradation of Yedoma OC. The physical vulnerability of ice wedges upon thaw (causing irreversible collapse), combined with the composition of ice wedge-engrained OM (co-metabolizing old OM), underlines the particularly strong potential of Yedoma to generate a positive feedback to climate warming relative to other forms of non-ice wedge permafrost.
iopscience.iop.org/1748-9326/8/3/035023
yedoma | Polar Field Services
polarfield.com/blog/tag/yedoma/
Ancient Yedoma carbon loss: primed by ice wedge thaw? | The Polaris Project
www.thepolarisproject.org/ancient-yedoma-carbon-loss-primed-by-ice-wedge-thaw/
Climate Change: The Next Generation: ERL: massive ice wedges in Yedoma permafrost amplify carbon loss
Insight: massive ice wedges in Yedoma permafrost amplify carbon loss by environmentalresearchweb, October 1, 2013 Yedoma permafrost stores about a third of all organic carbon in circum-Arctic permafrost and is characterized by massive ice wedges that make up around 50% of the total volume. We investigated how ice wedge thaw affects Yedoma permafrost and found that organic matter engrained in the ice wedges can degrade Yedoma carbon. The findings, published in Environmental Research Letters (ERL), highlight how this type of permafrost thawing could significantly contribute to climate change. Ice wedge sampling When permafrost thaws, the carbon contained can degrade and be released into the atmosphere.
climatechangepsychology.blogspot.com/2013/10/erl-massive-ice-wedges-in-yedoma.html
Geocryolab » yedoma
Van Wychen, W., et al. (2013).
geocryolab.ca/ice/en/tag/yedoma-fr-en/
Carbon entering Arctic Ocean from Yedoma permafrost - environmentalresearchweb
Ten times more carbon released each year than previously believed
environmentalresearchweb.org/cws/article/news/51081
Cryostratigraphy of late Pleistocene syngenetic permafrost (yedoma) in northern Alaska, Itkillik River exposure
www.sciencedirect.com/science/article/pii/S0033589410001468
Paryginskaya Yedoma, Russia free weather widget | Weather Plugin | World Weather Online
Paryginskaya Yedoma, Russia - Free Weather Widget for your website, wordpress and CMS
www.worldweatheronline.com/Paryginskaya-Yedoma-weather-widget/Arkhangelsk/RU.aspx
Yedoma: Late Pleistocene ice-rich syngenetic permafrost of Beringia | Permafrost Laboratory
permafrost.gi.alaska.edu/content/yedoma-late-pleistocene-ice-rich-syngenetic-permafrost-beringia
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