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Dynamics of rock glaciers of the Northern Tien Shan and the Djungar Ala Tau, Kazakhstan

Author

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  • Aldar P. Gorbunov
  • Sergei N. Titkov
  • Victor G. Polyakov

Abstract

Over 1500 active rock glaciers have been identified in the Northern Tien Shan and the Djungar Ala Tau, Kazakhstan. Studies of the dynamics of six near‐glacier rock glaciers for 15–60 years show rates of movement in the main body of the rock glacier of 0.16–14.0 m/y. These also vary with time. Factors involved include climatic change, changes in ice content in the source area, flow of glacial meltwater through the rock glacier, changes in gradient of the underlying surface and changes in width of the valley through which it moves. Plus de 1500 glaciers rocheux actifs ont été reconnus dans le Tien Shan septentrional et le Djungar Ala Tau, au Kazakhstan. Des études de la dynamique de six glaciers rocheux pendant 15 à 60 ans montrent des vitesses de déplacement de la masse principale du glacier rocheux de 0.16 à 14.0 m par an. Ces vitesses varient aussi avec le temps. Les facteurs contrǒlant les mouvements comprennent les modifications de climat, des variations de contenu en glace dans la zone de formation du glacier rocheux, l'écoulement de l'eau de fonte glaciaire au travers du glacier rocheux, des changements dans la pente de la surface inférieure et des variations de la largeur de la vallée au sein de laquelle le glacier rocheux se déplace.

Suggested Citation

  • Aldar P. Gorbunov & Sergei N. Titkov & Victor G. Polyakov, 1992. "Dynamics of rock glaciers of the Northern Tien Shan and the Djungar Ala Tau, Kazakhstan," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 3(1), pages 29-39, January.
    • Handle: RePEc:wly:perpro:v:3:y:1992:i:1:p:29-39
    DOI: 10.1002/ppp.3430030105
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