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  • Albite; Alpha spectrometry quadratic propagation; Amphibole; Arctic Ocean; Caesium-137, activity per mass; Caesium-137, uncertainty; Calcite; Chlorite; chronology; Density, dry bulk; Density, dry bulk, uncertainty; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dolomite; Dry mass; Dry mass, standard deviation; estuaries; Gamma spectrometry quadratic propagation; GCUWI; Gravity corer, UWITEC; Halite; Illite; Kaolinite; Lagoon; Lead-210, uncertainty; Lead-210 activity per mass; Lead-210 excess; Lead-210 excess, uncertainty; marine sediments; Mass per area; Mass per area, standard deviation; Microcline; mineralogy; Nearshore; Permafrost coasts; Pyrite, FeS2; Pyroxene; Quadratic propagation; Quartz; Radium-226, uncertainty; Radium-226 activity per mass; Sample code/label; Section; Size fraction 〈 0.002 mm, clay; Size fraction 〈 0.002 mm, clay, standard deviation; Size fraction 0.002-0.00063 mm; Size fraction 0.002-0.00063 mm, standard deviation; Size fraction 1.000-0.063 mm; Size fraction 1.000-0.063 mm, standard deviation; Smectite; YC18_HB_GCO1  (1)
  • Arctic; Coastal erosion; Nearshore zone; organic carbon; Permafrost  (1)
Document type
Keywords
Publisher
Years
  • 1
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    Unknown
    Biogeochemistry of suspended particulate matter and sediment from the nearshore zone of Herschel Island, Canada (2020)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Description: Collapse of permafrost coasts delivers large quantities of particulate organic carbon (POC) to arctic coastal areas. The objective of this study is to assess the pathways and fate of POC derived from thawing and eroding permafrost coasts in the nearshore zone, to better understand its impact on the carbon cycle and climate. We collected suspended particulate matter and sediment samples at the coastline and in the nearshore zone of Herschel Island - Qikiqtaruk (N 69.60°; W 139.00°) during a two‐week period in July‐August 2017. Locations were labelled A - H clockwise around the island, starting at the NE corner (Collinson Head). Samples were taken in transects perpendicular to the coast, at point locations offshore ('Monitoring point 1 - 3'), and from 'thaw streams', creeks carrying material from retrogressive thaw slumps and other abrupt thaw features, at various locations around the island. A total of 49 locations were visited; 12 at thaw streams, and 37 in the nearshore zone ranging from right at the shoreline to up to 20 m water depth (about 2 km offshore). We performed biogeochemical analyses (CN, δ13C, Δ14C) and sedimentological analyses (grain size, mineral surface area) in order to trace the pathway of permafrost material from its source to the nearshore water column and sediments.
    Keywords: Arctic; Coastal erosion; Nearshore zone; organic carbon; Permafrost
    Type: dataset publication series
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Sediment structure and deposition rates of sediment core YC18 HB GCO1 (2021)
    PANGAEA
    Details
    Publication Date: 2024-07-19
    Keywords: Albite; Alpha spectrometry quadratic propagation; Amphibole; Arctic Ocean; Caesium-137, activity per mass; Caesium-137, uncertainty; Calcite; Chlorite; chronology; Density, dry bulk; Density, dry bulk, uncertainty; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Dolomite; Dry mass; Dry mass, standard deviation; estuaries; Gamma spectrometry quadratic propagation; GCUWI; Gravity corer, UWITEC; Halite; Illite; Kaolinite; Lagoon; Lead-210, uncertainty; Lead-210 activity per mass; Lead-210 excess; Lead-210 excess, uncertainty; marine sediments; Mass per area; Mass per area, standard deviation; Microcline; mineralogy; Nearshore; Permafrost coasts; Pyrite, FeS2; Pyroxene; Quadratic propagation; Quartz; Radium-226, uncertainty; Radium-226 activity per mass; Sample code/label; Section; Size fraction 〈 0.002 mm, clay; Size fraction 〈 0.002 mm, clay, standard deviation; Size fraction 0.002-0.00063 mm; Size fraction 0.002-0.00063 mm, standard deviation; Size fraction 1.000-0.063 mm; Size fraction 1.000-0.063 mm, standard deviation; Smectite; YC18_HB_GCO1
    Type: dataset
    Format: text/tab-separated-values, 1272 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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