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Spatial Controls of Turf-Banked Solifluction Lobes and Their Role for Paraglacial Adjustment in Glacier Forelands

Title data

Draebing, Daniel ; Eichel, Jana:
Spatial Controls of Turf-Banked Solifluction Lobes and Their Role for Paraglacial Adjustment in Glacier Forelands.
In: Permafrost and Periglacial Processes. Vol. 28 (2017) Issue 2 . - pp. 446-459.
ISSN 1099-1530
DOI: https://doi.org/10.1002/ppp.1930

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
Biogeomorphic dynamics on lateral moraines in the Turtmann glacier foreland, SwitzerlandNo information

Project financing: Deutsche Forschungsgemeinschaft (DI 414/22-1)

Abstract in another language

Abstract In glacier forelands, solifluction is a major and fast-responding paraglacial process in the adjustment of low- or moderately-inclined moraine slopes. However, the spatial pattern of the factors that control solifluction and their interactions are poorly understood. In this study, we combine geomorphic and vegetation mapping, analysis of borehole material and time domain reflectometry with two-dimensional (2D) and three-dimensional (3D) electrical resistivity tomography (ERT) to quantify the controlling factors and evaluate their influence on sediment transport. The investigated turf-banked solifluction lobe is located on the distal slope of a 1920s lateral moraine in the foreland of the Turtmann glacier in the southern Swiss Alps. Our data demonstrate the interaction between material, soil moisture and vegetation, which results in geomorphometric features such as (i) frontal and lateral risers, (ii) a lobe tread and (iii) a ridge. Lobe size indicates intense solifluction movement in the last 100 years. The interaction of controlling factors results in a negative feedback which stabilises the lobe and, thus, limits paraglacial sediment transport to frost heave processes on the ridge. Copyright © 2016 John Wiley & Sons, Ltd.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Glacier foreland; Paraglacial; Biogeomorphology; Solifluction; Vegetation effects; Electrical resistivity tomography (ERT)
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Geomorphology
Result of work at the UBT: No
DDC Subjects: 500 Science > 550 Earth sciences, geology
Date Deposited: 08 Apr 2019 10:02
Last Modified: 08 Apr 2019 10:02
URI: https://eref.uni-bayreuth.de/id/eprint/48601