RT Journal Article
T1 Slow dynamics in debris-covered and rock glaciers in Hofsdalur, Tröllaskagi Peninsula (northern Iceland)
A1 Campos, Néstor
A1 Zamorano León, José Javier
A1 Tanarro García, Luis Miguel
A1 Palacios Estremera, David
AB The results of previous work on the dynamics of the debris-covered and rock glaciers in Tröllaskagi are contradictory. To improve our knowledge of these dynamics and determine the origin and evolution of these landforms, we analyzed two case studies located in the Hofsdalur Valley: the Hofsjökull debris-covered glacier and the Júllogil rock glacier, using digital photogrammetry combined with GIS techniques. Our most accurate results were obtained for the period 1980–1994 as follows: for the Hofsjökull debris-covered glacier a mean block displacement velocity of 0.22 m yr−1, a block elevation difference of −0.36 m and a horizontal displacement of linear ridges of 0.21 m yr−1; for the Júllogil rock glacier a mean block displacement velocity of 0.15 m yr−1, a block elevation difference of −0.63 m and a horizontal displacement of linear ridges of 0.16 m yr−1. The limits of these glaciers remained stable for ~70 years, from 1946 to 2017. All our data support the fact that these landforms are stable, and having lost their ice accumulation sources, their dynamics are fundamentally related to subsidence processes. Therefore, they are relict landforms whose origin seems to be related to paraglacial processes after rapid deglaciation of the valleys, and their stagnated ice is preserved, as it is above the permafrost level.
SN 0169-555X
YR 2019
FD 2019
LK https://hdl.handle.net/20.500.14352/99855
UL https://hdl.handle.net/20.500.14352/99855
LA eng
NO Campos, N., Zamorano León, J. J., Tanarro García, L. M. et al. «Slow Dynamics in Debris-Covered and Rock Glaciers in Hofsdalur, Tröllaskagi Peninsula (Northern Iceland)». Geomorphology, vol. 342, octubre de 2019, pp. 61-77. DOI.org (Crossref), https://doi.org/10.1016/j.geomorph.2019.06.005.
NO Ministerio de Economía, Comercio y Empresa (España)
NO Nils Mobility Program
DS Docta Complutense
RD 11 abr 2025