2026-05-25T12:37:55Zhttp://doidb.wdc-terra.org/oaip/oai

oai:doidb.wdc-terra.org:77962023-12-20T14:38:39ZDOIDBDOIDB.GFZ

false4DOIDB.GFZ 10.5880/GFZ.3.3.2023.002 Wetterauer, Katharina Katharina Wetterauer 0000-0002-2937-5856 GFZ German Research Centre for Geosciences, Potsdam, Germany Scherler, Dirk Dirk Scherler 0000-0003-3911-2803 GFZ German Research Centre for Geosciences, Potsdam, Germany Institute of Geographical Sciences, Freie Universität Berlin, Berlin, Germany GFZ Data Services 2023 Alpine glaciers medial moraines cosmogenic 10Be rockwall erosion rates supraglacial debris glacier surface velocities boulder tracking EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > CHEMICAL CONCENTRATIONS EARTH SCIENCE > SOLID EARTH > GEOCHEMISTRY > GEOCHEMICAL PROPERTIES > ISOTOPES EARTH SCIENCE > SOLID EARTH > GEOMORPHIC LANDFORMS/PROCESSES > GLACIAL LANDFORMS > MORAINES > MEDIAL MORAINE Wetterauer, Katharina GFZ German Research Centre for Geosciences, Potsdam, Germany Scherler, Dirk GFZ German Research Centre for Geosciences, Potsdam, Germany; Institute of Geographical Sciences, Freie Universität Berlin, Berlin, Germany Dataset 10.1016/j.nimb.2012.04.030 10.1016/0012-821X(91)90220-C https://map.geo.admin.ch 10.1029/2003JF000049 10.1002/esp.5386 10.5880/GFZ.3.3.2021.007 GFKW10019 GFKW1001A GFKW1001B GFKW1001C GFKW1001D GFKW1001H GFKW1001J GFKW1001K GFKW1001L GFKW1001M GFKW1001N GFKW1001E GFKW1001F GFKW1001G GFKW1001P GFKW1001Q GFKW1001R GFKW1001S GFKW1001T GFKW1001U GFKW1001V GFKW1001W GFKW1001X GFKW1001Y 10.5194/esurf-11-1013-2023 CC BY 4.0 At valley glaciers, rockwall erosion supplies debris to glacier surfaces. Once deposited on the ice, rockwall debris is passively entrained and becomes part of the glacial system, e.g., forming medial moraines as downglacier transport continues. Where debris occurs supraglacial, it modifies ice ablation and, thus, changes in rockwall erosion and debris supply rates modify glacial debris cover and mass balance and may affect glacier retreat in response to climate change. Yet, estimates on rockwall erosion rates close to glacier surfaces are few and quantifying spatiotemporal supply patterns is not trivial.

This data publication is supplementary to the study on rockwall erosion rates at five Swiss valley glaciers around Pigne d’Arolla, by Wetterauer & Scherler (2023). We temporally and spatially assess rockwall erosion by measuring in situ-produced cosmogenic 10Be concentrations ('[10Be]measured') in medial moraine debris, which we systematically sampled along downglacier-profiles, and by comparing records from various medial moraines, which are supplied by rockwalls differing in exposure and morphology. However, as '[10Be]measured' within supraglacial debris is the sum of '[10Be]rockwall', accumulated during rockwall erosion, and '[10Be]transport', accumulated during post-depositional downglacier transport, medial moraine '[10Be]measured' should be corrected for '[10Be]transport'. If glacier velocities through time are known, '[10Be]transport' can be estimated by downglacier debris trajectory modelling. Providing our 10Be dataset and ~40-year records of glacier surface velocities from four of the five valley glaciers (Glacier du Brenay, Glacier de Cheilon, Glacier de Pièce, Glacier de Tsijiore Nouve) is the main objective of this data publication. The dataset of the fifth glacier (Glacier d’Otemma) has already been published as case study by Wetterauer et al. (2022a,b).

The data were collected as part of the project “COLD”, which investigates the Climate Sensitivity of Glacial Landscape Dynamics with a focus on the European Alps. This research receives funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program under grant agreement 759639.
Study area around Pigne d'Arolla, Switzerland 7.38429 7.50789 45.9335 46.0242 H2020 European Research Council http://doi.org/10.13039/100010663 759639 COLD - Climate Sensitivity of Glacial Landscape Dynamics