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  • 1
    Electronic Resource
    Electronic Resource
    Coastal erosion vs riverine sediment discharge in the Arctic Shelf seas (2000)
    Springer
    International journal of earth sciences 89 (2000), S. 450-460 
    Details
    ISSN: 1437-3262
    Keywords: Laptev Sea Beaufort Sea Coastal erosion Fluvial sediment discharge Sediment budget
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract. This article presents a comparison of sediment input by rivers and by coastal erosion into both the Laptev Sea and the Canadian Beaufort Sea (CBS). New data on coastal erosion in the Laptev Sea, which are based on field measurements and remote sensing information, and existing data on coastal erosion in the CBS as well as riverine sediment discharge into both the Laptev Sea and the CBS are included. Strong regional differences in the percentages of coastal erosion and riverine sediment supply are observed. The CBS is dominated by the riverine sediment discharge (64.45×106 t a–1) mainly of the Mackenzie River, which is the largest single source of sediments in the Arctic. Riverine sediment discharge into the Laptev Sea amounts to 24.10×106 t a–1, more than 70% of which are related to the Lena River. In comparison with the CBS, the Laptev Sea coast on average delivers approximately twice as much sediment mass per kilometer, a result of higher erosion rates due to higher cliffs and seasonal ice melting. In the Laptev Sea sediment input by coastal erosion (58.4×106 t a–1) is therefore more important than in the CBS and the ratio between riverine and coastal sediment input amounts to 0.4. Coastal erosion supplying 5.6×106 t a–1 is less significant for the sediment budget of the CBS where riverine sediment discharge exceeds coastal sediment input by a factor of ca. 10.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005310000113
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Changes in the deposition of terrestrial organic matter on the Laptev Sea shelf during the Holocene: evidence from stable carbon isotopes (2000)
    Springer
    In:  International Journal of Earth Sciences, 89 (3). pp. 563-568.
    Details
    Publication Date: 2019-09-23
    Description: Stable carbon isotope ratios in the organic fraction of surface sediments from the Laptev Sea shelf were analyzed in order to study the modern distribution pattern of terrestrial organic matter. The delta C-13 signature of the surface sediments range from -26.6 parts per thousand near the coastal margin to -22.8 parts per thousand in the north towards the outer shelf. Characterizing the possible sources of organic matter by their delta C-13(org) signature reveals that the terrestrial influence reaches further north in the eastern than in the western Laptev Sea. Downcore records of the delta C-13(org), measured on three AMS C-14-dated cores from water depths between 46 and 77 m, specify the spatial and temporal changes in the deposition of terrestrial organic matter on the Laptev Sea shelf during the past 12.7 ka. The major depositional changes of terrestrial organic matter occurred between 11 and 7 ka and comprised the main phase of the southward retreat of the coastline and of the river depocenters due to the postglacial sea level rise.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s005310000128
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
    facet.materialart.
    Unknown
    Coastal erosion vs riverine sediment discharge in the Arctic Shelf seas (2000)
    Springer
    In:  International Journal of Earth Sciences, 89 (3). pp. 450-460.
    Details
    Publication Date: 2019-09-23
    Description: This article presents a comparison of sediment input by rivers and by coastal erosion into both the Laptev Sea and the Canadian Beaufort Sea (CBS). New data on coastal erosion in the Laptev Sea, which are based on field measurements and remote sensing information, and existing data on coastal erosion in the CBS as well as riverine sediment discharge into both the Laptev Sea and the CBS are included. Strong regional differences in the percentages of coastal erosion and riverine sediment supply are observed. The CBS is dominated by the riverine sediment discharge (64.45x10(6) t a(-1)) mainly of the Mackenzie River, which is the largest single source of sediments in the Arctic. Riverine sediment discharge into the Laptev Sea amounts to 24.10x10(6) t a(-1), more than 70% of which an related to the Lena River. In comparison with the CBS, the Laptev Sea coast on average delivers approximately twice as much sediment mass per kilometer, a result of higher erosion rates due to higher cliffs and seasonal ice melting. Ln the Laptev Sea sediment input by coastal erosion (58.4x10(6) t a(-1)) is therefore more important than in the CBS and the ratio between riverine and coastal sediment input amounts to 0.4. Coastal erosion supplying 5.6x10(6) t a(-1) is less significant for the sediment budget of the CBS where riverine sediment discharge exceeds coastal sediment input by a factor of ca. 10.
    Type: Article , PeerReviewed
    Format: text
    DOI: 10.1007/s005310000113
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    OceanRep: Article in a Scientific Journal - peer-reviewed
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