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Assessment of chemical denudation rates using hydrological measurements, water chemistry analysis and electromagnetic geophysical data

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  • Achim A. Beylich
  • Else Kolstrup
  • Niklas Linde
  • Laust B. Pedersen
  • Tage Thyrsted
  • Dorothea Gintz
  • Lars Dynesius

Abstract

Water chemistry and chemical denudation in relation to local environmental conditions were investigated in a drainage basin of approximately 9 km2 in northernmost Swedish Lapland (Latnjavagge). Discharge and surface water electric conductivity were measured over the summer of 2001 at selected sites. The chemical investigations show differences between sub‐areas and changes over the season as well as overall rates of chemical denudation. Transects within the catchment using a radio‐magnetotelluric geophysical method describe regolith thickness and ground frost conditions at the time of measurement. This combination of methods obtains information on the influence of regolith thickness and ground frost upon sub‐surface drainage and chemical denudation, not only along the profiles but also, by extension, on areas further upslope. In this paper the techniques are outlined and the approach demonstrated for three sub‐areas with different regolith thicknesses and thaw development. Copyright © 2003 John Wiley & Sons, Ltd.

Suggested Citation

  • Achim A. Beylich & Else Kolstrup & Niklas Linde & Laust B. Pedersen & Tage Thyrsted & Dorothea Gintz & Lars Dynesius, 2003. "Assessment of chemical denudation rates using hydrological measurements, water chemistry analysis and electromagnetic geophysical data," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 14(4), pages 387-397, October.
    • Handle: RePEc:wly:perpro:v:14:y:2003:i:4:p:387-397
    DOI: 10.1002/ppp.470
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