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Role of ground ice dynamics and ecological feedbacks in recent ice wedge degradation and stabilization

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Jorgenson, M.T., Kanevskiy, M., Shur, Y., Moskalenko, N., Brown, D.N.R., Wickland, K., Striegl, R., and Koch, J., 2015, Role of ground ice dynamics and ecological feedbacks in recent ice wedge degradation and stabilization, J. Geophys. Res. Earth Surf., 120, doi:10.1002/2015JF003602.

Summary

Ground ice is abundant in the upper permafrost throughout the Arctic and fundamentally affects terrain responses to climate warming. Ice wedges, which form near the surface and are the dominant type of massive ice in the Arctic, are particularly vulnerable to warming. Yet processes controlling ice wedge degradation and stabilization are poorly understood. Here we quantified ice wedge volume and degradation rates, compared ground ice characteristics and thermal regimes across a sequence of five degradation and stabilization stages and evaluated biophysical feedbacks controlling permafrost stability near Prudhoe Bay, Alaska. Mean ice wedge volume in the top 3 m of permafrost was 21%. Imagery from 1949 to 2012 showed thermokarst extent [...]

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Type Scheme Key
local-index unknown 70171003
local-pk unknown 70171003
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1002/2015JF003602
series unknown Journal of Geophysical Research F: Earth Surface

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citationTypeArticle
journalJournal of Geophysical Research F: Earth Surface
languageEnglish
parts
typevolume
value120
typeissue
value11
typePublication Place
valueRichmond, VA

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