Journal cover Journal topic
Geographica Helvetica
Journal topic

Journal metrics

Journal metrics

  • CiteScore value: 0.86 CiteScore
    0.86
  • SNIP value: 0.526 SNIP 0.526
  • IPP value: 0.80 IPP 0.80
  • SJR value: 0.452 SJR 0.452
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 16 Scimago H
    index 16
  • h5-index value: 14 h5-index 14
Volume 65, issue 2
Geogr. Helv., 65, 92-102, 2010
https://doi.org/10.5194/gh-65-92-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geogr. Helv., 65, 92-102, 2010
https://doi.org/10.5194/gh-65-92-2010
© Author(s) 2010. This work is distributed under
the Creative Commons Attribution 3.0 License.

  30 Jun 2010

30 Jun 2010

Analysis of Alpine glacier length change records with a macroscopic glacier model

M. P. Lüthi and A. Bauder M. P. Lüthi and A. Bauder
  • Laboratory of Hydraulics, Hydrology and Glaciology (VAW), Swiss Federal Institute of Technology (ETH) Zurich, 8092 Zurich, Switzerland

Abstract. The length change record of 91 glaciers in the Swiss Alps was analyzed with a novel macroscopic glacier model (LV-model). Based on a history of equilibrium line variations, synthetic length change data were calculated. From the LV-models matching best the measured length changes, characteristic parameters were obtained. The volume time scale thus determined ranges from 5 to 170 years for glaciers of different slope and length. The analysis shows that the observed glacier length changes cannot be reproduced with an equilibrium line variation based on temperature and precipitation alone. The equilibrium line has to be lowered by 100 to 200 meters during several phases of the Little Ice Age (in the time span 1650 to 1850) to obtain observed glacier responses. Such an effect might be attributable to either higher winter precipitation in the Alps, or to radiation forcing.

Publications Copernicus
Download
Citation
Share