scholarly journals Surge-type glaciers in the Russian High Arctic identified from digital satellite imagery

1997 ◽  
Vol 43 (145) ◽  
pp. 489-494 ◽  
Author(s):  
Julian A. Dowdeswell ◽  
Meredith Williams
Keyword(s):  
Thermal Structure ◽  
High Arctic ◽  
Drainage Basins ◽  
Novaya Zemlya ◽  
Ice Cap ◽  
Franz Josef Land ◽  
Covered Area ◽  
Glacier Surges ◽  
Severnaya Zemlya ◽  
Summer Time

AbstractLandsat digital imagery was used to search the island archipelagos of Franz Josef Land, Severnaya Zemlya and Novaya Zemlya, Russian High Arctic, for the presence of looped moraines characteristic of past glacier surges. The imagery provides almost complete summer-time coverage of the 60 000 km2 of ice in these islands. very few surge-type glaciers are identified: none in Franz Josef Land, three in Novaya Zemlya and two on Severnaya Zemlya. This contrasts greatly with Svalbard (ice-covered area 36 600 km2), to the west, where 36% of glaciers and ice-cap drainage basins are inferred to surge. The strong climatic gradient across the Eurasian High Arctic, with decreasing temperature and moisture eastward, may provide a gross control on this pattern through colder glacier thermal structure, limiting basal drainage on the thinner ice masses in particular.

scholarly journals Surge-type glaciers in the Russian High Arctic identified from digital satellite imagery

1997 ◽  
Vol 43 (145) ◽  
pp. 489-494 ◽  
Author(s):  
Julian A. Dowdeswell ◽  
Meredith Williams
Keyword(s):  
Thermal Structure ◽  
High Arctic ◽  
Drainage Basins ◽  
Novaya Zemlya ◽  
Ice Cap ◽  
Franz Josef Land ◽  
Covered Area ◽  
Glacier Surges ◽  
Severnaya Zemlya ◽  
Summer Time

AbstractLandsat digital imagery was used to search the island archipelagos of Franz Josef Land, Severnaya Zemlya and Novaya Zemlya, Russian High Arctic, for the presence of looped moraines characteristic of past glacier surges. The imagery provides almost complete summer-time coverage of the 60 000 km2of ice in these islands. very few surge-type glaciers are identified: none in Franz Josef Land, three in Novaya Zemlya and two on Severnaya Zemlya. This contrasts greatly with Svalbard (ice-covered area 36 600 km2), to the west, where 36% of glaciers and ice-cap drainage basins are inferred to surge. The strong climatic gradient across the Eurasian High Arctic, with decreasing temperature and moisture eastward, may provide a gross control on this pattern through colder glacier thermal structure, limiting basal drainage on the thinner ice masses in particular.

scholarly journals Brief communication: Accelerated glacier mass loss in the Russian Arctic (2010–2017)

2020 ◽  
Author(s):  
Christian Sommer ◽  
Thorsten Seehaus ◽  
Andrey Glazovsky ◽  
Matthias H. Braun
Keyword(s):  
Mass Loss ◽  
Sea Level Rise ◽  
Sea Level ◽  
Global Climate ◽  
High Arctic ◽  
Novaya Zemlya ◽  
Franz Josef Land ◽  
Surface Elevation Change ◽  
Radar Measurements ◽  
Severnaya Zemlya

Abstract. Glaciers in the Russian High Arctic have been subject to extensive warming due to global climate change, yet their contribution to sea level rise has been relatively small over the past decades. Here we show surface elevation change measurements and geodetic mass balances of 93 % of all glacierized areas of Novaya Zemlya, Severnaya Zemlya and Franz Josef Land using interferometric synthetic aperture radar measurements taken between 2010 and 2017. We calculate an overall mass loss 10 rate of −23 ± 5 Gt a−1, corresponding to a sea level rise contribution of 0.06 ± 0.01 mm a−1. Compared to measurements prior to 2010, mass loss of glaciers on the Russian archipelagos has doubled in recent years.

scholarly journals Brief communication: Increased glacier mass loss in the Russian High Arctic (2010–2017)

2022 ◽  
Vol 16 (1) ◽  
pp. 35-42
Author(s):  
Christian Sommer ◽  
Thorsten Seehaus ◽  
Andrey Glazovsky ◽  
Matthias H. Braun
Keyword(s):  
Mass Loss ◽  
Sea Level Rise ◽  
Sea Level ◽  
Global Climate ◽  
Mass Loss Rate ◽  
High Arctic ◽  
Novaya Zemlya ◽  
Franz Josef Land ◽  
Surface Elevation Change ◽  
Severnaya Zemlya

Abstract. Glaciers in the Russian High Arctic have been subject to extensive atmospheric warming due to global climate change, yet their contribution to sea level rise has been relatively small over the past decades. Here we show surface elevation change measurements and geodetic mass balances of 93 % of all glacierized areas of Novaya Zemlya, Severnaya Zemlya, and Franz Josef Land using interferometric synthetic aperture radar measurements taken between 2010 and 2017. We calculate an overall mass loss rate of -22±6 Gt a−1, corresponding to a sea level rise contribution of 0.06±0.02 mm a−1. Compared to measurements prior to 2010, mass loss of glaciers on the Russian archipelagos has doubled in recent years.

scholarly journals U–Pb Age and Hf Isotope Geochemistry of Detrital Zircons from Cambrian Sandstones of the Severnaya Zemlya Archipelago and Northern Taimyr (Russian High Arctic)

Minerals ◽  
2019 ◽  
Vol 10 (1) ◽  
pp. 36 ◽  
Author(s):  
Victoria B. Ershova ◽  
Andrei V. Prokopiev ◽  
Andrey K. Khudoley ◽  
Tom Andersen ◽  
Kåre Kullerud ◽  
...  
Keyword(s):  
Detrital Zircon ◽  
Isotope Geochemistry ◽  
High Arctic ◽  
Detrital Zircons ◽  
Hf Isotope ◽  
Magmatic Arc ◽  
Novaya Zemlya ◽  
Late Neoproterozoic ◽  
Severnaya Zemlya ◽  
Severnaya Zemlya Archipelago

U–Pb and Lu–Hf isotope analyses of detrital zircons collected from metasedimentary rocks from the southern part of Kara Terrane (northern Taimyr and Severnaya Zemlya archipelago) provide vital information about the paleogeographic and tectonic evolution of the Russian High Arctic. The detrital zircon signatures of the seven dated samples are very similar, suggesting a common provenance for the clastic detritus. The majority of the dated grains belong to the late Neoproterozoic to Cambrian ages, which suggests the maximum depositional age of the enclosing sedimentary units to be Cambrian. The εHf(t) values indicate that juvenile magma mixed with evolved continental crust and the zircons crystallized within a continental magmatic arc setting. Our data strongly suggest that the main provenance for the studied clastics was located within the Timanian Orogen. A review of the available detrital zircon ages from late Neoproterozoic to Cambrian strata across the wider Arctic strongly suggests that Kara Terrane, Novaya Zemlya, Seward Peninsula (Arctic Alaska), Alexander Terrane, De Long Islands, and Scandinavian Caledonides all formed a single tectonic domain during the Cambrian age, with clastics predominantly sourced from the Timanian Orogen.

scholarly journals Quantifying the Mass Balance of Ice Caps on Severnaya Zemlya, Russian High Arctic. I: Climate and Mass Balance of the Vavilov Ice Cap

2006 ◽  
Vol 38 (1) ◽  
pp. 1-12 ◽  
Author(s):  
R. P. Bassford ◽  
M. J. Siegert ◽  
J. A. Dowdeswell ◽  
J. Oerlemans ◽  
A. F. Glazovsky ◽  
...  
Keyword(s):  
Mass Balance ◽  
High Arctic ◽  
Ice Caps ◽  
Ice Cap ◽  
Severnaya Zemlya

scholarly journals The first aeromagnetic survey in the Arctic: results of the Graf Zeppelin airship flight of 1931

2013 ◽  
Vol 4 (1) ◽  
pp. 35-46
Author(s):  
O. M. Raspopov ◽  
S. N. Sokolov ◽  
I. M. Demina ◽  
R. Pellinen ◽  
A. A. Petrova
Keyword(s):  
Magnetic Field ◽  
Anomalous Behavior ◽  
The Arctic ◽  
Taimyr Peninsula ◽  
Aeromagnetic Survey ◽  
International Polar Year ◽  
Novaya Zemlya ◽  
Franz Josef Land ◽  
Severnaya Zemlya ◽  
The Magnetic Field

Abstract. In July of 1931, on the eve of International Polar Year II, an Arctic flight of the Graf Zeppelin rigid airship was organized. This flight was a realization of the idea of F. Nansen, who advocated the use of airships for the scientific exploration of the Arctic territories, which were poorly studied and hardly accessible at that time. The route of the airship flight was Berlin – Leningrad – Arkhangelsk – Franz Josef Land – Severnaya Zemlya – the Taimyr Peninsula – Novaya Zemlya – Arkhangelsk – Berlin. One of scientific goals of the expedition was to measure the H and D geomagnetic field components. Actually, the first aeromagnetic survey was carried out in the Arctic during the flight. After the expedition, only preliminary results of the geomagnetic measurements, in which an anomalous behavior of magnetic declination in the high-latitude part of the route was noted, were published. Our paper is concerned with the first aeromagnetic measurements in the Arctic and their analysis based on archival and modern data on the magnetic field in the Barents and Kara sea regions. It is shown that the magnetic field along the flight route had a complicated structure, which was not reflected in the magnetic charts of those times. The flight was very important for future development of aero- and ground-based magnetic surveys in the Arctic, showing new methods in such surveys.

scholarly journals The Drabo corymbosae-Papaveretea dahliani − a new vegetation class of the High Arctic polar deserts

Hacquetia ◽  
2016 ◽  
Vol 15 (1) ◽  
pp. 5-13 ◽  
Author(s):  
Fred J. A. Daniëls ◽  
Arve Elvebakk ◽  
Nadezhda V. Matveyeva ◽  
Ladislav Mucina
Keyword(s):  
Canadian Arctic ◽  
High Arctic ◽  
New Order ◽  
Canadian Arctic Archipelago ◽  
New Class ◽  
Franz Josef Land ◽  
Northern Regions ◽  
Vegetation Class ◽  
Severnaya Zemlya ◽  
Severnaya Zemlya Archipelago

Abstract A new class and a new order (Drabo corymbosae-Papaveretea dahliani and Saxifrago oppositifoliae-Papaveretalia dahliani) have been described, and the Papaverion dahliani validated. This is vegetation of zonal habitats in lowlands of the High Arctic subzone A (or Arctic herb, cushion forb or polar desert subzone) and of ecologically equivalent sites at high altitudes on the mountain plateaus of the High Arctic. The new class spans three continents – North America (Canadian Arctic Archipelago and Greenland), Europe (parts of Svalbard and Franz Josef Land), and Asia, including northern regions of Chelyuskin Peninsula (Taymir Peninsula), Severnaya Zemlya Archipelago and De Longa Islands.

scholarly journals Recent retreat of major outlet glaciers on Novaya Zemlya, Russian Arctic, influenced by fjord geometry and sea-ice conditions

2014 ◽  
Vol 60 (219) ◽  
pp. 155-170 ◽  
Author(s):  
J. Rachel Carr ◽  
Chris Stokes ◽  
Andreas Vieli
Keyword(s):  
Sea Ice ◽  
Barents Sea ◽  
High Arctic ◽  
Glacier Retreat ◽  
Major Influence ◽  
Ice Dynamics ◽  
Novaya Zemlya ◽  
Ice Cap ◽  
Relative Contribution ◽  
Order Of Magnitude

AbstractSubstantial ice loss has occurred in the Russian High Arctic during the past decade, predominantly on Novaya Zemlya, yet the region has been studied relatively little. Consequently, the factors forcing mass loss and the relative contribution of ice dynamics versus surface melt are poorly understood. Here we evaluate the influence of atmospheric/oceanic forcing and variations in fjord width on the behaviour of 38 glaciers on the northern ice cap, Novaya Zemlya. We compare retreat rates on land- versus marine-terminating outlets and on the Kara versus Barents Sea coasts. Between 1992 and 2010, 90% of the study glaciers retreated and retreat rates were an order of magnitude higher for marine-terminating outlets (52.1 ma-1) than for land-terminating glaciers (4.8ma-1). We identify a post-2000 acceleration in marine-terminating glacier retreat, which corresponded closely to changes in sea-ice concentrations. Retreat rates were higher on the Barents Sea coast, which we partly attribute to lower sea-ice concentrations, but varied dramatically between individual glaciers. We use empirical data to categorize changes in along-flow fjord width, and demonstrate a significant relationship between fjord width variability and retreat rate. Results suggest that variations in fjord width exert a major influence on glacier retreat.

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