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  • 1
    Book
    Book
    Glacimarine environments : processes and sediments (1990)
    London : Geological Society
    Details Availability
    Keywords: Konferenzschrift 1989 ; Konferenzschrift ; Meer ; Treibeis ; Glaziales Sediment ; Meeressediment ; Meereis ; Sediment ; Sedimenttransport ; Meer ; Treibeis ; Glaziales Sediment ; Meeressediment ; Meereis ; Sediment ; Sedimenttransport ; Glaziales Sediment ; Glaziomarine Sedimentation
    Type of Medium: Book
    Pages: VII, 423 S. , Ill., graph. Darst., Kt.
    Edition: 1. publ.
    ISBN: 0903317540
    Series Statement: Special publication / Geological Society 53
    URL: https://www.gbv.de/dms/tib-ub-hannover/025365533.pdf
    DDC: 551.46083
    RVK:
    RB 10372
    Language: English
    Note: Includes bibliographical references and indexes
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  • 2
    Online Resource
    Online Resource
    Atlas of submarine glacial landforms : modern, Quaternary and ancient / edited by J.A. Dowdeswell (University of Cambridge, UK), M. Canals (University of Barcelona, Spain), M. Jakobsson, Stockholm University, Sweden), B.J. Todd (Geological Survey of Canada, Canada), E.K. Dowdesweell (University of Cambridge, UK) and K.A. Hogan (British Antarctic Survey, UK) (2016)
    London : Geological Society
    Details Availability
    Keywords: Aufsatzsammlung ; Nordpolarmeer ; Glaziomarine Sedimentation ; Meeressediment ; Sedimentation ; Meeresboden ; Aufsatzsammlung ; Fjord ; Meeresgeologie ; Meeressediment ; Glaziomarines Sediment ; Erosion ; Antarktis ; Arktis ; Südpolarmeer ; Geomorphogenese ; Glazialerosion ; Glazialmorphologie ; Meeresgeologie ; Paläogeomorphologie
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource
    Series Statement: Geological Society Memoirs 46
    URL: http://mem.lyellcollection.org/content/46/1
    DOI: 10.1144/M46
    DDC: 551.31509168
    RVK:
    RY 20295
    Language: English
    Note: Dateiformat Volltext: PDF, abstracts
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  • 3
    Online Resource
    Online Resource
    Glacimarine environments : processes and sediments ; papers (1990)
    Details Availability
    Keywords: Konferenzschrift ; Meer ; Treibeis ; Glaziales Sediment ; Meeressediment ; Meereis ; Sediment ; Sedimenttransport ; Glaziales Sediment ; Glaziomarine Sedimentation
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (423 Seiten)
    Series Statement: Geological Society special publication 53
    URL: http://sp.lyellcollection.org/content/53/1
    DDC: 551.46083
    RVK:
    RB 10372
    Language: English
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  • 4
    Book
    Book
    Atlas of submarine glacial landforms: modern, Quaternary and ancient (2016)
    London : The Geological Society
    Details Availability
    Keywords: Glacial landforms ; Submarine topography ; Meeresboden ; Glaziallandschaft ; Glaziales Sediment
    Description / Table of Contents: "The Atlas presents over 180 contributions describing, illustrating and discussing the full variability of landforms found on the high-latitude glacier-influenced seafloor, from fjords and continental shelves to the continental slope, rise and deep-sea basins beyond."--
    Type of Medium: Book
    Pages: xix, 618 Seiten , Karten, Diagramme, Illustrationen , 32 cm
    ISBN: 9781786202680
    Series Statement: Geological Society memoir No. 46
    URL: http://mem.lyellcollection.org/content/46/1.toc
    DDC: 551.31509168
    RVK:
    RY 20295
    Language: English
    Note: Cumulated bibliography pages [575] - 611 , Geographical index pages [612] - 614 , Introduction -- Acoustic methods -- Fjords: landforms -- Fjords: landform assemblages -- Continental shelf: landforms -- Continental shelf: landform assemblages -- Continental slope: landforms -- Fjord-shelf-slope: landsystems -- Conclusion -- Glossary, cumulated bibliography and index
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  • 5
    Online Resource
    Online Resource
    Glacier-influenced sedimentation on high-latitude continental margins (2002)
    Details Availability
    Keywords: Drift Congresses ; Glacial landforms Congresses ; Sedimentation and deposition Congresses ; Continental margins Congresses ; Aufsatzsammlung ; Kontinentalrand ; Glaziallandschaft ; Glaziomarine Sedimentation ; Glazialmorphologie ; Glaziales Sediment ; Sedimentation ; Stratigraphie ; Arktis ; Gletscher
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (VI, 378 Seiten)
    ISBN: 1862391203
    Series Statement: Geological Society special publication 203
    URL: http://sp.lyellcollection.org/content/203/1
    URL: https://external.dandelon.com/download/attachments/dandelon/ids/DE0119C9D580F59237424C125738A002C3A83.pdf
    DDC: 551.313
    RVK:
    TF 7300
    Language: English
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  • 6
    Electronic Resource
    Electronic Resource
    Mapping seabird nesting habitats in Franz Josef Land, Russian High Arctic, using digital Landsat Thematic Mapper imagery (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 17 (1998), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Supervised classification of digital Landsat satellite images was used to locate seabird nesting habitats in the Russian High Arctic archipelago of Franz Josef Land, a region where the avifauna is poorly known and ecologically vulnerable. Major seabird nesting colonies are readily identifiable in Landsat Thematic Mapper (TM) imagery of the region due primarily to the distinctive spectral signature of vegetation on ornithogenically altered soils below bird cliffs. Supervised image classification was used to pinpoint areas displaying spectral characteristics typical of documented seabird nesting habitats. A total of 101 seabird nesting colony locations identified in Russian and Western literature from 1898 to 1996 was used as training sites to develop spectral signatures from a summer TM image mosaic for use in a supervised maximum likelihood classification. The classified image was thresholded and compared to a map of documented nesting locations. Of the 101 field-documented nesting sites, 96 were clearly identified in the classified image. An inventory was produced of all undocumented seabird habitats suggested by the classification, totalling over 300 sites. The methodology used may be applicable to other arctic regions and is intended as a first step when planning ecological protection zones in remote and inaccessible arctic regions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1998.tb00256.x
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  • 7
    Electronic Resource
    Electronic Resource
    On the glaciology of Edgeøya and Barentsøya, Svalbard (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 14 (1995), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: The ice masses on Edgeøya and Barentsøya are the least well known in Svalbard. The islands are 42-47% ice covered with the largest ice cap, Edgeøyjøkulen, 1365 km2 in area. The tidewater ice cliffs of eastern Edgeøya are over 80 km long and produce small tabular icebergs. Several of the ice-cap outlet glaciers on Edgeøya and Barentsøya are known to surge, and different drainage basins within the ice caps behave as dynamically separate units. Terminus advances during surging have punctuated more general retreat from Little Ice Age moraines, probably linked to Twentieth Ceutury climate warming and mass balance change. Airborne radio-echo sounding at 60 MHz along 340 km of flight track over the ice masses of Edgeøya and Barentsøya has provided ice thickness and elevation data. Ice is grounded below sea level to about 20 km inland from the tidewater terminus of Stonebreen. Ice thickens from 〈100 m close to the margins, to about 250 m in the interior of Edgeøyjøkulen. The maximum ice thickness measured on Barentsjøkulen was 270 m. Landsat MSS images of the two islands, calibrated to in-band reflectance values, allow synoptic examination of snowline position in late July/early August. Snow and bare glacier ice were identified, and images were digitally stretched and enhanced. The snowline was at about 300 m on the east side of Edgeøyjøkulen, and 50-100 m higher to the west. Snowlines were at approximately 450 m on Digerfonna and Storskalven. On Barentsjøkulen the snowline was 350 m above sea level on the eastern flank and over 400 m on the west. This asymmetry suggests greater precipitation on the east side of the ice caps. Enhanced Landsat imagery was also used to identify suspended sediments in the waters offshore of the islands. Where this turbid meltwater emerges from tidewater glacier termini, it is likely to be derived from the subglacial drainage system. This suggests that at least parts of the beds of the ice masses on Edgeøya and Barentsøya are at the pressure melting point, and that a basal hydrological system is present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1995.tb00684.x
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  • 8
    Electronic Resource
    Electronic Resource
    A surge of Perseibreen, Svalbard, examined using aerial photography and ASTER high resolution satellite imagery (2003)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 22 (2003), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: The identification of surge activity is important in assessing the duration of the active and quiescent phases of the surge cycle of Svalbard glaciers. Satellite and aerial photographic images are used to identify and describe the form and flow of Perseibreen, a valley glacier of 59 km2 on the east coast of Spitsbergen. Heavy surface crevassing and a steep ice front, indicative of surge activity, were first observed on Perseibreen in April 2002. Examination of high resolution (15 m) Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) satellite imagery confirmed this surge activity. Perseibreen retreated by almost 750 m between 1961 and 1990. Between 1990 and the summer of 2000, Perseibreen switched from retreat and its front began to advance. Rapid advance was underway during the period June 2000 to May 2001, with terminus advance at over 400 m yr−1. Between May and August 2001 the rate increased to over 750 m yr−1. The observed crevasse orientation indicates that ice was in longitudinal tension, suggesting the down-glacier transfer of mass. Ice surface velocities, derived from image correlation between ASTER images, were 2-2.5 m d−1 between May and August 2001. The glacier was flowing at a relatively uniform speed with sharp velocity gradients located close to its lateral margins, a velocity structure typical of ice masses in the active phase of the surge cycle. The stress regime is extensional throughout and the surge appears to be initiated low on the glacier. This is similar to the active-phase dynamics of other Svalbard tidewater glaciers. Perseibreen has probably been inactive since at least 1870, a period of about 130 years to the present surge which defines a minimum length for the quiescent phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.2003.tb00118.x
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  • 9
    Electronic Resource
    Electronic Resource
    The size and frequency of icebergs and bergy bits derived from tidewater glaciers in Kongsfjorden, northwest Spitsbergen (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 11 (1992), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Tidewater glaciers constitute over 1000 or 20% of the coast of Svalbard. The dimensions and frequency of the occurrence of icebergs and bergy bits produced from these tidewater glaciers in Kongsfjorden, northwest Spitsbergen, were measured during the summers of 1991 and 1992. In 1991, 35-40% of 275 observed icebergs and bergy bits were 〈0.5 m wide, and 〈10% exceeded 5 m in width. 70-80% of the freeboard measurements were 〈0.5 m and only 10–15% were 〉1 m in height. The largest observed freeboard was 6 m. In 1992, small icebergs were significantly less common. 50% of the observed icebergs were 〉 10 m in width and 〉2 m in freeboard. This is interpreted to be the result of a major calving event prior to the 1992 observations. Side-scan sonar data on sea floor morphology showed frequent scouring by iceberg keels to a depth of 35 m, but no scouring below 40 m, thus defining the maximum iceberg keel depth and the depth to which sediment reworking by these keels occurs. Calculations of the melt rate of icebergs allows an estimation of the life expectancy of icebergs calved into Kongfjorden. Melting by forced convection lies between approximately 0.1 and a maximum of 1.0 m d−1, depending on iceberg relative velocity, size and water temperature. Melting linked to wave action is also approximately 0.5-1.0 m d−1. These calculations imply that icebergs of the dimensions commonly observed in Kongsfjorden will seldom survive travelling beyond the fjord mouth. Radar observations of iceberg occurrence from FS POLARSTERN during its summer 1991 circumnavigation of Svalbard also showed that no larger icebergs were escaping beyond the mouths of the major fjords of western and northern Spitsbergen. Iceberg derivation from Spitsbergen fjords is therefore not likely to be an important mechanism for sediment rafting and deposition on the continental shelf and in the deep ocean, but it is of significance to local fjord sedimentation. Comparison with evidence on iceberg dimensions from the Barents Sea and an East Greenland fjord shows that the larger icebergs there are derived from parent ice masses with quite different characteristics than those calving into the Spitsbergen fjords.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1992.tb00414.x
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  • 10
    Electronic Resource
    Electronic Resource
    Remote sensing of ice cap outlet glacier fluctuations on Nordaustlandet, Svalbard (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 4 (1986), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: Landsat multispectral scanner images and 1:50, 000 scale aerial photographs are used to measure marginal fluctuations in 22 outlet glaciers of the Nordaustlandet ice caps, Svalbard, for all or parts of the period 1969 to 1981. Little was previously known about the behaviour of these glacier termini. Digital analysis of Landsat computer compatible tapes yielded measurement errors of less than ±150m, whereas data extracted from aerial photographs had an accuracy of ±25 m. Of the 22 glacier termini examined using aerial photographs, 15 were retreating, four were static and three were advancing. Retreat was usually in the order of hundreds of metres during the period of observation. For any outlet glacier, retreat was probably a result of either (1) glacier response to climatic wanning since the early part of the 20th century, or (2) stagnation and thinning during the quiescent period between surges. Short term iceberg calving events may also be responsible for retreat in a few cases. All observed outlet glaciers of Austfonna were static or retreating between 1969 and 1981, but analysis of Landsat imagery and aerial photographs showed that five outlet glaciers from Vestfonna and one from Vegafonna were advancing for all or part of that period. Bodleybreen advanced by a mean of 440 and a maximum of 580m a−1 between 1976 and 1981. Bodleybreen, Søre Rijpbreen, and Palanderbreen are identified as surging, based on increases or changes in the pattern of surface crevassing. The ice streams Aldousbreen, Frazerbreen, and Idunbreen also advanced between 1976 and 1981, but surface crevasse patterns remained largely unaltered and surging is not inferred.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1986.tb00515.x
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