LOGIN TO YOUR ACCOUNT

Username
Password
Remember Me
Or use your Academic/Social account:

CREATE AN ACCOUNT

Or use your Academic/Social account:

Congratulations!

You have just completed your registration at OpenAire.

Before you can login to the site, you will need to activate your account. An e-mail will be sent to you with the proper instructions.

Important!

Please note that this site is currently undergoing Beta testing.
Any new content you create is not guaranteed to be present to the final version of the site upon release.

Thank you for your patience,
OpenAire Dev Team.

Close This Message

CREATE AN ACCOUNT

Name:
Username:
Password:
Verify Password:
E-mail:
Verify E-mail:
*All Fields Are Required.
Please Verify You Are Human:
fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Hagen, Jon Ove; Sætrang, Arne (1991)
Publisher: Co-Action Publishing
Journal: Polar Research
Languages: English
Types: Article
Subjects:
Air-borne radio-echo soundings of sub-polar glaciers in Svalbard have previously been carried out by Soviet scientists using high frequency radar units of 620 and 440 MHz. Later a British/Norwegian group made soundings with 60 MHz equipment. The high frequency radar units seemed to underestimate the ice thicknesses. The 60 MHz radar unit seemed to give more accurate results when compared to areas with gravity surveyed bed. However, both the Soviet and the British equipment seldom recorded bed-echoes in accumulation areas where firn soaking during summer and thus zero temperatures are likely to occur. A low-frequency impulse radar unit of 8 MHz, however, recorded bed echoes in these areas too. In the accumulation area of Kongsvegen depths down to 440 m were recorded. The glacier bed is thus close to sea level at approximately 12 km from the calving front. Soundings were carried out on Brøggerbreen. Lovenbreen and Kongsvegen. Subglacial maps were generated from the data. Internal reflections that were probably caused by englacial drainage channels could be observed. Frequent internal reflections close to the bed could be interpreted as an indication of temperate ice. However, we could not find any distinct upper level of these reflections.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • Bamber, J. L. 1987a: Radioecho sounding studies of Svalbard glaciers. Unpublished Ph.D. thesis, Jesus College. University of Cambridge.
    • Bamber, J. L. 1987b: Internal reflecting horizons in Spitsbergen Glaciers. Annals og Glaciology 9, 5-10.
    • Bamber, J. L. 1988: Enhanced radar scattering from water inclusions in ice. Journal of Glaciology 34(118). 293-296.
    • Bamber, J. L. 1989: Ice/bed interface and englacial properties of Svalbard ice masses deduced from airborne radio-echo sounding data. Journal of Glaciology 35(119), 3C-37.
    • Bjbrnsson. H. 1981: Radio-echo sounding maps of Storglaciaren, IsfAlsglaciaren og Rabots glaciar, northern Sweden. Geogr. Ann. 63 A (3-4),225-231.
    • Bj~rnsson,H. 1986: Surface and bedrock topography of ice caps in Iceland mapped by radio-echo soundings. Annals of Glaciology 8 , 11-18.
    • Dowdeswell, J. A , , Drewry, D. J., LiestQI. 0. & Orheim. 0. 1984a: Airborne radio echo sounding of sub-polar glaciers in Spitsbergen. Norsk Polarinsrirufr, Skrifter nr. 182. 41pp.
    • Dowdeswell, J. A,, Drewry, D. J., Liestel, 0. & Orheim, 0. 1984b: Radio-echo sounding of Spitsbergen glaciers: problems in the interpretation of layer and bottom returns. Journal of Glaciology 30(104), 16-21.
    • Haeberli, W. & Fisch, W. 1984: Electrical resistivity soundings of glacier beds: a test study on Grubengletscher, Wallis, Swiss Alps. Journal of Glaciology 30(106), 373-376.
    • Liestbl, 0.1976: Pingos, springs and permafrost in Spitsbergen. Norsk Polarinstiturr Arbok 1975, 7-29.
    • Macheret, Y. Y. 1976: Some results of radio echo sounding of the glaciers of Spitsbergen in 1974. Materiuly Glyatsiologicheskikh Issledonaoiy. Khronika. Obsuzhdeniva Vol. 26, 158-164.
    • Macheret, Y. Y. & Zhuravlev, A . B. 1982: Radio-echo sounding of Svalbard Glaciers. Journal of Glaciology 28(99),295- 314.
    • Smith, B. M. E. & Evans, S. 1972: Radio-echo sounding: absorption and scattering by water inclusions and ice lenses. Journal of Glaciology 11 ( S I ) , 133-146.
    • Sverdrup, H. V. 1935: The temperature of the firn of Isachsen's Plateau and general conclusions regarding the temperatures of the glaciers of West-Spitsbergen. Geografiska Annaler 17. 53-58.
    • Sverrisson,M., Johannesson, A. & Bjbrnsson, H. 1980: Radioecho equipment for depth sounding of temperate glaciers. Journal of Glaciology 25(93),477-486.
    • Sztrang, A. C . & Wold, B. 1986: Results from the radio-echo sounding on parts of the Jostedalsbreen ice cap, Norway. Annals of Glaciology 8, 156158.
  • No related research data.
  • No similar publications.

Share - Bookmark

Cite this article

Collected from