Skip to main content Accessibility help
×
Home

Character of the Englacial and Subglacial Drainage System in the Upper Part of the Ablation Area of Storglaciären, Sweden

  • Roger Leb. Hooke (a1), Sarah B. Miller (a1) and Jack Kohler (a1)

Abstract

On 4 July 1986, dye was injected at a point slightly above the equilibrium line on Storglaciären, a small valley glacier in northern Sweden. Just below the equilibrium line, the glacier bed is over-deepened. The dye re-appeared in a stream at the glacier terminus over the next 35 d. This stream normally carries relatively little sediment, in constrast to the situation in another nearby stream that also emerges from the glacier. This suggests that the dye traveled in englacial rather than subglacial conduits. Tracer tests utilizing salt in bore holes in the overdeepening support this interpretation, as the bore holes were draining well above the bed. The dye appeared during three distinct events, suggesting that it became divided into at least three separate parcels shortly after injection. This probably occurred in the crevassed area in the vicinity of the injection point.

The englacial location of the drainage may be explained by the fact that, in order to remain at the pressure melting-point, water in subglacial conduits coming out of the overdeepening may have had to warm up faster than would be possible by viscous heating alone. Such conduits would thus tend to freeze closed.

  • View HTML
    • Send article to Kindle

      To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

      Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

      Find out more about the Kindle Personal Document Service.

      Character of the Englacial and Subglacial Drainage System in the Upper Part of the Ablation Area of Storglaciären, Sweden
      Available formats
      ×

      Send article to Dropbox

      To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

      Character of the Englacial and Subglacial Drainage System in the Upper Part of the Ablation Area of Storglaciären, Sweden
      Available formats
      ×

      Send article to Google Drive

      To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

      Character of the Englacial and Subglacial Drainage System in the Upper Part of the Ablation Area of Storglaciären, Sweden
      Available formats
      ×

Copyright

References

Hide All
Brand, G. Pohjola, V. Hooke, R.Leb. 1987 Evidence for a till layer beneath Storglaciären, Sweden, based on electrical resistivity measurements. Journal of Glaciology, 33(115), 31114.
Brugman, M.M. Unpublished. Water flow at the base of a surging glacier. (Ph.D. thesis, California Institute of Technology, Pasadena, 1986)
Iken, A. Bindschadler, R.A. 1986 Combined measurements of subglacial water pressure and surface velocity of Findelengletscher, Switzerland: conclusions about drainage system and sliding mechanism. Journal of Glaciology, 32(110), 10119.
Lliboutry, L. 1968 General theory of subglacial cavitation and sliding of temperate glaciers. Journal of Glaciology, 7(49), 2158.
Lliboutry, L. 1983 Modifications to the theory of intraglacial waterways for the case of subglacial ones. Journal of GIaciology, 29(102), 21626.
Röthlisberger, H. Lang, H. 1987 Glacial hydrology. In Gurnell, A.M., Clark, M.J., eds. Glacio–fluvial sediment transfer. New York, John Wiley and Sons, 20784.
Seaberg, S.Z. Seaberg, J.Z. Hooke, R.Leb. Wiberg, D.W. 1988 Character of the englacial and subglacial drainage system in the lower part of the ablation area of Storglaciären, Sweden, as revealed by dye–trace studies. Journal of Glaciology, 34(117), 21727.

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed