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  • 1
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    Icebergs in the Amundsen Sea (Antarctica) determined from ENVISAT ASAR WSM data using object-based image analysis approach, link to ESRI GDB files (2016)
    PANGAEA
    In:  Supplement to: Mazur, Aleksandra Katarzyna; Wåhlin, Anna; Krężel, Adam (2017): An object-based SAR image iceberg detection algorithm applied to the Amundsen Sea. Remote Sensing of Environment, 189, 67-83, https://doi.org/10.1016/j.rse.2016.11.013
    Details
    Publication Date: 2023-01-13
    Description: An object-based method for automatic iceberg detection from Advanced Synthetic Aperture Radar (ASAR) images has been developed and applied in the Amundsen Sea, Antarctica. The automatic identification is based on brightness and spatial parameters of the ASAR images at five scale levels, and was verified with manual classification in four areas chosen to represent varying environmental conditions. The presented algorithm works comparatively well with images of the ocean in freezing temperatures and strong wind conditions, common in the Amundsen Sea. The detection rate was 96.2% which corresponds to 93.2% of the icebergs area, for all seasons. The algorithm generated 3.8% errors in the form of 'misses' and 7.0% of 'false alarms', mainly caused by the presence of ice floes. The method was applied on 432 radar images acquired in 2011 under different meteorological, oceanographic and sea ice conditions. As an output a map showing the probability of finding icebergs has been created. It shows that high probability coincides with depth contours and indicates a westward drift of the bergs throughout the whole region.
    Keywords: Amundsen_Sea
    Type: Dataset
    Format: application/zip, 18.9 MBytes
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Physical oceanography during Oden cruise OD1507 Petermann 2015 (2018)
    PANGAEA
    In:  Supplement to: Heuzé, Céline; Wåhlin, Anna; Johnson, Helen L; Münchow, Andreas (2017): Pathways of meltwater export from Petermann Glacier, Greenland. Journal of Physical Oceanography, 47(2), 405-418, https://doi.org/10.1175/JPO-D-16-0161.1
    Details
    Publication Date: 2024-02-27
    Description: CTD data collected during the Petermann2015 expedition (Oden cruise, OD1507) by C. Heuzé, J. Krützfeldt, A. Münchow, C. Stranne, C. Fröjd, P. Washam, R. Holden and A. Meiton. O2 only available from event 26 onwards.
    Keywords: Baffin Bay; CTD, Sea-Bird, SBE 911plus, measured with Conductivity sensor, Sea-Bird, SBE 4C; CTD, Sea-Bird, SBE 911plus, measured with Temperature sensor, Sea-Bird, SBE3plus; CTD, Sea-Bird, SBE 911plus; measured with Dissolved oxygen sensor, Sea-Bird, SBE 43; CTD, Sea-Bird SBE 911plus; CTD/Rosette; CTD-RO; Date/Time of event; DEPTH, water; Elevation of event; Event label; Latitude of event; Longitude of event; OD1507; OD1507-002; OD1507-003; OD1507-004; OD1507-005; OD1507-006; OD1507-007; OD1507-008; OD1507-009; OD1507-010; OD1507-011; OD1507-012; OD1507-013; OD1507-014; OD1507-015; OD1507-016; OD1507-017; OD1507-018; OD1507-019; OD1507-020; OD1507-021; OD1507-022; OD1507-023; OD1507-024; OD1507-026; OD1507-027; OD1507-028; OD1507-029; OD1507-030; OD1507-031; OD1507-032; OD1507-033; OD1507-034; OD1507-035; OD1507-036; OD1507-037; OD1507-038; OD1507-039; OD1507-040; OD1507-041; OD1507-042; OD1507-043; OD1507-044; OD1507-045; OD1507-046; Oden; Original value; Oxygen; Petermann2015; Recalculated from ml/l by using (ml/l)*44.66; Salinity; Temperature, water, potential
    Type: Dataset
    Format: text/tab-separated-values, 331298 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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