Shur, Yuri

34 items:

Resilience and vulnerability of permafrost to climate change Categories: Publication; Types: Citation; Tags: Modeling, Monitoring 3-Improve Permafrost Mapping, Projecting Future States 1-Predict or Map the Impact of Changing Permafrost, and Monitoring
Cryostratigraphy and Permafrost Evolution in the Lacustrine Lowlands of West-Central Alaska The influence of permafrost growth and thaw on the evolution of ice-rich lowland terrain in the Koyukuk-Innoko region of interior Alaska is fundamental but poorly understood. To elucidate this influence, the cryostratigraphy and properties of perennially frozen sediments from three areas in this region are described and interpreted in terms of permafrost history. The upper part of the late Quaternary sediments at the Koyukuk and Innoko Flats comprise frozen organic soils up to 4.5 m thick underlain by ice-rich silt characterised by layered and reticulate cryostructures. The volume of visible segregated ice in silt locally reaches 50 per cent, with ice lenses up to 10 cm thick. A conceptual model of terrain evolution... Categories: Publication; Types: Citation; Tags: Modeling, Monitoring 3-Improve Permafrost Mapping, and Monitoring
Cryostratigraphy and Permafrost Evolution in the Lacustrine Lowlands of West-Central Alaska The influence of permafrost growth and thaw on the evolution of ice-rich lowland terrain in the Koyukuk-Innoko region of interior Alaska is fundamental but poorly understood. To elucidate this influence, the cryostratigraphy and properties of perennially frozen sediments from three areas in this region are described and interpreted in terms of permafrost history. The upper part of the late Quaternary sediments at the Koyukuk and Innoko Flats comprise frozen organic soils up to 4.5 m thick underlain by ice-rich silt characterised by layered and reticulate cryostructures. The volume of visible segregated ice in silt locally reaches 50 per cent, with ice lenses up to 10 cm thick. A conceptual model of terrain evolution... Categories: Publication; Types: Citation; Tags: M3-Improve Permafrost Mapping, Modeling, and Monitoring
Permafrost dynamics at the Fairbanks Permafrost Experimental Station near Fairbanks, Alaska The Fairbanks Permafrost Experimental Station was established in 1945 near Fairbanks, Alaska. In 1946 vegetation was removed from two plots (the Linell plots) to investigate the impacts of vegetation disturbance on permafrost degradation. We revisited the sites in 2007 to evaluate the permafrost table using probes and direct current electrical resistivity. The permafrost table has expanded downward to 9.8 m at a site where all surface vegetation and organic material was removed. The permafrost surface has remained at 4.7 m depth since 1972 at a second site where vegetation was removed but organic material was left intact. In 2005 a Circumpolar Active Layer Monitoring Network (CALM) site was established at an undisturbed... Categories: Publication; Types: Citation; Tags: Projecting Future States 1-Predict or Map the Impact of Changing Permafrost
Resilience and vulnerability of permafrost to climate change Categories: Publication; Types: Citation; Tags: M3-Improve Permafrost Mapping, Modeling, P1-Predict/Map Impact Changing Permafrost, and Monitoring

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