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  • GRASP; GReenland Analogue Surface Project; Kangerl_WGreenl_TBL; Two Boat Lake, Kangerlussuaq, Greenland  (2)
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  • 1
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    Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland, link to shapefiles
    PANGAEA
    In:  Supplement to: Petrone, Johannes; Sohlenius, Gustav; Johansson, Emma; Lindborg, Tobias; Näslund, Jens-Ove; Strömgren, Mårten; Brydsten, Lars (2016): Using ground-penetrating radar, topography and classification of vegetation to model the sediment and active layer thickness in a periglacial lake catchment, Western Greenland. Earth System Science Data, 8(2), 663-677, https://doi.org/10.5194/essd-8-663-2016
    Details
    Publication Date: 2023-05-12
    Description: The geometries of a catchment constitute the basis for distributed physically based numerical modeling of different geoscientific disciplines. In this paper results from ground-penetrating radar (GPR) measurements, in terms of a 3-D model of total sediment thickness and active layer thickness in a periglacial catchment in western Greenland, are presented. Using the topography, the thickness and distribution of sediments are calculated. Vegetation classification and GPR measurements are used to scale active layer thickness from local measurements to catchment-scale models. Annual maximum active layer thickness varies from 0.3 m in wetlands to 2.0 m in barren areas and areas of exposed bedrock. Maximum sediment thickness is estimated to be 12.3 m in the major valleys of the catchment. A method to correlate surface vegetation with active layer thickness is also presented. By using relatively simple methods, such as probing and vegetation classification, it is possible to upscale local point measurements to catchment-scale models, in areas where the upper subsurface is relatively homogeneous. The resulting spatial model of active layer thickness can be used in combination with the sediment model as a geometrical input to further studies of subsurface mass transport and hydrological flow paths in the periglacial catchment through numerical modeling.
    Keywords: GRASP; GReenland Analogue Surface Project; Kangerl_WGreenl_TBL; Two Boat Lake, Kangerlussuaq, Greenland
    Type: Dataset
    Format: application/zip, 2.4 MBytes
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    DATA PANGAEA
  • 2
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    Hydrological and meteorological investigations in a lake near Kangerlussuaq, west Greenland (2014)
    PANGAEA
    In:  Supplement to: Johansson, Emma; Berglund, Sten; Lindborg, Tobias; Petrone, Johannes; van As, Dirk; Gustafsson, Lars-Göran; Näslund, Jens-Ove; Laudon, Hjalmar (2015): Hydrological and meteorological investigations in a periglacial lake catchment near Kangerlussuaq, west Greenland – presentation of a new multi-parameter data set. Earth System Science Data, 7(1), 93-108, https://doi.org/10.5194/essd-7-93-2015
    Details
    Publication Date: 2023-10-18
    Description: Few hydrological studies have been made in Greenland, other than on glacial hydrology associated with the ice sheet. Understanding permafrost hydrology and hydroclimatic change and variability, however, provides key information for understanding climate change effects and feedbacks in the Arctic landscape. This paper presents a new extensive and detailed hydrological and meteorological open access dataset, with high temporal resolution from a 1.56 km**2 permafrost catchment with a lake underlain by a through talik close to the ice sheet in the Kangerlussuaq region, western Greenland. The paper describes the hydrological site investigations and utilized equipment, as well as the data collection and processing. The investigations were performed between 2010 and 2013. The high spatial resolution, within the investigated area, of the dataset makes it highly suitable for various detailed hydrological and ecological studies on catchment scale.
    Keywords: GRASP; GReenland Analogue Surface Project; Kangerl_WGreenl_TBL; Two Boat Lake, Kangerlussuaq, Greenland
    Type: Dataset
    Format: application/zip, 5.5 MBytes
    Location Call Number Expected Availability
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    DATA PANGAEA
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