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  • 1985-1989  (7)
Document type
Publisher
Language
Years
Year
  • 1
    Book
    Book
    Glacial geology of the Northern Barents Sea, with emphasis on the surge related, ice proximal depositional environment (1988)
    Oslo
    Details Availability
    Type of Medium: Book
    Pages: Getrennte Zählung , 3 Karten-Beilagen
    Series Statement: Rapportserie Norsk Polarinstitutt$l47
    Language: English
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  • 2
    Electronic Resource
    Electronic Resource
    Iceberg scouring and sea bed morphology on the eastern Weddell Sea shelf, Antarctica (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 7 (1989), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: A detailed shallow seismic and side scan sonar study, combined with vibrocoring on the continental shelf off Riiser Larsenisen ice shelf, East Antarctica, has provided information on the different morphological patterns present in the area. Features related to the motion of grounded icebergs prevail, with relatively narrow iceberg plough marks being predominant. A‘washboard pattern’probably results from a wobbling motion of grounded, tabular icebergs under influence of direct push by the advancing ice shelf, and a hummocky disturbed sea bed morphology results from small scale sediment slumping, often triggered by iceberg action. Narrow, elongate depressions incise the sea floor sediments, which are composed of glacigenic diamictons. Formation of the depressions is not fully understood, but erosion by subglacial meltwater under an expanded East Antarctic ice sheet is a possibility, although this requires a different glacier thermal regime than that of the present-day. Although this study is restricted in area, the processes of the region are typical of the Antarctic continental shelf. The results may hence have a more regional significance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1989.tb00603.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Late Weichselian glaciation of the northern Barents Sea - a discussion (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 5 (1987), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1987.tb00551.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Submarine evidence of glacier surges (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
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1986.tb00524.x
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    A pockmark field in the Central Barents Sea; gas from a petrogenic source? (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 3 (1985), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: A pockmark field has been encountered in the northwestern Barents Sea, SO km southeast of Hopen island. High resolution seismic records and side scan sonographs show that the features are small (10–20 m diameter), shallow (〈1 m deep) structures that may cover up to 25% of the sea floor in local areas. Pockmark existence seem to be dependent on the presence of soft, Holocene mud. In more firm sea-floor they seem to concentrate in the partly infilled troughs of iceberg plough marks. The pockmark distribution, characteristics of the underlying sedimentary bedrock and thin cover of glacigenic sediments in the area, indicate they are formed by ascending gas from a deeper, probably petrogenic source. It is inferred that pockmarks may be found in larger parts of the Barents Sea.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1985.tb00492.x
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  • 6
    facet.materialart.
    Unknown
    Glaciomarine sedimentation in epicontinental seas exemplified by the northern Barents Sea (1989)
    Elsevier
    In:  Marine Geology, 85 (2-4). pp. 225-250.
    Details
    Publication Date: 2018-03-02
    Description: Sediments on high Arctic shelves result from modern processes and the effect of former glaciations. Based on data from the northern Barents Sea, an area with input from large and numerous surging glaciers, we define two principal zones with different environmental regimes and corresponding sedimentary facies: (1) a glacier-proximal zone influenced by grounding-line processes and the immediately adjacent areas affected by glacial sediment input, and (2) a glacier-distal, sea-ice and current-controlled zone, which also includes a wide sediment-starved region dominated by biogenic carbonate accumulation. Characteristic of the glacier-proximal zone are glacial surges which affect sedimentation rates and leave a diagnostic pattern of sea-floor morphologies. Extensive ice gouging causes a homogeneous sediment texture. In the glacier-distal zone, fine-grained mud supplied from sea ice and infrequent coarser material deposited from icebergs is reworked by modern oceanographic processes. On shallow banks, in 30–50 m of water, carbonates accumulate from a prolific bottom fauna formed in response to extensive reworking and nutrient supply.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0025-3227(89)90155-2
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 7
    facet.materialart.
    Unknown
    Subglacial meltwater discharge in the open-marine tidewater glacier environment: Observations from Nordaustlandet, Svalbard Archipelago (1989)
    Elsevier
    In:  Marine Geology, 86 (4). pp. 265-281.
    Details
    Publication Date: 2019-05-06
    Description: The ice-proximal environment of the Nordaustlandet tidewater ice cap, Svalbard Archipelago, is one of the best analogues for understanding glacial geologic processes of northern continental shelves during initial Pleistocene deglaciation. Investigations of the proglacial region in 1980–1983 showed that the sedimentary environment is dominated by numerous meltwater outflows which discharge sediment-laden water from subglacial meltwater streams during the summer. Two large, stable meltwater outflows were observed in embayments along the southern part of the ice front. Landsat images show that both outflows have been in approximately the same position since at least 1976. They are located at the intersection of glacial drainage basins and centered over depressions in the underlying bedrock. An “outflow valley” extending away from the ice front was observed in front of the western meltwater outflow. Sidescan sonar profiling along the glacier front showed a 200 m wide gap in acoustic reflection at the base of the western meltwater outflow, probably caused by meltwater effluence. Enhanced sediment accumulations in this region, observed as a ≈ 3 ms sediment drape in front of the outflow, and large arcuate ridges in the outflow valley, testify to the transport efficiency of the subglacial meltwater stream. Several mounds, up to about 25 m high and 200 m wide, are observed on sidescan and 3.5 kHz profiles directly in front of the outflow. Although samples from these structures are absent, they are most likely composed of sediment and are similar to beaded eskers observed in Pleistocene glacimarine sequences indicating locally very high sedimentation rates. Fine-grained components of the subglacial discharge incorporated in the buoyant meltwater plume are usually entrained in a westerly coastal current. Elevated suspended particulate material concentrations are observed within the coastal waters in a region extending about 15 km perpendicular to the glacier front and at least 60 km along the ice front extending into the northwestern Barents Sea.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1016/0025-3227(89)90089-3
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    OceanRep: Article in a Scientific Journal - peer-reviewed
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