ID:
publications-1767
Type:
Peer reviewed articles
Year:
2023
Authors:
Kneib, M., Fyffe, C. L., Miles, E. S., Lindemann, S., Shaw, T. E., Buri, P., Fugger, S., ā¦ Pellicciotti, F.
Title:
Ā Controls on ice cliff distribution and characteristics on debris-covered glaciers
Venue/Journal:
Geophysical Research Letters
DOI:
10.1029/2022gl102444
Research type:
Simulation & Modeling
Water System:
Wastewater Treatment Plants
Technical Focus:
Abstract:
AbstractIce cliff distribution plays a major role in determining the melt of debrisācovered glaciers but its controls are largely unknown. We assembled a data set of 37,537 ice cliffs and determined their characteristics across 86 debrisācovered glaciers within High Mountain Asia (HMA). We find that 38.9% of the cliffs are streamāinfluenced, 19.5% pondāinfluenced and 19.7% are crevasseāoriginated. Surface velocity is the main predictor of cliff distribution at both local and glacier scale, indicating its dependence on the dynamic state and hence evolution stage of debrisācovered glacier tongues. Supraglacial ponds contribute to maintaining cliffs in areas of thicker debris, but this is only possible if water accumulates at the surface. Overall, total cliff density decreases exponentially with debris thickness as soon as the debris layer reaches a thickness of over 10Ā cm.
Link with Projects:
772751
Link with Tools:
Related policies:
ID:
